bcc.py

@@ -1253,6 +1253,31 @@ class LogViewerDialog(QDialog):
         super().closeEvent(event)
 
 
+# --------------------------------------------------------------------------- #
+# Bundled assets (icons) — resolves both a normal source run and a frozen
+# PyInstaller build (onefile extracts assets under sys._MEIPASS).
+# --------------------------------------------------------------------------- #
+def _asset_dir() -> Path:
+    base = getattr(sys, "_MEIPASS", None)
+    return Path(base) if base else Path(__file__).resolve().parent
+
+
+def _app_icon() -> QIcon:
+    """Multi-resolution app/window icon from the bundled PNGs (falls back to
+    the .ico). Returns a null QIcon if no asset is found."""
+    icon = QIcon()
+    base = _asset_dir() / "icons" / "twin-gears" / "rounded"
+    for size in (16, 32, 48, 64, 128, 256, 512):
+        f = base / f"icon-{size}.png"
+        if f.is_file():
+            icon.addFile(str(f))
+    if icon.isNull():
+        ico = _asset_dir() / "icons" / "app.ico"
+        if ico.is_file():
+            icon.addFile(str(ico))
+    return icon
+
+
 # --------------------------------------------------------------------------- #
 # About dialog
 # --------------------------------------------------------------------------- #
@@ -1274,9 +1299,7 @@ class AboutDialog(QDialog):
         self._worker: UpdateCheckWorker | None = None
         self._release_url: str | None = None
 
-        icon_path = (
-            Path(__file__).resolve().parent / "icons" / "twin-gears" / "rounded" / "icon-128.png"
-        )
+        icon_path = _asset_dir() / "icons" / "twin-gears" / "rounded" / "icon-128.png"
         if icon_path.is_file():
             self.setWindowIcon(QIcon(str(icon_path)))
 
@@ -2366,9 +2389,23 @@ class MainWindow(QMainWindow):
 
 
 def main():
+    if sys.platform == "win32":
+        # Without an explicit AppUserModelID, Windows taskbar groups the app
+        # under the default host/Python icon instead of our own window icon.
+        try:
+            import ctypes
+
+            ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID(
+                "io.avezzano.better-claude-config"
+            )
+        except Exception:
+            pass
     app = QApplication(sys.argv)
     app.setApplicationName("Better Claude Config")
     app.setApplicationDisplayName("Better Claude Config")
+    icon = _app_icon()
+    if not icon.isNull():
+        app.setWindowIcon(icon)
     app.setStyleSheet(STYLESHEET)
     win = MainWindow()
     win.show()

bcc.spec

@@ -31,7 +31,7 @@ a = Analysis(
     ["bcc.py"],
     pathex=[],
     binaries=[],
-    datas=[],
+    datas=[("icons", "icons")],
     hiddenimports=[],
     hookspath=[],
     hooksconfig={},

tests/test_core.py

@@ -1326,3 +1326,18 @@ def test_health_from_spawn_result_failed_without_stderr_has_no_dash():
     }
     _, summary = c.health_from_spawn_result(result)
     assert "—" not in summary
+
+
+# --------------------------------------------------------------------------- #
+# App icon assets present (issue #20 — icons must exist to be bundled/loaded)
+# --------------------------------------------------------------------------- #
+def test_app_icon_assets_present():
+    from pathlib import Path
+
+    root = Path(c.__file__).resolve().parent
+    rounded = root / "icons" / "twin-gears" / "rounded"
+    # The window-icon builder in bcc.py loads these sizes; keep them present.
+    for size in (16, 32, 128, 256):
+        assert (rounded / f"icon-{size}.png").is_file(), f"missing icon-{size}.png"
+    assert (root / "icons" / "app.ico").is_file()
+    assert (root / "icons" / "app.icns").is_file()