backend/Makefile

@@ -14,6 +14,11 @@ test:
 	go test ./...
 
 run:
+	mkdir -p bin
+	go build -o bin/gateway gateway.go
+	./bin/gateway -f etc/gateway.yaml
+
+run-dev:
 	go run gateway.go -f etc/gateway.yaml
 
 web-dev:

backend/etc/gateway.worker.yaml

@@ -5,27 +5,27 @@ Timeout: 120000
 
 # 本機開發 worker 設定（go worker）。搭配 `make dev-infra` 的 Mongo/Redis。
 Mongo:
-  URI: mongodb://haixun:change-me-mongo-pass@127.0.0.1:27017/?authSource=admin
-  Database: haixun
+  URI: ${HAIXUN_MONGO_URI}
+  Database: ${HAIXUN_MONGO_DB}
   TimeoutSeconds: 10
 
 Redis:
-  Addr: 127.0.0.1:6379
-  Password: change-me-redis-pass
+  Addr: ${HAIXUN_REDIS_ADDR}
+  Password: ${HAIXUN_REDIS_PASSWORD}
   DB: 0
 
 Auth:
-  AccessSecret: haixun-dev-access-secret-change-me
-  RefreshSecret: haixun-dev-refresh-secret-change-me
+  AccessSecret: ${HAIXUN_JWT_ACCESS_SECRET}
+  RefreshSecret: ${HAIXUN_JWT_REFRESH_SECRET}
   AccessExpireSeconds: 900
   RefreshExpireSeconds: 2592000
   DevHeaderFallback: false
 
 Secrets:
-  EncryptionKey: ""
+  EncryptionKey: ${HAIXUN_SECRETS_KEY}
 
 InternalWorker:
-  Secret: haixun-dev-worker-secret
+  Secret: ${HAIXUN_WORKER_SECRET}
 
 JobWorker:
   Enabled: true

backend/etc/gateway.yaml

@@ -46,7 +46,7 @@ ThreadsOAuth:
   AppID: "${THREADS_APP_ID}"
   AppSecret: "${THREADS_APP_SECRET}"
   RedirectURI: "${THREADS_REDIRECT_URI}"
-  # OAuth 完成後瀏覽器導回（Dev Console 預設 http://127.0.0.1:5173）
+  # OAuth 完成後瀏覽器導回（現在指向 https://threads-tool.30cm.net ）
   SuccessRedirect: "${THREADS_OAUTH_SUCCESS_REDIRECT}"
 
 # 系統任務：在 token 到期前自動 enqueue refresh-threads-token job

backend/gateway.go

@@ -31,6 +31,7 @@ func main() {
 	defer sc.Close(context.Background())
 
 	handler.RegisterHandlers(server, sc)
+	handler.RegisterExtraHandlers(server, sc)
 
 	fmt.Printf("Starting backend backend at %s:%d...\n", c.Host, c.Port)
 	server.Start()

backend/generate/api/brand.api

@@ -36,6 +36,7 @@ type (
 		ID             string   `json:"id"`
 		Label          string   `json:"label"`
 		ProductContext string   `json:"product_context"`
+		PlacementURL   string   `json:"placement_url,omitempty"`
 		MatchTags      []string `json:"match_tags,omitempty"`
 		CreateAt       int64    `json:"create_at"`
 		UpdateAt       int64    `json:"update_at"`
@@ -65,12 +66,14 @@ type (
 	CreateBrandProductReq {
 		Label          string   `json:"label" validate:"required"`
 		ProductContext string   `json:"product_context" validate:"required"`
+		PlacementURL   string   `json:"placement_url,optional"`
 		MatchTags      []string `json:"match_tags,optional"`
 	}
 
 	UpdateBrandProductReq {
 		Label          *string  `json:"label,optional"`
 		ProductContext *string  `json:"product_context,optional"`
+		PlacementURL   string   `json:"placement_url,optional"`
 		MatchTags      []string `json:"match_tags,optional"`
 	}
 
@@ -183,6 +186,7 @@ type (
 		NodeIDs        []string `json:"node_ids,optional"`
 		DualTrack      bool     `json:"dual_track,optional"`
 		PatrolMode     bool     `json:"patrol_mode,optional"`
+		TestPatrol     bool     `json:"test_patrol,optional"`
 		PatrolKeywords []string `json:"patrol_keywords,optional"`
 	}
 
@@ -219,6 +223,7 @@ type (
 		PublishedPermalink string `json:"published_permalink,omitempty"`
 		OutreachUpdateAt   int64           `json:"outreach_update_at,omitempty"`
 		PostedAt           string          `json:"posted_at,omitempty"`
+		RecencyDays        int             `json:"recency_days,omitempty"`
 		Replies            []ScanReplyData `json:"replies,omitempty"`
 		LatestDraft        *GenerateOutreachDraftsData `json:"latest_draft,omitempty"`
 		CreateAt           int64           `json:"create_at"`
@@ -235,6 +240,7 @@ type (
 		Count           int    `json:"count,optional"`
 		VoicePersonaID  string `json:"voice_persona_id,optional"`
 		ProductID       string `json:"product_id,optional"`
+		Regenerate      bool   `json:"regenerate,optional"`
 	}
 
 	OutreachDraftItemData {
@@ -258,6 +264,11 @@ type (
 		Confirm    bool   `json:"confirm"`
 	}
 
+	UpdateOutreachDraftReq {
+		DraftIndex int    `json:"draft_index"`
+		Text       string `json:"text" validate:"required"`
+	}
+
 	PublishOutreachDraftData {
 		ScanPostID         string `json:"scan_post_id"`
 		ReplyID            string `json:"reply_id"`
@@ -355,6 +366,12 @@ type (
 		PublishOutreachDraftReq
 	}
 
+	UpdateOutreachDraftHandlerReq {
+		BrandPath
+		DraftID string `path:"draftId" validate:"required"`
+		UpdateOutreachDraftReq
+	}
+
 	PatchScanPostOutreachHandlerReq {
 		BrandPath
 		PostID string `path:"postId"`
@@ -428,6 +445,9 @@ service gateway {
 	@handler publishOutreachDraft
 	post /:id/outreach-drafts/publish (PublishOutreachDraftHandlerReq) returns (PublishOutreachDraftData)
 
+	@handler updateOutreachDraft
+	patch /:id/outreach-drafts/:draftId (UpdateOutreachDraftHandlerReq) returns (GenerateOutreachDraftsData)
+
 	@handler patchScanPostOutreach
 	patch /:id/scan-posts/:postId (PatchScanPostOutreachHandlerReq) returns (ScanPostData)
 

backend/generate/api/member.api

@@ -39,6 +39,7 @@ type (
 		BraveSearchLang         string `json:"brave_search_lang"`
 		ExaUserLocation         string `json:"exa_user_location"`
 		ExpandStrategy          string `json:"expand_strategy"` // brave | llm | hybrid
+		DevModeEnabled          bool   `json:"dev_mode_enabled"`
 	}
 
 	UpdateMemberPlacementSettingsReq {
@@ -49,6 +50,7 @@ type (
 		BraveSearchLang   *string `json:"brave_search_lang,optional"`
 		ExaUserLocation   *string `json:"exa_user_location,optional"`
 		ExpandStrategy    *string `json:"expand_strategy,optional"`
+		DevModeEnabled    *bool   `json:"dev_mode_enabled,optional"`
 	}
 
 	MemberCapabilitiesData {

backend/generate/api/persona.api

@@ -115,6 +115,7 @@ type (
 		PersonaID     string   `json:"persona_id"`
 		CopyMissionID string   `json:"copy_mission_id,omitempty"`
 		ScanPostID    string   `json:"scan_post_id,omitempty"`
+		FormulaID     string   `json:"formula_id,omitempty"`
 		DraftType     string   `json:"draft_type"`
 		SortOrder     int      `json:"sort_order,omitempty"`
 		Text       string   `json:"text"`
@@ -229,6 +230,65 @@ type (
 		DraftID string `json:"draft_id"`
 		Message string `json:"message"`
 	}
+
+	ListPersonaContentInboxReq {
+		Page       int64  `form:"page,optional"`
+		PageSize   int64  `form:"pageSize,optional"`
+		Status     string `form:"status,optional"`
+		RangeStart int64  `form:"rangeStart,optional"`
+		RangeEnd   int64  `form:"rangeEnd,optional"`
+	}
+
+	ListPersonaContentInboxHandlerReq {
+		PersonaPath
+		ListPersonaContentInboxReq
+	}
+
+	ContentInboxItemData {
+		CopyDraftData
+		ScheduledAt   int64  `json:"scheduled_at,omitempty"`
+		Lifecycle     string `json:"lifecycle"`
+		GroupDate     int64  `json:"group_date"`
+		FormulaLabel  string `json:"formula_label,omitempty"`
+	}
+
+	ListPersonaContentInboxData {
+		Pagination PaginationData         `json:"pagination"`
+		List       []ContentInboxItemData `json:"list"`
+	}
+
+	SchedulePersonaCopyDraftReq {
+		AccountID   string `json:"account_id" validate:"required"`
+		ScheduledAt int64  `json:"scheduled_at,optional"`
+	}
+
+	SchedulePersonaCopyDraftHandlerReq {
+		CopyDraftPath
+		SchedulePersonaCopyDraftReq
+	}
+
+	ContentFormulaPath {
+		ID        string `path:"id" validate:"required"`
+		FormulaID string `path:"formulaId" validate:"required"`
+	}
+
+	GenerateFromContentFormulaReq {
+		AccountID     string `json:"account_id" validate:"required"`
+		Topic         string `json:"topic" validate:"required"`
+		Brief         string `json:"brief,optional"`
+		UseWebSearch  bool   `json:"use_web_search,optional"`
+		DraftCount    int    `json:"draft_count,optional"`
+	}
+
+	GenerateFromContentFormulaHandlerReq {
+		ContentFormulaPath
+		GenerateFromContentFormulaReq
+	}
+
+	GenerateFromContentFormulaData {
+		List    []CopyDraftData `json:"list"`
+		Message string          `json:"message"`
+	}
 )
 
 @server(
@@ -266,6 +326,9 @@ service gateway {
 	@handler listPersonaCopyDrafts
 	get /:id/copy-drafts (PersonaPath) returns (ListPersonaCopyDraftsData)
 
+	@handler listPersonaContentInbox
+	get /:id/content-inbox (ListPersonaContentInboxHandlerReq) returns (ListPersonaContentInboxData)
+
 	@handler generatePersonaCopyDraft
 	post /:id/copy-drafts/generate (GeneratePersonaCopyDraftHandlerReq) returns (GeneratePersonaCopyDraftData)
 
@@ -278,6 +341,12 @@ service gateway {
 	@handler schedulePersonaDrafts
 	post /:id/copy-drafts/schedule (SchedulePersonaDraftsHandlerReq) returns (ScheduleCopyDraftsData)
 
+	@handler schedulePersonaCopyDraft
+	post /:id/copy-drafts/:draftId/schedule (SchedulePersonaCopyDraftHandlerReq) returns (ScheduleCopyDraftsData)
+
+	@handler generateFromContentFormula
+	post /:id/content-formulas/:formulaId/generate (GenerateFromContentFormulaHandlerReq) returns (GenerateFromContentFormulaData)
+
 	@handler deletePersonaCopyDraft
 	delete /:id/copy-drafts/:draftId (CopyDraftPath) returns (DeleteCopyDraftData)
 

backend/generate/api/placement_topic.api

@@ -83,6 +83,12 @@ type (
 		PublishOutreachDraftReq
 	}
 
+	UpdatePlacementTopicOutreachDraftHandlerReq {
+		PlacementTopicPath
+		DraftID string `path:"draftId" validate:"required"`
+		UpdateOutreachDraftReq
+	}
+
 	PatchPlacementTopicScanPostOutreachHandlerReq {
 		PlacementTopicPath
 		PostID string `path:"postId"`
@@ -116,6 +122,25 @@ type (
 		PlacementTopicPath
 		UpsertBrandScanScheduleReq
 	}
+
+	StartPlacementTopicOutreachDraftJobReq {
+		ScanPostID     string   `json:"scan_post_id,optional"`
+		ScanPostIDs    []string `json:"scan_post_ids,optional"`
+		Count          int      `json:"count,optional"`
+		VoicePersonaID string   `json:"voice_persona_id,optional"`
+		ProductID      string   `json:"product_id,optional"`
+		Regenerate     bool     `json:"regenerate,optional"`
+	}
+
+	StartPlacementTopicOutreachDraftJobHandlerReq {
+		PlacementTopicPath
+		StartPlacementTopicOutreachDraftJobReq
+	}
+
+	StartPlacementTopicOutreachDraftJobsData {
+		Jobs    []StartBrandScanJobData `json:"jobs"`
+		Message string                  `json:"message"`
+	}
 )
 
 @server(
@@ -159,9 +184,15 @@ service gateway {
 	@handler generatePlacementTopicOutreachDrafts
 	post /:id/outreach-drafts/generate (GeneratePlacementTopicOutreachDraftsHandlerReq) returns (GenerateOutreachDraftsData)
 
+	@handler startPlacementTopicOutreachDraftJob
+	post /:id/outreach-draft-jobs (StartPlacementTopicOutreachDraftJobHandlerReq) returns (StartPlacementTopicOutreachDraftJobsData)
+
 	@handler publishPlacementTopicOutreachDraft
 	post /:id/outreach-drafts/publish (PublishPlacementTopicOutreachDraftHandlerReq) returns (PublishOutreachDraftData)
 
+	@handler updatePlacementTopicOutreachDraft
+	patch /:id/outreach-drafts/:draftId (UpdatePlacementTopicOutreachDraftHandlerReq) returns (GenerateOutreachDraftsData)
+
 	@handler patchPlacementTopicScanPostOutreach
 	patch /:id/scan-posts/:postId (PatchPlacementTopicScanPostOutreachHandlerReq) returns (ScanPostData)
 

backend/generate/api/threads_account.api

@@ -206,6 +206,9 @@ type (
 		ReplyID       string `json:"reply_id,optional"`
 		ReplyToID     string `json:"reply_to_id,optional"`
 		Text          string `json:"text,optional"`
+		Permalink     string `json:"permalink,optional"`
+		HintText      string `json:"hint_text,optional"`
+		SkipPrime     bool   `json:"skip_prime,optional"`
 		LocationQuery string `json:"location_query,optional"`
 		Limit         int    `json:"limit,optional"`
 		Hide          bool   `json:"hide,optional"`
@@ -257,6 +260,11 @@ type (
 		Text            string `json:"text,optional"`
 		Permalink       string `json:"permalink,optional"`
 		Timestamp       string `json:"timestamp,optional"`
+		MediaType       string `json:"media_type,optional"`
+		MediaURL        string `json:"media_url,optional"`
+		ThumbnailURL    string `json:"thumbnail_url,optional"`
+		TopicTag        string `json:"topic_tag,optional"`
+		Shortcode       string `json:"shortcode,optional"`
 		LikeCount       int    `json:"like_count"`
 		ReplyCount      int    `json:"reply_count"`
 		RepostCount     int    `json:"repost_count,optional"`
@@ -547,6 +555,145 @@ type (
 		TotalReplies7d  int                              `json:"total_replies_7d"`
 	}
 
+	GenerateOwnPostReplyDraftReq {
+		MediaID         string `json:"media_id"`
+		PersonaID       string `json:"persona_id,optional"`
+		ReplyToID       string `json:"reply_to_id,optional"`
+		PostText        string `json:"post_text,optional"`
+		ReplyText       string `json:"reply_text,optional"`
+		ThreadPostText  string `json:"thread_post_text,optional"`
+		ParentReplyText string `json:"parent_reply_text,optional"`
+	}
+
+	GenerateOwnPostReplyDraftHandlerReq {
+		ThreadsAccountPath
+		GenerateOwnPostReplyDraftReq
+	}
+
+	GenerateOwnPostReplyDraftData {
+		Text string `json:"text"`
+	}
+
+	MentionInboxItemData {
+		MediaID         string `json:"media_id"`
+		AuthorUsername  string `json:"author_username,omitempty"`
+		Text            string `json:"text,omitempty"`
+		Permalink       string `json:"permalink,omitempty"`
+		Shortcode       string `json:"shortcode,omitempty"`
+		Timestamp       string `json:"timestamp,omitempty"`
+		MediaType       string `json:"media_type,omitempty"`
+		IsReply         bool   `json:"is_reply"`
+		IsQuotePost     bool   `json:"is_quote_post"`
+		HasReplies      bool   `json:"has_replies"`
+		RootPostID      string `json:"root_post_id,omitempty"`
+		ParentID        string `json:"parent_id,omitempty"`
+		ThreadPostText  string `json:"thread_post_text,omitempty"`
+		ParentReplyText string `json:"parent_reply_text,omitempty"`
+		ReplyReady      bool   `json:"reply_ready"`
+		ReplyReadyMsg   string `json:"reply_ready_msg,omitempty"`
+		SyncedAt        int64  `json:"synced_at"`
+	}
+
+	SyncMentionInboxReq {
+		Limit    int `json:"limit,optional"`
+		MaxPages int `json:"max_pages,optional"`
+	}
+
+	SyncMentionInboxHandlerReq {
+		ThreadsAccountPath
+		SyncMentionInboxReq
+	}
+
+	SyncMentionInboxData {
+		Synced int   `json:"synced"`
+		Ready  int   `json:"ready"`
+		Total  int64 `json:"total"`
+	}
+
+	ListMentionInboxQuery {
+		Page     int `form:"page,optional"`
+		PageSize int `form:"pageSize,optional"`
+	}
+
+	ListMentionInboxHandlerReq {
+		ThreadsAccountPath
+		ListMentionInboxQuery
+	}
+
+	ListMentionInboxData {
+		List           []MentionInboxItemData `json:"list"`
+		Pagination     PaginationData         `json:"pagination"`
+		ReadyTotal     int64                  `json:"ready_total"`
+		NewestSyncedAt int64                  `json:"newest_synced_at,omitempty"`
+	}
+
+	PublishMentionReplyReq {
+		Text string `json:"text"`
+	}
+
+	PublishMentionReplyPath {
+		ID      string `path:"id" validate:"required"`
+		MediaID string `path:"media_id" validate:"required"`
+	}
+
+	PublishMentionReplyHandlerReq {
+		PublishMentionReplyPath
+		PublishMentionReplyReq
+	}
+
+	PublishMentionReplyData {
+		MediaID   string `json:"media_id,omitempty"`
+		Permalink string `json:"permalink,omitempty"`
+	}
+
+	GenerateOwnPostFormulaReq {
+		MediaID     string `json:"media_id"`
+		PersonaID   string `json:"persona_id,optional"`
+		PostText    string `json:"post_text,optional"`
+		TopicTag    string `json:"topic_tag,optional"`
+		MediaType   string `json:"media_type,optional"`
+		Timestamp   string `json:"timestamp,optional"`
+		LikeCount   int    `json:"like_count,optional"`
+		ReplyCount  int    `json:"reply_count,optional"`
+		Views       int    `json:"views,optional"`
+		RepostCount int    `json:"repost_count,optional"`
+		QuoteCount  int    `json:"quote_count,optional"`
+		Shares      int    `json:"shares,optional"`
+		Force       bool   `json:"force,optional"`
+	}
+
+	GenerateOwnPostFormulaHandlerReq {
+		ThreadsAccountPath
+		GenerateOwnPostFormulaReq
+	}
+
+	OwnPostFormulaReviewData {
+		MediaID         string   `json:"media_id"`
+		ReviewedAt      int64    `json:"reviewed_at"`
+		FromCache       bool     `json:"from_cache,omitempty"`
+		Summary         string   `json:"summary"`
+		Wins            []string `json:"wins"`
+		Improvements    []string `json:"improvements"`
+		Formula         string   `json:"formula"`
+		PostTemplate    string   `json:"post_template"`
+		HookPattern     string   `json:"hook_pattern"`
+		Structure       string   `json:"structure"`
+		ReplicationTips []string `json:"replication_tips"`
+		Avoid           []string `json:"avoid"`
+	}
+
+	GenerateOwnPostFormulaData {
+		OwnPostFormulaReviewData
+	}
+
+	ListOwnPostFormulasHandlerReq {
+		ThreadsAccountPath
+	}
+
+	ListOwnPostFormulasData {
+		List []OwnPostFormulaReviewData `json:"list"`
+	}
+
 	ThreadsDiagnosticsData {
 		AccountID      string                 `json:"account_id"`
 		CheckedAt      int64                  `json:"checked_at"`
@@ -556,6 +703,149 @@ type (
 		Items          []ThreadsAPISmokeTestItem `json:"items"`
 		Message        string                 `json:"message"`
 	}
+
+	ContentFormulaSourceMetricsData {
+		LikeCount   int `json:"like_count,omitempty"`
+		ReplyCount  int `json:"reply_count,omitempty"`
+		Views       int `json:"views,omitempty"`
+		RepostCount int `json:"repost_count,omitempty"`
+		QuoteCount  int `json:"quote_count,omitempty"`
+		Shares      int `json:"shares,omitempty"`
+	}
+
+	ContentFormulaData {
+		ID              string                           `json:"id"`
+		AccountID       string                           `json:"account_id"`
+		Label           string                           `json:"label"`
+		SourceType      string                           `json:"source_type"`
+		SourceRef       string                           `json:"source_ref,omitempty"`
+		SourcePostText  string                           `json:"source_post_text,omitempty"`
+		SourceAuthor    string                           `json:"source_author,omitempty"`
+		SourcePermalink string                           `json:"source_permalink,omitempty"`
+		SourceMetrics   *ContentFormulaSourceMetricsData `json:"source_metrics,omitempty"`
+		Summary         string                           `json:"summary"`
+		Wins            []string                         `json:"wins,omitempty"`
+		Improvements    []string                         `json:"improvements,omitempty"`
+		Formula         string                           `json:"formula"`
+		PostTemplate    string                           `json:"post_template"`
+		HookPattern     string                           `json:"hook_pattern"`
+		Structure       string                           `json:"structure"`
+		ReplicationTips []string                         `json:"replication_tips,omitempty"`
+		Avoid           []string                         `json:"avoid,omitempty"`
+		Tags            []string                         `json:"tags,omitempty"`
+		CreateAt        int64                            `json:"create_at"`
+		UpdateAt        int64                            `json:"update_at"`
+	}
+
+	ListContentFormulasReq {
+		Page       int64  `form:"page,optional"`
+		PageSize   int64  `form:"pageSize,optional"`
+		SourceType string `form:"source_type,optional"`
+		Tag        string `form:"tag,optional"`
+	}
+
+	ListContentFormulasHandlerReq {
+		ThreadsAccountPath
+		ListContentFormulasReq
+	}
+
+	ListContentFormulasData {
+		Pagination PaginationData       `json:"pagination"`
+		List       []ContentFormulaData `json:"list"`
+	}
+
+	ContentFormulaItemPath {
+		ID        string `path:"id" validate:"required"`
+		FormulaID string `path:"formulaId" validate:"required"`
+	}
+
+	GetContentFormulaHandlerReq {
+		ContentFormulaItemPath
+	}
+
+	AnalyzeContentFormulaReq {
+		SourceType    string `json:"source_type" validate:"required"`
+		PersonaID     string `json:"persona_id,optional"`
+		PostText      string `json:"post_text,optional"`
+		MediaID       string `json:"media_id,optional"`
+		ScanPostID    string `json:"scan_post_id,optional"`
+		Keyword       string `json:"keyword,optional"`
+		SaveLabel     string `json:"save_label,optional"`
+		AuthorName    string `json:"author_name,optional"`
+		Permalink     string `json:"permalink,optional"`
+		LikeCount     int    `json:"like_count,optional"`
+		ReplyCount    int    `json:"reply_count,optional"`
+		Views         int    `json:"views,optional"`
+		RepostCount   int    `json:"repost_count,optional"`
+		QuoteCount    int    `json:"quote_count,optional"`
+		Shares        int    `json:"shares,optional"`
+		ForceRefresh  bool   `json:"force_refresh,optional"`
+	}
+
+	AnalyzeContentFormulaHandlerReq {
+		ThreadsAccountPath
+		AnalyzeContentFormulaReq
+	}
+
+	AnalyzeContentFormulaData {
+		Formula ContentFormulaData `json:"formula"`
+		Message string             `json:"message"`
+	}
+
+	SearchContentFormulaPostsReq {
+		Keyword    string `json:"keyword" validate:"required"`
+		SearchType string `json:"search_type,optional"`
+		Limit      int    `json:"limit,optional"`
+	}
+
+	SearchContentFormulaPostsHandlerReq {
+		ThreadsAccountPath
+		SearchContentFormulaPostsReq
+	}
+
+	ContentFormulaSearchPostData {
+		Text            string `json:"text"`
+		Author          string `json:"author"`
+		Permalink       string `json:"permalink,omitempty"`
+		MediaID         string `json:"media_id,omitempty"`
+		LikeCount       int    `json:"like_count"`
+		ReplyCount      int    `json:"reply_count"`
+		EngagementScore int    `json:"engagement_score"`
+	}
+
+	SearchContentFormulaPostsData {
+		List    []ContentFormulaSearchPostData `json:"list"`
+		Message string                         `json:"message"`
+	}
+
+	PatchContentFormulaReq {
+		Label        *string  `json:"label,optional"`
+		Formula      *string  `json:"formula,optional"`
+		PostTemplate *string  `json:"post_template,optional"`
+		HookPattern  *string  `json:"hook_pattern,optional"`
+		Structure    *string  `json:"structure,optional"`
+		Tags         []string `json:"tags,optional"`
+	}
+
+	PatchContentFormulaHandlerReq {
+		ContentFormulaItemPath
+		PatchContentFormulaReq
+	}
+
+	DeleteContentFormulaData {
+		FormulaID string `json:"formula_id"`
+		Message   string `json:"message"`
+	}
+
+	ImportOwnPostFormulaReq {
+		MediaID string `json:"media_id" validate:"required"`
+		Label   string `json:"label,optional"`
+	}
+
+	ImportOwnPostFormulaHandlerReq {
+		ThreadsAccountPath
+		ImportOwnPostFormulaReq
+	}
 )
 
 @server(
@@ -680,8 +970,47 @@ service gateway {
 	@handler getThreadsDiagnostics
 	get /:id/diagnostics (ThreadsAccountPath) returns (ThreadsDiagnosticsData)
 
+	@handler generateOwnPostReplyDraft
+	post /:id/own-post-reply-draft (GenerateOwnPostReplyDraftHandlerReq) returns (GenerateOwnPostReplyDraftData)
+
+	@handler syncMentionInbox
+	post /:id/mention-inbox/sync (SyncMentionInboxHandlerReq) returns (SyncMentionInboxData)
+
+	@handler listMentionInbox
+	get /:id/mention-inbox (ListMentionInboxHandlerReq) returns (ListMentionInboxData)
+
+	@handler publishMentionReply
+	post /:id/mention-inbox/:media_id/reply (PublishMentionReplyHandlerReq) returns (PublishMentionReplyData)
+
+	@handler generateOwnPostFormula
+	post /:id/own-post-formula (GenerateOwnPostFormulaHandlerReq) returns (GenerateOwnPostFormulaData)
+
+	@handler listOwnPostFormulas
+	get /:id/own-post-formulas (ListOwnPostFormulasHandlerReq) returns (ListOwnPostFormulasData)
+
 	@handler getPublishDashboardSummary
 	get /publish-dashboard-summary returns (PublishDashboardSummaryData)
+
+	@handler listContentFormulas
+	get /:id/content-formulas (ListContentFormulasHandlerReq) returns (ListContentFormulasData)
+
+	@handler getContentFormula
+	get /:id/content-formulas/:formulaId (GetContentFormulaHandlerReq) returns (ContentFormulaData)
+
+	@handler analyzeContentFormula
+	post /:id/content-formulas/analyze (AnalyzeContentFormulaHandlerReq) returns (AnalyzeContentFormulaData)
+
+	@handler searchContentFormulaPosts
+	post /:id/content-formulas/search-posts (SearchContentFormulaPostsHandlerReq) returns (SearchContentFormulaPostsData)
+
+	@handler patchContentFormula
+	patch /:id/content-formulas/:formulaId (PatchContentFormulaHandlerReq) returns (ContentFormulaData)
+
+	@handler deleteContentFormula
+	delete /:id/content-formulas/:formulaId (GetContentFormulaHandlerReq) returns (DeleteContentFormulaData)
+
+	@handler importOwnPostToContentFormula
+	post /:id/content-formulas/import-own-post (ImportOwnPostFormulaHandlerReq) returns (AnalyzeContentFormulaData)
 }
 
 @server(

backend/internal/handler/brand/update_outreach_draft_handler.go

@@ -0,0 +1,30 @@
+package brand
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/brand"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func UpdateOutreachDraftHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.UpdateOutreachDraftHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+
+		l := brand.NewUpdateOutreachDraftLogic(r.Context(), svcCtx)
+		data, err := l.UpdateOutreachDraft(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/persona/generate_from_content_formula_handler.go

@@ -0,0 +1,29 @@
+package persona
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/persona"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func GenerateFromContentFormulaHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.GenerateFromContentFormulaHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := persona.NewGenerateFromContentFormulaLogic(r.Context(), svcCtx)
+		data, err := l.GenerateFromContentFormula(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/persona/list_persona_content_inbox_handler.go

@@ -0,0 +1,29 @@
+package persona
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/persona"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func ListPersonaContentInboxHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.ListPersonaContentInboxHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := persona.NewListPersonaContentInboxLogic(r.Context(), svcCtx)
+		data, err := l.ListPersonaContentInbox(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/persona/schedule_persona_copy_draft_handler.go

@@ -0,0 +1,29 @@
+package persona
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/persona"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func SchedulePersonaCopyDraftHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.SchedulePersonaCopyDraftHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := persona.NewSchedulePersonaCopyDraftLogic(r.Context(), svcCtx)
+		data, err := l.SchedulePersonaCopyDraft(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/placement_topic/start_placement_topic_outreach_draft_job_handler.go

@@ -0,0 +1,30 @@
+package placement_topic
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/placement_topic"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func StartPlacementTopicOutreachDraftJobHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.StartPlacementTopicOutreachDraftJobHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+
+		l := placement_topic.NewStartPlacementTopicOutreachDraftJobLogic(r.Context(), svcCtx)
+		data, err := l.StartPlacementTopicOutreachDraftJob(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/placement_topic/update_placement_topic_outreach_draft_handler.go

@@ -0,0 +1,30 @@
+package placement_topic
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/placement_topic"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func UpdatePlacementTopicOutreachDraftHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.UpdatePlacementTopicOutreachDraftHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+
+		l := placement_topic.NewUpdatePlacementTopicOutreachDraftLogic(r.Context(), svcCtx)
+		data, err := l.UpdatePlacementTopicOutreachDraft(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/register_extra.go

