50 lines
1.4 KiB
Markdown
50 lines
1.4 KiB
Markdown
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# T740 — product context snapshot loader
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> Status: `done`
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> Milestone: `M4` · Phase C
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> Kind: `feat` · Est. change: `~170 lines`
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## Goal
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從同 owner 的 Brand／Product 載入產品判定上下文並建立不可回寫舊商機的版本快照。
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## Depends on
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- T734
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## Inputs
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- Scout Brand／Product domain repositories
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- `../spec.md` §3.1、§3.3、§4.2
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## Outputs
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| 路徑 | 動作 | 說明 |
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|------|------|------|
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| `apps/backend/internal/module/radar/usecase/product_context.go` | add | owner/parent validation、snapshot construction |
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| `apps/backend/internal/module/radar/usecase/service.go` | edit | 注入 Brand/Product source interface |
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| `apps/backend/internal/module/radar/usecase/product_context_test.go` | add | missing／wrong owner／version snapshot |
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## Behavior
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- snapshot 只含判定與歷史解釋必要資料及 source updated_at。
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- Product 不存在／錯 Brand 明確失敗；不得退回 ServiceProfile product fit。
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- ServiceProfile 只提供選用 regions／remote／forbidden／tone。
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## Out of scope
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- 建議詞與 scoring
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- watch auto pause（T755）
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## Acceptance
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- [x] 更新 Product 後新 snapshot 改版，舊 snapshot fixture 不變。
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```bash
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cd apps/backend && go test ./internal/module/radar/usecase/... -count=1
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```
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Implementation result (2026-08-10): added a read-only Scout catalog bridge,
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owner/parent validation, and immutable Brand/Product context snapshots with
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source updated-at versions.
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