Typing into a one-line field replaces it, a named control beats stray coordinates, and a box left by a hard stop starts on the second try

- Typed into the middle of Chromium's 「about:blank」, an address came out as
  chrome://blankchrome//settings/search, and every step after it went wrong. Typing into a
  field by name or number now selects a one-line field's text first (ctrl+a / cmd+a) so the
  text replaces it; append=true keeps it. Text areas are left alone.
- A model sending name plus x: 0, y: 0 had its click land in the screen's corner: a name (or
  number) now always wins over coordinates.
- After the VM went down hard, the box's first start failed in gVisor ("mount source already
  has a filestore file … repeated submounts are not supported") and the second worked: waking
  or restarting the box tries once more on exactly that error.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Uirha5F5gJt93t3yEx3XcS

src/cloudbox.rs

@@ -595,6 +595,21 @@ fn docker_prefix() -> String {
     }
 }
 
+/// Start (or restart) the box, once more when gVisor trips over what an unclean stop left
+/// behind: after the VM or the computer went down hard, the first start fails with "mount source
+/// already has a filestore file … repeated submounts are not supported" and clears it itself,
+/// and the second one works.
+fn start_once_more(args: &[&str]) -> Result<String, String> {
+    match dk(args) {
+        Err(e) if e.contains("filestore") || e.contains("repeated submounts") => {
+            log("上次沒有正常關機，留下的暫存檔擋住了開機，再試一次…");
+            std::thread::sleep(Duration::from_secs(2));
+            dk(args)
+        }
+        r => r,
+    }
+}
+
 /// Run docker; Ok(stdout) or Err(stderr).
 fn dk(args: &[&str]) -> Result<String, String> {
     // Never block forever on the daemon: a hung docker daemon used to pile up a new stuck
@@ -1060,7 +1075,7 @@ pub fn ensure_running() -> Result<(), String> {
             set_run(Run::Starting("喚醒中"));
             log("喚醒電腦…");
             let st = dk(&["inspect", "-f", "{{.State.Status}}", container()]).unwrap_or_default();
-            let woke = if st == "paused" { dk(&["unpause", container()]) } else { dk(&["start", container()]) };
+            let woke = if st == "paused" { dk(&["unpause", container()]) } else { start_once_more(&["start", container()]) };
             woke.map_err(|e| format!("叫不醒電腦：{e}")).and_then(|_| wait_ready(BOOT_WAIT_MS))
         }
         Run::Starting(_) => {
@@ -1072,7 +1087,7 @@ pub fn ensure_running() -> Result<(), String> {
             // A broken container: start it again.
             log(&format!("電腦狀態異常（{e}），重新啟動…"));
             set_run(Run::Starting("連線中"));
-            dk(&["restart", container()]).map_err(|e| e.to_string()).and_then(|_| wait_ready(BOOT_WAIT_MS))
+            start_once_more(&["restart", container()]).map_err(|e| e.to_string()).and_then(|_| wait_ready(BOOT_WAIT_MS))
         }
     };
     match &result {
@@ -1752,11 +1767,17 @@ pub fn box_script(name: &str, v: &Value, scale: (f64, f64)) -> Result<(String, S
                 return Err("請給要打的字".into());
             }
             let mut script = String::new();
-            // Into a field by its number: click it first, like a person would.
+            // Into a field by its number: click it first, like a person would. A one-line field
+            // (an address bar, a search box) gets what it holds selected first, so the text
+            // replaces it: typed into the middle of 「about:blank」 the address became garbage.
+            // ("append": true keeps what is there.)
             let field = match by_number(v) {
                 Some(r) => {
                     let ((x, y), what) = r?;
                     script.push_str(&format!("xdotool mousemove {x} {y} sleep 0.03 click 1 sleep 0.15"));
+                    if replaces_field(&what, v) {
+                        script.push_str(" && xdotool key --clearmodifiers ctrl+a sleep 0.05");
+                    }
                     format!("在 {what}")
                 }
                 None => String::new(),
@@ -1801,6 +1822,12 @@ pub fn box_script(name: &str, v: &Value, scale: (f64, f64)) -> Result<(String, S
 /// Type text into the window in front: short plain text key by key; anything else (another
 /// language, or long text, which key by key could outlast the step's 30 s and then get typed
 /// twice when the bot tried again) pasted through the clipboard.
+/// Typing into this control replaces what it holds: a one-line field (輸入框), unless the step
+/// asks to add to it. A document's text area is left alone (selecting all would replace a file).
+pub fn replaces_field(what: &str, v: &Value) -> bool {
+    what.starts_with("輸入框") && !v["append"].as_bool().unwrap_or(false)
+}
+
 fn type_script(text: &str) -> String {
     let q = crate::tools::sh_quote(text);
     if text.is_ascii() && text.chars().count() <= TYPE_KEYS_MAX_CHARS {

