Add NAVI_AUTH_ENABLED switch for optional auth ...

- Add navi_auth_enabled setting (default true) to navi/config.py and .env.example
- When disabled, treat every request as anonymous admin user (id='anonymous')
- Create/update fixed anonymous navi_users row on startup
- Bypass OAuth/cookie/API-token resolution in navi/auth/deps.py
- Update /auth/status to return {enabled, configured}
- Log security warning on startup when auth is disabled
- Update webclient: skip fetchMe/login screen, show Local mode footer,
  expose /admin link, warn in API keys panel
- Rebuild webclient production bundle
- Add unit and integration tests for no-auth mode
- Update docs: auth.md, config.md, api.md, api_tokens.md, sessions.md,
  websocket.md, mechanics.md, index.md

Co-Authored-By: Claude <noreply@anthropic.com>

Remove offline_access from OAuth scopes ...

gnexus-auth does not support offline_access yet (SUPPORTED scopes are
only openid, email, profile, roles, permissions). Requesting it caused
invalid_scope error and login failures.

Keep refresh token support as-is — tokens are still issued and
refreshed, just bound to the SSO session lifetime.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Fix OAuth callback to handle missing code and error responses ...

FastAPI validated code/state as required query params before the
handler body ran, so any OAuth error response (e.g. invalid_scope
from offline_access, user denied consent) produced an opaque 422
"Field required" instead of a readable error message.

- Make code, state, error, error_description all optional with defaults
- Detect OAuth error responses and return a clear 400 with the error
- Guard state[:8] slicing when state may be None

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Fix frequent OAuth logouts: offline_access scope, transient error handling, fetchMe resilience ...

- Add 'offline_access' to OAuth scopes so gnexus-auth issues offline
  refresh tokens instead of SSO-session-bound ones.
- Distinguish TokenRefreshException (invalid/expired refresh token)
  from transient network errors during token refresh:
  * TokenRefreshException → logout (token genuinely dead)
  * Other exceptions → fallback to cached user or API token
- Improve refresh failure logging with exc_type and error message.
- Frontend fetchMe: swallow non-401 errors so transient 5xx/network
  failures don't flash the login screen.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Fix 19 issues found in full codebase review ...

Backend:
- Stop session auth bypass: require auth for owned sessions, reject anonymous with 401
- upload_file: stream chunks directly to disk instead of buffering in RAM
- MCP config: validate name against path traversal regex
- auth deps: cleanup stale refresh locks periodically
- auth routes: expire mobile auth states after 10 min to prevent unbounded growth
- compressor: meta-summarize existing summaries before compression; preserve assistant content when tool_calls present; rewrite hard_truncate to keep whole turns
- orchestrator: configurable WS replay buffer size; async cleanup/remove_websocket/clear_busy; fix run_recall ContextVar order to avoid deadlock on _build_agent failure; await cleanup in finally
- agent: persist image_msg in session.messages; remove archived messages from session after archive; remove duplicate StreamStopped yield on tool stop
- websocket: try/except around create_task with cleanup on failure; await remove_websocket

Frontend:
- App.vue: hashchange listener lifecycle in onMounted/onUnmounted
- MessageList.vue: passive scroll, flash timeout cleanup, archive scroll snapshot
- InputBar.vue: 300 ms debounce on draft save to localStorage
- SessionList.vue: remove :key from DynamicScroller to avoid remount jitter

Tests: 422 passed, 1 skipped

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Style OAuth bridge page with gnexus UI kit design system ...

Redesigned /auth/mobile-done to match the Navi webclient visual
language (Tokyo Night cyberpunk palette):
- Dark background (#16161E), muted panel with green success accent
- Squared corners, uppercase headings, wide letter-spacing
- Spinner during auto-redirect, fallback button with left accent border
- Full hover states matching .btn-success from the kit

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Detect Android OAuth client via User-Agent header ...

WebView always sends NaviAndroid/1.0 in the HTTP User-Agent, while
navigator.userAgent in JS is unreliable. Backend now detects the
Android platform from the UA header when the ?platform query param is
absent, ensuring the bridge-page flow works regardless of webclient
version.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Improve OAuth bridge page with Chrome Intent URL + fallback button ...

/auth/mobile-done now tries Chrome Intent URL for automatic app
opening, and falls back to a styled button if the browser blocks
automatic navigation to custom schemes.

- Auto-redirect: intent://...#Intent;scheme=navi;package=com.navi.client;end
- Fallback UI: card with \"Open Navi App\" button after 1.5s timeout
- Works in both Chrome (auto) and DuckDuckGo (manual tap)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add Android deep-link OAuth bridge for WebView auth ...

Problem: Android WebView opens OAuth in external browser (Chrome).
After successful login, cookie stays in Chrome and WebView remains
unauthenticated because cookies are not shared between apps.

Solution: bridge page flow that avoids cookies entirely for mobile.

Backend:
- /auth/login accepts ?platform=android and ?return_to params
- /auth/callback detects android via state metadata, skips cookie,
  redirects to /auth/mobile-done?sid=<session_id>
- /auth/mobile-done renders HTML that deep-links to navi://auth/callback

Webclient:
- login() detects NaviAndroid UA and adds ?platform=android

Android:
- MainActivity: handle incoming navi:// intent in onCreate and onNewIntent,
  set cookie via CookieManager, reload WebView
- AndroidManifest: add intent-filter for navi://auth/callback and
  singleTask launchMode

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Propagate user profile to LLM context via current_user_info ContextVar ...

- Extend User model: username, first_name, last_name, phone, birth_date,
  country, city, locale (all from gnexus-auth profile)
- navi_users DDL: add new profile columns
- auth/deps + auth/callback: populate new fields on upsert
- /auth/me: return all profile fields
- Add current_user_info ContextVar for full user profile propagation
- websocket + messages: set current_user_info before agent.run()
- run_ephemeral: inherit and restore current_user_info
- ContextBuilder: _user_context_msg() injects [User context] with name,
  email, location, locale, role into LLM system messages
- _security_policy_msg: reads user_id/role from ContextVar directly

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Use configured GNAUTH_REDIRECT_URI instead of dynamic base_url ...

_get_redirect_uri was building the redirect_uri from request.base_url,
which returns the internal address when behind a reverse proxy. This
caused gnexus-auth to reject the redirect_uri as invalid.

Now _get_redirect_uri always returns settings.gnauth_redirect_uri,
so the public URL configured in .env is used consistently.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add full-screen login overlay for unauthenticated users ...

- Backend: new endpoint GET /auth/status returns {configured: bool}
- Webclient auth store: add authConfigured ref + fetchStatus()
- LoginScreen.vue: centered card with logo, title, and login button
- App.vue: show LoginScreen overlay when auth is configured but
  user is not authenticated (z-index 9999, blocks all UI)
- App.vue onMounted: fetch auth status before trying to resolve user

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add avatar display and gnexus-auth profile link ...

Backend:
- User model: add avatar_url field
- auth/deps.py: extract avatar_url from auth_user.profile (picture/avatar_url)
- auth.py /auth/me: return avatar_url + computed profile_url
- config.py: add gnauth_profile_path setting
- .env.example: document GNAUTH_PROFILE_PATH

Frontend:
- AppSidebar.vue: show user avatar (or initial fallback) next to name
- Clicking user info opens gnexus-auth profile in new tab
- Rebuild dist/

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Revert "Force login prompt in gnexus-auth OAuth flow" ...

This reverts commit f232f21.

Force login prompt in gnexus-auth OAuth flow ...

Add prompt=login to authorization URL so gnexus-auth always shows the
login form instead of silently re-authenticating via existing session.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Fix missing Annotated/Depends imports in auth.py and UI button class ...

- auth.py: add from typing import Annotated and from fastapi import Depends
  to fix 422 Unprocessable Content on /auth/me and /auth/logout
- AppSidebar.vue: replace btn-ghost with btn-primary for login/logout buttons

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Fix pydantic-settings env var name mapping for auth ...

Pydantic-settings converts snake_case field names to UPPER_CASE env vars
by removing underscores.  gnexus_auth_client_id became GNEXUS_AUTH_CLIENT_ID
but .env used GNAUTH_CLIENT_ID.  Rename all Settings fields from
 gnexus_auth_* to gnauth_* so they map correctly to GNAUTH_* env vars.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Add graceful auth-not-configured guards ...

- auth_login/auth_callback return 503 when GNAUTH_CLIENT_ID/SECRET are empty
- webhooks return 503 when OAuth not configured
- _resolve_user returns None early if auth not configured, avoiding crash
  during anonymous requests when gnexus-auth is not set up

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Support dynamic redirect_uri for multi-domain OAuth ...

- get_gauth_client(redirect_uri=...) creates per-request client with
  dynamic redirect_uri while keeping shared state/PKCE stores
- auth_login/auth_callback derive redirect_uri from request.base_url
  so both localhost and server addresses work with one gnexus-auth client

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Multi-user auth via gnexus-auth OAuth + hybrid role/permission model ...

- Integrate gnexus-auth-client-py (GAuthClient) for OAuth flow, token refresh,
  and webhook parsing
- Add navi/auth/ package: User model, Fernet encryptor, client singleton,
  deps (get_current_user, require_admin, require_permission)
- New tables: navi_users, user_auth_sessions (auto-created on startup)
- Session/memory isolation by user_id with legacy NULL support
- Cookie-based auth proxy: /auth/login, /callback, /logout, /me
- Webhook receiver /webhooks/gnexus-auth handling user events, global logout,
  session revocation, role/permission changes
- Admin endpoints (/admin/*) gated by role + permissions
- Webclient auth store with isAdmin/hasPermission guards
- Admin-only profile filtering in /agents/profiles
- 200/200 tests passing

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>