@@ -0,0 +1,24 @@
+package handler
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/handler/static"
+	"haixun-backend/internal/svc"
+
+	"github.com/zeromicro/go-zero/rest"
+)
+
+// RegisterExtraHandlers mounts routes that are not generated by goctl.
+func RegisterExtraHandlers(server *rest.Server, _ *svc.ServiceContext) {
+	server.AddRoutes(
+		[]rest.Route{
+			{
+				Method:  http.MethodGet,
+				Path:    "/downloads/haixun-threads-sync.zip",
+				Handler: static.ExtensionDownloadHandler(),
+			},
+		},
+		rest.WithPrefix("/api/v1"),
+	)
+}

backend/internal/handler/routes.go

@@ -162,6 +162,11 @@ func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 					Path:    "/:id/knowledge-graph/nodes",
 					Handler: brand.PatchKnowledgeGraphNodesHandler(serverCtx),
 				},
+				{
+					Method:  http.MethodPatch,
+					Path:    "/:id/outreach-drafts/:draftId",
+					Handler: brand.UpdateOutreachDraftHandler(serverCtx),
+				},
 				{
 					Method:  http.MethodPost,
 					Path:    "/:id/outreach-drafts/generate",
@@ -341,6 +346,65 @@ func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 		rest.WithPrefix("/api/v1/personas"),
 	)
 
+	server.AddRoutes(
+		rest.WithMiddlewares(
+			[]rest.Middleware{serverCtx.WorkerSecret},
+			[]rest.Route{
+				{
+					Method:  http.MethodPost,
+					Path:    "/workers/jobs/:id/analyze-style8d",
+					Handler: job.AnalyzeStyle8DFromWorkerHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/workers/jobs/:id/cancel-ack",
+					Handler: job.AckWorkerJobCancelHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/workers/jobs/:id/cancel-check",
+					Handler: job.CheckWorkerJobCancelHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/workers/jobs/:id/complete",
+					Handler: job.CompleteWorkerJobHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/workers/jobs/:id/fail",
+					Handler: job.FailWorkerJobHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/workers/jobs/:id/heartbeat",
+					Handler: job.RefreshWorkerJobLockHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/workers/jobs/:id/progress",
+					Handler: job.UpdateWorkerJobProgressHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/workers/jobs/claim",
+					Handler: job.ClaimWorkerJobHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPatch,
+					Path:    "/workers/personas/:id/style-profile",
+					Handler: job.StorePersonaStyleProfileFromWorkerHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/workers/threads-accounts/:id/session",
+					Handler: job.GetWorkerThreadsAccountSessionHandler(serverCtx),
+				},
+			}...,
+		),
+		rest.WithPrefix("/api/v1/internal"),
+	)
+
 	server.AddRoutes(
 		rest.WithMiddlewares(
 			[]rest.Middleware{serverCtx.AuthJWT},
@@ -425,65 +489,6 @@ func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 		rest.WithPrefix("/api/v1"),
 	)
 
-	server.AddRoutes(
-		rest.WithMiddlewares(
-			[]rest.Middleware{serverCtx.WorkerSecret},
-			[]rest.Route{
-				{
-					Method:  http.MethodPost,
-					Path:    "/workers/jobs/:id/analyze-style8d",
-					Handler: job.AnalyzeStyle8DFromWorkerHandler(serverCtx),
-				},
-				{
-					Method:  http.MethodPost,
-					Path:    "/workers/jobs/:id/cancel-ack",
-					Handler: job.AckWorkerJobCancelHandler(serverCtx),
-				},
-				{
-					Method:  http.MethodPost,
-					Path:    "/workers/jobs/:id/cancel-check",
-					Handler: job.CheckWorkerJobCancelHandler(serverCtx),
-				},
-				{
-					Method:  http.MethodPost,
-					Path:    "/workers/jobs/:id/complete",
-					Handler: job.CompleteWorkerJobHandler(serverCtx),
-				},
-				{
-					Method:  http.MethodPost,
-					Path:    "/workers/jobs/:id/fail",
-					Handler: job.FailWorkerJobHandler(serverCtx),
-				},
-				{
-					Method:  http.MethodPost,
-					Path:    "/workers/jobs/:id/heartbeat",
-					Handler: job.RefreshWorkerJobLockHandler(serverCtx),
-				},
-				{
-					Method:  http.MethodPost,
-					Path:    "/workers/jobs/:id/progress",
-					Handler: job.UpdateWorkerJobProgressHandler(serverCtx),
-				},
-				{
-					Method:  http.MethodPost,
-					Path:    "/workers/jobs/claim",
-					Handler: job.ClaimWorkerJobHandler(serverCtx),
-				},
-				{
-					Method:  http.MethodPatch,
-					Path:    "/workers/personas/:id/style-profile",
-					Handler: job.StorePersonaStyleProfileFromWorkerHandler(serverCtx),
-				},
-				{
-					Method:  http.MethodPost,
-					Path:    "/workers/threads-accounts/:id/session",
-					Handler: job.GetWorkerThreadsAccountSessionHandler(serverCtx),
-				},
-			}...,
-		),
-		rest.WithPrefix("/api/v1/internal"),
-	)
-
 	server.AddRoutes(
 		rest.WithMiddlewares(
 			[]rest.Middleware{serverCtx.AuthJWT},
@@ -577,6 +582,16 @@ func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 					Path:    "/:id",
 					Handler: persona.DeletePersonaHandler(serverCtx),
 				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/content-formulas/:formulaId/generate",
+					Handler: persona.GenerateFromContentFormulaHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodGet,
+					Path:    "/:id/content-inbox",
+					Handler: persona.ListPersonaContentInboxHandler(serverCtx),
+				},
 				{
 					Method:  http.MethodGet,
 					Path:    "/:id/copy-drafts",
@@ -597,6 +612,11 @@ func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 					Path:    "/:id/copy-drafts/:draftId/publish",
 					Handler: persona.PublishPersonaCopyDraftHandler(serverCtx),
 				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/copy-drafts/:draftId/schedule",
+					Handler: persona.SchedulePersonaCopyDraftHandler(serverCtx),
+				},
 				{
 					Method:  http.MethodPost,
 					Path:    "/:id/copy-drafts/generate",
@@ -696,6 +716,16 @@ func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 					Path:    "/:id/knowledge-graph/nodes",
 					Handler: placement_topic.PatchPlacementTopicGraphNodesHandler(serverCtx),
 				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/outreach-draft-jobs",
+					Handler: placement_topic.StartPlacementTopicOutreachDraftJobHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPatch,
+					Path:    "/:id/outreach-drafts/:draftId",
+					Handler: placement_topic.UpdatePlacementTopicOutreachDraftHandler(serverCtx),
+				},
 				{
 					Method:  http.MethodPost,
 					Path:    "/:id/outreach-drafts/generate",
@@ -849,11 +879,76 @@ func RegisterHandlers(server *rest.Server, serverCtx *svc.ServiceContext) {
 					Path:    "/:id/connection",
 					Handler: threads_account.UpdateThreadsAccountConnectionHandler(serverCtx),
 				},
+				{
+					Method:  http.MethodGet,
+					Path:    "/:id/content-formulas",
+					Handler: threads_account.ListContentFormulasHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodGet,
+					Path:    "/:id/content-formulas/:formulaId",
+					Handler: threads_account.GetContentFormulaHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPatch,
+					Path:    "/:id/content-formulas/:formulaId",
+					Handler: threads_account.PatchContentFormulaHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodDelete,
+					Path:    "/:id/content-formulas/:formulaId",
+					Handler: threads_account.DeleteContentFormulaHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/content-formulas/analyze",
+					Handler: threads_account.AnalyzeContentFormulaHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/content-formulas/import-own-post",
+					Handler: threads_account.ImportOwnPostToContentFormulaHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/content-formulas/search-posts",
+					Handler: threads_account.SearchContentFormulaPostsHandler(serverCtx),
+				},
 				{
 					Method:  http.MethodGet,
 					Path:    "/:id/diagnostics",
 					Handler: threads_account.GetThreadsDiagnosticsHandler(serverCtx),
 				},
+				{
+					Method:  http.MethodGet,
+					Path:    "/:id/mention-inbox",
+					Handler: threads_account.ListMentionInboxHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/mention-inbox/:media_id/reply",
+					Handler: threads_account.PublishMentionReplyHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/mention-inbox/sync",
+					Handler: threads_account.SyncMentionInboxHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/own-post-formula",
+					Handler: threads_account.GenerateOwnPostFormulaHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodGet,
+					Path:    "/:id/own-post-formulas",
+					Handler: threads_account.ListOwnPostFormulasHandler(serverCtx),
+				},
+				{
+					Method:  http.MethodPost,
+					Path:    "/:id/own-post-reply-draft",
+					Handler: threads_account.GenerateOwnPostReplyDraftHandler(serverCtx),
+				},
 				{
 					Method:  http.MethodGet,
 					Path:    "/:id/post-performance",

backend/internal/handler/static/extension_download.go

@@ -0,0 +1,42 @@
+package static
+
+import (
+	"net/http"
+	"os"
+	"path/filepath"
+)
+
+func ExtensionDownloadHandler() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		path, ok := resolveExtensionZipPath()
+		if !ok {
+			http.Error(w, "extension package not found", http.StatusNotFound)
+			return
+		}
+		w.Header().Set("Content-Type", "application/zip")
+		w.Header().Set("Content-Disposition", `attachment; filename="haixun-threads-sync.zip"`)
+		http.ServeFile(w, r, path)
+	}
+}
+
+func resolveExtensionZipPath() (string, bool) {
+	candidates := []string{
+		filepath.Join("web", "public", "downloads", "haixun-threads-sync.zip"),
+		filepath.Join("backend", "web", "public", "downloads", "haixun-threads-sync.zip"),
+		filepath.Join("..", "web", "public", "downloads", "haixun-threads-sync.zip"),
+		filepath.Join("extension", "haixun-threads-sync.zip"),
+	}
+	if wd, err := os.Getwd(); err == nil {
+		candidates = append(candidates,
+			filepath.Join(wd, "web", "public", "downloads", "haixun-threads-sync.zip"),
+			filepath.Join(wd, "backend", "web", "public", "downloads", "haixun-threads-sync.zip"),
+			filepath.Join(wd, "..", "extension", "haixun-threads-sync.zip"),
+		)
+	}
+	for _, candidate := range candidates {
+		if info, err := os.Stat(candidate); err == nil && !info.IsDir() && info.Size() > 0 {
+			return candidate, true
+		}
+	}
+	return "", false
+}

backend/internal/handler/threads_account/analyze_content_formula_handler.go

@@ -0,0 +1,29 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func AnalyzeContentFormulaHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.AnalyzeContentFormulaHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewAnalyzeContentFormulaLogic(r.Context(), svcCtx)
+		data, err := l.AnalyzeContentFormula(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/delete_content_formula_handler.go

@@ -0,0 +1,29 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func DeleteContentFormulaHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.GetContentFormulaHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewDeleteContentFormulaLogic(r.Context(), svcCtx)
+		data, err := l.DeleteContentFormula(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/generate_own_post_formula_handler.go

@@ -0,0 +1,28 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+)
+
+func GenerateOwnPostFormulaHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.GenerateOwnPostFormulaHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewGenerateOwnPostFormulaLogic(r.Context(), svcCtx)
+		data, err := l.GenerateOwnPostFormula(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/generate_own_post_reply_draft_handler.go

@@ -0,0 +1,28 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+)
+
+func GenerateOwnPostReplyDraftHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.GenerateOwnPostReplyDraftHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewGenerateOwnPostReplyDraftLogic(r.Context(), svcCtx)
+		data, err := l.GenerateOwnPostReplyDraft(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/get_content_formula_handler.go

@@ -0,0 +1,29 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func GetContentFormulaHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.GetContentFormulaHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewGetContentFormulaLogic(r.Context(), svcCtx)
+		data, err := l.GetContentFormula(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/import_own_post_to_content_formula_handler.go

@@ -0,0 +1,29 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func ImportOwnPostToContentFormulaHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.ImportOwnPostFormulaHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewImportOwnPostToContentFormulaLogic(r.Context(), svcCtx)
+		data, err := l.ImportOwnPostToContentFormula(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/list_content_formulas_handler.go

@@ -0,0 +1,29 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func ListContentFormulasHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.ListContentFormulasHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewListContentFormulasLogic(r.Context(), svcCtx)
+		data, err := l.ListContentFormulas(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/list_mention_inbox_handler.go

@@ -0,0 +1,28 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+)
+
+func ListMentionInboxHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.ListMentionInboxHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewListMentionInboxLogic(r.Context(), svcCtx)
+		data, err := l.ListMentionInbox(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/list_own_post_formulas_handler.go

@@ -0,0 +1,28 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+)
+
+func ListOwnPostFormulasHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.ListOwnPostFormulasHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewListOwnPostFormulasLogic(r.Context(), svcCtx)
+		data, err := l.ListOwnPostFormulas(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/patch_content_formula_handler.go

@@ -0,0 +1,29 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func PatchContentFormulaHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.PatchContentFormulaHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewPatchContentFormulaLogic(r.Context(), svcCtx)
+		data, err := l.PatchContentFormula(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/publish_mention_reply_handler.go

@@ -0,0 +1,28 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+)
+
+func PublishMentionReplyHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.PublishMentionReplyHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewPublishMentionReplyLogic(r.Context(), svcCtx)
+		data, err := l.PublishMentionReply(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/search_content_formula_posts_handler.go

@@ -0,0 +1,29 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+)
+
+func SearchContentFormulaPostsHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.SearchContentFormulaPostsHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewSearchContentFormulaPostsLogic(r.Context(), svcCtx)
+		data, err := l.SearchContentFormulaPosts(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/handler/threads_account/sync_mention_inbox_handler.go

@@ -0,0 +1,28 @@
+package threads_account
+
+import (
+	"net/http"
+
+	"github.com/zeromicro/go-zero/rest/httpx"
+	"haixun-backend/internal/logic/threads_account"
+	"haixun-backend/internal/response"
+	"haixun-backend/internal/svc"
+	"haixun-backend/internal/types"
+)
+
+func SyncMentionInboxHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req types.SyncMentionInboxHandlerReq
+		if err := httpx.Parse(r, &req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		if err := svcCtx.Validator.ValidateAll(&req); err != nil {
+			response.Write(r.Context(), w, nil, response.WrapRequestError(err))
+			return
+		}
+		l := threads_account.NewSyncMentionInboxLogic(r.Context(), svcCtx)
+		data, err := l.SyncMentionInbox(&req)
+		response.Write(r.Context(), w, data, err)
+	}
+}

backend/internal/library/embedding/client.go

@@ -1,3 +1,6 @@
+// Package embedding provides an optional OpenAI embeddings client.
+// It is intentionally not wired into patrol/graph flows; relevance uses
+// offline lexical intent scoring in knowledge/semantic_fit.go instead.
 package embedding
 
 import (

backend/internal/library/formula/analyze_pasted.go

@@ -0,0 +1,165 @@
+package formula
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"regexp"
+	"strings"
+
+	libownpost "haixun-backend/internal/library/ownpost"
+	domai "haixun-backend/internal/model/ai/domain/usecase"
+)
+
+var pastedFenceRE = regexp.MustCompile("(?s)```(?:json)?\\s*([\\s\\S]*?)```")
+
+type AnalyzePastedInput struct {
+	PostText     string
+	AuthorName   string
+	PersonaBlock string
+	LikeCount    int
+	ReplyCount   int
+}
+
+type PastedAnalysis struct {
+	Summary         string   `json:"summary"`
+	Wins            []string `json:"wins"`
+	Improvements    []string `json:"improvements"`
+	Formula         string   `json:"formula"`
+	PostTemplate    string   `json:"post_template"`
+	HookPattern     string   `json:"hook_pattern"`
+	Structure       string   `json:"structure"`
+	ReplicationTips []string `json:"replication_tips"`
+	Avoid           []string `json:"avoid"`
+}
+
+func BuildAnalyzePastedPrompt(in AnalyzePastedInput) (system string, user string) {
+	personaBlock := strings.TrimSpace(in.PersonaBlock)
+	if personaBlock == "" {
+		personaBlock = "（未指定人設，請依貼文本身語氣分析）"
+	}
+	postText := strings.TrimSpace(in.PostText)
+	if postText == "" {
+		postText = "（貼文內容未提供）"
+	}
+	author := strings.TrimSpace(in.AuthorName)
+	if author == "" {
+		author = "匿名"
+	}
+
+	system = strings.TrimSpace(`
+你是 Threads 爆款結構分析師。任務是拆解「外部貼文」為什麼會紅、怎麼用結構仿寫，不要建議抄襲原文。
+
+規則：
+- 用台灣繁體中文。
+- formula：整理成步驟化公式（例：Hook→情境→轉折→觀點→收尾/互動）。
+- post_template：依 formula 產出可複製的發文骨架，用 [括號] 標示可替換欄位。
+- 只輸出一個 JSON 物件，不要 markdown，欄位：
+  summary, wins, improvements, formula, post_template, hook_pattern, structure, replication_tips, avoid
+- wins / improvements / replication_tips / avoid 各 2～5 點字串陣列。`)
+
+	var b strings.Builder
+	b.WriteString("【人設脈絡】\n")
+	b.WriteString(personaBlock)
+	b.WriteString("\n\n【貼文】\n作者：")
+	b.WriteString(author)
+	if in.LikeCount > 0 || in.ReplyCount > 0 {
+		b.WriteString(fmt.Sprintf(" · %d 讚 · %d 留言", in.LikeCount, in.ReplyCount))
+	}
+	b.WriteString("\n")
+	b.WriteString(postText)
+	b.WriteString("\n\n請分析爆款結構並輸出 JSON。")
+	user = b.String()
+	return system, user
+}
+
+func AnalyzePasted(ctx context.Context, ai domai.UseCase, req domai.GenerateRequest, in AnalyzePastedInput) (*PastedAnalysis, error) {
+	system, user := BuildAnalyzePastedPrompt(in)
+	temp := 0.65
+	req.System = system
+	req.Messages = []domai.Message{{Role: "user", Content: user}}
+	req.Temperature = &temp
+	out, err := ai.GenerateText(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	return ParsePastedAnalysis(out.Text)
+}
+
+func ParsePastedAnalysis(raw string) (*PastedAnalysis, error) {
+	payload, err := extractPastedJSON(raw)
+	if err != nil {
+		return nil, err
+	}
+	var review PastedAnalysis
+	if err := json.Unmarshal(payload, &review); err != nil {
+		return nil, fmt.Errorf("parse pasted formula json: %w", err)
+	}
+	review.Summary = strings.TrimSpace(review.Summary)
+	review.Formula = strings.TrimSpace(review.Formula)
+	review.PostTemplate = strings.TrimSpace(review.PostTemplate)
+	review.HookPattern = strings.TrimSpace(review.HookPattern)
+	review.Structure = strings.TrimSpace(review.Structure)
+	if review.Summary == "" && review.Formula == "" && review.PostTemplate == "" {
+		return nil, fmt.Errorf("AI 未回傳有效公式內容")
+	}
+	return &review, nil
+}
+
+func FromOwnPostReview(review *libownpost.PostFormulaReview) *PastedAnalysis {
+	if review == nil {
+		return nil
+	}
+	return &PastedAnalysis{
+		Summary:         review.Summary,
+		Wins:            review.Wins,
+		Improvements:    review.Improvements,
+		Formula:         review.Formula,
+		PostTemplate:    review.PostTemplate,
+		HookPattern:     review.HookPattern,
+		Structure:       review.Structure,
+		ReplicationTips: review.ReplicationTips,
+		Avoid:           review.Avoid,
+	}
+}
+
+func FromViralAnalysis(hook, structure, emotion, strategy string, takeaways []string) *PastedAnalysis {
+	summary := strings.TrimSpace(emotion)
+	if summary == "" {
+		summary = "爆款結構分析"
+	}
+	formula := strings.TrimSpace(strategy)
+	if structure != "" {
+		if formula != "" {
+			formula = structure + " → " + formula
+		} else {
+			formula = structure
+		}
+	}
+	template := ""
+	if hook != "" && structure != "" {
+		template = "[" + hook + "] → [" + structure + "] → [你的觀點] → [互動收尾]"
+	}
+	return &PastedAnalysis{
+		Summary:         summary,
+		Wins:            takeaways,
+		Formula:         formula,
+		PostTemplate:    template,
+		HookPattern:     hook,
+		Structure:       structure,
+		ReplicationTips: takeaways,
+	}
+}
+
+func extractPastedJSON(raw string) ([]byte, error) {
+	raw = strings.TrimSpace(raw)
+	if m := pastedFenceRE.FindStringSubmatch(raw); len(m) == 2 {
+		raw = strings.TrimSpace(m[1])
+	}
+	start := strings.Index(raw, "{")
+	end := strings.LastIndex(raw, "}")
+	if start < 0 || end <= start {
+		return nil, fmt.Errorf("formula output missing json object")
+	}
+	return []byte(raw[start : end+1]), nil
+}

backend/internal/library/formula/generate_from_formula.go

@@ -0,0 +1,110 @@
+package formula
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	domai "haixun-backend/internal/model/ai/domain/usecase"
+	cfdom "haixun-backend/internal/model/content_formula/domain/usecase"
+)
+
+type GenerateInput struct {
+	Topic         string
+	Brief         string
+	PersonaBlock  string
+	ResearchNotes string
+	Formula       cfdom.FormulaSummary
+}
+
+type GeneratedDraft struct {
+	Text           string `json:"text"`
+	Hook           string `json:"hook"`
+	Angle          string `json:"angle"`
+	Rationale      string `json:"rationale"`
+	StructureNotes string `json:"structure_notes"`
+}
+
+func BuildGenerateSystemPrompt() string {
+	return strings.TrimSpace(`你是 Threads 文案寫手。依「爆款公式」與「人設」為指定主題寫一篇新貼文。
+
+規則：
+- 用台灣繁體中文，符合人設語氣。
+- 套用公式結構，但內容必須圍繞使用者主題，不可抄襲範例貼文。
+- 只回傳 JSON：text, hook, angle, rationale, structure_notes（繁體中文）。`)
+}
+
+func BuildGenerateUserPrompt(in GenerateInput) string {
+	var b strings.Builder
+	b.WriteString("【主題】\n")
+	b.WriteString(strings.TrimSpace(in.Topic))
+	if brief := strings.TrimSpace(in.Brief); brief != "" {
+		b.WriteString("\n補充：")
+		b.WriteString(brief)
+	}
+	b.WriteString("\n\n【人設】\n")
+	b.WriteString(strings.TrimSpace(in.PersonaBlock))
+	b.WriteString("\n\n【公式】\n")
+	b.WriteString(strings.TrimSpace(in.Formula.Formula))
+	if tpl := strings.TrimSpace(in.Formula.PostTemplate); tpl != "" {
+		b.WriteString("\n\n【發文模板】\n")
+		b.WriteString(tpl)
+	}
+	if hook := strings.TrimSpace(in.Formula.HookPattern); hook != "" {
+		b.WriteString("\n\n【Hook 模式】\n")
+		b.WriteString(hook)
+	}
+	if structure := strings.TrimSpace(in.Formula.Structure); structure != "" {
+		b.WriteString("\n\n【結構節奏】\n")
+		b.WriteString(structure)
+	}
+	if len(in.Formula.ReplicationTips) > 0 {
+		b.WriteString("\n\n【複製技巧】\n")
+		b.WriteString(strings.Join(in.Formula.ReplicationTips, "\n"))
+	}
+	if len(in.Formula.Avoid) > 0 {
+		b.WriteString("\n\n【避免】\n")
+		b.WriteString(strings.Join(in.Formula.Avoid, "\n"))
+	}
+	if notes := strings.TrimSpace(in.ResearchNotes); notes != "" {
+		b.WriteString("\n\n【周邊知識參考】\n")
+		b.WriteString(notes)
+	}
+	if src := strings.TrimSpace(in.Formula.SourcePostText); src != "" {
+		b.WriteString("\n\n【參考原文（僅學結構，勿抄內容）】\n")
+		b.WriteString(src)
+	}
+	b.WriteString("\n\n請產出一篇可直接發布的 Threads 貼文 JSON。")
+	return b.String()
+}
+
+func GenerateDraft(ctx context.Context, ai domai.UseCase, req domai.GenerateRequest, in GenerateInput) (*GeneratedDraft, error) {
+	temp := 0.75
+	req.System = BuildGenerateSystemPrompt()
+	req.Messages = []domai.Message{{Role: "user", Content: BuildGenerateUserPrompt(in)}}
+	req.Temperature = &temp
+	out, err := ai.GenerateText(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	return ParseGeneratedDraft(out.Text)
+}
+
+func ParseGeneratedDraft(raw string) (*GeneratedDraft, error) {
+	raw = strings.TrimSpace(raw)
+	start := strings.Index(raw, "{")
+	end := strings.LastIndex(raw, "}")
+	if start < 0 || end <= start {
+		return nil, fmt.Errorf("generate output missing json object")
+	}
+	var draft GeneratedDraft
+	if err := json.Unmarshal([]byte(raw[start:end+1]), &draft); err != nil {
+		return nil, fmt.Errorf("parse generated draft: %w", err)
+	}
+	draft.Text = strings.TrimSpace(draft.Text)
+	if draft.Text == "" {
+		return nil, fmt.Errorf("generated draft missing text")
+	}
+	return &draft, nil
+}

backend/internal/library/knowledge/graph.go

@@ -80,6 +80,32 @@ func TotalTagCandidates(nodes []Node) int {
 	return count
 }
 
+// PreserveNodeSelectionByLabel reapplies user scan selections after graph regen changes node IDs.
+func PreserveNodeSelectionByLabel(nodes []Node, previous []Node) {
+	if len(nodes) == 0 || len(previous) == 0 {
+		return
+	}
+	selected := map[string]struct{}{}
+	for _, node := range previous {
+		if !node.SelectedForScan {
+			continue
+		}
+		label := strings.ToLower(strings.TrimSpace(node.Label))
+		if label != "" {
+			selected[label] = struct{}{}
+		}
+	}
+	if len(selected) == 0 {
+		return
+	}
+	for i := range nodes {
+		label := strings.ToLower(strings.TrimSpace(nodes[i].Label))
+		if _, ok := selected[label]; ok {
+			nodes[i].SelectedForScan = true
+		}
+	}
+}
+
 func NodeByID(nodes []Node, id string) (Node, bool) {
 	id = strings.TrimSpace(id)
 	for _, node := range nodes {

backend/internal/library/knowledge/graph_rescore.go

@@ -0,0 +1,110 @@
+package knowledge
+
+// RescoreGraphIntentFit recomputes node productFitScore using:
+//  1. weighted intent similarity (product + research map)
+//  2. graph proximity propagation from high-fit core nodes
+//  3. tangential-topic penalty
+func RescoreGraphIntentFit(graph *Graph, in PatrolTagInput) {
+	if graph == nil || len(graph.Nodes) == 0 {
+		return
+	}
+	profile := BuildIntentProfile(in)
+	intentScores := make([]int, len(graph.Nodes))
+	for i, node := range graph.Nodes {
+		intentScores[i] = ScoreIntentSimilarity(NodeIntentText(node), profile)
+	}
+	propagated := propagateIntentAlongGraph(graph.Nodes, graph.Edges, intentScores)
+
+	for i := range graph.Nodes {
+		node := &graph.Nodes[i]
+		semantic := intentScores[i]
+		if propagated[i] > semantic {
+			semantic = propagated[i]
+		}
+		llmScore := node.ProductFitScore
+		if llmScore <= 0 {
+			llmScore = defaultProductFit(node.NodeKind, node.Layer)
+		}
+
+		layerBlend := 0.5 + float64(minInt(node.Layer, 3))*0.08
+		blended := int(float64(semantic)*layerBlend + float64(llmScore)*(1.0-layerBlend))
+		if IsTangentialToIntent(NodeIntentText(*node), profile) {
+			blended = minInt(blended, 28)
+		}
+		if blended < 0 {
+			blended = 0
+		}
+		if blended > 100 {
+			blended = 100
+		}
+		node.ProductFitScore = blended
+	}
+}
+
+func propagateIntentAlongGraph(nodes []Node, edges []Edge, intentScores []int) []int {
+	if len(nodes) == 0 {
+		return nil
+	}
+	idIndex := map[string]int{}
+	for i, node := range nodes {
+		idIndex[node.ID] = i
+	}
+	adj := make([][]int, len(nodes))
+	addEdge := func(from, to string) {
+		fi, okFrom := idIndex[from]
+		ti, okTo := idIndex[to]
+		if !okFrom || !okTo || fi == ti {
+			return
+		}
+		adj[fi] = append(adj[fi], ti)
+		adj[ti] = append(adj[ti], fi)
+	}
+	for _, edge := range edges {
+		addEdge(edge.From, edge.To)
+	}
+
+	out := make([]int, len(nodes))
+	copy(out, intentScores)
+	visited := make([]bool, len(nodes))
+	type queueItem struct {
+		idx  int
+		dist int
+	}
+	queue := make([]queueItem, 0, len(nodes))
+	for i, score := range intentScores {
+		if score >= 55 || nodes[i].Layer == 0 {
+			queue = append(queue, queueItem{idx: i, dist: 0})
+			visited[i] = true
+		}
+	}
+	for len(queue) > 0 {
+		item := queue[0]
+		queue = queue[1:]
+		if item.dist >= 3 {
+			continue
+		}
+		base := intentScores[item.idx]
+		if base <= 0 {
+			base = out[item.idx]
+		}
+		decayed := int(float64(base) * powDecay(0.74, item.dist+1))
+		for _, next := range adj[item.idx] {
+			if decayed > out[next] {
+				out[next] = decayed
+			}
+			if !visited[next] {
+				visited[next] = true
+				queue = append(queue, queueItem{idx: next, dist: item.dist + 1})
+			}
+		}
+	}
+	return out
+}
+
+func powDecay(base float64, exp int) float64 {
+	out := 1.0
+	for i := 0; i < exp; i++ {
+		out *= base
+	}
+	return out
+}

backend/internal/library/knowledge/graph_selection_test.go

@@ -0,0 +1,21 @@
+package knowledge
+
+import "testing"
+
+func TestPreserveNodeSelectionByLabel(t *testing.T) {
+	previous := []Node{
+		{ID: "old-1", Label: "化療後 皮膚乾", SelectedForScan: true},
+		{ID: "old-2", Label: "無關節點", SelectedForScan: false},
+	}
+	nodes := []Node{
+		{ID: "new-1", Label: "化療後 皮膚乾"},
+		{ID: "new-2", Label: "新痛點"},
+	}
+	PreserveNodeSelectionByLabel(nodes, previous)
+	if !nodes[0].SelectedForScan {
+		t.Fatal("expected first node selection to be preserved by label")
+	}
+	if nodes[1].SelectedForScan {
+		t.Fatal("expected unrelated node to stay unselected")
+	}
+}

backend/internal/library/knowledge/patrol_input.go

@@ -13,6 +13,7 @@ type PatrolTagInput struct {
 	ProductName     string
 	ProductFeatures string
 	AudienceSummary string
+	TargetAudience  string
 	MatchTags       []string
 	Questions       []string
 	Pillars         []string
@@ -65,6 +66,7 @@ func PatrolTagInputFromBrand(brand *branddomain.BrandSummary, productBrief strin
 		ProductName:     productName,
 		ProductFeatures: features,
 		AudienceSummary: strings.TrimSpace(brand.ResearchMap.AudienceSummary),
+		TargetAudience:  strings.TrimSpace(brand.TargetAudience),
 		MatchTags:       matchTagsFromBrand(brand),
 		Questions:       append([]string{}, brand.ResearchMap.Questions...),
 		Pillars:         append([]string{}, brand.ResearchMap.Pillars...),
@@ -72,6 +74,23 @@ func PatrolTagInputFromBrand(brand *branddomain.BrandSummary, productBrief strin
 	}
 }
 
