refactor(skills): cleanup dead code + full workflow A→B→C→D integration

Cleanup:
- Remove unused validate_yaml() helper from lib.sh
- Remove USER_MANUAL.html + mqtt-broker-setup.html (no refs found)

Workflow A (create_session ↔ delegate-job):
- Add --submit-job <prompt> option to create_session.sh
- Auto-register session in delegate-job registry, store delegate_job_id in YAML

Workflow B (push-based monitor):
- Migrate reconcile.sh to MQTT subscriber mode (polling fallback preserved)

Workflow C (unified status):
- status.sh now shows session + delegate-job state in single column

Workflow D (audit log + perms):
- JSON job files chmod 600
- create/delete/resume now publish lifecycle events to delegate-job

skills/multi-agent-delete/scripts/delete_session.sh

@@ -61,15 +61,17 @@ if [ -z "$AGENT" ]; then
   esac
 fi
 
-# 세션이 YAML 에 있는지 + 해당 row 의 워크스페이스 cwd 추출
-TARGET_CWD=$(env_python "$AGENT_SESSIONS_YAML" SESSION_NAME="$SESSION_NAME" <<'PYEOF'
+# 세션이 YAML 에 있는지 + 해당 row 의 워크스페이스 cwd 및 delegate_job_id 추출
+MAPPED_DATA=$(env_python "$AGENT_SESSIONS_YAML" SESSION_NAME="$SESSION_NAME" <<'PYEOF'
 import os, yaml
 name = os.environ['SESSION_NAME']
 with open(os.environ['YAML_PATH']) as f:
     d = yaml.safe_load(f) or {}
 for s in d.get('tmux_sessions', []):
     if s.get('name') == name:
-        print((s.get('pane') or {}).get('cwd', ''))
+        cwd = (s.get('pane') or {}).get('cwd', '')
+        jid = s.get('delegate_job_id', '') or ''
+        print(f"{cwd}|{jid}")
         raise SystemExit(0)
 raise SystemExit(7)
 PYEOF
@@ -78,6 +80,9 @@ PYEOF
   exit 1
 }
 
+TARGET_CWD="${MAPPED_DATA%|*}"
+DELEGATE_JOB_ID="${MAPPED_DATA#*|}"
+
 # purge 확인
 if [ "$PURGE" = "1" ] && [ "$YES" != "1" ]; then
   echo "DANGER: --purge-conversation will DELETE this workspace's on-disk conversation."
@@ -104,6 +109,20 @@ if tmux has-session -t "$SESSION_NAME" 2>/dev/null; then
   LAST_STATUS=$(tmux capture-pane -t "$SESSION_NAME" -p -S -10 2>/dev/null | tr '\n' ' ' | head -c 500 || true)
 fi
 
+if [ -n "$DELEGATE_JOB_ID" ]; then
+  py_bin="python3"
+  d_dir="$(dirname "${BASH_SOURCE[0]}")"
+  while [ "$d_dir" != "/" ] && [ -n "$d_dir" ]; do
+    if [ -x "$d_dir/.venv/bin/python" ]; then
+      py_bin="$d_dir/.venv/bin/python"
+      break
+    fi
+    d_dir="$(dirname "$d_dir")"
+  done
+  pub_script="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)/delegate-job/scripts/publish_event.py"
+  "$py_bin" "$pub_script" --job "$DELEGATE_JOB_ID" --event progress --detail "terminating" || true
+fi
+
 # hard 모드면 tmux 죽임
 if [ "$MODE" = "hard" ] && [ "$TMUX_ALIVE" = "1" ]; then
   tmux kill-session -t "$SESSION_NAME"
@@ -187,6 +206,20 @@ elif purge and not purge_uuid:
 print(f"updated: {name} status={target['status']}", flush=True)
 PYEOF
 
+if [ -n "$DELEGATE_JOB_ID" ]; then
+  py_bin="python3"
+  d_dir="$(dirname "${BASH_SOURCE[0]}")"
+  while [ "$d_dir" != "/" ] && [ -n "$d_dir" ]; do
+    if [ -x "$d_dir/.venv/bin/python" ]; then
+      py_bin="$d_dir/.venv/bin/python"
+      break
+    fi
+    d_dir="$(dirname "$d_dir")"
+  done
+  pub_script="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)/delegate-job/scripts/publish_event.py"
+  "$py_bin" "$pub_script" --job "$DELEGATE_JOB_ID" --event completed --detail "session terminated" || true
+fi
+
 echo
 echo "=== delete complete ==="
 echo "  session:  $SESSION_NAME"