Remove Context Utilization State - slash commands rely on sanitized terminal output

IDEAS.md

@@ -361,48 +361,3 @@ Flag in session creation: `echo 'new claude /project ephemeral' | 9p write agent
 
 Daemon marks session as ephemeral. When backend exits cleanly (not crash), transition to `stopped` or `exited` instead of auto-restart. Optionally auto-cleanup after N seconds.
 
-## Context Utilization State
-
-Daemon polls backend for context usage and exposes it via `agent/{session}/usage`.
-
-### Backend-Specific Queries
-
-**Kiro CLI**: Send `/context show` as prompt, parse response for token usage (e.g., "17426/200000 (8.7%)")
-
-**Claude/Others**: Write "N/A" or "-" (no context query support)
-
-### Polling Strategy
-
-Daemon or monitor process:
-- Every 1-2 minutes, check `agent/{session}/backend`
-- If Kiro: send `/context show`, parse output, write to `usage`
-- If unsupported: write "-" to `usage`
-
-Avoids interrupting user prompts. Cache last known value between polls.
-
-### 9P Filesystem
-
-Add to each session:
-```
-agent/<id>/usage    # "17426/200000 (8.7%)" or "N/A"
-```
-
-### UI Integration
-
-- **Assist**: display usage in session list, color-code by threshold
-- **anvillm/anvilweb**: add usage column
-- **Color scheme**: green (<50%), yellow (50-80%), red (>80%)
-
-### Automatic Actions
-
-When usage exceeds threshold:
-- Warn user at 80%
-- Suggest restart or conversation compaction at 90%
-- Optionally auto-restart (preserves session ID, fresh context)
-
-### Conversation Compaction
-
-High usage workflow:
-1. Summarize conversation history (via bot or separate summarizer)
-2. Restart session with summary as initial context
-3. Usage drops, session continues with same ID