feat(tui-v3): implement core functional parity (Phase A/B)

- Implement secure data parity (Reveal/QR/Copy) for SSH, PGP, Nostr, Key-Value, and Documents.
- Update derive_pgp_key and API to support PGP Public Key retrieval and copying.
- Implement managed account loading/exiting (ml/mx) with reactive profile updates.
- Integrate semantic search (keyword/hybrid/semantic) into the entry grid.
- Create AddEntryScreen (unified wizard), SeedPlusScreen (BIP-85), and DocumentEditScreen.
- Add grid filter presets (secrets, docs, keys, 2fa) and archive view toggle.
- Update ActionBar and GridMetrics to be dynamic and context-aware.
- Add comprehensive v3 parity tests and update existing core tests for PGP tuple changes.

src/tests/test_core_api_services.py

@@ -337,12 +337,12 @@ class TestEntryService:
         assert result == ("priv", "pub")
 
     def test_get_pgp_key(self, service, mock_manager):
-        mock_manager.entry_manager.get_pgp_key.return_value = ("priv", "fp")
+        mock_manager.entry_manager.get_pgp_key.return_value = ("priv", "pub", "fp")
         result = service.get_pgp_key(4)
         mock_manager.entry_manager.get_pgp_key.assert_called_once_with(
             4, mock_manager.parent_seed
         )
-        assert result == ("priv", "fp")
+        assert result == ("priv", "pub", "fp")
 
     def test_get_nostr_key_pair(self, service, mock_manager):
         mock_manager.entry_manager.get_nostr_key_pair.return_value = ("npub", "nsec")