test(ai): expand AI flow and clipboard semantic coverage

- Cover reply-variant decision paths, scene-detector abstention, and
  the merged reply center stance catalog.
- Lock in clipboard semantic analyzer thresholds, complaint-only
  suppression, and existing-skill routing.
- Add durable session, refresh, and managed-gateway reliability tests
  for the Apple account path.
- Verify personal-style prompt derivation, low-confidence ASR
  tendencies, and Polish style learning against real corpus evidence.
- Exercise the assistant keyboard and Polish styles UI flows in
  end-to-end UI tests.

OSGKeyboardTests/OfficialSkillCatalogTests.swift

@@ -138,10 +138,6 @@ final class OfficialSkillCatalogTests: XCTestCase {
                 AIClipboardSkillCatalog.callPhoneID,
                 AIClipboardSkillCatalog.createContactID,
                 AIClipboardSkillCatalog.summarizeID,
-                AIClipboardSkillCatalog.declineInvitationID,
-                AIClipboardSkillCatalog.clarifyRequestID,
-                AIClipboardSkillCatalog.empathyReplyID,
-                AIClipboardSkillCatalog.blessingReplyID,
                 AIClipboardSkillCatalog.organizeListID,
                 "official.rewrite"
             ]