fix: preserve source focus across native chrome activation

docs/ui-workspace-audit.md

@@ -13,7 +13,7 @@ This audit follows the full conversation, including later corrections. Implement
 | Close/activate/reorder/migrate/detach | Ordinary managed Page methods retained; animated hit bounds and drag anchors use current visual bounds | Native close and drag-out to Endor Window 2 succeeded. API detach/move-back preserved Page 1:135:0. Native cross-window drop, dwell and mixed-DPI were not re-run in this final build |
 | Four developer tools separated | Independent Page instances; Console/Sources/Network/Settings modules and separate per-view state | Earlier native top-level Sources/Console activation and read-only copy/paste verified; no nested navigation remains |
 | Four tools not default or permanently placed | No Tools menu, rail buttons or new-page tool directory; existing API/shortcut retained | Final default surfaces viewed without tool entries |
-| Source reading/selection/copy | Grapheme-boundary selection, no gutter in copy, select-all/copy, Shift navigation, drag edge scrolling | Native single-line drag/copy/paste verified earlier in this change. Final added keyboard/edge behavior compiled; not all combinations manually exercised |
+| Source reading/selection/copy | Grapheme-boundary selection, no gutter in copy, select-all/copy, Shift navigation, drag edge scrolling | Native single-line drag/copy/paste verified earlier in this change. Final keyboard copy was re-run after the chrome-focus fix: drag-copy matched the complete selected line; four Shift+Right operations copied the expected four characters; select-all copied multiline source without a gutter. Drag edge behavior compiled; exhaustive combinations remain untested |
 | Clicking Console output must not jump to prompt/end | Input hit region restricted to actual prompt rows | Native reading/copy path verified earlier; no input hit over transcript-only area |
 | Default page reflects Endor | Objects, code and UI share identity; persistence/model connections explicitly described as work in progress | Referenced chats read: 01a16819-28c3-7ce0-9423-0ffaa19402ce and 01a1689b-77d8-75a2-ba9e-b2fa3dce654e; actual native start surface viewed |
 | Sensible source organization | Runtime/API tests separated; four page view modules; shared painter/selection; native tool Page factory; motion module | All-target Clippy compiled production and test sources. Runtime host reduced from ~7000 to ~1380 lines |
@@ -33,3 +33,14 @@ One placement probe used unsupported == syntax and returned a parse error before
 ## Remaining verification
 
 Isolated Chrome timing/shape comparison, frame-by-frame animation capture, fresh native cross-window drop/dwell on the final build, mixed-DPI cross-screen interaction and exhaustive keyboard/source-selection combinations remain without new runtime evidence. These are not silently marked passed. The shipped Page lifetime/GC model was preserved; no new persistence or AI backend is claimed.
+
+
+## Final focus regression fix
+
+Final native retesting found a real regression: title-strip mouse events cleared the active editor focus. Window activation performed before automated key events exposed the same behavior. Chrome mouse presses now preserve content focus; developer pane hit testing ignores points outside the pane; frame publication updates the keyboard route according to the active Page. No source, tab geometry or selection state is logged by the shipped build.
+
+After the fix, direct system clipboard comparisons (without printing clipboard contents) confirmed selected-line equality (28 characters), Shift+Right selection equality (4 characters), and multiline select-all with no line-number gutter. The temporary Sources Page was closed afterwards. All-target Clippy, formatting and release building passed again.
+
+## Local delivery state
+
+Implementation commits: 3220544 (runtime test-source separation), 656522e (managed workspace/chrome implementation), d3165b1 (behavior and requirement audit), followed by the chrome-focus fix commit. A push to origin/main was attempted once and rejected by automatic approval review because explicit authorization for this default-branch remote mutation was required. No alternative push route was attempted. The remote remains unchanged pending the user's approval.

src/app.rs

@@ -325,6 +325,10 @@ impl TesseraApp {
         if let Ok(namespace) = self.namespace.read() {
             self.developer_tools.document_updated(&namespace.document);
             let frame = &namespace.document.frame;
+            self.guest_keyboard = !frame
+                .tabs
+                .iter()
+                .any(|tab| tab.active && tab.developer_tool.is_some());
             if self.tab_pressed.as_ref().is_some_and(|pressed| {
                 frame.session != pressed.session
                     || frame.fault.is_some()
@@ -1397,7 +1401,12 @@ impl ApplicationHandler<AppEvent> for TesseraApp {
                     {
                         let _ = window.drag_window();
                     }
-                    self.guest_keyboard = !self.guest_covered(self.pointer);
+                    if self.pointer.y >= crate::tabs::height(&[]) {
+                        self.guest_keyboard = !self.guest_covered(self.pointer);
+                        if self.guest_keyboard {
+                            self.developer_tools.blur();
+                        }
+                    }
                     self.tab_pressed = self.tab_hit();
                     self.tab_drag_grab = self
                         .tab_pressed
@@ -1406,9 +1415,6 @@ impl ApplicationHandler<AppEvent> for TesseraApp {
                         .and_then(|input| self.drag_anchor(input));
                     self.tab_drag_origin = self.tab_drag_grab.map(|_| self.pointer);
                     self.guest_pressed = self.guest_hit();
-                    if self.guest_keyboard {
-                        self.developer_tools.blur();
-                    }
                     self.developer_tools.press(
                         &self.layout.developer_tools,
                         self.pointer,

src/developer_tools.rs

@@ -296,7 +296,7 @@ impl DeveloperToolsState {
         self.preedit.clear();
     }
     pub fn press(&mut self, layout: &DeveloperToolsLayout, p: Point, activity: &Activity) {
-        if !self.open {
+        if !self.open || !layout.panel.contains(p) {
             return;
         }
         self.preedit.clear();