chore: sync local working copy as of 2026-08-15

The Gitea repo was initialised from an earlier snapshot, so main and the
machine this runs on had drifted apart in 153 files before any UI work
started. This commit brings the branch up to the local tree as it stood
on 2026-08-15 21:31 (from cowork_local.7z), so the redesign that follows
shows up as its own reviewable diff instead of being mixed in with the
pre-existing divergence.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

app.py

@@ -18,7 +18,7 @@ from . import APP_NAME, DISPLAY_NAME, __version__
 from .config import PROVIDER_LABELS, AppConfig
 from .i18n import LANGUAGE_SHORT, LANGUAGES, get_language, on_language_changed, set_language, tr
 from .state import AppContext
-from .theme import ACCENT, stylesheet
+from .theme import current_palette, set_active_theme, stylesheet
 from .core.task_scheduler import TaskScheduler
 from .ui.cowork_tab import CoworkTab
 from .ui.dashboard_tab import DashboardTab
@@ -64,10 +64,12 @@ class _Toast(QLabel):
         self._timer.timeout.connect(self.hide)
 
     def show_message(self, text: str, ok: bool = True, ms: int = 4500) -> None:
-        bg = "#1f9d63" if ok else "#e5484d"
+        p = current_palette()
+        bg = p.success_soft if ok else p.danger_soft
+        fg = p.success if ok else p.danger
         self.setStyleSheet(
-            f"#toast {{ background:{bg}; color:white; border-radius:12px;"
-            f" padding:10px 16px; font-weight:600; }}")
+            f"#toast {{ background:{bg}; color:{fg}; border:1px solid {fg};"
+            f" border-radius:{p.radius}px; padding:10px 16px; font-weight:600; }}")
         self.setText(text)
         self.adjustSize()
         self.move(14, 14)          # top-left of the window
@@ -253,8 +255,8 @@ class MainWindow(QMainWindow):
         # widget sits at the right end and is never cleared by showMessage (which
         # writes on the left).
         self._credit = QLabel(tr("app.credit"))
-        self._credit.setObjectName("hint")
-        self._credit.setStyleSheet("color: rgba(140,146,152,0.85); padding: 0 10px;")
+        self._credit.setObjectName("faint")
+        self._credit.setStyleSheet("padding: 0 10px;")
         self.statusBar().addPermanentWidget(self._credit)
         self._restore_sessions()
         self._setup_tray()
@@ -531,9 +533,8 @@ class MainWindow(QMainWindow):
     def _build_topbar(self) -> QWidget:
         bar = QWidget()
         bar.setObjectName("topbar")
-        # Transparent: the logo/provider/language text sits directly on the
-        # window background, no separate card box behind it.
-        bar.setStyleSheet("#topbar { background: transparent; border: none; }")
+        # Styled centrally (see theme._TEMPLATE): flat, with a single hairline
+        # separating it from the content below — no card box behind it.
         h = QHBoxLayout(bar)
         h.setContentsMargins(16, 10, 12, 10)
         h.setSpacing(10)
@@ -548,7 +549,7 @@ class MainWindow(QMainWindow):
             self.logo_img.setVisible(False)
         h.addWidget(self.logo_img)
         self.logo_lbl = QLabel(tr("app.logo"))
-        self.logo_lbl.setStyleSheet(f"font-weight:800; font-size:16px; color:{ACCENT};")
+        self.logo_lbl.setObjectName("brand")   # styled centrally — see theme._TEMPLATE
         h.addWidget(self.logo_lbl)
         h.addStretch(1)
 
@@ -738,6 +739,7 @@ class MainWindow(QMainWindow):
     def _apply_theme(self) -> None:
         app = QApplication.instance()
         if app:
+            set_active_theme(self.ctx.config.theme)
             app.setStyleSheet(stylesheet(self.ctx.config.theme))
         # Re-apply theme styles to chat bubbles so they adapt to the new theme.
         self.cowork.apply_theme()
@@ -843,6 +845,7 @@ def run(argv: List[str] | None = None) -> int:
             ctx.config.save()
     except Exception:  # noqa: BLE001 - seeding must never block startup
         pass
+    set_active_theme(ctx.config.theme)
     app.setStyleSheet(stylesheet(ctx.config.theme))
 
     # Follow the OS light/dark scheme live when theme is "Auto (System)".
@@ -858,6 +861,7 @@ def run(argv: List[str] | None = None) -> int:
 
     def _reapply_system_theme(*_a):
         if ctx.config.theme == "system":
+            set_active_theme("system")
             app.setStyleSheet(stylesheet("system"))
             win.cowork.apply_theme()
     try: