- Added HubStateStore targeted delta update methods (apply_delta_quota_updated, apply_delta_account_added, apply_delta_account_removed, apply_delta_route_changed)
- Added seq sequence freshness tracking in HubStateStore to drop stale out-of-order responses
- Added trigger_refresh_provider in HermesRefreshScheduler
- Bound multi-bucket quotas to specific model families (Claude vs Gemini) with truthful is_estimated tracking
- Connected OAuth completion to targeted account added events across all providers
- Pinned antigravity_provider package root to repo via __init__.py and added import invariant verification
- Added unit tests in tests/test_state_layer_and_event_driven_quota.py and tests/test_import_invariants.py
- Zero modifications to UI zone files (views, components, theme, wizard, hermes_hub_app.py)
- Implemented 3-tier release feed status (MANIFEST_LIVE, PACKAGE_LIVE, PACKAGE_HASH_VERIFIED)
- Added reproducible package and checksum builder in scripts/build_dist.py
- Preserved user header comments across YAML saves in router_config.py
- Connected model_timeout_seconds, monitoring_interval_seconds, and auto_monitoring to runtime
- Guarded global gemini:antigravity credential swap with _AGY_INVOCATION_LOCK to eliminate concurrent subprocess race
- Added concurrency regression test in tests/test_antigravity_concurrency.py
- Added interprocess file locking (_FileLock) for router_state.json in health_tracker.py
- Sandboxed APPDATA and USERPROFILE in tests/test_installer.py
- Exported roadmap modules in router/__init__.py
- Verified 151 passing tests (100%) and 7/7 release gate checks
- Implemented HubSnapshot and central HubStateStore for normalized in-memory state caching (<0.05ms)
- Refactored AccountsView and RoutingView with reusable AccountCardWidget and RoutingRoleWidget to eliminate widget recreation
- Implemented central HermesRefreshScheduler with 5s tick, concurrency throttling, dedup, and spread initial delays
- Added typed EventBus with thread-safe UI main loop dispatching via root.after
- Implemented dynamic ModelRegistry with capability-based role requirements and multi-dimensional scoring
- Integrated Antigravity separate quota buckets (Claude vs Gemini) and same-account model fallback
- Enhanced SessionAffinityTracker with TTL expiration and LRU capacity bounds
- Eliminated long subprocess holding of _CM_LOCK and ensured Windows credential restoration in finally block
- Added FastAPI REST contracts in gui_server.py as foundation for future Tauri frontend
- Verified 100% pass across all 91 pytest tests and 7/7 release gate criteria
