fix(pipelines): clear today's real cron errors + kill monitoring false alarms

Real errors fixed (all verified by manual run):
- price_monitor.py: shares None -> TypeError at L584 (now completes 3m7s,
  full 39-stock reassess + zone triggers + Dad push)
- market_insight.py: net_inflow None -> TypeError at L142 (now 0.3s, 5 insights)
- promote_candidates.py: add busy_timeout=30s (DB lock under concurrent writes)
- premarket_full_review.py: 12-dim analysis now detached background launch
  (was doomed by cron 120s script timeout no matter what)

Systemic:
- HERMES_CRON_SCRIPT_TIMEOUT=600 drop-in for both gateway services
  (fixes mofin_health SIGTERM, market_watch timeout, memory_guardian timeout)
- sync_profile_scripts.sh: re-hardlink deploy->profile scripts after every
  deploy (scp replaces files = new inode = broken hardlink = cron silently
  runs stale code; this caused promote to keep failing after my first fix)

Monitoring false-alarm fixes (the '花瓶' problem):
- mofin_health.py: legacy JSONs that migrated to DB (multi_tf_cache/
  macro_context/market/live_prices/price_history/macro_risk_state) no longer
  warn 'no readers'; marked as migrated
- NEW db_freshness section: real pipeline health from DB tables
  (mtf_cache 0.4h / macro_context_log 2h / market_snapshots 2h /
  live_prices 0.4h / price_events.json 0.4h — ALL HEALTHY)
- price_events freshness reads live JSON store (DB table is legacy)
- market.json placeholder created (13+ scripts have fallback paths)

Investigation notes: wiki-self-growth 03:04 key1 429 predates full key6
activation on default gateway; current 8642 verified on key6 and working.
Weekend 'Blocked' jobs verified fixed (vacuum_state_db passes).

scripts/full_error_inventory.py

@@ -0,0 +1,29 @@
+import json, os
+from datetime import datetime, timezone
+
+now = datetime.now(timezone.utc)
+out = []
+for jf, prof in [('/home/hmo/.hermes/profiles/position-analyst/cron/jobs.json', 'pa'),
+                 ('/home/hmo/.hermes/cron/jobs.json', 'default')]:
+    d = json.load(open(jf))
+    jobs = d if isinstance(d, list) else d.get('jobs', [])
+    for j in jobs:
+        st = j.get('last_status')
+        en = j.get('enabled', True)
+        if st == 'error' or not en:
+            lr = str(j.get('last_run_at') or '?')[:19]
+            err = str(j.get('last_error') or '')[:300].replace('\n', ' | ')
+            out.append({
+                'profile': prof, 'name': j.get('name'), 'script': j.get('script'),
+                'no_agent': j.get('no_agent'), 'status': st, 'enabled': en,
+                'last_run': lr, 'schedule': j.get('schedule_display') or str(j.get('schedule')),
+                'error': err,
+            })
+
+print(f"TOTAL problem jobs: {len(out)}\n")
+for o in out:
+    flag = 'DISABLED' if not o['enabled'] else 'ERROR'
+    print(f"[{flag}] ({o['profile']}) {o['name']}")
+    print(f"  script={o['script']} no_agent={o['no_agent']} sched={o['schedule']} last={o['last_run']}")
+    print(f"  err: {o['error'][:250]}")
+    print()