feat(session): maintain canonical task state

shared/hooks/scripts/record-compact.sh

@@ -3,3 +3,4 @@ set -euo pipefail
 root=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/../.." && pwd)
 mkdir -p "$root/.ai-session"
 printf '{"event":"compact","timestamp":"%s"}\n' "$(date -u +%Y-%m-%dT%H:%M:%SZ)" >> "$root/.ai-session/telemetry.jsonl"
+python3 "$root/hooks/scripts/session-state.py" --hook