Adds PostToolUse hook that reads context metrics from statusline bridge file and injects alerts into agent conversation when context is low. Features: - Two-tier alerts: WARNING (<=35% remaining) and CRITICAL (<=25%) - Smart debounce: 5 tool uses between warnings, severity escalation bypasses - Silent fail: never blocks tool execution - Security: session_id sanitized to prevent path traversal Ref #212
952 B
952 B