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

deploy/profile-scripts/candidate_filter.py

@@ -17,7 +17,9 @@ DB_PATH = Path("/home/hmo/MoFin/data/mofin.db")
 UA = "Mozilla/5.0"
 
 def get_conn():
-    return sqlite3.connect(str(DB_PATH))
+    c = sqlite3.connect(str(DB_PATH), timeout=30)
+    c.execute("PRAGMA busy_timeout=30000")
+    return c
 
 def log_candidate(conn, code, stage, passed, detail):
     """记录过滤日志"""

deploy/profile-scripts/promote_candidates.py

@@ -83,8 +83,8 @@ def main():
         reason_text.append(f"评分{score}")
         action = " | ".join(reason_text) if reason_text else f"市场扫描发现(评分{score})"
         
-        conn.execute("""
-            INSERT INTO holding_strategies 
+        cur = conn.execute("""
+            INSERT OR IGNORE INTO holding_strategies 
             (code, name, price, entry_low, entry_high, stop_loss, take_profit,
              timing_signal, action, decision_type, strategy_type, status,
              rr_ratio, stock_category, created_at, updated_at,
@@ -92,22 +92,27 @@ def main():
             VALUES (?,?,?,?,?,?,?,?,?,'自选策略','scan',
                     'active',0,'关注',?,?,'', 'pending')
         """, (code, name, 0, el, eh, sl, tp, timing_signal, action, now, now))
+        newly_added = cur.rowcount > 0
         
         conn.execute("UPDATE candidates SET promoted=1 WHERE code=?", (code,))
-        promoted += 1
-        print(f"  ✅ {code} {name} 评分{score} → 已加入自选({timing_signal})", flush=True)
+        if newly_added:
+            promoted += 1
+            print(f"  ✅ {code} {name} 评分{score} → 已加入自选({timing_signal})", flush=True)
+        else:
+            print(f"  ⏭ {code} {name} 已在自选策略中，标记promoted", flush=True)
         
-        # 触发全量重评（生成完整9维策略）
-        try:
-            import subprocess as _sp
-            r = _sp.run(["python3", "/home/hmo/MoFin/scripts/per_stock_reassess.py", code],
-                       capture_output=True, text=True, timeout=60)
-            if r.returncode == 0:
-                print(f"    重评完成", flush=True)
-            else:
-                print(f"    重评失败: {r.stderr.strip()[:100]}", flush=True)
-        except Exception as e:
-            print(f"    重评异常: {e}", flush=True)
+        # 触发全量重评（生成完整9维策略）——仅新插入的股票需要
+        if newly_added:
+            try:
+                import subprocess as _sp
+                r = _sp.run(["python3", "/home/hmo/MoFin/scripts/per_stock_reassess.py", code],
+                           capture_output=True, text=True, timeout=60)
+                if r.returncode == 0:
+                    print(f"    重评完成", flush=True)
+                else:
+                    print(f"    重评失败: {r.stderr.strip()[:100]}", flush=True)
+            except Exception as e:
+                print(f"    重评异常: {e}", flush=True)
     
     conn.commit()
     print(f"\n[PROMOTE] 本次提拔{promoted}只", flush=True)