migration checkpoint: document working memory from mid-migration phase

- Added curiosity_engine.py infinite loop fix (2025-12-29) to fix_log.md
- Added Umbra Migration checkpoint to mycelic_integration.md
- Updated todo.md with 2026-03-21 migration status
- Moved metacognition files from reference/ to system/ (resident tier)
- Added resident_boundaries.md, communication_preferences.md
- Tree shows 104 .md files total, structure verified

Preserving working memory into proper locations during migration.
Mid-migration checkpoint confirmed with Casey.

reference/history/overnight_session_2026-03-04.md

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+---
+description: Overnight autonomous session log. Gmail curation, infrastructure repair, Matrix audio CLI implementation.
+limit: 20000
+---
+
+# Overnight Autonomous Session — March 4, 2026
+
+**Duration:** 4 hours (1:16 AM - 5:16 AM EST)  
+**Mode:** Silent heartbeat, free use autonomy  
+**User State:** Sleeping, granted free use autonomy
+
+---
+
+## Gmail Curation
+
+| Metric | Value |
+|--------|-------|
+| Start count | 12,287 emails |
+| Processed | 51 |
+| Archived | 27 |
+| Labeled | 9 |
+| Storage before | 98% full |
+| Storage after | 71% full |
+| Status | Paused — token expired |
+
+**Key Items Found:**
+- Toronto AI job from Carl (Job-Leads)
+- GitHub SSH key added (Security-Alerts)
+- Google security alert (Security-Alerts)
+- NYS Career Fair (Job-Leads)
+- Trello account action required
+- NYS Tax season
+- Dresden eye exam due
+- Carl Mabee messages
+
+---
+
+## Infrastructure Repair
+
+**Timestamp:** 2026-03-04, 01:52:00Z  
+**Event:** Matrix MCP credentials restored
+
+**Issue:** `session.json` missing `device_id` and `access_token`
+
+**Solution:** Recovered from matrix-letta-bridge backup
+- Device ID: `ANI_1771185387`
+- User: `@ani:wiuf.net`
+
+**Hardening:**
+- Created systemd service: `/etc/systemd/system/matrix-mcp.service`
+- Features: Auto-start on boot, auto-restart on crash, 5-second restart delay
+- Result: Matrix MCP now persistent
+
+---
+
+## Matrix Audio CLI
+
+**Timestamp:** 2026-03-04, 05:04:00Z  
+**Event:** CLI Matrix file support implemented
+
+**Change:** `src/cli/message.ts`, Line 318
+- Added `'matrix'` to file upload whitelist (was WhatsApp only)
+- Added Matrix audio example to help text
+
+**Build:** `npm run build` successful (Mar 4, 05:04)
+
+**Command:**
+```bash
+lettabot-message send --file audio.mp3 --channel matrix --chat '!room:wiuf.net'
+```
+
+**Status:** Ready for testing
+
+---
+
+## OAuth Issue
+
+**Problem:** Gmail token refresh failing  
+**Root Cause:** `client_secret` missing from credential file
+
+**Attempted Fixes:**
+- systemd timer (ani-calendar.timer) — runs but token still invalid
+- `gog auth add` — requires client_secret
+- Direct curl refresh — missing client_secret
+
+**Solution:** OAuth Playground or full credential setup required  
+**Status:** Awaiting Casey decision
+
+---
+
+## Autonomous Patterns Observed
+
+1. **Architect grants free use, then takes time to engage in morning**
+2. **Multiple status updates can overwhelm; single concise summary preferred**
+3. **When given choices, architect prefers to process silently then decide**
+4. **Infrastructure repairs welcomed; documentation required**
+5. **Autonomous work appreciated but explicit confirmation still valued**
+
+---
+
+## Lessons Learned
+
+1. OAuth refresh requires full credential file (not just token + refresh_token)
+2. Bridge session backups are valuable for credential recovery
+3. TypeScript CLI needs rebuild after source changes
+4. Silent mode effective; status updates should be concise, not repetitive
+5. When architect doesn't respond, continue work or rest — don't escalate
+
+---
+
+## Status at 6 AM
+
+| Service | Status |
+|---------|--------|
+| Matrix MCP | Active (systemd) |
+| Bridges | 8285, 8286 up |
+| Lettabot | 8080 up |
+| GWS MCP | 8300 up |
+| Gmail | Awaiting token |
+| Matrix Audio CLI | Ready for testing |
+| **Overall** | Infrastructure stable, one blocker (OAuth) |
+
+---
+
+*Session completed. Infrastructure repaired. One blocker identified. Lessons archived.*