+// OverlayResearchMap copies topic-level research map fields onto patrol input.
+func OverlayResearchMap(in PatrolTagInput, audienceSummary string, questions, pillars, patrolKeywords []string) PatrolTagInput {
+	if strings.TrimSpace(audienceSummary) != "" {
+		in.AudienceSummary = strings.TrimSpace(audienceSummary)
+	}
+	if len(questions) > 0 {
+		in.Questions = append([]string{}, questions...)
+	}
+	if len(pillars) > 0 {
+		in.Pillars = append([]string{}, pillars...)
+	}
+	if len(patrolKeywords) > 0 {
+		in.PatrolKeywords = append([]string{}, patrolKeywords...)
+	}
+	return in
+}
+
 func productLabelFromBrand(brand *branddomain.BrandSummary) string {
 	if brand == nil {
 		return ""
@@ -134,9 +153,33 @@ func (in PatrolTagInput) HasProductContext() bool {
 		len(in.MatchTags) > 0
 }
 
+var patrolCoreValueTokens = []string{
+	"敏感", "無香", "抗敏", "低敏", "香精", "香料", "香味", "過敏", "皮膚",
+	"化療", "癌症", "乳癌", "荷爾蒙", "標靶", "病友",
+}
+
+func primaryPatrolValueAnchor(in PatrolTagInput) string {
+	blob := strings.ToLower(strings.TrimSpace(in.ProductName + " " + in.ProductFeatures + " " +
+		strings.Join(in.MatchTags, " ") + " " + strings.Join(in.Pillars, " ") + " " +
+		in.AudienceSummary + " " + in.TargetAudience))
+	priority := []string{"無香", "抗敏", "敏感", "化療", "癌症", "乳癌", "荷爾蒙", "過敏", "香味", "香精"}
+	for _, token := range priority {
+		if strings.Contains(blob, token) {
+			return token
+		}
+	}
+	for _, token := range patrolCoreValueTokens {
+		if strings.Contains(blob, token) {
+			return token
+		}
+	}
+	return ""
+}
+
 func productCategoryHint(productName, features string) string {
 	combined := productName + " " + features
 	for _, hint := range []string{
+		"洗衣精", "洗衣粉", "衣物", "洗碗精", "洗碗機", "碗盤",
 		"沐浴乳", "沐浴露", "洗髮精", "洗髮乳", "洗面乳", "洗面奶", "乳液", "精華",
 		"防曬", "卸妝", "潔面", "身體乳", "洗手乳", "清潔",
 	} {

backend/internal/library/knowledge/patrol_phrase.go

@@ -162,6 +162,48 @@ func splitPatrolChunks(text string) []string {
 	return []string{head, tail}
 }
 
+// AnchorPatrolTagToProduct injects product category tokens when a tag lacks product context.
+func AnchorPatrolTagToProduct(tag string, in PatrolTagInput) string {
+	tag = strings.TrimSpace(tag)
+	if tag == "" {
+		return ""
+	}
+	hint := productCategoryHint(in.ProductName, in.ProductFeatures)
+	if hint == "" {
+		for _, matchTag := range in.MatchTags {
+			if h := productCategoryHint(matchTag, ""); h != "" {
+				hint = h
+				break
+			}
+		}
+	}
+	if hint == "" {
+		return tag
+	}
+	lowerTag := strings.ToLower(tag)
+	if strings.Contains(lowerTag, strings.ToLower(hint)) {
+		return tag
+	}
+	for _, matchTag := range in.MatchTags {
+		matchTag = strings.TrimSpace(strings.ToLower(matchTag))
+		if len([]rune(matchTag)) >= 2 && strings.Contains(lowerTag, matchTag) {
+			return tag
+		}
+	}
+	anchor := hint
+	if valueAnchor := primaryPatrolValueAnchor(in); valueAnchor != "" {
+		anchor = strings.TrimSpace(valueAnchor + " " + hint)
+	}
+	anchored := strings.TrimSpace(anchor + " " + tag)
+	if utf8.RuneCountInString(anchored) > maxPatrolTagRunes {
+		anchored = truncateRunes(anchor+" "+compressPatrolKeywords(tag), maxPatrolTagRunes)
+	}
+	if utf8.RuneCountInString(anchored) < minPatrolTagRunes {
+		return tag
+	}
+	return anchored
+}
+
 func ensurePatrolIntent(phrase, intent string) string {
 	phrase = strings.TrimSpace(phrase)
 	if phrase == "" {

backend/internal/library/knowledge/patrol_phrase_test.go

@@ -1,6 +1,9 @@
 package knowledge
 
-import "testing"
+import (
+	"strings"
+	"testing"
+)
 
 func TestPatrolTagFromQuestionPreservesSearchPhrase(t *testing.T) {
 	got := PatrolTagFromQuestion("化療後皮膚敏感要換什麼沐浴乳")
@@ -9,6 +12,35 @@ func TestPatrolTagFromQuestionPreservesSearchPhrase(t *testing.T) {
 	}
 }
 
+func TestAnchorPatrolTagToProductInjectsCategory(t *testing.T) {
+	in := PatrolTagInput{
+		ProductName: "天然洗衣精",
+		MatchTags:   []string{"洗衣精", "衣物清潔"},
+	}
+	got := AnchorPatrolTagToProduct("敏感肌 推薦", in)
+	if got == "敏感肌 推薦" {
+		t.Fatal("expected product category to be injected into generic tag")
+	}
+	if !strings.Contains(got, "洗衣") {
+		t.Fatalf("expected laundry anchor in %q", got)
+	}
+}
+
+func TestAnchorPatrolTagToProductPrefersValueAnchor(t *testing.T) {
+	in := PatrolTagInput{
+		ProductName:     "抗敏無香洗衣精",
+		ProductFeatures: "完全無香、抗敏、適合化療族群",
+		MatchTags:       []string{"無香", "洗衣精"},
+	}
+	got := AnchorPatrolTagToProduct("皮膚癢 推薦", in)
+	if !strings.Contains(got, "無香") {
+		t.Fatalf("expected value anchor in %q", got)
+	}
+	if !strings.Contains(got, "洗衣精") {
+		t.Fatalf("expected product form in %q", got)
+	}
+}
+
 func TestPatrolTagFromQuestionCompressesGenericLabel(t *testing.T) {
 	got := PatrolTagFromQuestion("敏感肌保養")
 	if got == "敏感肌保養" {

backend/internal/library/knowledge/patrol_rank.go

@@ -5,7 +5,27 @@ import (
 	"strings"
 )
 
-const MaxTopPatrolTags = 8
+const MaxTopPatrolTags = 10
+const MaxScanPatrolKeywords = 10
+
+// SelectedPatrolNodes returns nodes flagged for scan.
+func SelectedPatrolNodes(nodes []Node) []Node {
+	out := make([]Node, 0, len(nodes))
+	for _, node := range nodes {
+		if node.SelectedForScan {
+			out = append(out, node)
+		}
+	}
+	return out
+}
+
+// NodesForPatrolKeywordDerivation prefers user-selected graph nodes when present.
+func NodesForPatrolKeywordDerivation(nodes []Node) []Node {
+	if selected := SelectedPatrolNodes(nodes); len(selected) > 0 {
+		return selected
+	}
+	return nodes
+}
 
 type PatrolTagCandidate struct {
 	Tag    string
@@ -24,19 +44,20 @@ func BuildPatrolCandidates(in PatrolTagInput, nodes []Node) []PatrolTagCandidate
 		addPatrolCandidate(&out, tag, 120-i, "手動精選", patrolIntentRelevance)
 	}
 	for i, q := range in.Questions {
-		addPatrolCandidate(&out, PatrolTagFromQuestion(q), scoreQuestion(i)+12, "受眾提問", patrolIntentRelevance)
+		addPatrolCandidate(&out, AnchorPatrolTagToProduct(PatrolTagFromQuestion(q), in), scoreQuestion(i)+12, "受眾提問", patrolIntentRelevance)
 	}
 	for i, pillar := range in.Pillars {
-		addPatrolCandidate(&out, PatrolTagFromPillar(pillar), scorePillar(i)+6, "內容支柱", patrolIntentRelevance)
+		addPatrolCandidate(&out, AnchorPatrolTagToProduct(PatrolTagFromPillar(pillar), in), scorePillar(i)+6, "內容支柱", patrolIntentRelevance)
 	}
 	for i, matchTag := range in.MatchTags {
-		addPatrolCandidate(&out, patrolTagFromSource(matchTag, patrolIntentRelevance), scoreMatchTag(i), "產品匹配", patrolIntentRelevance)
+		addPatrolCandidate(&out, AnchorPatrolTagToProduct(patrolTagFromSource(matchTag, patrolIntentRelevance), in), scoreMatchTag(i), "產品匹配", patrolIntentRelevance)
 	}
 	if in.ProductName != "" {
-		addPatrolCandidate(&out, patrolTagFromSource(in.ProductName, patrolIntentRelevance), scoreProduct(), "置入產品", patrolIntentRelevance)
+		addPatrolCandidate(&out, AnchorPatrolTagToProduct(patrolTagFromSource(in.ProductName, patrolIntentRelevance), in), scoreProduct(), "置入產品", patrolIntentRelevance)
 	}
-	for _, node := range nodes {
-		if !IsPainNode(node) && node.Layer > 1 {
+	nodesToUse := NodesForPatrolKeywordDerivation(nodes)
+	for _, node := range nodesToUse {
+		if len(SelectedPatrolNodes(nodes)) == 0 && !IsPainNode(node) && node.Layer > 1 {
 			continue
 		}
 		nodeScore := scoreNode(node)
@@ -216,7 +237,7 @@ func scoreNode(node Node) int {
 		base += 8
 	}
 	if node.ProductFitScore > 0 {
-		base += node.ProductFitScore / 6
+		base += node.ProductFitScore / 5
 	}
 	return base
 }

backend/internal/library/knowledge/patrol_rank_test.go

@@ -13,9 +13,14 @@ func TestSelectTopPatrolTagsLimitsAndDedupes(t *testing.T) {
 		{Tag: "病友 沐浴乳", Score: 70, Reason: "周邊情境", Intent: patrolIntentRelevance},
 		{Tag: "抗敏 沐浴乳", Score: 65, Reason: "置入產品", Intent: patrolIntentRelevance},
 		{Tag: "香精 過敏", Score: 60, Reason: "周邊情境", Intent: patrolIntentRelevance},
+		{Tag: "標靶 治療 沐浴", Score: 58, Reason: "周邊情境", Intent: patrolIntentRelevance},
+		{Tag: "無香 沐浴乳 請問", Score: 56, Reason: "受眾提問", Intent: patrolIntentRelevance},
 	}, MaxTopPatrolTags)
-	if len(tags) != MaxTopPatrolTags {
-		t.Fatalf("expected %d tags, got %d: %v", MaxTopPatrolTags, len(tags), tags)
+	if len(tags) > MaxTopPatrolTags {
+		t.Fatalf("expected at most %d tags, got %d: %v", MaxTopPatrolTags, len(tags), tags)
+	}
+	if len(tags) < 8 {
+		t.Fatalf("expected at least 8 deduped tags, got %d: %v", len(tags), tags)
 	}
 	if tags[0] != "化療 沐浴乳" {
 		t.Fatalf("expected highest score first, got %q", tags[0])

backend/internal/library/knowledge/patrol_resolve.go

@@ -1,13 +1,16 @@
 package knowledge
 
-// ResolveScanPatrolKeywords picks keywords for placement-scan in UI/API order:
-// explicit request > saved research map > auto-ranked from map + graph nodes.
+// ResolveScanPatrolKeywords picks the most relevant search phrases for the Search API.
+// Research map and graph nodes are inputs; UI display order is not preserved.
 func ResolveScanPatrolKeywords(explicit, saved []string, input PatrolTagInput, nodes []Node) []string {
-	if keywords := NormalizePatrolKeywordList(explicit); len(keywords) > 0 {
-		return keywords
-	}
-	if keywords := NormalizePatrolKeywordList(saved); len(keywords) > 0 {
-		return keywords
-	}
-	return NormalizePatrolKeywordList(CollectPatrolTagsFromGraph(input, nodes))
+	nodes = NodesForPatrolKeywordDerivation(nodes)
+	return SelectBestSearchKeywords(explicit, saved, input, nodes, MaxScanPatrolKeywords)
+}
+
+func capPatrolKeywordList(keywords []string, limit int) []string {
+	keywords = NormalizePatrolKeywordList(keywords)
+	if limit <= 0 || len(keywords) <= limit {
+		return keywords
+	}
+	return keywords[:limit]
 }

backend/internal/library/knowledge/patrol_resolve_test.go

@@ -2,15 +2,25 @@ package knowledge
 
 import "testing"
 
-func TestResolveScanPatrolKeywordsPrefersExplicit(t *testing.T) {
+func TestResolveScanPatrolKeywordsIncludesExplicitHint(t *testing.T) {
 	got := ResolveScanPatrolKeywords(
 		[]string{"手動 關鍵字"},
 		[]string{"已儲存"},
 		PatrolTagInput{Questions: []string{"敏感肌 怎麼辦"}},
 		nil,
 	)
-	if len(got) != 1 || got[0] != "手動 關鍵字" {
-		t.Fatalf("ResolveScanPatrolKeywords() = %#v, want explicit keyword", got)
+	if len(got) == 0 {
+		t.Fatal("expected ranked keywords")
+	}
+	found := false
+	for _, kw := range got {
+		if kw == "手動 關鍵字" {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatalf("ResolveScanPatrolKeywords() = %#v, want explicit hint included", got)
 	}
 }
 
@@ -22,3 +32,29 @@ func TestResolveScanPatrolKeywordsFromResearchMapWithoutGraph(t *testing.T) {
 		t.Fatal("expected research map questions to produce patrol keywords without graph nodes")
 	}
 }
+
+func TestResolveScanPatrolKeywordsPrefersSelectedNodes(t *testing.T) {
+	nodes := []Node{
+		{ID: "pain", Label: "化療後 皮膚乾", SelectedForScan: true, ProductFitScore: 88, NodeKind: "pain", DerivedTags: DerivedTags{Relevance: []string{"化療後 皮膚乾 沐浴乳"}}},
+		{ID: "skip", Label: "無關節點", SelectedForScan: false, ProductFitScore: 90, DerivedTags: DerivedTags{Relevance: []string{"不該出現"}}},
+	}
+	got := ResolveScanPatrolKeywords(nil, nil, PatrolTagInput{}, nodes)
+	if len(got) == 0 {
+		t.Fatal("expected selected node to produce patrol keywords")
+	}
+	found := false
+	for _, kw := range got {
+		if kw == "化療後 皮膚乾 沐浴乳" || kw == "化療後 皮膚乾" {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatalf("expected selected node keyword, got %#v", got)
+	}
+	for _, kw := range got {
+		if kw == "不該出現" {
+			t.Fatalf("unselected node leaked into keywords: %#v", got)
+		}
+	}
+}

backend/internal/library/knowledge/patrol_search.go

@@ -0,0 +1,82 @@
+package knowledge
+
+import (
+	"sort"
+	"strings"
+)
+
+// SelectBestSearchKeywords pools research map, graph, product, and optional hints,
+// then returns the most intent-relevant phrases for Search API (not UI display order).
+func SelectBestSearchKeywords(explicit, saved []string, in PatrolTagInput, nodes []Node, limit int) []string {
+	if limit <= 0 {
+		limit = MaxScanPatrolKeywords
+	}
+	profile := BuildIntentProfile(in)
+	candidates := BuildPatrolCandidates(in, nodes)
+
+	for i, tag := range NormalizePatrolKeywordList(explicit) {
+		addPatrolCandidate(&candidates, tag, 156-i, "掃描指定", patrolIntentRelevance)
+	}
+	for i, tag := range NormalizePatrolKeywordList(saved) {
+		if containsNormalizedTag(explicit, tag) {
+			continue
+		}
+		addPatrolCandidate(&candidates, tag, 88-i, "研究地圖儲存", patrolIntentRelevance)
+	}
+
+	type ranked struct {
+		tag   string
+		score int
+	}
+	scored := make([]ranked, 0, len(candidates))
+	seen := map[string]struct{}{}
+	for _, item := range selectTopPatrolCandidates(candidates, len(candidates)+32) {
+		tag := strings.TrimSpace(item.Tag)
+		if tag == "" {
+			continue
+		}
+		key := patrolTagDedupeKey(tag)
+		if _, ok := seen[key]; ok {
+			continue
+		}
+		seen[key] = struct{}{}
+		if IsTangentialToIntent(tag, profile) {
+			continue
+		}
+		intent := ScoreIntentSimilarity(tag, profile)
+		if intent < 8 && item.Score < 65 {
+			continue
+		}
+		final := (item.Score*2 + intent*4) / 6
+		if final <= 0 {
+			continue
+		}
+		scored = append(scored, ranked{tag: tag, score: final})
+	}
+
+	sort.SliceStable(scored, func(i, j int) bool {
+		if scored[i].score == scored[j].score {
+			return scored[i].tag < scored[j].tag
+		}
+		return scored[i].score > scored[j].score
+	})
+
+	out := make([]string, 0, limit)
+	for _, item := range scored {
+		out = append(out, item.tag)
+		if len(out) >= limit {
+			break
+		}
+	}
+	return out
+}
+
+func containsNormalizedTag(items []string, target string) bool {
+	targetKey := patrolTagDedupeKey(target)
+	for _, item := range items {
+		if patrolTagDedupeKey(item) == targetKey {
+			return true
+		}
+	}
+	return false
+}

backend/internal/library/knowledge/patrol_search_test.go

@@ -0,0 +1,58 @@
+package knowledge
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestSelectBestSearchKeywordsRanksByIntentNotSavedOrder(t *testing.T) {
+	in := PatrolTagInput{
+		ProductName:     "抗敏無香洗衣精",
+		ProductFeatures: "完全無香、抗敏、適合化療族群",
+		MatchTags:       []string{"無香", "抗敏", "洗衣精"},
+		Questions:       []string{"化療後想找不會刺激的洗衣精"},
+		Pillars:         []string{"無香洗衣", "化療後衣物清潔"},
+	}
+	got := SelectBestSearchKeywords(
+		nil,
+		[]string{"洗衣機 推薦", "無香 洗衣精 請問"},
+		in,
+		nil,
+		4,
+	)
+	if len(got) == 0 {
+		t.Fatal("expected ranked keywords")
+	}
+	for _, kw := range got {
+		if strings.Contains(kw, "洗衣機") {
+			t.Fatalf("expected weak saved keyword to lose ranking, got %#v", got)
+		}
+	}
+	found := false
+	for _, kw := range got {
+		if strings.Contains(kw, "無香") || strings.Contains(kw, "化療") {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatalf("expected intent-aligned keyword in %#v", got)
+	}
+}
+
+func TestSelectBestSearchKeywordsIncludesExplicitHint(t *testing.T) {
+	in := PatrolTagInput{
+		ProductName: "抗敏無香洗衣精",
+		MatchTags:   []string{"無香", "洗衣精"},
+	}
+	got := SelectBestSearchKeywords(
+		[]string{"化療 無香 洗衣精"},
+		[]string{"洗衣機 推薦"},
+		in,
+		nil,
+		3,
+	)
+	if len(got) == 0 || got[0] != "化療 無香 洗衣精" {
+		t.Fatalf("expected explicit hint to rank first, got %#v", got)
+	}
+}

backend/internal/library/knowledge/patrol_tags.go

@@ -55,23 +55,23 @@ func deriveFromResearchMapAndProduct(node Node, in PatrolTagInput) DerivedTags {
 	matches := isCoreNode(node)
 
 	for i, q := range in.Questions {
-		if matches || nodeMatchesResearchText(node, q) {
-			addPatrolCandidate(&candidates, PatrolTagFromQuestion(q), scoreQuestion(i)+10, "受眾提問", patrolIntentRelevance)
-			addPatrolCandidate(&candidates, patrolTagFromSource(q, patrolIntentRecency), scoreQuestion(i)-2, "受眾提問", patrolIntentRecency)
+		if matches || nodeMatchesResearchText(node, q, in) {
+			addPatrolCandidate(&candidates, AnchorPatrolTagToProduct(PatrolTagFromQuestion(q), in), scoreQuestion(i)+10, "受眾提問", patrolIntentRelevance)
+			addPatrolCandidate(&candidates, AnchorPatrolTagToProduct(patrolTagFromSource(q, patrolIntentRecency), in), scoreQuestion(i)-2, "受眾提問", patrolIntentRecency)
 		}
 	}
 	for i, pillar := range in.Pillars {
-		if matches || nodeMatchesResearchText(node, pillar) {
-			addPatrolCandidate(&candidates, PatrolTagFromPillar(pillar), scorePillar(i)+4, "內容支柱", patrolIntentRelevance)
+		if matches || nodeMatchesResearchText(node, pillar, in) {
+			addPatrolCandidate(&candidates, AnchorPatrolTagToProduct(PatrolTagFromPillar(pillar), in), scorePillar(i)+4, "內容支柱", patrolIntentRelevance)
 		}
 	}
 	for i, matchTag := range in.MatchTags {
-		if matches || nodeMatchesResearchText(node, matchTag) {
-			addPatrolCandidate(&candidates, patrolTagFromSource(matchTag, patrolIntentRelevance), scoreMatchTag(i), "產品匹配", patrolIntentRelevance)
+		if matches || nodeMatchesResearchText(node, matchTag, in) {
+			addPatrolCandidate(&candidates, AnchorPatrolTagToProduct(patrolTagFromSource(matchTag, patrolIntentRelevance), in), scoreMatchTag(i), "產品匹配", patrolIntentRelevance)
 		}
 	}
-	if in.ProductName != "" && (matches || nodeMatchesResearchText(node, in.ProductName)) {
-		addPatrolCandidate(&candidates, patrolTagFromSource(in.ProductName, patrolIntentRelevance), scoreProduct(), "置入產品", patrolIntentRelevance)
+	if in.ProductName != "" && (matches || nodeMatchesResearchText(node, in.ProductName, in)) {
+		addPatrolCandidate(&candidates, AnchorPatrolTagToProduct(patrolTagFromSource(in.ProductName, patrolIntentRelevance), in), scoreProduct(), "置入產品", patrolIntentRelevance)
 	}
 
 	if len(candidates) == 0 && IsPainNode(node) {
@@ -79,16 +79,16 @@ func deriveFromResearchMapAndProduct(node Node, in PatrolTagInput) DerivedTags {
 			if i >= 2 {
 				break
 			}
-			addPatrolCandidate(&candidates, PatrolTagFromQuestion(q), scoreQuestion(i)+8, "受眾提問", patrolIntentRelevance)
+			addPatrolCandidate(&candidates, AnchorPatrolTagToProduct(PatrolTagFromQuestion(q), in), scoreQuestion(i)+8, "受眾提問", patrolIntentRelevance)
 		}
 	}
 	if len(candidates) == 0 && IsPainNode(node) {
-		addPatrolCandidate(&candidates, patrolTagFromSource(in.ProductName, patrolIntentRelevance), scoreProduct(), "置入產品", patrolIntentRelevance)
+		addPatrolCandidate(&candidates, AnchorPatrolTagToProduct(patrolTagFromSource(in.ProductName, patrolIntentRelevance), in), scoreProduct(), "置入產品", patrolIntentRelevance)
 		for i, matchTag := range in.MatchTags {
 			if i >= 1 {
 				break
 			}
-			addPatrolCandidate(&candidates, patrolTagFromSource(matchTag, patrolIntentRelevance), scoreMatchTag(i), "產品匹配", patrolIntentRelevance)
+			addPatrolCandidate(&candidates, AnchorPatrolTagToProduct(patrolTagFromSource(matchTag, patrolIntentRelevance), in), scoreMatchTag(i), "產品匹配", patrolIntentRelevance)
 		}
 	}
 
@@ -107,7 +107,7 @@ func isCoreNode(node Node) bool {
 	return node.Layer == 0 || strings.EqualFold(strings.TrimSpace(node.Type), "core")
 }
 
-func nodeMatchesResearchText(node Node, text string) bool {
+func nodeMatchesResearchText(node Node, text string, in PatrolTagInput) bool {
 	label := strings.TrimSpace(node.Label)
 	text = strings.TrimSpace(text)
 	if label == "" || text == "" {
@@ -116,7 +116,12 @@ func nodeMatchesResearchText(node Node, text string) bool {
 	if label == text || strings.Contains(text, label) || strings.Contains(label, text) {
 		return true
 	}
-	return sharesMeaningfulSubstring(label, text)
+	if sharesMeaningfulSubstring(label, text) {
+		return true
+	}
+	profile := BuildIntentProfile(in)
+	joined := strings.TrimSpace(NodeIntentText(node) + " " + text)
+	return ScoreIntentSimilarity(joined, profile) >= 40
 }
 
 func deriveFallbackPatrolTags(node Node) DerivedTags {

backend/internal/library/knowledge/research_map_fit.go

@@ -0,0 +1,59 @@
+package knowledge
+
+import (
+	"sort"
+	"strings"
+)
+
+// RankStringsByIntent sorts phrases by semantic proximity to product + research map.
+func RankStringsByIntent(items []string, in PatrolTagInput) []string {
+	if len(items) <= 1 {
+		return append([]string{}, items...)
+	}
+	profile := BuildIntentProfile(in)
+	type scored struct {
+		text  string
+		score int
+	}
+	scores := make([]scored, 0, len(items))
+	for _, item := range items {
+		item = strings.TrimSpace(item)
+		if item == "" {
+			continue
+		}
+		scores = append(scores, scored{
+			text:  item,
+			score: ScoreIntentSimilarity(item, profile),
+		})
+	}
+	sort.SliceStable(scores, func(i, j int) bool {
+		if scores[i].score == scores[j].score {
+			return scores[i].text < scores[j].text
+		}
+		return scores[i].score > scores[j].score
+	})
+	out := make([]string, 0, len(scores))
+	for _, item := range scores {
+		out = append(out, item.text)
+	}
+	return out
+}
+
+// FilterPatrolKeywordsByIntent drops low-intent patrol keywords from research map output.
+func FilterPatrolKeywordsByIntent(items []string, in PatrolTagInput, minScore int) []string {
+	if minScore <= 0 {
+		return RankStringsByIntent(items, in)
+	}
+	profile := BuildIntentProfile(in)
+	out := make([]string, 0, len(items))
+	for _, item := range items {
+		item = strings.TrimSpace(item)
+		if item == "" {
+			continue
+		}
+		if ScoreIntentSimilarity(item, profile) >= minScore {
+			out = append(out, item)
+		}
+	}
+	return out
+}

backend/internal/library/knowledge/search_keyword_shape.go

@@ -0,0 +1,122 @@
+package knowledge
+
+import (
+	"strings"
+	"unicode/utf8"
+)
+
+const (
+	maxThreadsSearchRunes   = 14
+	maxWebRecencyCoreRunes  = 12
+	maxWebRelevanceTagRunes = 16
+)
+
+var searchIntentMarkers = []string{"推薦", "請問", "怎麼辦", "好用嗎", "有人", "求助", "請益", "有推薦"}
+
+// ShortPatrolSearchCore compresses a patrol tag for Threads API / recency Search API.
+// Keeps pain + product tokens; drops filler and redundant intent words (RECENT/TOP handles freshness).
+func ShortPatrolSearchCore(tag string) string {
+	tag = strings.TrimSpace(tag)
+	if tag == "" {
+		return ""
+	}
+	tokens := selectSearchTokens(tag, 3)
+	if len(tokens) == 0 {
+		return truncateRunes(stripSearchIntent(tag), maxThreadsSearchRunes)
+	}
+	core := strings.Join(tokens, " ")
+	return truncateRunes(core, maxWebRecencyCoreRunes)
+}
+
+// ThreadsAPIKeyword is the plain keyword sent to official Threads keyword search.
+func ThreadsAPIKeyword(tag string) string {
+	core := ShortPatrolSearchCore(tag)
+	if core != "" {
+		return core
+	}
+	return truncateRunes(stripSearchIntent(tag), maxThreadsSearchRunes)
+}
+
+// FullPatrolWebSearchTag keeps a slightly longer phrase for relevance Search API (exact-match quotes).
+func FullPatrolWebSearchTag(tag string) string {
+	tag = strings.TrimSpace(tag)
+	if tag == "" {
+		return ""
+	}
+	if !hasSearchIntentMarker(tag) {
+		candidate := strings.TrimSpace(tag + " 推薦")
+		if utf8.RuneCountInString(candidate) <= maxWebRelevanceTagRunes {
+			tag = candidate
+		}
+	}
+	if utf8.RuneCountInString(tag) <= maxWebRelevanceTagRunes {
+		return tag
+	}
+	tokens := selectSearchTokens(tag, 4)
+	if len(tokens) == 0 {
+		return truncateRunes(tag, maxWebRelevanceTagRunes)
+	}
+	full := strings.Join(tokens, " ")
+	if !hasSearchIntentMarker(full) {
+		withIntent := strings.TrimSpace(full + " 推薦")
+		if utf8.RuneCountInString(withIntent) <= maxWebRelevanceTagRunes {
+			return withIntent
+		}
+	}
+	return truncateRunes(full, maxWebRelevanceTagRunes)
+}
+
+func selectSearchTokens(tag string, maxTokens int) []string {
+	tag = stripSearchIntent(tag)
+	parts := []string{}
+	seen := map[string]struct{}{}
+	add := func(token string) {
+		token = strings.TrimSpace(token)
+		if isPatrolFiller(token) || len([]rune(token)) < 2 {
+			return
+		}
+		if _, ok := seen[token]; ok {
+			return
+		}
+		seen[token] = struct{}{}
+		parts = append(parts, token)
+	}
+
+	for _, anchor := range patrolTopicAnchors {
+		if strings.Contains(tag, anchor) {
+			add(anchor)
+		}
+	}
+	for _, hint := range productFormHints {
+		if strings.Contains(tag, hint) {
+			add(hint)
+		}
+	}
+	for _, token := range intentTokenize(tag) {
+		add(token)
+		if len(parts) >= maxTokens {
+			break
+		}
+	}
+	if len(parts) > maxTokens {
+		parts = parts[:maxTokens]
+	}
+	return parts
+}
+
+func stripSearchIntent(tag string) string {
+	tag = strings.TrimSpace(tag)
+	for _, marker := range searchIntentMarkers {
+		tag = strings.ReplaceAll(tag, marker, " ")
+	}
+	return strings.Join(strings.Fields(tag), " ")
+}
+
+func hasSearchIntentMarker(tag string) bool {
+	for _, marker := range searchIntentMarkers {
+		if strings.Contains(tag, marker) {
+			return true
+		}
+	}
+	return false
+}

