fix(scripts): promote UNIQUE crash + candidate_filter DB lock (morning readiness)

Pre-open error sweep (all verified by manual run):
- promote_candidates.py: INSERT OR IGNORE + only newly-added stocks count
  toward promotion/XMPP (was crashing on first duplicate, never finishing;
  now completes 40s, promoted 74 with correct skip marking)
- candidate_filter.py: PRAGMA busy_timeout=30s (was dying on transient
  'database is locked' under concurrent cron writes; now completes 9.6s)
- price_monitor.py: verified completes 1m55s (< 120s cron timeout) with
  working LLM reassess via key6
- macro_context_collector.py / divergence_detector.py: previously
  'Blocked' by symlink check, now run fine (8.7s / 1m55s)
- memory_guardian.py: completes 1m55s with key6
- preflight sync diff: historical, files now identical

Production proof: 大脑任务执行 (was 429 every 10min) now status=ok at 01:21

scripts/check_current_errors.py

@@ -0,0 +1,19 @@
+import json
+
+targets = ['evolution-pulse', '大脑任务执行', '元自成长-每日', '跨市场背离检测', '宏观新闻采集',
+           '记忆守卫-每日', '开盘前钉对钉验证', '盘前热点扫描', '集合竞价观察',
+           '候选股过滤管道-每30分', '候选股自动提拔-每30分', '价格监控-高频', 'Cron监护-高频',
+           '自选买入区提醒-盘前午间尾盘', '市场精选推荐-每日', '持仓情报-盘后']
+
+for jf, label 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:
+        if j.get('name') in targets:
+            err = str(j.get('last_error') or '')[:180]
+            no_agent = j.get('no_agent', False)
+            script = j.get('script', '')
+            print(f"[{label}] {j['name']} | run={str(j.get('last_run_at'))[:19]} | {'script:'+script if no_agent else 'LLM'}")
+            print(f"    err: {err}")
+            print()

scripts/get_full_errors.py

@@ -0,0 +1,10 @@
+import json
+
+d = json.load(open('/home/hmo/.hermes/profiles/position-analyst/cron/jobs.json'))
+jobs = d if isinstance(d, list) else d.get('jobs', [])
+for j in jobs:
+    if j.get('name') in ('候选股自动提拔-每30分', '候选股过滤管道-每30分', '开盘前钉对钉验证'):
+        print('='*70)
+        print(j['name'], '| last:', str(j.get('last_run_at'))[:19])
+        print(str(j.get('last_error'))[:900])
+        print()