fix(desktop): pin the complete macOS usage-description set + add reminders entitlement

Batch follow-ups on top of the salvaged privacy declarations:
- tests-js/desktop-mac-usage-descriptions.test.ts: EXPECTED_USAGE_DESCRIPTIONS
  now pins the FINAL key set (camera + calendar x2 + reminders x2 + screen
  capture + local network) so the drift-protection assertion locks the whole
  batch as permanent regression coverage.
- entitlements.mac.plist: add com.apple.security.personal-information.reminders
  alongside the calendars entitlement #65220 added — the reminders usage
  descriptions need the matching entitlement under hardened runtime (sibling
  site the original PR missed).

apps/desktop/electron/entitlements.mac.plist

@@ -14,5 +14,7 @@
   <true/>
   <key>com.apple.security.personal-information.calendars</key>
   <true/>
+  <key>com.apple.security.personal-information.reminders</key>
+  <true/>
 </dict>
 </plist>

tests-js/desktop-mac-usage-descriptions.test.ts

@@ -107,6 +107,11 @@ const EXPECTED_USAGE_DESCRIPTIONS: UsageDescriptionRow[] = [
     requiredSubstring: 'audio',
     reason: 'Audio capture backs the voice conversation pipeline.'
   },
+  {
+    key: 'NSCameraUsageDescription',
+    requiredSubstring: 'camera',
+    reason: 'Camera access is requested by plugins/features the user enables.'
+  },
   {
     key: 'NSAppleMusicUsageDescription',
     requiredSubstring: 'Music',
@@ -115,6 +120,38 @@ const EXPECTED_USAGE_DESCRIPTIONS: UsageDescriptionRow[] = [
       'surface a misleading Apple Music permission prompt ' +
       '(kTCCServiceMediaLibrary) when the renderer initializes audio for ' +
       'completion chimes, TTS, or voice.'
+  },
+  {
+    key: 'NSCalendarsUsageDescription',
+    requiredSubstring: 'Calendar',
+    reason: 'Calendar access backs meeting and scheduling support (#64571).'
+  },
+  {
+    key: 'NSCalendarsFullAccessUsageDescription',
+    requiredSubstring: 'Calendar',
+    reason: 'macOS 14+ full-access variant of the calendar declaration.'
+  },
+  {
+    key: 'NSRemindersUsageDescription',
+    requiredSubstring: 'Reminders',
+    reason: 'Reminders access backs personal-assistant scheduling (#64571).'
+  },
+  {
+    key: 'NSRemindersFullAccessUsageDescription',
+    requiredSubstring: 'Reminders',
+    reason: 'macOS 14+ full-access variant of the reminders declaration.'
+  },
+  {
+    key: 'NSScreenCaptureUsageDescription',
+    requiredSubstring: 'screen',
+    reason: 'macOS 15+ periodic screen-recording re-prompts show this copy.'
+  },
+  {
+    key: 'NSLocalNetworkUsageDescription',
+    requiredSubstring: 'local network',
+    reason:
+      'macOS 15+ Local Network Privacy silently denies undeclared apps ' +
+      '(#81563); declaration is required for the prompt to appear at all.'
   }
 ]