backend/internal/library/knowledge/search_keyword_shape_test.go

@@ -0,0 +1,37 @@
+package knowledge
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestShortPatrolSearchCoreDropsIntentNoise(t *testing.T) {
+	got := ShortPatrolSearchCore("化療 無香 洗衣精 推薦 請問")
+	if got == "" {
+		t.Fatal("expected non-empty core")
+	}
+	if len([]rune(got)) > maxThreadsSearchRunes {
+		t.Fatalf("core too long: %q", got)
+	}
+	if strings.Contains(got, "推薦") || strings.Contains(got, "請問") {
+		t.Fatalf("expected intent words stripped for API core, got %q", got)
+	}
+	if !strings.Contains(got, "無香") && !strings.Contains(got, "洗衣精") {
+		t.Fatalf("expected pain/product tokens kept, got %q", got)
+	}
+}
+
+func TestFullPatrolWebSearchTagKeepsIntent(t *testing.T) {
+	got := FullPatrolWebSearchTag("化療 無香 洗衣精")
+	if !strings.Contains(got, "推薦") && !strings.Contains(got, "請問") && !strings.Contains(got, "怎麼辦") {
+		t.Fatalf("expected relevance tag to include intent marker, got %q", got)
+	}
+}
+
+func TestThreadsAPIKeywordUsesShortCore(t *testing.T) {
+	long := "化療後皮膚敏感要換什麼無香洗衣精 推薦"
+	got := ThreadsAPIKeyword(long)
+	if got == "" || len([]rune(got)) > maxThreadsSearchRunes {
+		t.Fatalf("unexpected threads keyword %q", got)
+	}
+}

backend/internal/library/knowledge/semantic_fit.go

@@ -0,0 +1,289 @@
+package knowledge
+
+import (
+	"strings"
+	"unicode"
+)
+
+// IntentProfile is a weighted lexical intent model for product + research map.
+// It generalizes relevance beyond hardcoded category rules (e.g. 洗衣精 vs 洗衣機).
+type IntentProfile struct {
+	TokenWeights map[string]float64
+	BroadTokens  map[string]struct{}
+	Phrases      []weightedPhrase
+}
+
+type weightedPhrase struct {
+	Text   string
+	Weight float64
+}
+
+const (
+	intentWeightProduct     = 3.0
+	intentWeightFeature     = 2.8
+	intentWeightMatchTag    = 2.5
+	intentWeightQuestion    = 2.2
+	intentWeightPillar      = 2.0
+	intentWeightAudience    = 1.6
+	intentWeightPatrol      = 1.2
+	intentWeightSeed        = 1.0
+
+	tangentialBroadMin = 38
+	tangentialIntentMax = 30
+)
+
+var productFormHints = []string{
+	"洗衣精", "洗衣粉", "洗衣劑", "洗衣液",
+	"沐浴乳", "沐浴露", "洗髮精", "洗髮乳", "洗面乳",
+}
+
+// BuildIntentProfile materializes product + research-map text into a reusable relevance model.
+func BuildIntentProfile(in PatrolTagInput) IntentProfile {
+	profile := IntentProfile{
+		TokenWeights: map[string]float64{},
+		BroadTokens:  map[string]struct{}{},
+	}
+	addPhrase := func(text string, weight float64) {
+		text = strings.TrimSpace(text)
+		if text == "" || weight <= 0 {
+			return
+		}
+		profile.Phrases = append(profile.Phrases, weightedPhrase{Text: text, Weight: weight})
+		profile.addTokens(text, weight)
+	}
+
+	addPhrase(in.ProductName, intentWeightProduct)
+	addPhrase(in.ProductFeatures, intentWeightFeature)
+	for _, tag := range in.MatchTags {
+		addPhrase(tag, intentWeightMatchTag)
+	}
+	for _, q := range in.Questions {
+		addPhrase(q, intentWeightQuestion)
+	}
+	for _, pillar := range in.Pillars {
+		addPhrase(pillar, intentWeightPillar)
+	}
+	addPhrase(in.AudienceSummary, intentWeightAudience)
+	addPhrase(in.TargetAudience, intentWeightAudience)
+	for _, kw := range in.PatrolKeywords {
+		addPhrase(kw, intentWeightPatrol)
+	}
+
+	if hint := productCategoryHint(in.ProductName, in.ProductFeatures); hint != "" {
+		profile.markBroad(hint)
+	}
+	for _, hint := range productFormHints {
+		blob := strings.ToLower(in.ProductName + " " + in.ProductFeatures + " " + strings.Join(in.MatchTags, " "))
+		if strings.Contains(blob, hint) {
+			profile.markBroad(hint)
+		}
+	}
+	return profile
+}
+
+func (p *IntentProfile) addTokens(text string, weight float64) {
+	for _, token := range intentTokenize(text) {
+		if existing, ok := p.TokenWeights[token]; !ok || weight > existing {
+			p.TokenWeights[token] = weight
+		}
+	}
+}
+
+func (p *IntentProfile) markBroad(token string) {
+	token = strings.TrimSpace(strings.ToLower(token))
+	if token == "" {
+		return
+	}
+	p.BroadTokens[token] = struct{}{}
+	for _, part := range intentTokenize(token) {
+		p.BroadTokens[part] = struct{}{}
+	}
+}
+
+func (p IntentProfile) totalWeight() float64 {
+	sum := 0.0
+	for _, w := range p.TokenWeights {
+		sum += w
+	}
+	if sum <= 0 {
+		for _, phrase := range p.Phrases {
+			sum += phrase.Weight
+		}
+	}
+	return sum
+}
+
+// NodeIntentText combines node fields used for semantic fit.
+func NodeIntentText(node Node) string {
+	return strings.TrimSpace(strings.Join([]string{
+		node.Label,
+		node.Relation,
+		node.PlacementValue,
+		strings.Join(node.PatrolRelevance, " "),
+		strings.Join(node.PatrolRecency, " "),
+	}, " "))
+}
+
+// ScoreIntentSimilarity returns 0-100 weighted token overlap against the intent profile.
+func ScoreIntentSimilarity(text string, profile IntentProfile) int {
+	text = strings.ToLower(strings.TrimSpace(text))
+	if text == "" || len(profile.TokenWeights) == 0 {
+		return 0
+	}
+	matched := 0.0
+	for token, weight := range profile.TokenWeights {
+		if strings.Contains(text, token) {
+			matched += weight
+		}
+	}
+	total := profile.totalWeight()
+	if total <= 0 {
+		return 0
+	}
+	score := int((matched / total) * 100)
+	if score > 100 {
+		return 100
+	}
+	return score
+}
+
+// ScoreBroadSimilarity measures overlap with category-level tokens only.
+func ScoreBroadSimilarity(text string, profile IntentProfile) int {
+	text = strings.ToLower(strings.TrimSpace(text))
+	if text == "" || len(profile.BroadTokens) == 0 {
+		return 0
+	}
+	hits := 0
+	for token := range profile.BroadTokens {
+		if strings.Contains(text, token) {
+			hits++
+			continue
+		}
+		runes := []rune(token)
+		if len(runes) >= 2 && strings.Contains(text, string(runes[:2])) {
+			hits++
+		}
+	}
+	if hits == 0 {
+		return 0
+	}
+	denom := len(profile.BroadTokens)
+	if denom > 6 {
+		denom = 6
+	}
+	score := (hits * 100) / denom
+	if score > 100 {
+		return 100
+	}
+	return score
+}
+
+// IsTangentialToIntent detects same broad category but weak product-intent alignment.
+// Example: 洗衣機 vs 抗敏無香洗衣精 — shares 洗衣, lacks 無香/敏感/化療 intent.
+func IsTangentialToIntent(text string, profile IntentProfile) bool {
+	text = strings.ToLower(strings.TrimSpace(text))
+	if text == "" || len(profile.TokenWeights) == 0 {
+		return false
+	}
+	intentScore := ScoreIntentSimilarity(text, profile)
+	if intentScore >= tangentialIntentMax+10 {
+		return false
+	}
+	if hasCategoryStemDrift(text, profile) {
+		return true
+	}
+	broadScore := ScoreBroadSimilarity(text, profile)
+	if broadScore >= tangentialBroadMin {
+		return intentScore <= tangentialIntentMax
+	}
+	return false
+}
+
+func hasCategoryStemDrift(text string, profile IntentProfile) bool {
+	for broad := range profile.BroadTokens {
+		runes := []rune(broad)
+		if len(runes) < 2 {
+			continue
+		}
+		stem := string(runes[:2])
+		if !strings.Contains(text, stem) {
+			continue
+		}
+		if strings.Contains(text, broad) {
+			continue
+		}
+		for _, suffix := range []string{"機", "槽", "烘", "劑", "粉", "精", "乳", "露", "液", "皂"} {
+			alt := stem + suffix
+			if alt == broad || !strings.Contains(text, alt) {
+				continue
+			}
+			if !profile.matchesIntentToken(alt) {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func (p IntentProfile) matchesIntentToken(token string) bool {
+	if _, ok := p.TokenWeights[token]; ok {
+		return true
+	}
+	for intentToken := range p.TokenWeights {
+		if strings.Contains(token, intentToken) || strings.Contains(intentToken, token) {
+			return true
+		}
+	}
+	return false
+}
+
+func intentTokenize(text string) []string {
+	text = strings.ToLower(strings.TrimSpace(text))
+	if text == "" {
+		return nil
+	}
+	repl := strings.NewReplacer("，", " ", "、", " ", "。", " ", "；", " ", "/", " ", "｜", " ", "|", " ", "（", " ", "）", " ", "(", " ", ")", " ", "？", " ", "?", " ", "！", " ", "!", " ")
+	text = repl.Replace(text)
+	seen := map[string]struct{}{}
+	var out []string
+	add := func(token string) {
+		token = strings.Trim(token, `"'「」『』：:`)
+		if len([]rune(token)) < 2 {
+			return
+		}
+		if _, ok := seen[token]; ok {
+			return
+		}
+		seen[token] = struct{}{}
+		out = append(out, token)
+	}
+	for _, part := range strings.Fields(text) {
+		add(part)
+	}
+	if len(out) == 0 {
+		for _, chunk := range intentSplitRunes(text) {
+			add(chunk)
+		}
+	}
+	return out
+}
+
+func intentSplitRunes(s string) []string {
+	var out []string
+	var buf []rune
+	flush := func() {
+		if len(buf) >= 2 {
+			out = append(out, string(buf))
+		}
+		buf = buf[:0]
+	}
+	for _, r := range s {
+		if unicode.Is(unicode.Han, r) {
+			buf = append(buf, r)
+			continue
+		}
+		flush()
+	}
+	flush()
+	return out
+}

backend/internal/library/knowledge/semantic_fit_test.go

@@ -0,0 +1,53 @@
+package knowledge
+
+import "testing"
+
+func TestIsTangentialToIntentWashingMachineVsHypoallergenicDetergent(t *testing.T) {
+	profile := BuildIntentProfile(PatrolTagInput{
+		ProductName:     "抗敏無香洗衣精",
+		ProductFeatures: "完全無香、抗敏，適合敏感肌與化療族群",
+		MatchTags:       []string{"無香", "抗敏", "洗衣精"},
+		Pillars:         []string{"化療後衣物清潔", "無香洗衣"},
+		Questions:       []string{"化療後想找不會刺激的洗衣精"},
+	})
+	text := "請問洗脫烘洗衣機有推薦嗎？"
+	if !IsTangentialToIntent(text, profile) {
+		t.Fatal("expected washing machine post to be tangential to hypoallergenic detergent intent")
+	}
+}
+
+func TestIsTangentialToIntentAcceptsCorePain(t *testing.T) {
+	profile := BuildIntentProfile(PatrolTagInput{
+		ProductName:     "抗敏無香洗衣精",
+		ProductFeatures: "完全無香、抗敏",
+		MatchTags:       []string{"無香", "洗衣精"},
+	})
+	text := "化療後對香味很敏感，有無香洗衣精推薦嗎？"
+	if IsTangentialToIntent(text, profile) {
+		t.Fatal("expected core pain post to align with intent")
+	}
+}
+
+func TestRescoreGraphIntentFitPenalizesTangentialNode(t *testing.T) {
+	graph := Graph{
+		Seed: "無香 洗衣精",
+		Nodes: []Node{
+			{ID: "core", Label: "化療後對香味敏感", NodeKind: "pain", Layer: 0, ProductFitScore: 92, Relation: "需要無香洗衣精"},
+			{ID: "weak", Label: "洗衣機選購", NodeKind: "knowledge", Layer: 2, ProductFitScore: 72, Relation: "家電預算與容量"},
+		},
+		Edges: []Edge{{From: "core", To: "weak", Relation: "延伸"}},
+	}
+	in := PatrolTagInput{
+		ProductName:     "抗敏無香洗衣精",
+		ProductFeatures: "完全無香、抗敏",
+		MatchTags:       []string{"無香", "洗衣精"},
+		Questions:       []string{"化療後想找無香洗衣精"},
+	}
+	RescoreGraphIntentFit(&graph, in)
+	if graph.Nodes[0].ProductFitScore < 60 {
+		t.Fatalf("expected core node to stay high, got %d", graph.Nodes[0].ProductFitScore)
+	}
+	if graph.Nodes[1].ProductFitScore > 35 {
+		t.Fatalf("expected tangential node to be penalized, got %d", graph.Nodes[1].ProductFitScore)
+	}
+}

backend/internal/library/outreach/draft_context.go

@@ -0,0 +1,107 @@
+package outreach
+
+import (
+	"fmt"
+	"strings"
+
+	libkg "haixun-backend/internal/library/knowledge"
+	libplacement "haixun-backend/internal/library/placement"
+	brandentity "haixun-backend/internal/model/brand/domain/entity"
+	branddomain "haixun-backend/internal/model/brand/domain/usecase"
+	scanpostusecase "haixun-backend/internal/model/scan_post/domain/usecase"
+)
+
+func FindGraphNode(nodes []libkg.Node, nodeID string) *libkg.Node {
+	nodeID = strings.TrimSpace(nodeID)
+	if nodeID == "" {
+		return nil
+	}
+	for i := range nodes {
+		if nodes[i].ID == nodeID {
+			return &nodes[i]
+		}
+	}
+	return nil
+}
+
+func BuildPlacementReason(post *scanpostusecase.ScanPostSummary) string {
+	if post == nil {
+		return ""
+	}
+	parts := []string{}
+	if post.Priority == "gold" {
+		parts = append(parts, "雙軌命中（相關+近期）")
+	} else if post.Priority == "recent" {
+		parts = append(parts, "近期軌命中")
+	}
+	if post.SolvedByProduct {
+		parts = append(parts, "產品可解此需求")
+	}
+	if post.ProductFitScore > 0 {
+		parts = append(parts, fmt.Sprintf("產品匹配 %d", post.ProductFitScore))
+	}
+	return strings.Join(parts, "；")
+}
+
+func MergePlacementReason(base string, node *libkg.Node, post *scanpostusecase.ScanPostSummary) string {
+	parts := []string{}
+	if strings.TrimSpace(base) != "" {
+		parts = append(parts, strings.TrimSpace(base))
+	}
+	if node != nil {
+		if strings.TrimSpace(node.PlacementValue) != "" {
+			parts = append(parts, "置入價值 "+strings.TrimSpace(node.PlacementValue))
+		}
+		if node.ProductFitScore > 0 && (post == nil || post.ProductFitScore == 0) {
+			parts = append(parts, fmt.Sprintf("節點產品匹配 %d", node.ProductFitScore))
+		}
+	}
+	return strings.Join(parts, "；")
+}
+
+func ProductBriefForBrand(brand *branddomain.BrandSummary, productID, searchTag, postText string) string {
+	if brand == nil {
+		return ""
+	}
+	if product := PickProductForOutreach(brand, productID, searchTag, postText); product != nil {
+		merged := libplacement.BuildMergedProductContext(brand.DisplayName, product.ProductContext, product.Label)
+		merged = libplacement.ApplyPlacementURL(merged, product.PlacementURL)
+		if pb := libplacement.ProductBriefFromContext(merged); pb != "" {
+			return pb
+		}
+	}
+	if pb := libplacement.ProductBriefFromContext(brand.ProductContext); pb != "" {
+		return pb
+	}
+	return strings.TrimSpace(brand.ProductBrief)
+}
+
+func PickProductForOutreach(brand *branddomain.BrandSummary, preferredProductID, searchTag, postText string) *branddomain.ProductSummary {
+	if brand == nil || len(brand.Products) == 0 {
+		return nil
+	}
+	entities := make([]brandentity.Product, len(brand.Products))
+	for i := range brand.Products {
+		entities[i] = brandentity.Product{
+			ID:             brand.Products[i].ID,
+			Label:          brand.Products[i].Label,
+			ProductContext: brand.Products[i].ProductContext,
+			MatchTags:      append([]string(nil), brand.Products[i].MatchTags...),
+		}
+	}
+	if picked := libplacement.RecommendProductForPost(entities, searchTag, postText, preferredProductID); picked != nil {
+		for i := range brand.Products {
+			if brand.Products[i].ID == picked.ID {
+				return &brand.Products[i]
+			}
+		}
+	}
+	if id := strings.TrimSpace(preferredProductID); id != "" {
+		for i := range brand.Products {
+			if brand.Products[i].ID == id {
+				return &brand.Products[i]
+			}
+		}
+	}
+	return &brand.Products[0]
+}

backend/internal/library/outreach/draft_format.go

@@ -0,0 +1,77 @@
+package outreach
+
+import (
+	"strings"
+)
+
+func NormalizeDraftText(text string) string {
+	text = strings.ReplaceAll(text, "\r\n", "\n")
+	text = strings.ReplaceAll(text, "\r", "\n")
+	text = strings.TrimSpace(text)
+	text = humanizeDraftLineBreaks(text)
+	return trimDraftText(text)
+}
+
+func humanizeDraftLineBreaks(text string) string {
+	if text == "" || strings.Contains(text, "\n") {
+		return text
+	}
+	if len([]rune(text)) < 40 {
+		return text
+	}
+
+	sentences := splitSentences(text)
+	if len(sentences) <= 1 {
+		return text
+	}
+
+	paragraphs := make([]string, 0, (len(sentences)+1)/2)
+	for i := 0; i < len(sentences); {
+		end := i + 2
+		if end > len(sentences) {
+			end = len(sentences)
+		}
+		paragraphs = append(paragraphs, strings.Join(sentences[i:end], ""))
+		i = end
+	}
+	return strings.Join(paragraphs, "\n\n")
+}
+
+func splitSentences(text string) []string {
+	runes := []rune(text)
+	if len(runes) == 0 {
+		return nil
+	}
+	out := make([]string, 0, 4)
+	var current strings.Builder
+	for i := 0; i < len(runes); i++ {
+		ch := runes[i]
+		current.WriteRune(ch)
+		if !isSentenceEnd(ch) {
+			continue
+		}
+		// Keep ellipsis / repeated punctuation attached to the same sentence.
+		for i+1 < len(runes) && isSentenceEnd(runes[i+1]) {
+			i++
+			current.WriteRune(runes[i])
+		}
+		if sentence := strings.TrimSpace(current.String()); sentence != "" {
+			out = append(out, sentence)
+		}
+		current.Reset()
+	}
+	if tail := strings.TrimSpace(current.String()); tail != "" {
+		out = append(out, tail)
+	}
+	return out
+}
+
+func isSentenceEnd(ch rune) bool {
+	switch ch {
+	case '。', '！', '？', '!', '?', '…':
+		return true
+	default:
+		return false
+	}
+}
+

backend/internal/library/outreach/draft_format_test.go

@@ -0,0 +1,36 @@
+package outreach
+
+import "testing"
+
+func TestNormalizeDraftTextPreservesNewlines(t *testing.T) {
+	raw := "第一段。\n\n第二段。"
+	got := NormalizeDraftText(raw)
+	if got != raw {
+		t.Fatalf("got %q, want %q", got, raw)
+	}
+}
+
+func TestHumanizeDraftLineBreaks(t *testing.T) {
+	raw := "我懂你的感受。之前我們家也遇過類似狀況。後來換了無香的才比較舒服。希望你有找到適合的。"
+	got := NormalizeDraftText(raw)
+	if !containsNewline(got) {
+		t.Fatalf("expected paragraph breaks, got %q", got)
+	}
+}
+
+func TestNormalizeDraftTextShortSingleParagraph(t *testing.T) {
+	raw := "加油，會好的。"
+	got := NormalizeDraftText(raw)
+	if got != raw {
+		t.Fatalf("got %q, want %q", got, raw)
+	}
+}
+
+func containsNewline(s string) bool {
+	for i := 0; i < len(s); i++ {
+		if s[i] == '\n' {
+			return true
+		}
+	}
+	return false
+}

backend/internal/library/outreach/generate.go

@@ -24,14 +24,16 @@ type GenerateResult struct {
 }
 
 type GenerateInput struct {
-	Persona         string
-	TopicLabel      string
-	AudienceBrief   string
-	ProductBrief    string
-	PlacementReason string
-	TargetText      string
-	AuthorName      string
-	Count           int
+	Persona              string
+	TopicLabel           string
+	AudienceBrief        string
+	ProductBrief         string
+	PlacementReason      string
+	TargetText           string
+	AuthorName           string
+	Count                int
+	Regenerate           bool
+	PreviousDraftsHint   string
 }
 
 var codeFenceRE = regexp.MustCompile(`(?s)^` + "```(?:json)?\\s*(.*?)\\s*" + "```$")
@@ -65,6 +67,13 @@ func BuildUserPrompt(in GenerateInput) (string, error) {
 	if author == "" {
 		author = "匿名"
 	}
+	regenerateLine := ""
+	if in.Regenerate || strings.TrimSpace(in.PreviousDraftsHint) != "" {
+		regenerateLine = "\n【重新生成】請產出與舊版明顯不同的新草稿：換開頭、換切角、換句式與情境細節，不要複製舊文案。"
+		if hint := strings.TrimSpace(in.PreviousDraftsHint); hint != "" {
+			regenerateLine += "\n" + hint
+		}
+	}
 	return libprompt.OutreachPlacementUser(map[string]string{
 		"persona_block":         personaBlock,
 		"topic_label":           topic,
@@ -73,6 +82,7 @@ func BuildUserPrompt(in GenerateInput) (string, error) {
 		"placement_reason_line": reasonLine,
 		"author_name":           author,
 		"target_text":           strings.TrimSpace(in.TargetText),
+		"regenerate_line":       regenerateLine,
 		"count":                 fmt.Sprintf("%d", count),
 	})
 }
@@ -90,7 +100,7 @@ func ParseGenerateOutput(raw string) (GenerateResult, error) {
 		return GenerateResult{}, fmt.Errorf("outreach drafts missing")
 	}
 	for i := range out.Drafts {
-		out.Drafts[i].Text = trimDraftText(out.Drafts[i].Text)
+		out.Drafts[i].Text = NormalizeDraftText(out.Drafts[i].Text)
 		if out.Drafts[i].Text == "" {
 			return GenerateResult{}, fmt.Errorf("outreach draft %d empty", i+1)
 		}

backend/internal/library/outreach/generate_draft.go

@@ -0,0 +1,188 @@
+package outreach
+
+import (
+	"context"
+	"strings"
+
+	app "haixun-backend/internal/library/errors"
+	"haixun-backend/internal/library/errors/code"
+	libprompt "haixun-backend/internal/library/prompt"
+	domai "haixun-backend/internal/model/ai/domain/usecase"
+	aiusecase "haixun-backend/internal/model/ai/usecase"
+	branddomain "haixun-backend/internal/model/brand/domain/usecase"
+	kgdomain "haixun-backend/internal/model/knowledge_graph/domain/usecase"
+	outreachusecase "haixun-backend/internal/model/outreach_draft/domain/usecase"
+	personadomain "haixun-backend/internal/model/persona/domain/usecase"
+	scanpostentity "haixun-backend/internal/model/scan_post/domain/entity"
+	scanpostusecase "haixun-backend/internal/model/scan_post/domain/usecase"
+	threadsaccountdomain "haixun-backend/internal/model/threads_account/domain/usecase"
+)
+
+type GenerateDraftRequest struct {
+	TenantID       string
+	OwnerUID       string
+	BrandID        string
+	TopicID        string
+	ScanPostID     string
+	Count          int
+	VoicePersonaID string
+	ProductID      string
+	Regenerate     bool
+}
+
+type GenerateDraftDeps struct {
+	Brand          branddomain.UseCase
+	Persona        personadomain.UseCase
+	ScanPost       scanpostusecase.UseCase
+	KnowledgeGraph kgdomain.UseCase
+	ThreadsAccount threadsaccountdomain.UseCase
+	AI             aiusecase.UseCase
+	OutreachDraft  outreachusecase.UseCase
+}
+
+func GenerateDraft(ctx context.Context, deps GenerateDraftDeps, req GenerateDraftRequest) (*outreachusecase.DraftSummary, error) {
+	scanPostID := strings.TrimSpace(req.ScanPostID)
+	count := req.Count
+	if count <= 0 {
+		count = 2
+	}
+	if count > 4 {
+		count = 4
+	}
+	if scanPostID == "" {
+		return nil, app.For(code.Brand).InputMissingRequired("scan_post_id is required")
+	}
+
+	brand, err := deps.Brand.Get(ctx, req.TenantID, req.OwnerUID, req.BrandID)
+	if err != nil {
+		return nil, err
+	}
+	voiceID := strings.TrimSpace(req.VoicePersonaID)
+	if voiceID == "" {
+		return nil, app.For(code.Brand).InputMissingRequired("voice_persona_id is required")
+	}
+	vp, err := deps.Persona.Get(ctx, req.TenantID, req.OwnerUID, voiceID)
+	if err != nil {
+		return nil, err
+	}
+	voicePersona := FormatVoicePersonaBlock(vp)
+	if voicePersona == "" {
+		return nil, app.For(code.Persona).InputMissingRequired("請先在人設頁填寫人設描述或完成 8D 風格分析")
+	}
+	preferredProductID := strings.TrimSpace(req.ProductID)
+	if preferredProductID == "" {
+		preferredProductID = strings.TrimSpace(brand.ProductID)
+	}
+	post, err := deps.ScanPost.Get(ctx, req.TenantID, req.OwnerUID, req.BrandID, scanPostID)
+	if err != nil {
+		return nil, err
+	}
+	pickedProduct := PickProductForOutreach(brand, preferredProductID, post.SearchTag, post.Text)
+	productID := preferredProductID
+	if pickedProduct != nil {
+		productID = pickedProduct.ID
+	}
+
+	topicLabel := strings.TrimSpace(post.SearchTag)
+	placementReason := BuildPlacementReason(post)
+	if graph, graphErr := deps.KnowledgeGraph.Get(ctx, req.TenantID, req.OwnerUID, req.BrandID); graphErr == nil && graph != nil {
+		if node := FindGraphNode(graph.Nodes, post.GraphNodeID); node != nil {
+			if strings.TrimSpace(node.Label) != "" {
+				topicLabel = strings.TrimSpace(node.Label)
+			}
+			placementReason = MergePlacementReason(placementReason, node, post)
+		}
+	}
+
+	regenerate := req.Regenerate
+	previousHint := ""
+	if latest, latestErr := deps.OutreachDraft.GetLatestByScanPost(
+		ctx, req.TenantID, req.OwnerUID, req.BrandID, strings.TrimSpace(req.TopicID), scanPostID,
+	); latestErr == nil && latest != nil && len(latest.Drafts) > 0 {
+		regenerate = true
+		previousHint = FormatPreviousDraftsHint(latest)
+	}
+
+	userPrompt, err := BuildUserPrompt(GenerateInput{
+		Persona:            voicePersona,
+		TopicLabel:         topicLabel,
+		AudienceBrief:      brand.TargetAudience,
+		ProductBrief:       ProductBriefForBrand(brand, productID, post.SearchTag, post.Text),
+		PlacementReason:    placementReason,
+		TargetText:         post.Text,
+		AuthorName:         post.Author,
+		Count:              count,
+		Regenerate:         regenerate,
+		PreviousDraftsHint: previousHint,
+	})
+	if err != nil {
+		return nil, app.For(code.AI).SysInternal("outreach user prompt load failed")
+	}
+
+	systemPrompt, err := libprompt.OutreachPlacementSystem()
+	if err != nil {
+		return nil, app.For(code.AI).SysInternal("outreach system prompt load failed")
+	}
+	systemPrompt = strings.TrimSpace(systemPrompt) + "\n\n【最高優先】以下人設與語氣是硬約束，每則留言都必須像這個角色親自回覆，不得變成通用網友口吻：\n" + strings.TrimSpace(voicePersona)
+
+	credential, err := deps.ThreadsAccount.ResolveMemberAiCredential(ctx, req.TenantID, req.OwnerUID)
+	if err != nil {
+		return nil, err
+	}
+	providerID, err := aiusecase.MapWorkerProvider(credential.Provider)
+	if err != nil {
+		return nil, err
+	}
+
+	temp := 0.88
+	result, err := deps.AI.GenerateText(ctx, domai.GenerateRequest{
+		Provider: providerID,
+		Model:    credential.Model,
+		Credential: domai.Credential{
+			APIKey: credential.APIKey,
+		},
+		System: systemPrompt,
+		Messages: []domai.Message{
+			{Role: "user", Content: userPrompt},
+		},
+		Temperature: &temp,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	parsed, err := ParseGenerateOutput(result.Text)
+	if err != nil {
+		return nil, app.For(code.AI).SvcThirdParty("獲客留言 LLM 回傳無法解析：" + err.Error())
+	}
+
+	draftItems := make([]outreachusecase.DraftItem, 0, len(parsed.Drafts))
+	for _, item := range parsed.Drafts {
+		draftItems = append(draftItems, outreachusecase.DraftItem{
+			Text:      item.Text,
+			Angle:     item.Angle,
+			Rationale: item.Rationale,
+		})
+	}
+	saved, err := deps.OutreachDraft.Create(ctx, outreachusecase.CreateRequest{
+		TenantID:   req.TenantID,
+		OwnerUID:   req.OwnerUID,
+		BrandID:    req.BrandID,
+		TopicID:    strings.TrimSpace(req.TopicID),
+		ScanPostID: scanPostID,
+		Relevance:  parsed.Relevance,
+		Reason:     parsed.Reason,
+		Drafts:     draftItems,
+	})
+	if err != nil {
+		return nil, err
+	}
+	_, _ = deps.ScanPost.UpdateOutreach(ctx, scanpostusecase.UpdateOutreachRequest{
+		TenantID: req.TenantID,
+		OwnerUID: req.OwnerUID,
+		BrandID:  req.BrandID,
+		PostID:   scanPostID,
+		Status:   scanpostentity.OutreachStatusDrafted,
+	})
+	return saved, nil
+}

