Fix Tauri ACL permissions for chat windows

- Add chat-* window pattern to allow chat popup windows
- Add event permissions (listen, unlisten, emit)
- Add window permissions (close, hide, show, set-focus)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/desktop/src-tauri/capabilities/default.json

@@ -1,10 +1,19 @@
 {
   "$schema": "../gen/schemas/desktop-schema.json",
   "identifier": "default",
-  "description": "Capability for the main window",
-  "windows": ["main"],
+  "description": "Capability for all windows",
+  "windows": ["main", "chat-*"],
   "permissions": [
     "core:default",
+    "core:event:default",
+    "core:event:allow-listen",
+    "core:event:allow-unlisten",
+    "core:event:allow-emit",
+    "core:window:default",
+    "core:window:allow-close",
+    "core:window:allow-hide",
+    "core:window:allow-show",
+    "core:window:allow-set-focus",
     "opener:default",
     "store:default",
     "store:allow-load",