Show overlays only after activation completes

The local probe confirmed activation is asynchronous on macOS 26:
isActive flips on a later runloop tick, so overlays shown in the same
tick as activate() belong to a still-inactive app and misses clicks.
Delay overlay creation by a tick and log the activation state at show
time.

💘 Generated with Crush

Assisted-by: Crush:deepseek-v4-flash-0731

build-app.sh

@@ -108,9 +108,9 @@ cat > "$APP/Contents/Info.plist" <<'PLIST'
     <key>CFBundleIconFile</key>
     <string>Icon</string>
     <key>CFBundleShortVersionString</key>
-    <string>1.6.3</string>
+    <string>1.6.4</string>
     <key>CFBundleVersion</key>
-    <string>63</string>
+    <string>64</string>
     <key>LSUIElement</key>
     <true/>
     <key>NSHighResolutionCapable</key>