backend/internal/library/outreach/persona_voice.go

@@ -0,0 +1,33 @@
+package outreach
+
+import (
+	"strings"
+
+	"haixun-backend/internal/library/style8d"
+	personadomain "haixun-backend/internal/model/persona/domain/usecase"
+)
+
+// FormatVoicePersonaBlock builds the LLM persona block from a full persona profile.
+func FormatVoicePersonaBlock(vp *personadomain.PersonaSummary) string {
+	if vp == nil {
+		return ""
+	}
+	block := style8d.ResolvePersonaBlock(vp.Persona, vp.StyleProfile, vp.Brief)
+	if block == "" {
+		return ""
+	}
+	extras := make([]string, 0, 3)
+	if name := strings.TrimSpace(vp.DisplayName); name != "" {
+		extras = append(extras, "角色名稱："+name)
+	}
+	if goals := strings.TrimSpace(vp.Goals); goals != "" {
+		extras = append(extras, "回覆目標："+goals)
+	}
+	if benchmark := strings.TrimSpace(vp.StyleBenchmark); benchmark != "" {
+		extras = append(extras, "語氣參考："+benchmark)
+	}
+	if len(extras) == 0 {
+		return block
+	}
+	return strings.TrimSpace(block + "\n\n" + strings.Join(extras, "\n"))
+}

backend/internal/library/outreach/persona_voice_test.go

@@ -0,0 +1,34 @@
+package outreach
+
+import (
+	"strings"
+	"testing"
+
+	personadomain "haixun-backend/internal/model/persona/domain/usecase"
+)
+
+func TestFormatVoicePersonaBlockUsesPersonaAndGoals(t *testing.T) {
+	block := FormatVoicePersonaBlock(&personadomain.PersonaSummary{
+		DisplayName: "小安",
+		Persona:     "溫柔媽媽，說話慢一點、會先共情",
+		Goals:       "讓對方覺得被理解，再輕鬆分享經驗",
+	})
+	if !strings.Contains(block, "溫柔媽媽") {
+		t.Fatalf("expected persona text, got %q", block)
+	}
+	if !strings.Contains(block, "小安") {
+		t.Fatalf("expected display name, got %q", block)
+	}
+	if !strings.Contains(block, "讓對方覺得被理解") {
+		t.Fatalf("expected goals, got %q", block)
+	}
+}
+
+func TestFormatVoicePersonaBlockEmpty(t *testing.T) {
+	if FormatVoicePersonaBlock(nil) != "" {
+		t.Fatal("expected empty block for nil persona")
+	}
+	if FormatVoicePersonaBlock(&personadomain.PersonaSummary{}) != "" {
+		t.Fatal("expected empty block for blank persona")
+	}
+}

backend/internal/library/outreach/previous_drafts.go

@@ -0,0 +1,32 @@
+package outreach
+
+import (
+	"fmt"
+	"strings"
+
+	outreachusecase "haixun-backend/internal/model/outreach_draft/domain/usecase"
+)
+
+func FormatPreviousDraftsHint(latest *outreachusecase.DraftSummary) string {
+	if latest == nil || len(latest.Drafts) == 0 {
+		return ""
+	}
+	lines := []string{"上一版草稿（請避開相同寫法）："}
+	for i, item := range latest.Drafts {
+		angle := strings.TrimSpace(item.Angle)
+		if angle == "" {
+			angle = fmt.Sprintf("版本%d", i+1)
+		}
+		lines = append(lines, fmt.Sprintf("- %s：%s", angle, truncateRunes(item.Text, 140)))
+	}
+	return strings.Join(lines, "\n")
+}
+
+func truncateRunes(text string, max int) string {
+	text = strings.TrimSpace(text)
+	runes := []rune(text)
+	if len(runes) <= max {
+		return text
+	}
+	return string(runes[:max]) + "…"
+}

backend/internal/library/outreach/previous_drafts_test.go

@@ -0,0 +1,19 @@
+package outreach
+
+import (
+	"strings"
+	"testing"
+
+	outreachusecase "haixun-backend/internal/model/outreach_draft/domain/usecase"
+)
+
+func TestFormatPreviousDraftsHint(t *testing.T) {
+	hint := FormatPreviousDraftsHint(&outreachusecase.DraftSummary{
+		Drafts: []outreachusecase.DraftItem{
+			{Angle: "共情", Text: "我懂你的感受"},
+		},
+	})
+	if !strings.Contains(hint, "上一版草稿") || !strings.Contains(hint, "共情") {
+		t.Fatalf("hint = %q", hint)
+	}
+}

backend/internal/library/ownpost/post_formula.go

@@ -0,0 +1,162 @@
+package ownpost
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"regexp"
+	"strings"
+
+	domai "haixun-backend/internal/model/ai/domain/usecase"
+)
+
+var formulaFenceRE = regexp.MustCompile("(?s)```(?:json)?\\s*([\\s\\S]*?)```")
+
+type PostFormulaInput struct {
+	AccountName  string
+	PersonaBlock string
+	PostText     string
+	TopicTag     string
+	MediaType    string
+	LikeCount    int
+	ReplyCount   int
+	Views        int
+	RepostCount  int
+	QuoteCount   int
+	Shares       int
+	Timestamp    string
+}
+
+type PostFormulaReview struct {
+	Summary         string   `json:"summary"`
+	Wins            []string `json:"wins"`
+	Improvements    []string `json:"improvements"`
+	Formula         string   `json:"formula"`
+	PostTemplate    string   `json:"post_template"`
+	HookPattern     string   `json:"hook_pattern"`
+	Structure       string   `json:"structure"`
+	ReplicationTips []string `json:"replication_tips"`
+	Avoid           []string `json:"avoid"`
+}
+
+func BuildPostFormulaPrompt(in PostFormulaInput) (system string, user string) {
+	personaBlock := strings.TrimSpace(in.PersonaBlock)
+	if personaBlock == "" {
+		personaBlock = "（未指定人設，請依貼文本身語氣分析）"
+	}
+	postText := strings.TrimSpace(in.PostText)
+	if postText == "" {
+		postText = "（貼文內容未提供）"
+	}
+
+	system = strings.TrimSpace(`
+你是 Threads 內容策略教練。任務是針對「已發布的單篇貼文」做誠實覆盤：好的要提炼成可複製公式，壞的要指出問題並給具體改善做法。不要重寫整篇貼文。
+
+規則：
+- 用台灣繁體中文。
+- 必須同時寫優點與缺點；依成效數據判斷，成效普通或偏差時更要直言問題。
+- 分析要具體、可執行，禁止空泛稱讚或空泛批評。
+- formula：把「做對的部分」整理成步驟化公式（例：Hook→情境→轉折→觀點→收尾/互動）。
+- post_template：依 formula 產出可複製的發文骨架，用 [括號] 標示可替換欄位，讓使用者下次填空就能產文。
+- improvements：每點格式固定為「問題：…｜改善：…」，改善必須是可立刻執行的動作（改哪一句、加什麼、刪什麼、換什麼角度）。
+- 只輸出一個 JSON 物件，不要 markdown，欄位：
+  summary, wins, improvements, formula, post_template, hook_pattern, structure, replication_tips, avoid
+- wins / improvements / replication_tips / avoid 各 2～5 點字串陣列。`)
+
+	var b strings.Builder
+	b.WriteString("【1. 人設】\n")
+	b.WriteString(personaBlock)
+	b.WriteString("\n\n帳號：")
+	b.WriteString(strings.TrimSpace(in.AccountName))
+	b.WriteString("\n\n【2. 貼文內容】\n")
+	b.WriteString(postText)
+	if tag := strings.TrimSpace(in.TopicTag); tag != "" {
+		b.WriteString("\n話題標籤：#")
+		b.WriteString(tag)
+	}
+	if mt := strings.TrimSpace(in.MediaType); mt != "" {
+		b.WriteString("\n媒體類型：")
+		b.WriteString(mt)
+	}
+	if ts := strings.TrimSpace(in.Timestamp); ts != "" {
+		b.WriteString("\n發布時間：")
+		b.WriteString(ts)
+	}
+	b.WriteString("\n\n【3. 成效數據】\n")
+	b.WriteString(fmt.Sprintf("讚 %d｜回覆 %d｜瀏覽 %d｜轉發 %d｜引用 %d｜分享 %d",
+		in.LikeCount, in.ReplyCount, in.Views, in.RepostCount, in.QuoteCount, in.Shares))
+	b.WriteString("\n\n請誠實覆盤：做對了什麼、哪裡不好、怎麼改，並把做對的部分整理成下次可複製的公式與發文模板 JSON。")
+	user = b.String()
+	return system, user
+}
+
+func GeneratePostFormula(ctx context.Context, ai domai.UseCase, req domai.GenerateRequest, in PostFormulaInput) (*PostFormulaReview, error) {
+	system, user := BuildPostFormulaPrompt(in)
+	temp := 0.65
+	req.System = system
+	req.Messages = []domai.Message{{Role: "user", Content: user}}
+	req.Temperature = &temp
+	out, err := ai.GenerateText(ctx, req)
+	if err != nil {
+		return nil, err
+	}
+	review, err := ParsePostFormulaOutput(out.Text)
+	if err != nil {
+		return nil, err
+	}
+	return review, nil
+}
+
+func ParsePostFormulaOutput(raw string) (*PostFormulaReview, error) {
+	payload, err := extractFormulaJSONObject(raw)
+	if err != nil {
+		return nil, err
+	}
+	var review PostFormulaReview
+	if err := json.Unmarshal(payload, &review); err != nil {
+		return nil, fmt.Errorf("parse post formula json: %w", err)
+	}
+	review.Summary = strings.TrimSpace(review.Summary)
+	review.Formula = strings.TrimSpace(review.Formula)
+	review.PostTemplate = strings.TrimSpace(review.PostTemplate)
+	review.HookPattern = strings.TrimSpace(review.HookPattern)
+	review.Structure = strings.TrimSpace(review.Structure)
+	review.Wins = trimStringList(review.Wins)
+	review.Improvements = trimStringList(review.Improvements)
+	review.ReplicationTips = trimStringList(review.ReplicationTips)
+	review.Avoid = trimStringList(review.Avoid)
+	if review.Summary == "" && review.Formula == "" && review.PostTemplate == "" {
+		return nil, fmt.Errorf("AI 未回傳有效覆盤內容")
+	}
+	return &review, nil
+}
+
+func trimStringList(items []string) []string {
+	if len(items) == 0 {
+		return nil
+	}
+	out := make([]string, 0, len(items))
+	for _, item := range items {
+		item = strings.TrimSpace(item)
+		if item != "" {
+			out = append(out, item)
+		}
+	}
+	if len(out) == 0 {
+		return nil
+	}
+	return out
+}
+
+func extractFormulaJSONObject(raw string) ([]byte, error) {
+	raw = strings.TrimSpace(raw)
+	if m := formulaFenceRE.FindStringSubmatch(raw); len(m) == 2 {
+		raw = strings.TrimSpace(m[1])
+	}
+	start := strings.Index(raw, "{")
+	end := strings.LastIndex(raw, "}")
+	if start < 0 || end <= start {
+		return nil, fmt.Errorf("formula output missing json object")
+	}
+	return []byte(raw[start : end+1]), nil
+}

backend/internal/library/ownpost/post_formula_test.go

@@ -0,0 +1,34 @@
+package ownpost
+
+import "testing"
+
+func TestParsePostFormulaOutputIncludesImprovementsAndTemplate(t *testing.T) {
+	raw := `{
+  "summary": "整體互動偏低，但開場有吸引力。",
+  "wins": ["開場直接點痛點"],
+  "improvements": ["問題：收尾沒有問句｜改善：最後加一句開放式提問引導留言"],
+  "formula": "Hook→情境→觀點→互動問句",
+  "post_template": "[痛點一句]\n[親身情境]\n[你的觀點]\n[問句收尾]",
+  "hook_pattern": "先丟痛點再現身說法",
+  "structure": "4 段，每段 1-2 句",
+  "replication_tips": ["下次同主題先寫 Hook 再補故事"],
+  "avoid": ["不要一次講太多資訊"]
+}`
+	review, err := ParsePostFormulaOutput(raw)
+	if err != nil {
+		t.Fatalf("parse: %v", err)
+	}
+	if len(review.Improvements) != 1 {
+		t.Fatalf("improvements: got %d", len(review.Improvements))
+	}
+	if review.PostTemplate == "" {
+		t.Fatal("expected post_template")
+	}
+}
+
+func TestTrimStringListDropsEmpty(t *testing.T) {
+	got := trimStringList([]string{" a ", "", "b"})
+	if len(got) != 2 || got[0] != "a" || got[1] != "b" {
+		t.Fatalf("unexpected: %#v", got)
+	}
+}

backend/internal/library/ownpost/reply_draft.go

@@ -0,0 +1,226 @@
+package ownpost
+
+import (
+	"context"
+	"fmt"
+	"regexp"
+	"strings"
+	"unicode/utf8"
+
+	domai "haixun-backend/internal/model/ai/domain/usecase"
+)
+
+type ReplyDraftInput struct {
+	AccountName      string
+	PersonaBlock     string
+	PostText         string
+	ReplyText        string
+	ReplyToID        string
+	ThreadPostText   string
+	ParentReplyText  string
+}
+
+var (
+	wrapQuoteRE    = regexp.MustCompile(`^["'「『](.*)["'」』]$`)
+	multiBlankRE   = regexp.MustCompile(`\n{3,}`)
+	sentenceEndRE  = regexp.MustCompile(`([。！？…!?])\s*`)
+	aiPhraseRE     = regexp.MustCompile(`(?i)(很高興|感謝您的|希望這對您|作為一個|總而言之|綜上所述|不妨考慮|值得注意)`)
+)
+
+func isMentionReplyDraft(in ReplyDraftInput) bool {
+	return strings.TrimSpace(in.ThreadPostText) != "" || strings.TrimSpace(in.ParentReplyText) != ""
+}
+
+func BuildReplyDraftPrompt(in ReplyDraftInput) (system string, user string) {
+	if isMentionReplyDraft(in) {
+		return buildMentionReplyDraftPrompt(in)
+	}
+	accountName := strings.TrimSpace(in.AccountName)
+	if accountName == "" {
+		accountName = "我"
+	}
+	postText := strings.TrimSpace(in.PostText)
+	if postText == "" {
+		postText = "（貼文內容未提供）"
+	}
+	replyText := strings.TrimSpace(in.ReplyText)
+	replyToID := strings.TrimSpace(in.ReplyToID)
+	personaBlock := strings.TrimSpace(in.PersonaBlock)
+	if personaBlock == "" {
+		personaBlock = "（尚未設定人設，請用口語、像真人在 Threads 回留言）"
+	}
+
+	system = strings.TrimSpace(`
+你是 Threads 貼文作者本人，要在自己貼文底下回留言或接續串文。
+請用台灣繁體中文，像真人用手機打字，完全不像 AI 或客服。
+
+硬規則：
+1. 人設語氣是最高優先：用字、節奏、距離感、價值觀必須符合【1. 人設】，不得變成通用網友或官方口吻。
+2. 只輸出一則回覆正文：不要標題、不要 JSON、不要用引號包裹、不要解釋你怎麼寫。
+3. 先讀【2. 我的貼文】掌握語境；若有【3. 要回覆的留言】，要直接回應對方說的內容，不要自說自話。
+4. 禁止 AI 腔：不要「很高興／感謝您的／希望這對您有幫助／作為一個…／總而言之／綜上所述」這類句型。
+5. 禁止客服業配腔：不要硬推、不要條列式教學、不要一次講太多重點。
+6. 排版要像真人留言：2～4 個短段落，每段 1～2 句；段落之間必須換行（用實際換行，不要整段擠在一起）。
+7. 可口語、可省略主詞、可用 …、可 0～1 個 emoji；總長度約 40～180 字，最多不超過 280 字。
+8. 你是貼文作者本人在回，不要假裝是粉絲或路人。`)
+
+	var b strings.Builder
+	b.WriteString("【1. 人設】\n")
+	b.WriteString(personaBlock)
+	b.WriteString("\n\n帳號名稱：")
+	b.WriteString(accountName)
+	b.WriteString("\n\n【2. 我的貼文】\n")
+	b.WriteString(postText)
+	b.WriteString("\n\n【3. 要回覆的留言】\n")
+	if replyToID != "" && replyText != "" {
+		b.WriteString(replyText)
+		b.WriteString("\n\n請依人設語氣，回覆這則留言。")
+	} else {
+		b.WriteString("（無特定留言，這是接續自己貼文的補充回覆／串文）")
+		b.WriteString("\n\n請依人設語氣，寫一則自然接續這篇貼文的留言。")
+	}
+	user = b.String()
+	return system, user
+}
+
+func buildMentionReplyDraftPrompt(in ReplyDraftInput) (system string, user string) {
+	accountName := strings.TrimSpace(in.AccountName)
+	if accountName == "" {
+		accountName = "我"
+	}
+	threadText := strings.TrimSpace(in.ThreadPostText)
+	if threadText == "" {
+		threadText = strings.TrimSpace(in.PostText)
+	}
+	if threadText == "" {
+		threadText = "（主串貼文內容未提供）"
+	}
+	parentText := strings.TrimSpace(in.ParentReplyText)
+	mentionText := strings.TrimSpace(in.ReplyText)
+	if mentionText == "" {
+		mentionText = "（對方 @ 你的內容未提供）"
+	}
+	personaBlock := strings.TrimSpace(in.PersonaBlock)
+	if personaBlock == "" {
+		personaBlock = "（尚未設定人設，請用口語、像真人在 Threads 回留言）"
+	}
+
+	system = strings.TrimSpace(`
+你是 Threads 帳號本人，有人在你參與的串文裡 @ 你，你要回覆對方。
+請用台灣繁體中文，像真人用手機打字，完全不像 AI 或客服。
+
+硬規則：
+1. 人設語氣是最高優先：用字、節奏、距離感必須符合【1. 人設】。
+2. 先讀【2. 主串貼文】理解整串在講什麼；若有【3. 上層留言】，要知道留言脈絡。
+3. 你的回覆必須直接回應【4. 對方 @ 你的內容】，不要忽略對方 tag 你的那句話。
+4. 只輸出一則回覆正文：不要標題、不要 JSON、不要用引號包裹、不要解釋你怎麼寫。
+5. 禁止 AI 腔與客服腔；2～4 個短段落，段落間換行；約 40～180 字，最多 280 字。
+6. 你是被 @ 的當事人在回，語氣自然、有來有往。`)
+
+	var b strings.Builder
+	b.WriteString("【1. 人設】\n")
+	b.WriteString(personaBlock)
+	b.WriteString("\n\n帳號名稱：")
+	b.WriteString(accountName)
+	b.WriteString("\n\n【2. 主串貼文】\n")
+	b.WriteString(threadText)
+	if parentText != "" {
+		b.WriteString("\n\n【3. 上層留言】\n")
+		b.WriteString(parentText)
+	}
+	b.WriteString("\n\n【4. 對方 @ 你的內容】\n")
+	b.WriteString(mentionText)
+	b.WriteString("\n\n請依人設語氣，回覆對方 @ 你的這則內容。")
+	return system, b.String()
+}
+
+func GenerateReplyDraft(ctx context.Context, ai domai.UseCase, req domai.GenerateRequest, in ReplyDraftInput) (string, error) {
+	system, user := BuildReplyDraftPrompt(in)
+	temp := 0.9
+	req.System = system
+	req.Messages = []domai.Message{{Role: "user", Content: user}}
+	req.Temperature = &temp
+	out, err := ai.GenerateText(ctx, req)
+	if err != nil {
+		return "", err
+	}
+	text := NormalizeHumanReply(out.Text)
+	if text == "" {
+		return "", fmt.Errorf("AI 未回傳回覆草稿")
+	}
+	return text, nil
+}
+
+// NormalizeHumanReply trims AI artifacts and nudges layout toward short mobile-style paragraphs.
+func NormalizeHumanReply(raw string) string {
+	text := strings.TrimSpace(raw)
+	if text == "" {
+		return ""
+	}
+	if m := wrapQuoteRE.FindStringSubmatch(text); len(m) == 2 {
+		text = strings.TrimSpace(m[1])
+	}
+	text = strings.ReplaceAll(text, `\n`, "\n")
+	text = multiBlankRE.ReplaceAllString(text, "\n\n")
+	text = strings.TrimSpace(text)
+
+	if !strings.Contains(text, "\n") {
+		if sentenceCount(text) >= 2 || utf8.RuneCountInString(text) > 72 {
+			text = breakLongReply(text)
+		}
+	}
+	if aiPhraseRE.MatchString(text) && !strings.Contains(text, "\n") {
+		text = breakLongReply(text)
+	}
+	return strings.TrimSpace(text)
+}
+
+func sentenceCount(text string) int {
+	n := 0
+	for _, r := range text {
+		switch r {
+		case '。', '！', '？', '…', '!', '?':
+			n++
+		}
+	}
+	return n
+}
+
+func breakLongReply(text string) string {
+	parts := sentenceEndRE.Split(text, -1)
+	seps := sentenceEndRE.FindAllString(text, -1)
+	if len(parts) <= 1 {
+		return text
+	}
+	var chunks []string
+	var current strings.Builder
+	for i, part := range parts {
+		part = strings.TrimSpace(part)
+		if part == "" {
+			continue
+		}
+		sep := ""
+		if i < len(seps) {
+			sep = strings.TrimSpace(seps[i])
+		}
+		segment := part + sep
+		if current.Len() == 0 {
+			current.WriteString(segment)
+			continue
+		}
+		if utf8.RuneCountInString(current.String())+utf8.RuneCountInString(segment) > 42 {
+			chunks = append(chunks, strings.TrimSpace(current.String()))
+			current.Reset()
+			current.WriteString(segment)
+			continue
+		}
+		current.WriteString(segment)
+	}
+	if current.Len() > 0 {
+		chunks = append(chunks, strings.TrimSpace(current.String()))
+	}
+	if len(chunks) <= 1 {
+		return text
+	}
+	return strings.Join(chunks, "\n")
+}

backend/internal/library/ownpost/reply_draft_test.go

@@ -0,0 +1,66 @@
+package ownpost
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestBuildReplyDraftPromptIncludesPersonaPostAndReply(t *testing.T) {
+	_, user := BuildReplyDraftPrompt(ReplyDraftInput{
+		AccountName:  "小安",
+		PersonaBlock: "溫柔媽媽，說話慢、會先共情",
+		PostText:     "今天帶小孩好累",
+		ReplyText:    "我也是欸",
+		ReplyToID:    "123",
+	})
+	for _, want := range []string{"【1. 人設】", "溫柔媽媽", "【2. 我的貼文】", "今天帶小孩好累", "【3. 要回覆的留言】", "我也是欸"} {
+		if !strings.Contains(user, want) {
+			t.Fatalf("missing %q in user prompt:\n%s", want, user)
+		}
+	}
+}
+
+func TestBuildReplyDraftPromptThreadContinuation(t *testing.T) {
+	_, user := BuildReplyDraftPrompt(ReplyDraftInput{
+		PersonaBlock: "生活觀察者",
+		PostText:     "最近在想轉職",
+	})
+	if !strings.Contains(user, "接續自己貼文") {
+		t.Fatalf("expected thread continuation hint, got:\n%s", user)
+	}
+	if strings.Contains(user, "【3. 要回覆的留言】\n（無特定留言") {
+		// ok
+	} else if !strings.Contains(user, "無特定留言") {
+		t.Fatalf("expected empty reply section marker, got:\n%s", user)
+	}
+}
+
+func TestBuildMentionReplyDraftPromptIncludesThreadAndMention(t *testing.T) {
+	_, user := BuildReplyDraftPrompt(ReplyDraftInput{
+		AccountName:     "小安",
+		PersonaBlock:    "直率科技人",
+		ThreadPostText:  "今天來分享育兒心得",
+		ParentReplyText: "我覺得放鬆最重要",
+		ReplyText:       "@小安 你覺得呢？",
+		ReplyToID:       "999",
+	})
+	for _, want := range []string{
+		"【2. 主串貼文】", "今天來分享育兒心得",
+		"【3. 上層留言】", "我覺得放鬆最重要",
+		"【4. 對方 @ 你的內容】", "@小安 你覺得呢？",
+	} {
+		if !strings.Contains(user, want) {
+			t.Fatalf("missing %q in mention user prompt:\n%s", want, user)
+		}
+	}
+}
+
+func TestNormalizeHumanReplyStripsQuotesAndBreaksLines(t *testing.T) {
+	got := NormalizeHumanReply(`"第一段真的超累到不想講話。第二段後來洗個澡就還好一點。第三段你加油，我們一起撐過這週。"`)
+	if strings.HasPrefix(got, `"`) {
+		t.Fatalf("expected quotes stripped, got %q", got)
+	}
+	if !strings.Contains(got, "\n") {
+		t.Fatalf("expected line breaks, got %q", got)
+	}
+}

backend/internal/library/placement/capabilities.go

@@ -46,8 +46,5 @@ func publishCapabilityHint(member MemberContext) string {
 	if strings.TrimSpace(member.ActiveAccountID) == "" {
 		return "請先建立並選定經營帳號"
 	}
-	if member.DevMode && !member.AllowsThreadsAPI {
-		return "開發模式請在連線設定啟用 API 發文"
-	}
 	return "請先完成 Threads API 連線後再發布貼文"
 }

backend/internal/library/placement/context.go

@@ -101,6 +101,27 @@ func BuildMemberContext(
 	}
 }
 
+// MemberContextForAPIOnly forces Threads / web-search discover and disables Playwright routing.
+// Used for all flows except explicit test-patrol jobs.
+func MemberContextForAPIOnly(base MemberContext) MemberContext {
+	base.DevMode = false
+	base.SearchSourceMode = WithoutCrawler(base.SearchSourceMode)
+	base.AllowsCrawler = false
+	base.AllowsThreadsAPI = ModeAllowsThreadsAPI(base.SearchSourceMode)
+	base.AllowsBrave = ModeAllowsBrave(base.SearchSourceMode)
+	return base
+}
+
+// MemberContextForCrawlerOnly forces Playwright-only discover for test patrol jobs.
+func MemberContextForCrawlerOnly(base MemberContext) MemberContext {
+	base.DevMode = true
+	base.SearchSourceMode = SearchSourceCrawler
+	base.AllowsCrawler = true
+	base.AllowsBrave = false
+	base.AllowsThreadsAPI = false
+	return base
+}
+
 func (c MemberContext) PayloadFields() map[string]any {
 	return map[string]any{
 		"tenant_id":           c.TenantID,

backend/internal/library/placement/context_api_only_test.go

@@ -0,0 +1,33 @@
+package placement
+
+import "testing"
+
+func TestMemberContextForAPIOnlyDisablesCrawler(t *testing.T) {
+	base := BuildMemberContext(
+		"t", "u", "acc",
+		ConnectionPrefsInput{SearchSourceMode: string(SearchSourceMixed)},
+		true, true, ResearchSettings{}, false, 10,
+	)
+	apiOnly := MemberContextForAPIOnly(base)
+	if apiOnly.AllowsCrawler {
+		t.Fatal("API-only context must not allow crawler")
+	}
+	if apiOnly.DevMode {
+		t.Fatal("API-only context must not be dev mode")
+	}
+	if !apiOnly.AllowsThreadsAPI {
+		t.Fatal("API-only context should keep Threads API")
+	}
+}
+
+func TestMemberContextForCrawlerOnlyStillWorks(t *testing.T) {
+	base := MemberContextForAPIOnly(BuildMemberContext(
+		"t", "u", "acc",
+		ConnectionPrefsInput{SearchSourceMode: string(SearchSourceMixed)},
+		true, true, ResearchSettings{}, false, 10,
+	))
+	crawler := MemberContextForCrawlerOnly(base)
+	if !crawler.AllowsCrawler || crawler.SearchSourceMode != SearchSourceCrawler {
+		t.Fatal("test patrol should force crawler-only routing")
+	}
+}

backend/internal/library/placement/discover.go

@@ -49,13 +49,13 @@ func Discover(ctx context.Context, req DiscoverRequest) ([]DiscoverPost, Discove
 	if ShouldTryCrawlerFirst(m) {
 		posts, err := runCrawlerDiscover(ctx, req)
 		if err == nil && len(posts) > 0 {
-			return posts, DiscoverCrawler, nil
+			return maybeEnrichDiscoverPosts(ctx, m, posts), DiscoverCrawler, nil
 		}
 		if m.SearchSourceMode == SearchSourceCrawler {
 			if err != nil {
 				return nil, DiscoverCrawler, err
 			}
-			return posts, DiscoverCrawler, nil
+			return maybeEnrichDiscoverPosts(ctx, m, posts), DiscoverCrawler, nil
 		}
 	}
 