src/computer.rs

@@ -295,8 +295,8 @@ pub fn specs_for(computers: &[String], default: &str, chosen: bool) -> Vec<Value
             "parameters": {"type": "object", "properties": {}}}),
         json!({"name": "computer_use_click", "description": "Click a control: by its name as the latest list shows it (name, e.g. 4, Close, 自動更新 — easiest, no number to look up), or by its number (ref) when two share a name. Only for something with neither (a spot in a picture or game): x, y in the picture's pixels. Returns the next picture.",
             "parameters": {"type": "object", "properties": {"ref": rf, "name": named, "x": {"type": "number"}, "y": {"type": "number"}, "button": {"type": "string", "enum": ["left", "right", "middle"]}, "count": {"type": "integer", "description": "2 for a double click"}, "modifier_keys": mods}}}),
-        json!({"name": "computer_use_typing", "description": "Type text (any language) into a field by its number (ref; it is clicked first), or where the cursor is. submit=true presses return after it (send, search, run a command). Returns the next picture.",
+        json!({"name": "computer_use_typing", "description": "Type text (any language) into a field by its name or number (it is clicked first; a one-line field's old text is replaced, as if selected first — append=true adds to it instead), or where the cursor is. submit=true presses return after it (send, search, open the address). Returns the next picture.",
-            "parameters": {"type": "object", "properties": {"value": {"type": "string"}, "ref": rf, "name": named, "submit": {"type": "boolean"}}, "required": ["value"]}}),
+            "parameters": {"type": "object", "properties": {"value": {"type": "string"}, "ref": rf, "name": named, "submit": {"type": "boolean"}, "append": {"type": "boolean", "description": "Keep the field's text and add to it"}}, "required": ["value"]}}),
         json!({"name": "computer_use_press_key", "description": "Press a key or shortcut in the app in front: return, tab, escape, delete, up, slash, cmd+c, cmd+shift+t, cmd+space. Several in order: separate with spaces (\"cmd+a delete\"). On a Linux computer cmd means ctrl. Returns the next picture.",
             "parameters": {"type": "object", "properties": {"key": {"type": "string"}, "hold_duration_ms": {"type": "integer"}}, "required": ["key"]}}),
         json!({"name": "computer_use_scroll", "description": "Scroll a list or page: on a control by number (ref), or at x, y, or where the pointer is. Returns the next picture.",
@@ -857,11 +857,16 @@ pub fn act(name: &str, v: &Value, scale: (f64, f64)) -> Result<String, String> {
             if text.is_empty() && !submit {
                 return Err("請給要打的字".into());
             }
-            // Into a field by its number: click it first, like a person would.
+            // Into a field by its number: click it first, like a person would; a one-line field
+            // gets what it holds replaced (cloudbox::replaces_field).
             let at = place_of(&json!({"ref": v["ref"]}), scale)?;
-            if let Some((x, y, _)) = &at {
+            if let Some((x, y, what)) = &at {
                 mac::click(*x, *y, "left", 1, 0);
                 std::thread::sleep(std::time::Duration::from_millis(150));
+                if crate::cloudbox::replaces_field(what.split_once('（').map(|(_, w)| w).unwrap_or(what), v) {
+                    press_keys("cmd+a", KEY_HOLD_SECS)?;
+                    std::thread::sleep(std::time::Duration::from_millis(50));
+                }
             }
             if !text.is_empty() {
                 mac::type_text(text);

src/marks.rs

@@ -72,7 +72,9 @@ pub fn names_to_numbers(v: &mut serde_json::Value, spots: Option<&Spots>) -> Res
         // ("name" in the screen tools; "text" too, the word the browser tools use.)
         let named = ["name", "text"].iter().find_map(|k| p[*k].as_str().map(str::trim).filter(|t| !t.is_empty()).map(String::from));
         if let Some(t) = named {
-            if p["ref"].is_null() && p["x"].is_null() {
+            // A name wins over coordinates sent along with it (x: 0, y: 0 from a model filling
+            // every field): the click went to the screen's corner.
+            if p["ref"].is_null() || p["ref"].as_str().is_some_and(|r| r.trim().is_empty()) {
                 let s = spots.ok_or("先用 computer_use_screenshot 看一下畫面，再照清單上的名字或編號操作。")?;
                 p["ref"] = serde_json::Value::String(s.named(&t)?.to_string());
             }
@@ -348,6 +350,10 @@ mod tests {
         let mut one = serde_json::json!({"name": "自動更新"});
         names_to_numbers(&mut one, Some(&spots)).unwrap();
         assert_eq!(one["ref"], "4");
+        // A name with x: 0, y: 0 beside it: the name.
+        let mut both = serde_json::json!({"name": "AC", "x": 0.0, "y": 0.0});
+        names_to_numbers(&mut both, Some(&spots)).unwrap();
+        assert_eq!(both["ref"], "2");
     }
 
     #[test]