fix(window): enable custom titlebar controls

scripts/window-capabilities.node-test.js

@@ -0,0 +1,26 @@
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import test from 'node:test';
+
+const capability = JSON.parse(fs.readFileSync('src-tauri/capabilities/default.json', 'utf8'));
+const permissions = new Set(capability.permissions);
+
+test('custom window controls have required Tauri permissions', () => {
+  const windowControls = fs.readFileSync('src/components/WindowControls.tsx', 'utf8');
+  const requiredPermissions = new Map([
+    ['.close()', 'core:window:allow-close'],
+    ['.minimize()', 'core:window:allow-minimize'],
+    ['.startDragging()', 'core:window:allow-start-dragging'],
+    ['.toggleMaximize()', 'core:window:allow-toggle-maximize'],
+  ]);
+
+  for (const [apiCall, permission] of requiredPermissions) {
+    if (windowControls.includes(apiCall)) {
+      assert.equal(
+        permissions.has(permission),
+        true,
+        `${apiCall} requires ${permission} in src-tauri/capabilities/default.json`
+      );
+    }
+  }
+});