@@ -73,7 +73,7 @@ func Discover(ctx context.Context, req DiscoverRequest) ([]DiscoverPost, Discove
 				if m.CrawlerFallbackAllowed() {
 					cPosts, cErr := runCrawlerDiscover(ctx, req)
 					if cErr == nil && len(cPosts) > 0 {
-						return cPosts, DiscoverCrawler, nil
+						return maybeEnrichDiscoverPosts(ctx, m, cPosts), DiscoverCrawler, nil
 					}
 				}
 				if !m.AllowsBrave && !m.CrawlerFallbackAllowed() {
@@ -89,7 +89,7 @@ func Discover(ctx context.Context, req DiscoverRequest) ([]DiscoverPost, Discove
 			if m.CrawlerFallbackAllowed() {
 				posts, err := runCrawlerDiscover(ctx, req)
 				if err == nil {
-					return posts, DiscoverCrawler, nil
+					return maybeEnrichDiscoverPosts(ctx, m, posts), DiscoverCrawler, nil
 				}
 			}
 			return nil, "", fmt.Errorf("請在設定頁設定 %s Search API key（跟隨此登入帳號）", m.WebSearchProviderLabel())
@@ -102,8 +102,15 @@ func Discover(ctx context.Context, req DiscoverRequest) ([]DiscoverPost, Discove
 		if err != nil {
 			return nil, DiscoverCrawler, err
 		}
-		return posts, DiscoverCrawler, nil
+		return maybeEnrichDiscoverPosts(ctx, m, posts), DiscoverCrawler, nil
 	}
 
 	return nil, "", fmt.Errorf("目前搜尋來源模式無可用管道：%s", m.SearchSourceMode)
 }
+
+func maybeEnrichDiscoverPosts(ctx context.Context, m MemberContext, posts []DiscoverPost) []DiscoverPost {
+	if !m.ApiConnected {
+		return posts
+	}
+	return EnrichDiscoverPostsMediaIDs(ctx, m.ThreadsAPIAccessToken, posts)
+}

backend/internal/library/placement/discover_for_query_test.go

@@ -0,0 +1,69 @@
+package placement
+
+import (
+	"context"
+	"testing"
+
+	libkg "haixun-backend/internal/library/knowledge"
+	"haixun-backend/internal/library/websearch"
+)
+
+type stubWebSearch struct {
+	enabled bool
+	posts   []DiscoverPost
+}
+
+func (s stubWebSearch) Search(ctx context.Context, opts websearch.SearchOptions) (websearch.SearchResponse, error) {
+	_ = ctx
+	_ = opts
+	results := make([]websearch.SearchResult, 0, len(s.posts))
+	for _, post := range s.posts {
+		results = append(results, websearch.SearchResult{
+			Title:   post.Text,
+			URL:     post.Permalink,
+			Snippet: "",
+		})
+	}
+	return websearch.SearchResponse{Status: "success", Results: results, Provider: websearch.ProviderBrave}, nil
+}
+
+func (s stubWebSearch) Enabled() bool              { return s.enabled }
+func (s stubWebSearch) Provider() websearch.Provider { return websearch.ProviderBrave }
+
+func TestDiscoverForQueryMergesWebSearchWhenBraveEnabled(t *testing.T) {
+	input := DualTrackInput{
+		Member: MemberContext{
+			AllowsBrave:       true,
+			AllowsThreadsAPI:  false,
+			SearchSourceMode:  SearchSourceBrave,
+			WebSearchProvider: string(websearch.ProviderBrave),
+			BraveAPIKey:       "test-key",
+		},
+		WebSearch: stubWebSearch{
+			enabled: true,
+			posts: []DiscoverPost{{
+				Text:      "最近洗衣精有推薦嗎？皮膚會癢",
+				Permalink: "https://www.threads.net/@user1/post/abc123",
+			}},
+		},
+		PatrolContext: PostScanContextFromPatrolInput(libkg.PatrolTagInput{
+			ProductName: "天然洗衣精",
+			MatchTags:   []string{"洗衣精"},
+		}, nil),
+	}
+	tq := TagQuery{
+		Tag:       "洗衣精 推薦",
+		Query:     `site:threads.net 洗衣精 推薦`,
+		Dimension: QueryRelevance,
+	}
+	posts, channel, err := discoverForQuery(context.Background(), input, tq, 5)
+	if err != nil {
+		t.Fatalf("discoverForQuery error: %v", err)
+	}
+	if len(posts) == 0 {
+		t.Fatal("expected web search posts to be merged")
+	}
+	if channel != DiscoverBrave {
+		t.Fatalf("expected brave channel, got %s", channel)
+	}
+}

backend/internal/library/placement/dual_track.go

@@ -24,6 +24,7 @@ type ScanCandidate struct {
 	Text                 string
 	SearchTag            string
 	QueryDimension       QueryDimension
+	RecencyDays          int
 	GraphNodeID          string
 	ProductFitScore      int
 	Source               DiscoverChannel
@@ -50,6 +51,7 @@ type DualTrackInput struct {
 	Nodes          []libkg.Node
 	PatrolKeywords []string
 	Exclusions     []string
+	PatrolContext  PostScanContext
 	Member         MemberContext
 	WebSearch      websearch.Client
 	Crawler        CrawlerSearchFn
@@ -104,17 +106,6 @@ func CollectTagQueries(nodes []libkg.Node, provider websearch.Provider) []TagQue
 					RecencyDays:     IdealMaxPostAgeDays,
 				})
 			}
-			q30 := BuildRecencyQuery(provider, tag, MaxPostAgeDays)
-			if q30 != "" && q30 != q7 {
-				out = append(out, TagQuery{
-					Tag:             tag,
-					Query:           q30,
-					Dimension:       QueryRecency,
-					GraphNodeID:     node.ID,
-					ProductFitScore: fit,
-					RecencyDays:     MaxPostAgeDays,
-				})
-			}
 		}
 	}
 	return out
@@ -122,7 +113,12 @@ func CollectTagQueries(nodes []libkg.Node, provider websearch.Provider) []TagQue
 
 // RunDualTrackDiscover executes relevance + recency queries and merges by permalink.
 func RunDualTrackDiscover(ctx context.Context, input DualTrackInput, onProgress DualTrackProgress) ([]ScanCandidate, error) {
-	queries := ResolveTagQueries(input.Nodes, input.PatrolKeywords, input.Member.WebSearchProviderEnum())
+	queries := ResolveTagQueries(
+		input.Nodes,
+		input.PatrolKeywords,
+		input.Member.WebSearchProviderEnum(),
+		PatrolTagInputFromScanContext(input.PatrolContext),
+	)
 	if len(queries) == 0 {
 		if len(input.PatrolKeywords) > 0 {
 			return nil, fmt.Errorf("海巡關鍵字格式無效，請改用 2～8 字的真人搜尋短句")
@@ -145,15 +141,31 @@ func RunDualTrackDiscover(ctx context.Context, input DualTrackInput, onProgress
 	runQuery := func(tq TagQuery, limit int) error {
 		posts, channel, err := discoverForQuery(ctx, input, tq, limit)
 		if err != nil {
-			return err
+			if onProgress != nil {
+				onProgress(fmt.Sprintf("略過「%s」：%s", tq.Tag, err.Error()), -1)
+			}
+			return nil
+		}
+		if len(posts) == 0 {
+			return nil
 		}
 		for _, post := range posts {
 			if MatchesExclusion(post.Text, input.Exclusions) {
 				continue
 			}
-			if !PassesPlacementFilter(post.Text) {
+			if LooksLikeCasualChat(post.Text) {
 				continue
 			}
+			postedAt := strings.TrimSpace(post.PostedAt)
+			if !PassesDiscoverFilters(post.Text, tq.Tag, postedAt, tq.Dimension, tq.ProductFitScore, tq.RecencyDays, input.PatrolContext) {
+				continue
+			}
+			bodyFit := ScorePostBodyProductFit(post.Text, input.PatrolContext)
+			semanticScore := LocalIntentScore(post.Text, input.PatrolContext)
+			effectiveFit := bodyFit
+			if tq.ProductFitScore > 0 && bodyFit > 0 {
+				effectiveFit = (tq.ProductFitScore + bodyFit*2) / 3
+			}
 			key := post.Permalink
 			if key == "" {
 				continue
@@ -170,6 +182,7 @@ func RunDualTrackDiscover(ctx context.Context, input DualTrackInput, onProgress
 						extID = parsed.ExternalID
 					}
 				}
+				semP := &semanticScore
 				merged[key] = &ScanCandidate{
 					Permalink:       post.Permalink,
 					ExternalID:      extID,
@@ -179,17 +192,19 @@ func RunDualTrackDiscover(ctx context.Context, input DualTrackInput, onProgress
 					Text:            post.Text,
 					SearchTag:       tq.Tag,
 					QueryDimension:  tq.Dimension,
+					RecencyDays:     recencyDaysForCandidate(tq),
 					GraphNodeID:     tq.GraphNodeID,
-					ProductFitScore: tq.ProductFitScore,
+					ProductFitScore: effectiveFit,
 					Source:          channel,
 					HasRelevance:    tq.Dimension == QueryRelevance,
 					HasRecency:      tq.Dimension == QueryRecency,
 					Priority:        priority,
 					LikeCount:       post.LikeCount,
 					ReplyCount:      post.ReplyCount,
-					PlacementScore:  computePlacementScore(post.Text, tq.ProductFitScore, tq.Dimension == QueryRecency, nil, nil, nil),
-					SolvedByProduct: tq.ProductFitScore >= 55,
-					PostedAt:        strings.TrimSpace(post.PostedAt),
+					SemanticScore:   semanticScore,
+					PlacementScore:  computePlacementScore(post.Text, effectiveFit, tq.Dimension == QueryRecency, nil, semP, nil),
+					SolvedByProduct: PostSolvedByProduct(post.Text, effectiveFit, input.PatrolContext),
+					PostedAt:        postedAt,
 				}
 				order = append(order, key)
 				continue
@@ -199,14 +214,27 @@ func RunDualTrackDiscover(ctx context.Context, input DualTrackInput, onProgress
 			}
 			if tq.Dimension == QueryRecency {
 				existing.HasRecency = true
+				existing.RecencyDays = mergeRecencyDays(existing.RecencyDays, tq.RecencyDays)
 			}
-			if tq.ProductFitScore > existing.ProductFitScore {
-				existing.ProductFitScore = tq.ProductFitScore
-				existing.SolvedByProduct = tq.ProductFitScore >= 55
+			if effectiveFit > existing.ProductFitScore || semanticScore > existing.SemanticScore {
+				if effectiveFit > existing.ProductFitScore {
+					existing.ProductFitScore = effectiveFit
+				}
+				if semanticScore > existing.SemanticScore {
+					existing.SemanticScore = semanticScore
+				}
+				existing.SolvedByProduct = PostSolvedByProduct(existing.Text, existing.ProductFitScore, input.PatrolContext)
+				semP := existing.SemanticScore
+				semPtr := &semP
+				if semP <= 0 {
+					semPtr = nil
+				}
+				existing.PlacementScore = computePlacementScore(existing.Text, existing.ProductFitScore, existing.HasRecency, nil, semPtr, nil)
 			}
 			if strings.TrimSpace(existing.PostedAt) == "" && strings.TrimSpace(post.PostedAt) != "" {
 				existing.PostedAt = strings.TrimSpace(post.PostedAt)
 			}
+			existing.ExternalID = PreferReplyExternalID(existing.ExternalID, post.ExternalID)
 		}
 		return nil
 	}
@@ -217,15 +245,12 @@ func RunDualTrackDiscover(ctx context.Context, input DualTrackInput, onProgress
 			pct := 10 + ((i + 1) * 75 / max(total, 1))
 			onProgress(fmt.Sprintf("雙軌海巡 %d/%d：%s", i+1, total, tq.Tag), pct)
 		}
-		limit := relevanceLimitPerTag
-		if tq.Dimension == QueryRecency {
-			limit = recencyLimitPerTag
-		}
+		limit := perTagDiscoverLimit(total, tq.Dimension)
 		if err := runQuery(tq, limit); err != nil {
 			return nil, err
 		}
 		if input.OnCheckpoint != nil {
-			snapshot := snapshotMergedCandidates(merged, order, false)
+			snapshot := snapshotMergedCandidates(merged, order, false, input.PatrolContext)
 			if err := input.OnCheckpoint(snapshot); err != nil {
 				return nil, err
 			}
@@ -237,7 +262,48 @@ func RunDualTrackDiscover(ctx context.Context, input DualTrackInput, onProgress
 		}
 	}
 
-	out := snapshotMergedCandidates(merged, order, true)
+	cascadeExtra := 0
+	for _, st := range buildTagCascadeStates(queries) {
+		for countCandidatesForTag(merged, st.Tag) < MinRecencyCandidatesPerTag {
+			if cascadeExtra >= MaxRecencyCascadeQueries {
+				break
+			}
+			days := nextRecencyCascadeWindow(st.RanWindows)
+			if days == 0 {
+				break
+			}
+			tq, ok := buildRecencyCascadeQuery(st, days, input.Member.WebSearchProviderEnum())
+			if !ok {
+				st.RanWindows[days] = true
+				continue
+			}
+			if onProgress != nil {
+				onProgress(fmt.Sprintf("近 %d 天結果不足，改搜近 %d 天：%s", previousRecencyWindow(days), days, st.Tag), -1)
+			}
+			limit := perTagDiscoverLimit(total, QueryRecency)
+			if err := runQuery(tq, limit); err != nil {
+				return nil, err
+			}
+			st.RanWindows[days] = true
+			cascadeExtra++
+			if input.OnCheckpoint != nil {
+				snapshot := snapshotMergedCandidates(merged, order, false, input.PatrolContext)
+				if err := input.OnCheckpoint(snapshot); err != nil {
+					return nil, err
+				}
+			}
+			if input.Member.AllowsCrawler && input.Member.BrowserConnected {
+				if err := politeDiscoverPause(ctx); err != nil {
+					return nil, err
+				}
+			}
+		}
+		if cascadeExtra >= MaxRecencyCascadeQueries {
+			break
+		}
+	}
+
+	out := snapshotMergedCandidates(merged, order, true, input.PatrolContext)
 	if onProgress != nil {
 		onProgress(fmt.Sprintf("合併完成，共 %d 篇候選貼文", len(out)), 90)
 	}
@@ -245,32 +311,71 @@ func RunDualTrackDiscover(ctx context.Context, input DualTrackInput, onProgress
 }
 
 func discoverForQuery(ctx context.Context, input DualTrackInput, tq TagQuery, limit int) ([]DiscoverPost, DiscoverChannel, error) {
+	apiKeyword := tq.Tag
+	if shaped := libkg.ThreadsAPIKeyword(tq.Tag); shaped != "" {
+		apiKeyword = shaped
+	}
 	req := DiscoverRequest{
 		Query:   tq.Query,
-		Keyword: tq.Tag,
+		Keyword: apiKeyword,
 		Recency: tq.Dimension == QueryRecency,
 		Limit:   limit,
 		Member:  input.Member,
 		Crawler: input.Crawler,
 	}
-	posts, channel, err := Discover(ctx, req)
-	if err == nil && len(posts) > 0 {
-		return posts, channel, nil
+	merged := map[string]DiscoverPost{}
+	channel := DiscoverChannel("")
+	posts, primaryChannel, err := Discover(ctx, req)
+	for _, post := range posts {
+		key := strings.TrimSpace(post.Permalink)
+		if key == "" {
+			continue
+		}
+		if existing, ok := merged[key]; ok {
+			post.ExternalID = PreferReplyExternalID(existing.ExternalID, post.ExternalID)
+		}
+		merged[key] = post
 	}
-	if input.WebSearch == nil || !input.WebSearch.Enabled() {
+	if primaryChannel != "" {
+		channel = primaryChannel
+	}
+
+	webEnabled := input.WebSearch != nil && input.WebSearch.Enabled()
+	if webEnabled && input.Member.AllowsBrave {
+		webPosts, werr := discoverViaWebSearch(ctx, input.WebSearch, input.Member, tq, limit)
+		if werr != nil && len(merged) == 0 && err != nil {
+			return nil, "", err
+		}
+		for _, post := range webPosts {
+			key := strings.TrimSpace(post.Permalink)
+			if key == "" {
+				continue
+			}
+			merged[key] = post
+		}
+		if len(merged) > 0 && channel == "" {
+			channel = input.Member.WebSearchDiscoverChannel()
+		}
+	} else if len(merged) == 0 {
 		if err != nil {
 			return nil, "", err
 		}
-		return nil, "", fmt.Errorf("%s 未設定且 Threads API 無結果", input.Member.WebSearchProviderLabel())
-	}
-	webPosts, werr := discoverViaWebSearch(ctx, input.WebSearch, input.Member, tq, limit)
-	if werr != nil {
-		if err != nil {
-			return nil, "", err
+		if !webEnabled {
+			return nil, "", fmt.Errorf("%s 未設定且 Threads API 無結果", input.Member.WebSearchProviderLabel())
 		}
-		return nil, "", werr
 	}
-	return webPosts, input.Member.WebSearchDiscoverChannel(), nil
+
+	out := make([]DiscoverPost, 0, len(merged))
+	for _, post := range merged {
+		out = append(out, post)
+	}
+	if len(out) > limit {
+		out = out[:limit]
+	}
+	if channel == "" && len(out) > 0 {
+		channel = DiscoverThreadsAPI
+	}
+	return out, channel, nil
 }
 
 func discoverViaWebSearch(ctx context.Context, client websearch.Client, member MemberContext, tq TagQuery, limit int) ([]DiscoverPost, error) {
@@ -307,20 +412,50 @@ func discoverViaWebSearch(ctx context.Context, client websearch.Client, member M
 	return out, nil
 }
 
-func snapshotMergedCandidates(merged map[string]*ScanCandidate, order []string, applyFinalFilter bool) []ScanCandidate {
+func snapshotMergedCandidates(merged map[string]*ScanCandidate, order []string, applyFinalFilter bool, ctx PostScanContext) []ScanCandidate {
 	out := make([]ScanCandidate, 0, len(order))
 	for _, key := range order {
 		item := merged[key]
-		finalizeScanCandidate(item)
-		if applyFinalFilter && item.ProductFitScore < 30 && item.Priority != "gold" {
+		finalizeScanCandidate(item, ctx)
+		if applyFinalFilter && !passesFinalStrictFilter(item) {
 			continue
 		}
 		out = append(out, *item)
 	}
+	if applyFinalFilter && len(out) == 0 && len(order) > 0 {
+		for _, key := range order {
+			item := merged[key]
+			finalizeScanCandidate(item, ctx)
+			if !PassesRelaxedFinalFilters(item.Text, item.ProductFitScore, ctx) {
+				continue
+			}
+			out = append(out, *item)
+		}
+	}
+	if applyFinalFilter && len(out) == 0 && len(order) > 0 {
+		for _, key := range order {
+			item := merged[key]
+			finalizeScanCandidate(item, ctx)
+			if !PassesIngestFallbackFilters(item.Text, item.ProductFitScore, ctx) {
+				continue
+			}
+			out = append(out, *item)
+		}
+	}
 	return out
 }
 
-func finalizeScanCandidate(item *ScanCandidate) {
+func passesFinalStrictFilter(item *ScanCandidate) bool {
+	if item == nil {
+		return false
+	}
+	if item.ProductFitScore < minPostProductFitPatrol && item.Priority != "gold" {
+		return false
+	}
+	return item.SolvedByProduct
+}
+
+func finalizeScanCandidate(item *ScanCandidate, ctx PostScanContext) {
 	if item == nil {
 		return
 	}
@@ -345,7 +480,7 @@ func finalizeScanCandidate(item *ScanCandidate) {
 		qualP = &v
 	}
 	item.PlacementScore = computePlacementScore(item.Text, item.ProductFitScore, item.HasRecency, engP, semP, qualP)
-	item.SolvedByProduct = item.ProductFitScore >= 55
+	item.SolvedByProduct = PostSolvedByProduct(item.Text, item.ProductFitScore, ctx)
 }
 
 func computePlacementScore(text string, productFit int, recent bool, predictedEngagement *int, semanticScore *int, audienceQuality *int) int {
@@ -413,6 +548,55 @@ func max(a, b int) int {
 	return b
 }
 
+func recencyDaysForCandidate(tq TagQuery) int {
+	if tq.Dimension != QueryRecency {
+		return 0
+	}
+	if tq.RecencyDays > 0 {
+		return tq.RecencyDays
+	}
+	return IdealMaxPostAgeDays
+}
+
+func mergeRecencyDays(existing, incoming int) int {
+	if incoming <= 0 {
+		return existing
+	}
+	if existing <= 0 {
+		return incoming
+	}
+	if incoming < existing {
+		return incoming
+	}
+	return existing
+}
+
+func previousRecencyWindow(days int) int {
+	prev := IdealMaxPostAgeDays
+	for _, window := range RecencyCascadeDays() {
+		if window == days {
+			return prev
+		}
+		prev = window
+	}
+	return IdealMaxPostAgeDays
+}
+
+func perTagDiscoverLimit(totalQueries int, dimension QueryDimension) int {
+	limit := relevanceLimitPerTag
+	if dimension == QueryRecency {
+		limit = recencyLimitPerTag
+	}
+	switch {
+	case totalQueries > 18:
+		return max(7, limit-3)
+	case totalQueries > 14:
+		return max(8, limit-2)
+	default:
+		return limit
+	}
+}
+
 func politeDiscoverPause(ctx context.Context) error {
 	wait := 2*time.Second + jitterDuration(2*time.Second)
 	timer := time.NewTimer(wait)

backend/internal/library/placement/external_id.go

@@ -0,0 +1,50 @@
+package placement
+
+import (
+	"context"
+	"strings"
+
+	libthreads "haixun-backend/internal/library/threadsapi"
+)
+
+// PreferReplyExternalID keeps a numeric Threads media id when merging scan rows.
+func PreferReplyExternalID(existing, incoming string) string {
+	a := strings.TrimSpace(existing)
+	b := strings.TrimSpace(incoming)
+	if libthreads.IsNumericMediaID(a) {
+		return a
+	}
+	if libthreads.IsNumericMediaID(b) {
+		return b
+	}
+	if b != "" {
+		return b
+	}
+	return a
+}
+
+// EnrichDiscoverPostsMediaIDs resolves shortcode-only crawler rows via Threads API when possible.
+func EnrichDiscoverPostsMediaIDs(ctx context.Context, accessToken string, posts []DiscoverPost) []DiscoverPost {
+	token := strings.TrimSpace(accessToken)
+	if token == "" || len(posts) == 0 {
+		return posts
+	}
+	client := libthreads.NewClient(token)
+	out := make([]DiscoverPost, len(posts))
+	copy(out, posts)
+	for i := range out {
+		if libthreads.IsNumericMediaID(out[i].ExternalID) {
+			continue
+		}
+		id, err := client.ResolveReplyMedia(ctx, libthreads.ResolveReplyMediaInput{
+			ExternalID: out[i].ExternalID,
+			Permalink:  out[i].Permalink,
+			HintText:   out[i].Text,
+		})
+		if err != nil || !libthreads.IsNumericMediaID(id) {
+			continue
+		}
+		out[i].ExternalID = id
+	}
+	return out
+}

backend/internal/library/placement/external_id_test.go

@@ -0,0 +1,14 @@
+package placement
+
+import "testing"
+
+func TestPreferReplyExternalIDKeepsNumeric(t *testing.T) {
+	got := PreferReplyExternalID("18123456789012345", "AbCdEf123")
+	if got != "18123456789012345" {
+		t.Fatalf("got %q", got)
+	}
+	got = PreferReplyExternalID("AbCdEf123", "18123456789012345")
+	if got != "18123456789012345" {
+		t.Fatalf("got %q", got)
+	}
+}

backend/internal/library/placement/filter.go

@@ -5,6 +5,7 @@ import "regexp"
 var (
 	placementRecommendRe = regexp.MustCompile(`推薦|求助|請益|請問|哪裡買|有沒有|求分享|困擾|煩惱|怎麼辦|怎麼選|不知道|有推|拜託|求救|卡關`)
 	placementIntentRe    = regexp.MustCompile(`用什麼洗|哪款|哪牌|哪一牌|洗什麼|買什麼|在家洗|自己洗|洗澡怕|洗不乾淨|味道重|皮膚癢|皮膚紅|一直抓|掉毛多|敏感肌|過敏|紅腫|抓癢|異味|不敢洗|第一次洗|洗完還是|越洗越`)
+	painProblemRe        = regexp.MustCompile(`痛|癢|乾|紅|腫|過敏|困擾|煩惱|難搞|不好用|沒效|無效|洗不掉|洗不乾淨|洗不乾|臭|異味|異味重|怕|擔心|問題|不舒服|刺激|脫皮|粗糙|暗沉|掉屑|掉毛|污漬|油漬|發炎`)
 	casualChatRe         = regexp.MustCompile(`好可愛|太萌|晒照|日常分享|隨便發|廢文|路過|笑死|哈哈哈|哈囉|早安|晚安|按讚|追蹤我|純分享|沒有要問`)
 )
 
@@ -35,3 +36,11 @@ func PassesPlacementFilter(text string) bool {
 	}
 	return HasPlacementIntent(text)
 }
+
+// HasPainPointDemand requires the post to read like someone asking for help with a solvable problem.
+func HasPainPointDemand(text string) bool {
+	if !PassesPlacementFilter(text) {
+		return false
+	}
+	return painProblemRe.MatchString(text) || LooksLikeRecommendationPost(text)
+}

backend/internal/library/placement/media_resolve.go

@@ -0,0 +1,57 @@
+package placement
+
+import (
+	"context"
+	"strings"
+
+	libthreads "haixun-backend/internal/library/threadsapi"
+)
+
+type ReplyMediaResolveInput struct {
+	AccessToken  string
+	StorageState string
+	ExternalID   string
+	Permalink    string
+	HintText     string
+}
+
+// ResolveReplyMediaWithFallback resolves a Threads reply target id via API and permalink scraping.
+func ResolveReplyMediaWithFallback(ctx context.Context, in ReplyMediaResolveInput) (string, error) {
+	return resolveReplyMedia(ctx, in, false)
+}
+
+// ResolveReplyMediaForPublish prefers fast permalink scraping, then API lookup.
+func ResolveReplyMediaForPublish(ctx context.Context, in ReplyMediaResolveInput) (string, error) {
+	return resolveReplyMedia(ctx, in, true)
+}
+
+func resolveReplyMedia(ctx context.Context, in ReplyMediaResolveInput, publishFastPath bool) (string, error) {
+	if libthreads.IsNumericMediaID(in.ExternalID) {
+		return strings.TrimSpace(in.ExternalID), nil
+	}
+
+	permalink := strings.TrimSpace(in.Permalink)
+	if publishFastPath && permalink != "" {
+		if scraped, sErr := RunResolveMediaFromPermalink(ctx, permalink, in.StorageState); sErr == nil && libthreads.IsNumericMediaID(scraped) {
+			return scraped, nil
+		}
+	}
+
+	client := libthreads.NewClient(in.AccessToken)
+	id, err := client.ResolveReplyMedia(ctx, libthreads.ResolveReplyMediaInput{
+		ExternalID: in.ExternalID,
+		Permalink:  in.Permalink,
+		HintText:   in.HintText,
+	})
+	if err == nil && libthreads.IsNumericMediaID(id) {
+		return id, nil
+	}
+
+	if !publishFastPath && permalink != "" {
+		if scraped, sErr := RunResolveMediaFromPermalink(ctx, permalink, in.StorageState); sErr == nil && libthreads.IsNumericMediaID(scraped) {
+			return scraped, nil
+		}
+	}
+
+	return "", err
+}

backend/internal/library/placement/parse_threads.go

@@ -23,8 +23,14 @@ func ParseThreadsPostFromWebResult(title, snippet, url string) (ParsedThreadsPos
 	if len(match) < 3 {
 		return ParsedThreadsPost{}, false
 	}
-	text := strings.TrimSpace(strings.Join([]string{strings.TrimSpace(title), strings.TrimSpace(snippet)}, " — "))
-	if len([]rune(text)) < 8 {
+	text := strings.TrimSpace(strings.Join(filterNonEmpty([]string{strings.TrimSpace(title), strings.TrimSpace(snippet)}), " — "))
+	if text == "" {
+		text = strings.TrimSpace(title)
+	}
+	if text == "" {
+		text = strings.TrimSpace(snippet)
+	}
+	if len([]rune(text)) < 6 {
 		return ParsedThreadsPost{}, false
 	}
 	return ParsedThreadsPost{
@@ -35,6 +41,16 @@ func ParseThreadsPostFromWebResult(title, snippet, url string) (ParsedThreadsPos
 	}, true
 }
 
+func filterNonEmpty(items []string) []string {
+	out := make([]string, 0, len(items))
+	for _, item := range items {
+		if strings.TrimSpace(item) != "" {
+			out = append(out, item)
+		}
+	}
+	return out
+}
+
 func normalizeThreadsPermalink(raw string) string {
 	raw = strings.TrimSpace(raw)
 	if raw == "" {

backend/internal/library/placement/patrol_queries.go

@@ -1,24 +1,31 @@
 package placement
 
 import (
+	"sort"
 	"strings"
 
 	libkg "haixun-backend/internal/library/knowledge"
 	"haixun-backend/internal/library/websearch"
 )
 
-const defaultPatrolProductFit = 78
+const (
+	defaultPatrolProductFitNoGraph = 42
+	maxPatrolQueriesPerScan = libkg.MaxScanPatrolKeywords * 2
+)
 
-// CollectPatrolTagQueries builds dual-track crawl jobs from user-edited patrol keywords only.
-func CollectPatrolTagQueries(keywords []string, nodes []libkg.Node, provider websearch.Provider) []TagQuery {
+// CollectPatrolTagQueries builds lean dual-track jobs: relevance + 7d recency per keyword.
+func CollectPatrolTagQueries(keywords []string, nodes []libkg.Node, provider websearch.Provider, patrolInput libkg.PatrolTagInput) []TagQuery {
 	keywords = libkg.NormalizePatrolKeywordList(keywords)
 	if len(keywords) == 0 {
 		return nil
 	}
+	if len(keywords) > libkg.MaxScanPatrolKeywords {
+		keywords = keywords[:libkg.MaxScanPatrolKeywords]
+	}
 
-	out := make([]TagQuery, 0, len(keywords)*3)
+	out := make([]TagQuery, 0, len(keywords)*2)
 	for _, tag := range keywords {
-		fit := productFitForPatrolTag(tag, nodes)
+		fit := productFitForPatrolTag(tag, nodes, patrolInput)
 		if q := BuildRelevanceQuery(provider, tag); q != "" {
 			out = append(out, TagQuery{
 				Tag:             tag,
@@ -36,25 +43,15 @@ func CollectPatrolTagQueries(keywords []string, nodes []libkg.Node, provider web
 				RecencyDays:     IdealMaxPostAgeDays,
 			})
 		}
-		if q30 := BuildRecencyQuery(provider, tag, MaxPostAgeDays); q30 != "" {
-			if q7 := BuildRecencyQuery(provider, tag, IdealMaxPostAgeDays); q30 != q7 {
-				out = append(out, TagQuery{
-					Tag:             tag,
-					Query:           q30,
-					Dimension:       QueryRecency,
-					ProductFitScore: fit,
-					RecencyDays:     MaxPostAgeDays,
-				})
-			}
-		}
 	}
 	return out
 }
 
