feat: local LLM multi-model, session search, cron proactive types, notifications, docs overhaul

Local LLM:
- user_settings.py: per-user hosts/models config (local_llm.json)
- routers/local_llm.py + static/local_llm.html: dedicated settings page
- llm_client.py: local OpenAI-compatible backend via httpx
- config.py: LOCAL_API_URL/KEY/MODEL + per-backend timeouts
- Active model shown near backend toggle (amber hint text)

Memory distillation:
- memory_distiller.py: DISTILL_BACKEND_MID/LONG .env overrides
- scheduler.py + notification.py: notify NC Talk after mid/long distill
- notification.py: outbound channel abstraction (NC Talk, extensible)

Session search:
- routers/files.py: GET /sessions/search?q= with excerpts grouped by date
- static/index.html + app.js: search UI in file sidebar with highlight
- _esc() helper to prevent XSS in search results

Proactive cron:
- cron_runner.py: new job types — message (send directly) and brief (LLM + send)
- Both support optional per-job channel override

Channels:
- routers/nextcloud_talk.py: consolidated using notification._send_nct_message()
- routers/auth.py: local backend status in /auth/status
- routers/chat.py: /backend returns {primary, fallback, local_model} object

UI / UX:
- Copy button for user messages (matching assistant)
- Autocomplete disabled on sensitive form fields
- settings.html: local model section replaced with link to /settings/local

Docs overhaul:
- MASTER.md hub + ARCH__SYSTEM/BACKENDS/PERSONA/CHANNELS/FUTURE.md
- ARCH__Intelligence_Layer.md replaced with redirect table
- CORTEX.md trimmed to vision only; README updated
- OPEN_WEBUI_API.md added to docs/

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -73,39 +73,45 @@ Config lives in `cortex/config.py` and `cortex/.env` (not tracked — see `corte
 
 ## Key Documentation
 
+**Start here for a full picture:** [`documentation/MASTER.md`](documentation/MASTER.md)
+
 | File | Purpose |
 |---|---|
-| `documentation/TODO__Agents.md` | Active task list — read first |
-| `documentation/ARCH__Intelligence_Layer.md` | Intelligence layer architecture (orchestrator, dev agents, knowledge) |
+| `documentation/MASTER.md` | Index — current state, all doc links, quick reference |
+| `documentation/ROADMAP.md` | Phases — what's done, what's next |
+| `documentation/TODO__Agents.md` | Active task list |
+| `documentation/ARCH__SYSTEM.md` | System architecture and component map |
+| `documentation/ARCH__BACKENDS.md` | LLM backends, routing, fallback |
+| `documentation/ARCH__PERSONA.md` | Persona system, context tiers, memory distillation |
+| `documentation/ARCH__CHANNELS.md` | Input channels — web, NC Talk, Google Chat, cron |
+| `documentation/ARCH__FUTURE.md` | Planned features — local orchestrator, dev agents, knowledge layer |
 | `docs/NEXTCLOUD_TALK_BOT.md` | NC Talk bot setup and troubleshooting |
-| `docs/GOOGLE_CHAT_BOT.md` | Google Chat Add-on setup and troubleshooting |
-| `cortex/static/HELP.md` | Shared in-app help content (rendered in UI for all users) |
-| `home/scott/persona/inara/PROTOCOLS.md` | Inara behavioral protocols (template for all personas) |
-| `~/agents_sync/projects/CORTEX.md` | High-level project vision and phases |
+| `docs/GOOGLE_CHAT_BOT.md` | Google Chat Add-on setup |
+| `docs/OPEN_WEBUI_API.md` | Open WebUI/Ollama API reference |
 
 ---
 
 ## Architecture at a Glance
 
 ```
-[User / Cron / Webhook]
+[Web UI / NC Talk / Google Chat / Cron / Webhooks]
         ↓
   Cortex Dispatcher  (FastAPI, cortex/)
-    ├─ POST /chat                          — direct to LLM (streaming SSE)
-    ├─ POST /orchestrate                   — Gemini tool loop → Claude response
-    ├─ POST /webhook/nextcloud/{username}  — Nextcloud Talk bot (per-user)
+    ├─ POST /chat                            — direct to LLM (streaming SSE)
+    ├─ POST /orchestrate                     — Gemini tool loop → Claude response
+    ├─ POST /webhook/nextcloud/{username}    — Nextcloud Talk bot (per-user)
     └─ POST /channels/google-chat/{username} — Google Chat Add-on (per-user)
         ↓
-  LLM Backend(s)
-  • Claude CLI   — primary reasoning, coding, long-context
-  • Gemini CLI   — secondary / cost routing
-  • Gemini API   — orchestrator tool loop (separate from Gemini CLI)
-  • Ollama       — offline/private (scott_gaming, future)
+  LLM Backends
+  • Claude CLI   — primary, all user-facing responses
+  • Gemini CLI   — fallback
+  • Gemini API   — orchestrator tool loop only (not general chat)
+  • Local        — Open WebUI/Ollama on scott_gaming (private/offline)
         ↓
   Persona context loaded from home/{user}/persona/{name}/
 ```
 
-See `documentation/ARCH__Intelligence_Layer.md` for the orchestrator/responder and dev-agent architecture.
+See `documentation/ARCH__SYSTEM.md` for the full architecture breakdown.
 
 ---