feat: M6 context intelligence — token tracker + truncation compaction
internal/context/:
- Tracker: monitors token usage with OK/Warning/Critical states
(thresholds from CC: 20K warning buffer, 13K autocompact buffer)
- TruncateStrategy: drops oldest messages, preserves system prompt +
recent N turns, adds compaction boundary marker
- Window: manages message history with auto-compaction trigger,
circuit breaker after 3 consecutive failures
Engine integration:
- Context window tracks usage per turn
- Auto-compacts when critical threshold reached
- History syncs with context window after compaction
TUI status bar:
- Token count with percentage (tokens: 1234 (5%))
- Color-coded: green=ok, yellow=warning, red=critical
Session Status extended: TokensMax, TokenPercent, TokenState.
7 context tests.
vikingowl
b0b393517e