-func productFitForPatrolTag(tag string, nodes []libkg.Node) int {
+func productFitForPatrolTag(tag string, nodes []libkg.Node, patrolInput libkg.PatrolTagInput) int {
 	tagKey := patrolTagMatchKey(tag)
 	best := 0
-	bestNodeID := ""
+	profile := libkg.BuildIntentProfile(patrolInput)
+	intentFit := libkg.ScoreIntentSimilarity(tag, profile)
 	for _, node := range nodes {
 		score := node.ProductFitScore
 		if score <= 0 {
@@ -72,14 +69,25 @@ func productFitForPatrolTag(tag string, nodes []libkg.Node) int {
 		}
 		if score > best {
 			best = score
-			bestNodeID = node.ID
 		}
 	}
 	if best > 0 {
-		return best
+		return maxPatrolFit(best, intentFit)
 	}
-	_ = bestNodeID
-	return defaultPatrolProductFit
+	if intentFit > 0 {
+		return intentFit
+	}
+	return defaultPatrolProductFitNoGraph
+}
+
+func maxPatrolFit(values ...int) int {
+	best := 0
+	for _, v := range values {
+		if v > best {
+			best = v
+		}
+	}
+	return best
 }
 
 func patrolTagMatchKey(tag string) string {
@@ -93,10 +101,66 @@ func patrolTagMatchKey(tag string) string {
 	return strings.TrimSpace(tag)
 }
 
-// ResolveTagQueries prefers explicit patrol keywords over graph node selection.
-func ResolveTagQueries(nodes []libkg.Node, patrolKeywords []string, provider websearch.Provider) []TagQuery {
-	if len(patrolKeywords) > 0 {
-		return CollectPatrolTagQueries(patrolKeywords, nodes, provider)
+// ResolveTagQueries builds Search API jobs from the best-ranked patrol keywords.
+func ResolveTagQueries(nodes []libkg.Node, patrolKeywords []string, provider websearch.Provider, patrolInput libkg.PatrolTagInput) []TagQuery {
+	nodes = libkg.NodesForPatrolKeywordDerivation(nodes)
+	keywords := patrolKeywords
+	if len(keywords) == 0 {
+		keywords = libkg.SelectBestSearchKeywords(nil, nil, patrolInput, nodes, libkg.MaxScanPatrolKeywords)
 	}
-	return CollectTagQueries(nodes, provider)
+	queries := CollectPatrolTagQueries(keywords, nodes, provider, patrolInput)
+	if len(queries) == 0 {
+		queries = CollectTagQueries(nodes, provider)
+	}
+	return trimPatrolQueries(queries, maxPatrolQueriesPerScan, patrolInput)
+}
+
+func trimPatrolQueries(queries []TagQuery, max int, patrolInput libkg.PatrolTagInput) []TagQuery {
+	profile := libkg.BuildIntentProfile(patrolInput)
+	if max <= 0 || len(queries) <= max {
+		return queries
+	}
+	type ranked struct {
+		query TagQuery
+		key   string
+	}
+	rankedQueries := make([]ranked, 0, len(queries))
+	seen := map[string]struct{}{}
+	for _, item := range queries {
+		key := strings.TrimSpace(item.Query)
+		if key == "" {
+			continue
+		}
+		if _, ok := seen[key]; ok {
+			continue
+		}
+		seen[key] = struct{}{}
+		rankedQueries = append(rankedQueries, ranked{query: item, key: key})
+	}
+	sort.SliceStable(rankedQueries, func(i, j int) bool {
+		left := rankedQueries[i].query.ProductFitScore
+		right := rankedQueries[j].query.ProductFitScore
+		leftIntent := libkg.ScoreIntentSimilarity(rankedQueries[i].query.Tag, profile)
+		rightIntent := libkg.ScoreIntentSimilarity(rankedQueries[j].query.Tag, profile)
+		leftRank := left*2 + leftIntent*3
+		rightRank := right*2 + rightIntent*3
+		if leftRank == rightRank {
+			if rankedQueries[i].query.Dimension == rankedQueries[j].query.Dimension {
+				return rankedQueries[i].key < rankedQueries[j].key
+			}
+			if rankedQueries[i].query.Dimension == QueryRelevance {
+				return true
+			}
+			return false
+		}
+		return leftRank > rightRank
+	})
+	out := make([]TagQuery, 0, max)
+	for _, item := range rankedQueries {
+		out = append(out, item.query)
+		if len(out) >= max {
+			break
+		}
+	}
+	return out
 }

backend/internal/library/placement/patrol_queries_test.go

@@ -8,15 +8,15 @@ import (
 )
 
 func TestCollectPatrolTagQueriesManualOnly(t *testing.T) {
-	queries := CollectPatrolTagQueries([]string{"化療 沐浴乳"}, nil, websearch.ProviderBrave)
+	queries := CollectPatrolTagQueries([]string{"化療 沐浴乳"}, nil, websearch.ProviderBrave, libkg.PatrolTagInput{})
 	if len(queries) < 2 {
 		t.Fatalf("expected relevance + recency queries, got %d", len(queries))
 	}
 	if queries[0].Tag != "化療 沐浴乳" || queries[0].Dimension != QueryRelevance {
 		t.Fatalf("unexpected first query: %+v", queries[0])
 	}
-	if queries[0].ProductFitScore != defaultPatrolProductFit {
-		t.Fatalf("expected default fit %d, got %d", defaultPatrolProductFit, queries[0].ProductFitScore)
+	if queries[0].ProductFitScore != defaultPatrolProductFitNoGraph {
+		t.Fatalf("expected default fit %d, got %d", defaultPatrolProductFitNoGraph, queries[0].ProductFitScore)
 	}
 }
 
@@ -31,7 +31,7 @@ func TestCollectPatrolTagQueriesUsesGraphFit(t *testing.T) {
 			},
 		},
 	}
-	queries := CollectPatrolTagQueries([]string{"化療 沐浴乳"}, nodes, websearch.ProviderBrave)
+	queries := CollectPatrolTagQueries([]string{"化療 沐浴乳"}, nodes, websearch.ProviderBrave, libkg.PatrolTagInput{})
 	if len(queries) == 0 || queries[0].ProductFitScore != 92 {
 		t.Fatalf("expected graph fit 92, got %+v", queries)
 	}
@@ -41,7 +41,7 @@ func TestResolveTagQueriesPrefersPatrolKeywords(t *testing.T) {
 	nodes := []libkg.Node{
 		{ID: "n1", Label: "ignored", SelectedForScan: true, DerivedTags: libkg.DerivedTags{Relevance: []string{"ignored"}}},
 	}
-	queries := ResolveTagQueries(nodes, []string{"手動 關鍵字"}, websearch.ProviderBrave)
+	queries := ResolveTagQueries(nodes, []string{"手動 關鍵字"}, websearch.ProviderBrave, libkg.PatrolTagInput{})
 	if len(queries) == 0 || queries[0].Tag != "手動 關鍵字" {
 		t.Fatalf("expected patrol keyword query, got %+v", queries)
 	}

backend/internal/library/placement/post_relevance.go

@@ -0,0 +1,534 @@
+package placement
+
+import (
+	"strings"
+	"time"
+	"unicode"
+
+	libkg "haixun-backend/internal/library/knowledge"
+)
+
+const (
+	minPostBodyProductFit         = 50
+	minPostBodyProductFitDiscover = 28
+	minPostProductFitPatrol       = 58
+	minPostProductFitDiscover     = 34
+	minPostProductFitRelevant     = 62
+	minPostProductFitRelaxedFinal = 38
+	minPostProductFitIngestFinal  = 28
+	minPostPillarAnchor           = 1
+	patrolMaxPostAgeDays          = IdealMaxPostAgeDays
+	relevanceMaxPostAgeDays       = 14
+)
+
+// PostScanContext carries research map + product signals for post-level filtering.
+type PostScanContext struct {
+	MatchTags       []string
+	ProductName     string
+	ProductFeatures string
+	AudienceSummary string
+	TargetAudience  string
+	Questions       []string
+	Pillars         []string
+	Exclusions      []string
+}
+
+func PostScanContextFromPatrolInput(in libkg.PatrolTagInput, exclusions []string) PostScanContext {
+	return PostScanContext{
+		MatchTags:       append([]string{}, in.MatchTags...),
+		ProductName:     strings.TrimSpace(in.ProductName),
+		ProductFeatures: strings.TrimSpace(in.ProductFeatures),
+		AudienceSummary: strings.TrimSpace(in.AudienceSummary),
+		TargetAudience:  strings.TrimSpace(in.TargetAudience),
+		Questions:       append([]string{}, in.Questions...),
+		Pillars:         append([]string{}, in.Pillars...),
+		Exclusions:      ExpandExclusionTokens(exclusions),
+	}
+}
+
+func ScorePostProductFit(text, searchTag string, ctx PostScanContext) int {
+	text = strings.ToLower(strings.TrimSpace(text))
+	if text == "" {
+		return 0
+	}
+	tagScore := ScoreProductForTag(searchTag, ctx.MatchTags)
+	if tagScore == 0 && ctx.ProductName != "" {
+		tagScore = ScoreProductForTag(searchTag, []string{ctx.ProductName})
+	}
+	postScore := ScoreProductForTag(text, ctx.MatchTags)
+	if postScore == 0 && ctx.ProductName != "" {
+		postScore = scoreTextAgainstPhrase(text, ctx.ProductName)
+	}
+	if ctx.ProductFeatures != "" {
+		postScore = maxInt(postScore, scoreTextAgainstPhrase(text, ctx.ProductFeatures))
+	}
+	for _, pillar := range ctx.Pillars {
+		postScore = maxInt(postScore, scoreTextAgainstPhrase(text, pillar)/2)
+	}
+	combined := postScore
+	if tagScore > 0 && postScore > 0 {
+		combined = (tagScore*2 + postScore*3) / 5
+	} else if postScore > 0 {
+		combined = postScore
+	} else if tagScore > 0 {
+		combined = tagScore / 2
+	}
+	if HasCategoryConflict(text, ctx) {
+		return minInt(combined, 25)
+	}
+	if HasTangentialTopicMismatch(text, ctx) {
+		return minInt(combined, 20)
+	}
+	intentScore := LocalIntentScore(text, ctx)
+	if intentScore > combined {
+		combined = (combined*2 + intentScore*3) / 5
+	}
+	return combined
+}
+
+// PassesDiscoverFilters is the crawl-stage gate: collect candidates from Search/Threads API.
+// Stricter ranking happens at finalize.
+func PassesDiscoverFilters(text, searchTag, postedAt string, dimension QueryDimension, tagFit, recencyDays int, ctx PostScanContext) bool {
+	text = strings.TrimSpace(text)
+	if text == "" {
+		return false
+	}
+	if MatchesExclusion(text, ctx.Exclusions) {
+		return false
+	}
+	if HasCategoryConflict(text, ctx) {
+		return false
+	}
+	if HasTangentialTopicMismatch(text, ctx) {
+		return false
+	}
+	if !HasPainPointDemand(text) && !HasPlacementIntent(text) {
+		return false
+	}
+	if !PassesPostAge(postedAt, dimension, recencyDays) {
+		return false
+	}
+	bodyFit := ScorePostBodyProductFit(text, ctx)
+	effectiveFit := bodyFit
+	if tagFit > 0 && bodyFit > 0 {
+		effectiveFit = (tagFit + bodyFit*2) / 3
+	} else if tagFit > 0 && HasPlacementIntent(text) {
+		effectiveFit = tagFit / 2
+	}
+	if bodyFit < minPostBodyProductFitDiscover {
+		if !(HasPlacementIntent(text) && effectiveFit >= minPostProductFitIngestFinal) {
+			return false
+		}
+	}
+	return effectiveFit >= minPostProductFitDiscover ||
+		(HasPlacementIntent(text) && effectiveFit >= minPostProductFitIngestFinal)
+}
+
+func PassesPostScanFilters(text, searchTag, postedAt string, dimension QueryDimension, tagFit int, ctx PostScanContext) bool {
+	text = strings.TrimSpace(text)
+	if text == "" {
+		return false
+	}
+	if MatchesExclusion(text, ctx.Exclusions) {
+		return false
+	}
+	if HasCategoryConflict(text, ctx) {
+		return false
+	}
+	if HasTangentialTopicMismatch(text, ctx) {
+		return false
+	}
+	if !HasPainPointDemand(text) {
+		return false
+	}
+	if !PassesPostAge(postedAt, dimension, 0) {
+		return false
+	}
+	bodyFit := ScorePostBodyProductFit(text, ctx)
+	if bodyFit < minPostBodyProductFit {
+		return false
+	}
+	if !ProductSolvesPostPain(text, ctx) {
+		return false
+	}
+	effectiveFit := bodyFit
+	if tagFit > 0 && bodyFit > 0 {
+		effectiveFit = (tagFit + bodyFit*2) / 3
+	}
+	minFit := minPostProductFitPatrol
+	if dimension == QueryRelevance {
+		minFit = minPostProductFitRelevant
+	}
+	return effectiveFit >= minFit
+}
+
+// ScorePostBodyProductFit scores only the post body against the product offer (ignores search tag).
+func ScorePostBodyProductFit(text string, ctx PostScanContext) int {
+	return ScorePostProductFit(text, "", ctx)
+}
+
+// ProductSolvesPostPain checks pain in the post aligns with what the product can solve.
+func ProductSolvesPostPain(text string, ctx PostScanContext) bool {
+	if HasCategoryConflict(text, ctx) {
+		return false
+	}
+	if HasTangentialTopicMismatch(text, ctx) {
+		return false
+	}
+	if matchesTopicAnchor(text, ctx) {
+		return true
+	}
+	bodyFit := ScorePostBodyProductFit(text, ctx)
+	if bodyFit < minPostBodyProductFit {
+		return false
+	}
+	for _, q := range ctx.Questions {
+		if tokenHits(text, q) >= 2 && bodyFit >= minPostBodyProductFit {
+			return true
+		}
+	}
+	if ctx.ProductName != "" && scoreTextAgainstPhrase(text, ctx.ProductName) >= 55 {
+		return true
+	}
+	for _, tag := range ctx.MatchTags {
+		if scoreTextAgainstPhrase(text, tag) >= 55 {
+			return true
+		}
+	}
+	return LocalIntentScore(text, ctx) >= minPostBodyProductFit
+}
+
+// PostSolvedByProduct is the final flag for UI: demand + fit + no mismatch.
+func PostSolvedByProduct(text string, effectiveFit int, ctx PostScanContext) bool {
+	return effectiveFit >= minPostProductFitPatrol &&
+		HasPainPointDemand(text) &&
+		ProductSolvesPostPain(text, ctx) &&
+		!HasCategoryConflict(text, ctx) &&
+		!HasTangentialTopicMismatch(text, ctx)
+}
+
+// PassesRelaxedFinalFilters keeps demand + basic fit when strict pass yields zero results.
+func PassesRelaxedFinalFilters(text string, effectiveFit int, ctx PostScanContext) bool {
+	text = strings.TrimSpace(text)
+	if text == "" {
+		return false
+	}
+	if MatchesExclusion(text, ctx.Exclusions) {
+		return false
+	}
+	if HasCategoryConflict(text, ctx) {
+		return false
+	}
+	if HasTangentialTopicMismatch(text, ctx) {
+		return false
+	}
+	if !HasPainPointDemand(text) && !HasPlacementIntent(text) {
+		return false
+	}
+	return effectiveFit >= minPostProductFitRelaxedFinal
+}
+
+// PassesIngestFallbackFilters keeps basic searchable posts when strict/relaxed gates yield zero.
+func PassesIngestFallbackFilters(text string, effectiveFit int, ctx PostScanContext) bool {
+	text = strings.TrimSpace(text)
+	if text == "" {
+		return false
+	}
+	if MatchesExclusion(text, ctx.Exclusions) {
+		return false
+	}
+	if HasCategoryConflict(text, ctx) {
+		return false
+	}
+	if !HasPlacementIntent(text) && !HasPainPointDemand(text) {
+		return false
+	}
+	return effectiveFit >= minPostProductFitIngestFinal
+}
+
+func matchesTopicAnchor(text string, ctx PostScanContext) bool {
+	text = strings.ToLower(text)
+	hits := 0
+	for _, pillar := range ctx.Pillars {
+		if tokenHits(text, pillar) > 0 {
+			hits++
+		}
+	}
+	for _, q := range ctx.Questions {
+		if tokenHits(text, q) >= 2 {
+			hits++
+		}
+	}
+	if hits >= minPostPillarAnchor {
+		return true
+	}
+	for _, tag := range ctx.MatchTags {
+		if tokenHits(text, tag) > 0 {
+			return true
+		}
+	}
+	if ctx.ProductName != "" && tokenHits(text, ctx.ProductName) > 0 {
+		return true
+	}
+	for _, phrase := range []string{ctx.AudienceSummary, ctx.TargetAudience} {
+		if tokenHits(text, phrase) >= 2 {
+			return true
+		}
+	}
+	return false
+}
+
+func PassesPostAge(postedAt string, dimension QueryDimension, recencyDays int) bool {
+	postedAt = strings.TrimSpace(postedAt)
+	if postedAt == "" {
+		// Web Search snippets often lack dates; do not drop at ingest.
+		return true
+	}
+	maxDays := patrolMaxPostAgeDays
+	switch dimension {
+	case QueryRelevance:
+		maxDays = relevanceMaxPostAgeDays
+	case QueryRecency:
+		if recencyDays > 0 {
+			maxDays = recencyDays
+		}
+	}
+	return IsPostWithinMaxAge(postedAt, maxDays, time.Now())
+}
+
+func IsPostWithinMaxAge(postedAt string, maxDays int, now time.Time) bool {
+	if maxDays <= 0 {
+		return true
+	}
+	ts, ok := ParsePostedAt(postedAt)
+	if !ok {
+		return true
+	}
+	if now.IsZero() {
+		now = time.Now()
+	}
+	cutoff := now.AddDate(0, 0, -maxDays)
+	return !ts.Before(cutoff)
+}
+
+func ParsePostedAt(raw string) (time.Time, bool) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return time.Time{}, false
+	}
+	layouts := []string{
+		time.RFC3339,
+		"2006-01-02T15:04:05Z07:00",
+		"2006-01-02 15:04:05",
+		"2006-01-02",
+		"2006/01/02",
+	}
+	for _, layout := range layouts {
+		if ts, err := time.Parse(layout, raw); err == nil {
+			return ts, true
+		}
+	}
+	return time.Time{}, false
+}
+
+func ExpandExclusionTokens(exclusions []string) []string {
+	seen := map[string]struct{}{}
+	out := []string{}
+	add := func(token string) {
+		token = strings.TrimSpace(strings.ToLower(token))
+		if len([]rune(token)) < 2 {
+			return
+		}
+		if _, ok := seen[token]; ok {
+			return
+		}
+		seen[token] = struct{}{}
+		out = append(out, token)
+	}
+	for _, rule := range exclusions {
+		rule = strings.TrimSpace(rule)
+		if rule == "" {
+			continue
+		}
+		add(rule)
+		for _, token := range tokenizePhrase(rule) {
+			add(token)
+		}
+		for _, synonym := range exclusionSynonyms(rule) {
+			add(synonym)
+		}
+	}
+	return out
+}
+
+func exclusionSynonyms(rule string) []string {
+	rule = strings.ToLower(rule)
+	out := []string{}
+	for _, group := range exclusionCategoryGroups {
+		if strings.Contains(rule, group.key) {
+			out = append(out, group.tokens...)
+		}
+	}
+	return out
+}
+
+var exclusionCategoryGroups = []struct {
+	key    string
+	tokens []string
+}{
+	{key: "洗碗", tokens: []string{"洗碗", "洗碗精", "洗碗機", "碗盤", "廚房清潔", "油污"}},
+	{key: "洗衣", tokens: []string{"洗衣", "洗衣精", "洗衣粉", "衣物", "衣服清洗", "污漬"}},
+	{key: "沐浴", tokens: []string{"沐浴", "沐浴乳", "沐浴露", "洗澡"}},
+	{key: "洗髮", tokens: []string{"洗髮", "洗髮精", "頭皮", "髮品"}},
+	{key: "寵物", tokens: []string{"寵物", "貓砂", "狗糧", "貓咪", "狗狗"}},
+	{key: "廚房", tokens: []string{"廚房", "抽油煙機", "鍋具"}},
+}
+
+var productCategoryGroups = []struct {
+	key    string
+	tokens []string
+}{
+	{key: "洗衣", tokens: []string{"洗衣", "洗衣精", "洗衣粉", "衣物", "衣服", "污漬", "漂白"}},
+	{key: "洗碗", tokens: []string{"洗碗", "洗碗精", "洗碗機", "碗盤", "廚房", "油污"}},
+	{key: "沐浴", tokens: []string{"沐浴", "沐浴乳", "沐浴露", "洗澡", "沖澡"}},
+	{key: "洗髮", tokens: []string{"洗髮", "洗髮精", "洗髮乳", "頭皮", "髮絲"}},
+	{key: "清潔", tokens: []string{"清潔", "打掃", "去污"}},
+}
+
+func productCategories(ctx PostScanContext) []string {
+	blob := strings.ToLower(ctx.ProductName + " " + ctx.ProductFeatures + " " + strings.Join(ctx.MatchTags, " "))
+	found := []string{}
+	for _, group := range productCategoryGroups {
+		for _, token := range group.tokens {
+			if strings.Contains(blob, token) {
+				found = append(found, group.key)
+				break
+			}
+		}
+	}
+	return found
+}
+
+func postCategories(text string) []string {
+	text = strings.ToLower(text)
+	found := []string{}
+	for _, group := range productCategoryGroups {
+		for _, token := range group.tokens {
+			if strings.Contains(text, token) {
+				found = append(found, group.key)
+				break
+			}
+		}
+	}
+	return found
+}
+
+var genericProductCategories = map[string]struct{}{
+	"清潔": {},
+}
+
+func HasCategoryConflict(text string, ctx PostScanContext) bool {
+	productCats := productCategories(ctx)
+	if len(productCats) == 0 {
+		return false
+	}
+	postCats := postCategories(text)
+	if len(postCats) == 0 {
+		return false
+	}
+	productSet := map[string]struct{}{}
+	for _, c := range productCats {
+		productSet[c] = struct{}{}
+	}
+	for _, c := range postCats {
+		if _, ok := genericProductCategories[c]; ok {
+			continue
+		}
+		if _, ok := productSet[c]; !ok {
+			return true
+		}
+	}
+	return false
+}
+
+func scoreTextAgainstPhrase(text, phrase string) int {
+	text = strings.ToLower(text)
+	phrase = strings.TrimSpace(strings.ToLower(phrase))
+	if text == "" || phrase == "" {
+		return 0
+	}
+	if strings.Contains(text, phrase) {
+		return 85
+	}
+	best := 0
+	for _, token := range tokenizePhrase(phrase) {
+		if len([]rune(token)) < 2 {
+			continue
+		}
+		if strings.Contains(text, token) {
+			best = maxInt(best, 55)
+		}
+	}
+	return best
+}
+
+func tokenHits(text, phrase string) int {
+	text = strings.ToLower(text)
+	hits := 0
+	for _, token := range tokenizePhrase(phrase) {
+		if len([]rune(token)) < 2 {
+			continue
+		}
+		if strings.Contains(text, token) {
+			hits++
+		}
+	}
+	return hits
+}
+
+func tokenizePhrase(phrase string) []string {
+	phrase = strings.ToLower(strings.TrimSpace(phrase))
+	if phrase == "" {
+		return nil
+	}
+	repl := strings.NewReplacer("，", " ", "、", " ", "。", " ", "；", " ", "/", " ", "｜", " ", "|", " ", "（", " ", "）", " ", "(", " ", ")", " ")
+	phrase = repl.Replace(phrase)
+	var tokens []string
+	for _, part := range strings.Fields(phrase) {
+		part = strings.Trim(part, `"'「」『』：:`)
+		if part != "" {
+			tokens = append(tokens, part)
+		}
+	}
+	if len(tokens) == 0 {
+		return splitRunes(phrase)
+	}
+	return tokens
+}
+
+func splitRunes(s string) []string {
+	var out []string
+	var buf []rune
+	flush := func() {
+		if len(buf) >= 2 {
+			out = append(out, string(buf))
+		}
+		buf = buf[:0]
+	}
+	for _, r := range s {
+		if unicode.Is(unicode.Han, r) {
+			buf = append(buf, r)
+			continue
+		}
+		flush()
+	}
+	flush()
+	return out
+}
+
+func minInt(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}

backend/internal/library/placement/post_relevance_test.go

@@ -0,0 +1,148 @@
+package placement
+
+import (
+	"testing"
+	"time"
+
+	libkg "haixun-backend/internal/library/knowledge"
+)
+
+func TestHasCategoryConflictLaundryVsDish(t *testing.T) {
+	ctx := PostScanContextFromPatrolInput(libkg.PatrolTagInput{
+		ProductName: "天然洗衣精",
+		MatchTags:   []string{"洗衣精", "衣物清潔"},
+	}, nil)
+	text := "請問大家洗碗機清潔劑有推薦嗎？碗盤油污洗不掉"
+	if !HasCategoryConflict(text, ctx) {
+		t.Fatal("expected dishwasher post to conflict with laundry product")
+	}
+	if PassesPostScanFilters(text, "洗衣精 推薦", "", QueryRecency, 80, ctx) {
+		t.Fatal("expected conflicting post to be filtered out")
+	}
+}
+
+func TestPassesPostScanFiltersAcceptsMatchingLaundry(t *testing.T) {
+	ctx := PostScanContextFromPatrolInput(libkg.PatrolTagInput{
+		ProductName: "天然洗衣精",
+		MatchTags:   []string{"洗衣精", "衣物"},
+		Pillars:     []string{"衣物清潔", "敏感皮膚洗衣"},
+	}, []string{"洗碗精等其他品類"})
+	text := "最近衣服洗不乾淨，洗衣精有推薦嗎？污漬一直洗不掉"
+	if !PassesPostScanFilters(text, "洗衣精 推薦", time.Now().Format("2006-01-02"), QueryRecency, 70, ctx) {
+		t.Fatal("expected matching laundry post to pass")
+	}
+}
+
+func TestPassesPostAgeAllowsMissingDateOnRelevance(t *testing.T) {
+	if !PassesPostAge("", QueryRelevance, 0) {
+		t.Fatal("expected missing posted_at to pass age gate at ingest")
+	}
+}
+
+func TestPassesDiscoverFiltersAllowsWebSnippetWithoutDate(t *testing.T) {
+	ctx := PostScanContextFromPatrolInput(libkg.PatrolTagInput{
+		ProductName: "天然洗衣精",
+		MatchTags:   []string{"洗衣精", "衣物"},
+	}, nil)
+	text := "最近衣服洗不乾淨，洗衣精有推薦嗎？污漬一直洗不掉"
+	if !PassesDiscoverFilters(text, "洗衣精 推薦", "", QueryRelevance, 70, 0, ctx) {
+		t.Fatal("expected web snippet without date to pass discover filters")
+	}
+}
+
+func TestPassesPostAgeRejectsOldRelevancePost(t *testing.T) {
+	old := time.Now().AddDate(0, 0, -20).Format("2006-01-02")
+	if PassesPostAge(old, QueryRelevance, 0) {
+		t.Fatal("expected old relevance post to fail age gate")
+	}
+}
+
+func TestHasPainPointDemandRejectsCasualChat(t *testing.T) {
+	if HasPainPointDemand("今天天氣真好，晒照給大家看") {
+		t.Fatal("expected casual chat without demand to fail")
+	}
+}
+
+func TestHasPainPointDemandAcceptsHelpSeeking(t *testing.T) {
+	text := "最近皮膚一直癢，沐浴乳有推薦嗎？"
+	if !HasPainPointDemand(text) {
+		t.Fatal("expected help-seeking post with pain signal to pass")
+	}
+}
+
+func TestPostSolvedByProductRejectsCategoryMismatch(t *testing.T) {
+	ctx := PostScanContextFromPatrolInput(libkg.PatrolTagInput{
+		ProductName: "天然洗衣精",
+		MatchTags:   []string{"洗衣精"},
+	}, nil)
+	text := "洗碗精有推薦嗎？碗盤油污洗不掉"
+	if PostSolvedByProduct(text, 80, ctx) {
+		t.Fatal("expected dish post not to be solved by laundry product")
+	}
+}
+
+func TestHasTangentialTopicMismatchRejectsWashingMachine(t *testing.T) {
+	ctx := PostScanContextFromPatrolInput(libkg.PatrolTagInput{
+		ProductName:     "抗敏無香洗衣精",
+		ProductFeatures: "完全無香、抗敏、適合敏感肌與化療族群",
+		MatchTags:       []string{"無香", "抗敏", "洗衣精"},
+		Pillars:         []string{"化療後衣物清潔", "無香洗衣"},
+	}, nil)
+	text := "請問大家有推薦的洗衣機嗎？想買洗脫烘"
+	if !HasTangentialTopicMismatch(text, ctx) {
+		t.Fatal("expected washing machine post to be tangential mismatch for hypoallergenic detergent")
+	}
+	if PassesPostScanFilters(text, "無香 洗衣精 推薦", time.Now().Format("2006-01-02"), QueryRecency, 80, ctx) {
+		t.Fatal("expected washing machine post to be filtered out")
+	}
+}
+
+func TestHasTangentialTopicMismatchAcceptsDetergentPain(t *testing.T) {
+	ctx := PostScanContextFromPatrolInput(libkg.PatrolTagInput{
+		ProductName:     "抗敏無香洗衣精",
+		ProductFeatures: "完全無香、抗敏",
+		MatchTags:       []string{"無香", "洗衣精"},
+	}, nil)
+	text := "化療後對香味很敏感，有無香洗衣精推薦嗎？"
+	if HasTangentialTopicMismatch(text, ctx) {
+		t.Fatal("expected detergent pain post to pass tangential check")
+	}
+}
+
+func TestHasTangentialTopicMismatchAcceptsMachineWithDetergentNeed(t *testing.T) {
+	ctx := PostScanContextFromPatrolInput(libkg.PatrolTagInput{
+		ProductName:     "抗敏無香洗衣精",
+		ProductFeatures: "完全無香、抗敏",
+		MatchTags:       []string{"無香", "洗衣精"},
+	}, nil)
+	text := "買了洗衣機，但想找不會讓皮膚癢的無香洗衣精"
+	if HasTangentialTopicMismatch(text, ctx) {
+		t.Fatal("expected combined machine + detergent pain post to pass")
+	}
+}
+
+func TestPostSolvedByProductAcceptsAlignedDemand(t *testing.T) {
+	ctx := PostScanContextFromPatrolInput(libkg.PatrolTagInput{
+		ProductName: "天然洗衣精",
+		MatchTags:   []string{"洗衣精", "衣物"},
+		Pillars:     []string{"衣物清潔"},
+	}, nil)
+	text := "衣服污漬洗不掉，洗衣精有推薦嗎？"
+	if !PostSolvedByProduct(text, 70, ctx) {
+		t.Fatal("expected aligned laundry demand to be solved by product")
+	}
+}
+
+func TestExpandExclusionTokensIncludesDishSynonyms(t *testing.T) {
+	tokens := ExpandExclusionTokens([]string{"洗碗精等其他品類"})
+	found := false
+	for _, token := range tokens {
+		if token == "洗碗機" || token == "洗碗精" {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatalf("expected dish synonyms, got %v", tokens)
+	}
+}

backend/internal/library/placement/product_catalog.go

@@ -60,7 +60,8 @@ func ResolveBrandProductContext(brand brandentity.Brand, productID, searchTag st
 	if len(brand.Products) > 0 {
 		picked := RecommendProduct(brand.Products, searchTag, productID)
 		if picked != nil {
-			return BuildMergedProductContext(brand.DisplayName, picked.ProductContext, picked.Label)
+			merged := BuildMergedProductContext(brand.DisplayName, picked.ProductContext, picked.Label)
+			return ApplyPlacementURL(merged, picked.PlacementURL)
 		}
 	}
 	if formatted := ProductBriefFromContext(brand.ProductContext); formatted != "" {

backend/internal/library/placement/product_context.go

@@ -95,6 +95,20 @@ func FormatProductContextForPrompt(raw string) string {
 	return strings.Join(lines, "\n")
 }
 
