滚动截图，细节调整

src-tauri/capabilities/screenshot.json

@@ -1,8 +1,8 @@
 {
   "$schema": "../gen/schemas/desktop-schema.json",
   "identifier": "screenshot",
-  "description": "Capability for screenshot overlay, editor and pin windows",
-  "windows": ["screenshot-overlay*", "screenshot-editor-*", "screenshot-pin"],
+  "description": "Capability for screenshot overlay, editor, pin and scroll-control windows",
+  "windows": ["screenshot-overlay*", "screenshot-editor*", "screenshot-pin", "screenshot-scroll-*"],
   "permissions": [
     "core:default",
     "core:window:allow-hide",
@@ -18,6 +18,7 @@
     "core:window:allow-close",
     "core:event:allow-emit",
     "core:event:allow-listen",
+    "core:webview:allow-create-webview-window",
     "dialog:default",
     "snap-layout:default"
   ]