design: upgrade global design of the app

src-tauri/capabilities/default.json

@@ -2,7 +2,7 @@
   "$schema": "../gen/schemas/desktop-schema.json",
   "identifier": "default",
   "description": "Capability for the main window",
-  "windows": ["main"],
+  "windows": ["main", "image-viewer"],
   "permissions": [
     "core:default",
     "opener:default",
@@ -21,6 +21,7 @@
     "core:window:allow-set-cursor-visible",
     "core:window:allow-is-maximized",
     "core:window:allow-is-minimized",
-    "core:window:allow-is-focused"
+    "core:window:allow-is-focused",
+    "core:window:allow-start-resize-dragging"
   ]
 }