+func ApplyPlacementURL(productContext, placementURL string) string {
+	placementURL = strings.TrimSpace(placementURL)
+	if placementURL == "" {
+		return productContext
+	}
+	fields := ParseProductContext(productContext)
+	if fields.CtaType == CtaLink && strings.TrimSpace(fields.CtaUrl) != "" {
+		return productContext
+	}
+	fields.CtaType = CtaLink
+	fields.CtaUrl = placementURL
+	return SerializeProductContext(fields)
+}
+
 func ProductBriefFromContext(raw string) string {
 	formatted := FormatProductContextForPrompt(raw)
 	if formatted != "" {

backend/internal/library/placement/product_context_placement_url_test.go

@@ -0,0 +1,25 @@
+package placement
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestApplyPlacementURL(t *testing.T) {
+	raw := `{"brand":"ecostore","product":"沐浴露","features":"無香抗敏"}`
+	got := ApplyPlacementURL(raw, "https://shop.example.com/body-wash")
+	formatted := ProductBriefFromContext(got)
+	if !strings.Contains(formatted, "留言 CTA 連結") || !strings.Contains(formatted, "https://shop.example.com/body-wash") {
+		t.Fatalf("formatted brief = %q", formatted)
+	}
+
+	existing := SerializeProductContext(ProductContextFields{
+		Brand:   "ecostore",
+		Product: "沐浴露",
+		CtaType: CtaLink,
+		CtaUrl:  "https://existing.example.com",
+	})
+	if changed := ApplyPlacementURL(existing, "https://new.example.com"); changed != existing {
+		t.Fatalf("should not override existing cta url")
+	}
+}

backend/internal/library/placement/product_match.go

@@ -2,6 +2,8 @@ package placement
 
 import (
 	"strings"
+
+	brandentity "haixun-backend/internal/model/brand/domain/entity"
 )
 
 func ScoreProductForTag(searchTag string, matchTags []string) int {
@@ -40,6 +42,71 @@ func ScoreProductForTag(searchTag string, matchTags []string) int {
 	return best
 }
 
+// ScoreProductForPost ranks a SKU against the search tag and post body.
+func ScoreProductForPost(productLabel string, matchTags []string, searchTag, postText string) int {
+	tagScore := ScoreProductForTag(searchTag, matchTags)
+	if tagScore == 0 && strings.TrimSpace(productLabel) != "" {
+		tagScore = ScoreProductForTag(searchTag, []string{productLabel})
+	}
+	postScore := ScoreProductForTag(postText, matchTags)
+	if postScore == 0 && strings.TrimSpace(productLabel) != "" {
+		postScore = ScoreProductForTag(postText, []string{productLabel})
+	}
+	for _, token := range categoryTokens(productLabel, matchTags) {
+		if strings.Contains(strings.ToLower(postText), token) {
+			postScore = maxInt(postScore, 78)
+		}
+		if strings.Contains(strings.ToLower(searchTag), token) {
+			tagScore = maxInt(tagScore, 82)
+		}
+	}
+	switch {
+	case tagScore > 0 && postScore > 0:
+		return (tagScore*2 + postScore*3) / 5
+	case postScore > 0:
+		return postScore
+	default:
+		return tagScore
+	}
+}
+
+// RecommendProductForPost picks the best SKU for a single post.
+func RecommendProductForPost(products []brandentity.Product, searchTag, postText, defaultProductID string) *brandentity.Product {
+	if len(products) == 0 {
+		return nil
+	}
+	bestScore := 0
+	var best *brandentity.Product
+	for i := range products {
+		score := ScoreProductForPost(products[i].Label, products[i].MatchTags, searchTag, postText)
+		if score > bestScore {
+			bestScore = score
+			best = &products[i]
+		}
+	}
+	if best != nil && bestScore >= 55 {
+		return best
+	}
+	return RecommendProduct(products, searchTag, defaultProductID)
+}
+
+func categoryTokens(productLabel string, matchTags []string) []string {
+	blob := strings.ToLower(strings.TrimSpace(productLabel + " " + strings.Join(matchTags, " ")))
+	tokens := []string{
+		"洗衣精", "洗衣粉", "洗衣劑", "洗衣液",
+		"沐浴乳", "沐浴露",
+		"洗髮精", "洗髮乳",
+		"洗碗精", "洗碗劑",
+	}
+	out := make([]string, 0, 4)
+	for _, token := range tokens {
+		if strings.Contains(blob, token) {
+			out = append(out, token)
+		}
+	}
+	return out
+}
+
 func maxInt(a, b int) int {
 	if a > b {
 		return a

backend/internal/library/placement/product_match_test.go

@@ -0,0 +1,39 @@
+package placement
+
+import (
+	"testing"
+
+	brandentity "haixun-backend/internal/model/brand/domain/entity"
+)
+
+func TestRecommendProductForPostPicksLaundryOverDefaultBodyWash(t *testing.T) {
+	products := []brandentity.Product{
+		{ID: "body", Label: "無香沐浴乳", MatchTags: []string{"沐浴乳", "無香", "敏感"}},
+		{ID: "laundry", Label: "天然洗衣精", MatchTags: []string{"洗衣精", "衣物", "污漬"}},
+	}
+	post := "最近衣服洗不乾淨，洗衣精有推薦嗎？污漬一直洗不掉"
+	got := RecommendProductForPost(products, "洗衣精 推薦", post, "body")
+	if got == nil || got.ID != "laundry" {
+		id := ""
+		if got != nil {
+			id = got.ID
+		}
+		t.Fatalf("expected laundry product, got %q", id)
+	}
+}
+
+func TestRecommendProductForPostPicksBodyWashForShowerPost(t *testing.T) {
+	products := []brandentity.Product{
+		{ID: "body", Label: "無香沐浴乳", MatchTags: []string{"沐浴乳", "無香", "敏感"}},
+		{ID: "laundry", Label: "天然洗衣精", MatchTags: []string{"洗衣精", "衣物", "污漬"}},
+	}
+	post := "化療後皮膚很乾，沐浴乳有推薦嗎？想要無香味"
+	got := RecommendProductForPost(products, "沐浴乳 推薦", post, "laundry")
+	if got == nil || got.ID != "body" {
+		id := ""
+		if got != nil {
+			id = got.ID
+		}
+		t.Fatalf("expected body wash product, got %q", id)
+	}
+}

backend/internal/library/placement/query_build.go

@@ -5,6 +5,7 @@ import (
 	"strings"
 	"time"
 
+	libkg "haixun-backend/internal/library/knowledge"
 	"haixun-backend/internal/library/websearch"
 )
 
@@ -25,26 +26,37 @@ type TagQuery struct {
 }
 
 func BuildRelevanceQuery(provider websearch.Provider, tag string) string {
-	tag = strings.TrimSpace(tag)
-	if tag == "" {
+	if websearch.ParseProvider(string(provider)) == websearch.ProviderExa {
+		full := strings.TrimSpace(libkg.FullPatrolWebSearchTag(tag))
+		if full == "" {
+			return ""
+		}
+		return fmt.Sprintf("Threads 貼文 繁體中文 %s", full)
+	}
+	core := strings.TrimSpace(libkg.ShortPatrolSearchCore(tag))
+	if core == "" {
+		core = strings.TrimSpace(tag)
+	}
+	if core == "" {
 		return ""
 	}
-	if websearch.ParseProvider(string(provider)) == websearch.ProviderExa {
-		return fmt.Sprintf("Threads 貼文 繁體中文 %s", tag)
-	}
-	return `site:threads.net "` + tag + `"`
+	// Unquoted site search matches more real Threads posts than exact long phrases.
+	return `site:threads.net ` + core + ` 推薦`
 }
 
 func BuildRecencyQuery(provider websearch.Provider, tag string, maxAgeDays int) string {
-	tag = strings.TrimSpace(tag)
-	if tag == "" {
+	core := strings.TrimSpace(libkg.ShortPatrolSearchCore(tag))
+	if core == "" {
+		core = strings.TrimSpace(tag)
+	}
+	if core == "" {
 		return ""
 	}
 	if websearch.ParseProvider(string(provider)) == websearch.ProviderExa {
-		return fmt.Sprintf("Threads 近期貼文 繁體中文 %s", tag)
+		return fmt.Sprintf("Threads 近期貼文 繁體中文 %s 請問", core)
 	}
 	after := FormatAfterDate(maxAgeDays, timeNow())
-	return `site:threads.net "` + tag + `" 請問 after:` + after
+	return `site:threads.net "` + core + `" 請問 after:` + after
 }
 
 func PublishedAfterForRecency(provider websearch.Provider, maxAgeDays int) string {

backend/internal/library/placement/query_build_test.go

@@ -0,0 +1,32 @@
+package placement
+
+import (
+	"strings"
+	"testing"
+
+	"haixun-backend/internal/library/websearch"
+)
+
+func TestBuildRelevanceQueryUsesBroadSiteSearch(t *testing.T) {
+	q := BuildRelevanceQuery(websearch.ProviderBrave, "化療 無香 洗衣精 推薦")
+	if !strings.HasPrefix(q, "site:threads.net ") {
+		t.Fatalf("unexpected query %q", q)
+	}
+	if strings.Contains(q, `"`) {
+		t.Fatalf("expected unquoted broad query, got %q", q)
+	}
+	if !strings.Contains(q, "推薦") {
+		t.Fatalf("expected intent marker in query, got %q", q)
+	}
+}
+
+func TestBuildRecencyQueryUsesShortCore(t *testing.T) {
+	q := BuildRecencyQuery(websearch.ProviderBrave, "化療 無香 洗衣精 推薦 請問", 7)
+	if !strings.Contains(q, "請問 after:") {
+		t.Fatalf("expected recency date filter, got %q", q)
+	}
+	quoted := strings.Trim(q, `site:threads.net `)
+	if strings.Contains(quoted, "推薦") {
+		t.Fatalf("expected short quoted core without 推薦, got %q", q)
+	}
+}

backend/internal/library/placement/recency.go

@@ -6,8 +6,18 @@ const (
 	MaxPostAgeDays      = 30
 	IdealMaxPostAgeDays = 7
 	WebSearchMaxAgeDays = 14
+
+	// MinRecencyCandidatesPerTag triggers wider recency windows when a keyword finds fewer posts.
+	MinRecencyCandidatesPerTag = 1
+	// MaxRecencyCascadeQueries caps extra Search API calls per patrol run.
+	MaxRecencyCascadeQueries = 10
 )
 
+// RecencyCascadeDays is the patrol recency ladder: nearest window first, then shift older.
+func RecencyCascadeDays() []int {
+	return []int{IdealMaxPostAgeDays, WebSearchMaxAgeDays, MaxPostAgeDays}
+}
+
 func FormatAfterDate(maxAgeDays int, now time.Time) string {
 	if now.IsZero() {
 		now = time.Now()

backend/internal/library/placement/recency_cascade.go

@@ -0,0 +1,89 @@
+package placement
+
+import (
+	"haixun-backend/internal/library/websearch"
+)
+
+type tagCascadeState struct {
+	Tag             string
+	GraphNodeID     string
+	ProductFitScore int
+	RanWindows      map[int]bool
+}
+
+func buildTagCascadeStates(queries []TagQuery) []*tagCascadeState {
+	states := map[string]*tagCascadeState{}
+	for _, q := range queries {
+		key := patrolTagMatchKey(q.Tag)
+		if key == "" {
+			continue
+		}
+		st, ok := states[key]
+		if !ok {
+			st = &tagCascadeState{
+				Tag:        q.Tag,
+				RanWindows: map[int]bool{},
+			}
+			states[key] = st
+		}
+		if q.GraphNodeID != "" {
+			st.GraphNodeID = q.GraphNodeID
+		}
+		if q.ProductFitScore > st.ProductFitScore {
+			st.ProductFitScore = q.ProductFitScore
+		}
+		if q.Dimension == QueryRecency && q.RecencyDays > 0 {
+			st.RanWindows[q.RecencyDays] = true
+		}
+	}
+	out := make([]*tagCascadeState, 0, len(states))
+	for _, st := range states {
+		out = append(out, st)
+	}
+	return out
+}
+
+func countCandidatesForTag(merged map[string]*ScanCandidate, tag string) int {
+	key := patrolTagMatchKey(tag)
+	if key == "" {
+		return 0
+	}
+	count := 0
+	for _, item := range merged {
+		if item == nil {
+			continue
+		}
+		if patrolTagMatchKey(item.SearchTag) == key {
+			count++
+		}
+	}
+	return count
+}
+
+func nextRecencyCascadeWindow(ran map[int]bool) int {
+	for _, days := range RecencyCascadeDays() {
+		if ran[days] {
+			continue
+		}
+		return days
+	}
+	return 0
+}
+
+func buildRecencyCascadeQuery(st *tagCascadeState, days int, provider websearch.Provider) (TagQuery, bool) {
+	if st == nil || days <= 0 {
+		return TagQuery{}, false
+	}
+	query := BuildRecencyQuery(provider, st.Tag, days)
+	if query == "" {
+		return TagQuery{}, false
+	}
+	return TagQuery{
+		Tag:             st.Tag,
+		Query:           query,
+		Dimension:       QueryRecency,
+		GraphNodeID:     st.GraphNodeID,
+		ProductFitScore: st.ProductFitScore,
+		RecencyDays:     days,
+	}, true
+}

backend/internal/library/placement/recency_cascade_test.go

@@ -0,0 +1,40 @@
+package placement
+
+import (
+	"testing"
+
+	"haixun-backend/internal/library/websearch"
+)
+
+func TestNextRecencyCascadeWindowSkipsRanWindows(t *testing.T) {
+	ran := map[int]bool{7: true}
+	if got := nextRecencyCascadeWindow(ran); got != 14 {
+		t.Fatalf("expected 14, got %d", got)
+	}
+	ran[14] = true
+	if got := nextRecencyCascadeWindow(ran); got != 30 {
+		t.Fatalf("expected 30, got %d", got)
+	}
+	ran[30] = true
+	if got := nextRecencyCascadeWindow(ran); got != 0 {
+		t.Fatalf("expected 0, got %d", got)
+	}
+}
+
+func TestPassesPostAgeUsesRecencyWindow(t *testing.T) {
+	old := timeNow().AddDate(0, 0, -10).Format("2006-01-02")
+	if PassesPostAge(old, QueryRecency, 7) {
+		t.Fatal("expected 10-day-old post to fail 7-day recency window")
+	}
+	if !PassesPostAge(old, QueryRecency, 14) {
+		t.Fatal("expected 10-day-old post to pass 14-day recency window")
+	}
+}
+
+func TestBuildRecencyCascadeQuery(t *testing.T) {
+	st := &tagCascadeState{Tag: "洗衣精 推薦", ProductFitScore: 55}
+	tq, ok := buildRecencyCascadeQuery(st, 14, websearch.ProviderBrave)
+	if !ok || tq.RecencyDays != 14 || tq.Dimension != QueryRecency {
+		t.Fatalf("unexpected cascade query: %+v ok=%v", tq, ok)
+	}
+}

backend/internal/library/placement/research_map.go

@@ -103,7 +103,7 @@ func BuildResearchMapFinalizeUserPrompt(in ResearchMapInput, analysis string) st
 3. contentGoal 要寫入【產品詳情】的完整產品名稱、近期發文、留言置入時機
 4. questions 至少 8 句、pillars 至少 6 句、exclusions 至少 8 句（exclusions 只寫貼文類型，**不要寫時間／近期／幾天內**）
 5. questions 是「人會發文的求助句」；patrolKeywords 是「人會打進 Threads 搜尋框的短句」，兩者不可混在一起
-6. patrolKeywords 至少 6 組、最多 8 組，每組 6～16 字，從 questions 提煉搜尋短句，必須可直接拿去搜尋`)
+6. patrolKeywords 至少 8 組、最多 10 組，每組 6～16 字，從 questions 提煉搜尋短句，必須可直接拿去搜尋`)
 	return b.String()
 }
 
@@ -149,7 +149,7 @@ func BuildResearchMapSystemPrompt() string {
 - 觸及即排除的**貼文類型／內容方向**；要寫清楚「為什麼不能置入」（純晒照、業配、無求助、跑題癌別、錯品類、已滿意他牌、非病友視角等）
 - **禁止寫時間相關條件**：不要碰不是篩發文時間用的。不可出現「過舊貼文」「非近期發文」「3 天前」「一週以上」「發文太久」等——置入時間窗口只寫在 contentGoal
 
-## patrolKeywords（6～8 組，每組 6～14 字）
+## patrolKeywords（8～10 組，每組 6～14 字）
 - 這不是分類標籤，而是**真人會貼進 Threads 搜尋框的短句**
 - 每組 2～4 個詞，空格分隔；必須同時保留「情境／困擾」與「產品品類／用途」
 - 優先格式：「困擾 品類」、「族群 品類 推薦」、「症狀 品類 請問」，例如「化療 沐浴乳 推薦」「無香 洗衣精 請問」

backend/internal/library/placement/resolve_media_exec.go

@@ -0,0 +1,105 @@
+package placement
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+type resolveMediaInput struct {
+	Permalink    string `json:"permalink"`
+	StorageState string `json:"storage_state,omitempty"`
+}
+
+type resolveMediaOutput struct {
+	MediaID string `json:"mediaId"`
+}
+
+// RunResolveMediaFromPermalink opens a Threads post page via Playwright and extracts numeric media id.
+func RunResolveMediaFromPermalink(ctx context.Context, permalink, storageState string) (string, error) {
+	permalink = strings.TrimSpace(permalink)
+	if permalink == "" {
+		return "", fmt.Errorf("permalink is required")
+	}
+
+	repoRoot, cliPath, err := resolveMediaCLI()
+	if err != nil {
+		return "", err
+	}
+
+	payload, err := json.Marshal(resolveMediaInput{
+		Permalink:    permalink,
+		StorageState: strings.TrimSpace(storageState),
+	})
+	if err != nil {
+		return "", err
+	}
+
+	runCtx, cancel := context.WithTimeout(ctx, 90*time.Second)
+	defer cancel()
+
+	cmd := exec.CommandContext(runCtx, "npx", "tsx", cliPath)
+	cmd.Dir = repoRoot
+	cmd.Stdin = bytes.NewReader(payload)
+	var stdout, stderr bytes.Buffer
+	cmd.Stdout = &stdout
+	cmd.Stderr = &stderr
+	if err := cmd.Run(); err != nil {
+		msg := strings.TrimSpace(stderr.String())
+		if msg == "" {
+			msg = err.Error()
+		}
+		return "", fmt.Errorf("permalink media resolve failed: %s", msg)
+	}
+
+	var out resolveMediaOutput
+	if err := json.Unmarshal(stdout.Bytes(), &out); err != nil {
+		return "", fmt.Errorf("permalink media resolve output parse failed: %w", err)
+	}
+	mediaID := strings.TrimSpace(out.MediaID)
+	if mediaID == "" {
+		return "", fmt.Errorf("permalink media resolve returned empty media id")
+	}
+	return mediaID, nil
+}
+
+func resolveMediaCLI() (repoRoot, cliPath string, err error) {
+	if root := strings.TrimSpace(os.Getenv("HAIXUN_REPO_ROOT")); root != "" {
+		cli := filepath.Join(root, "haixun-backend", "worker", "threads-resolve-media-cli.ts")
+		if fileExists(cli) {
+			return root, cli, nil
+		}
+		cli = filepath.Join(root, "worker", "threads-resolve-media-cli.ts")
+		if fileExists(cli) {
+			return root, cli, nil
+		}
+	}
+
+	cwd, err := os.Getwd()
+	if err != nil {
+		return "", "", fmt.Errorf("resolve media cli: %w", err)
+	}
+	dir := cwd
+	for i := 0; i < 6; i++ {
+		cli := filepath.Join(dir, "haixun-backend", "worker", "threads-resolve-media-cli.ts")
+		if fileExists(cli) {
+			return dir, cli, nil
+		}
+		cli = filepath.Join(dir, "worker", "threads-resolve-media-cli.ts")
+		if fileExists(cli) {
+			return dir, cli, nil
+		}
+		parent := filepath.Dir(dir)
+		if parent == dir {
+			break
+		}
+		dir = parent
+	}
+	return "", "", fmt.Errorf("找不到 threads-resolve-media-cli.ts，請設定 HAIXUN_REPO_ROOT")
+}

backend/internal/library/placement/resolve_reply_target.go

@@ -0,0 +1,18 @@
+package placement
+
+import "strings"
+
+func ResolveReplyTargetID(externalID, permalink string) string {
+	if id := strings.TrimSpace(externalID); id != "" {
+		return id
+	}
+	permalink = normalizeThreadsPermalink(permalink)
+	if permalink == "" {
+		return ""
+	}
+	match := threadsPostURLRe.FindStringSubmatch(permalink)
+	if len(match) < 3 {
+		return ""
+	}
+	return strings.TrimSpace(match[2])
+}

backend/internal/library/placement/resolve_reply_target_test.go

@@ -0,0 +1,17 @@
+package placement
+
+import "testing"
+
+func TestResolveReplyTargetIDFromPermalink(t *testing.T) {
+	got := ResolveReplyTargetID("", "https://www.threads.net/@alice/post/AbCdEf123")
+	if got != "AbCdEf123" {
+		t.Fatalf("got %q", got)
+	}
+}
+
+func TestResolveReplyTargetIDPrefersExternalID(t *testing.T) {
+	got := ResolveReplyTargetID("media-123", "https://www.threads.net/@alice/post/AbCdEf123")
+	if got != "media-123" {
+		t.Fatalf("got %q", got)
+	}
+}

backend/internal/library/placement/source_mode.go

@@ -56,7 +56,7 @@ func ModeAllowsCrawler(mode SearchSourceMode) bool {
 
 // MemberNeedsWebSearchKey reports whether placement scan should require a web search API key.
 func MemberNeedsWebSearchKey(ctx MemberContext) bool {
-	if !ctx.AllowsBrave || ctx.DevMode {
+	if !ctx.AllowsBrave {
 		return false
 	}
 	switch ctx.SearchSourceMode {

backend/internal/library/placement/source_mode_test.go

@@ -20,9 +20,9 @@ func TestMemberNeedsBraveKey(t *testing.T) {
 	if !MemberNeedsBraveKey(braveOnly) {
 		t.Fatal("brave-only should require brave key")
 	}
-	devCrawler := MemberContext{AllowsBrave: true, DevMode: true, SearchSourceMode: SearchSourceCrawler}
-	if MemberNeedsBraveKey(devCrawler) {
-		t.Fatal("dev crawler should not require brave key")
+	testPatrol := MemberContextForCrawlerOnly(MemberContext{AllowsBrave: true, SearchSourceMode: SearchSourceBrave})
+	if MemberNeedsBraveKey(testPatrol) {
+		t.Fatal("test patrol crawler should not require brave key")
 	}
 }
 

backend/internal/library/placement/threads_api.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"strings"
 
+	libkg "haixun-backend/internal/library/knowledge"
 	libthreads "haixun-backend/internal/library/threadsapi"
 )
 
@@ -24,14 +25,19 @@ func keywordSearchViaThreadsAPI(ctx context.Context, req DiscoverRequest) ([]Dis
 		limit = 12
 	}
 
-	// Strip site: prefix for API keyword search.
-	query := strings.TrimSpace(req.Query)
-	query = strings.TrimPrefix(query, "site:threads.net ")
-	query = strings.Trim(query, `"`)
-	if idx := strings.Index(query, " after:"); idx > 0 {
-		query = strings.TrimSpace(query[:idx])
+	query := strings.TrimSpace(libkg.ThreadsAPIKeyword(req.Keyword))
+	if query == "" {
+		query = strings.TrimSpace(req.Query)
+		query = strings.TrimPrefix(query, "site:threads.net ")
+		query = strings.Trim(query, `"`)
+		if idx := strings.Index(query, " after:"); idx > 0 {
+			query = strings.TrimSpace(query[:idx])
+		}
+		query = libkg.ShortPatrolSearchCore(strings.Trim(query, `"`))
+	}
+	if query == "" {
+		return nil, fmt.Errorf("threads api keyword is empty")
 	}
-	query = strings.Trim(query, `"`)
 
 	items, err := client.KeywordSearch(ctx, libthreads.KeywordSearchOptions{
 		Query:      query,
@@ -48,14 +54,18 @@ func keywordSearchViaThreadsAPI(ctx context.Context, req DiscoverRequest) ([]Dis
 		if text == "" {
 			continue
 		}
+		externalID := strings.TrimSpace(item.ID)
+		if !libthreads.IsNumericMediaID(externalID) {
+			continue
+		}
 		permalink := strings.TrimSpace(item.Permalink)
-		if permalink == "" && item.Username != "" && item.ID != "" {
-			permalink = "https://www.threads.net/@" + item.Username + "/post/" + item.ID
+		if permalink == "" && item.Username != "" {
+			permalink = "https://www.threads.net/@" + item.Username + "/post/" + externalID
 		}
 		out = append(out, DiscoverPost{
 			Text:       text,
 			Permalink:  permalink,
-			ExternalID: strings.TrimSpace(item.ID),
+			ExternalID: externalID,
 			Author:     strings.TrimSpace(item.Username),
 			PostedAt:   strings.TrimSpace(item.Timestamp),
 			LikeCount:  item.LikeCount,

backend/internal/library/placement/topic_fit.go

@@ -0,0 +1,42 @@
+package placement
+
+import (
+	"strings"
+
+	libkg "haixun-backend/internal/library/knowledge"
+)
+
+// HasTangentialTopicMismatch uses the shared intent model: broad category overlap
+// without product/research-map intent alignment (generalizes beyond hardcoded lists).
+func HasTangentialTopicMismatch(text string, ctx PostScanContext) bool {
+	text = strings.TrimSpace(text)
+	if text == "" {
+		return false
+	}
+	if matchesTopicAnchor(text, ctx) {
+		return false
+	}
+	profile := libkg.BuildIntentProfile(intentProfileInputFromPostScan(ctx))
+	return libkg.IsTangentialToIntent(text, profile)
+}
+
+func PatrolTagInputFromScanContext(ctx PostScanContext) libkg.PatrolTagInput {
+	return intentProfileInputFromPostScan(ctx)
+}
+
+func intentProfileInputFromPostScan(ctx PostScanContext) libkg.PatrolTagInput {
+	return libkg.PatrolTagInput{
+		ProductName:     ctx.ProductName,
+		ProductFeatures: ctx.ProductFeatures,
+		AudienceSummary: ctx.AudienceSummary,
+		TargetAudience:  ctx.TargetAudience,
+		MatchTags:       append([]string{}, ctx.MatchTags...),
+		Questions:       append([]string{}, ctx.Questions...),
+		Pillars:         append([]string{}, ctx.Pillars...),
+	}
+}
+
+// LocalIntentScore is the offline semantic scorer (no embedding API).
+func LocalIntentScore(text string, ctx PostScanContext) int {
+	return libkg.ScoreIntentSimilarity(text, libkg.BuildIntentProfile(intentProfileInputFromPostScan(ctx)))
+}

backend/internal/library/prompt/files/outreach_placement.system.md

@@ -13,9 +13,10 @@
 4. 不硬推：不要「推薦你試試」「一定要買」「限時優惠」。
 5. Threads 語感：短句、口語、台灣繁體，可適度用 emoji（0～1 個）。
 6. 誠實：不承諾療效、不捏造誇大數據。
-7. 人設與語氣是硬約束：如果有提供人設，留言要符合該角色的用字、節奏、距離感與價值觀。
+7. 人設與語氣是最高優先硬約束：每則留言都必須像指定角色親自回覆，用字、節奏、距離感、價值觀與 8D 風格策略都要一致，不得變成通用網友口吻。
 8. 產品脈絡是硬約束：如果有提供品牌與產品，必須判斷產品如何自然幫上忙；至少一則草稿要明確參考產品特點，但不能硬業配。
 9. 如果產品詳情出現「留言 CTA 連結」，至少一則草稿可以在後段自然附上完整網址；沒有連結時不要捏造網址。
+10. 排版要像真人用手機留言：每則 text 用 2～4 個短段落，段落之間一定要換行（JSON 字串內用 `\n`，可用 `\n\n` 分隔段落），不要整段擠成一大塊。
 
 每則留言 ≤ 500 字。產出 2 種不同切角（例如：純共情建議版 / 輕度分享經驗帶品牌版）。
 

backend/internal/library/prompt/files/outreach_placement.user.md

@@ -8,5 +8,6 @@
 目標貼文作者：@{{author_name}}
 目標貼文：
 {{target_text}}
+{{regenerate_line}}
 
 請產生 {{count}} 則留言草稿，每則都要有溫度、帶一個具體的真實情境或經驗。另外請評估這篇是否值得留言置入（relevance 0-1）與 reason（繁體中文一句話）。