fix(frontend): sync sidebar pause menu with per-worker background task state

Only require a worker to be paused if it currently has pending work for
that folder, instead of demanding all four worker flags be true. The
background tasks panel only lets you toggle stages it shows, so the old
check stayed out of sync after pausing everything visible.

Also grants start-dragging and start-resize-dragging window permissions.

src-tauri/capabilities/default.json

@@ -2,7 +2,9 @@
   "$schema": "../gen/schemas/desktop-schema.json",
   "identifier": "default",
   "description": "Capability for the main window",
-  "windows": ["main"],
+  "windows": [
+    "main"
+  ],
   "permissions": [
     "core:default",
     "opener:default",
@@ -19,6 +21,8 @@
     "core:window:allow-minimize",
     "core:window:allow-close",
     "core:window:allow-toggle-maximize",
-    "core:window:allow-is-maximized"
+    "core:window:allow-is-maximized",
+    "core:window:allow-start-dragging",
+    "core:window:allow-start-resize-dragging"
   ]
-}
+}