refactor: remove duplicate scripts + JSON constants + update docs

scripts/branch_scanner.py

@@ -20,7 +20,6 @@ from urllib.request import Request, urlopen
 from mo_data import read_decisions
 from mofin_db import get_conn, write_holding_strategy
 
-DECISIONS_PATH = "/home/hmo/web-dashboard/data/decisions.json"
 SCANNER_STATE = "/home/hmo/web-dashboard/data/scanner_state.json"
 
 
@@ -110,10 +109,6 @@ def main():
         conn.close()
     except Exception:
         pass
-    # [migrated to DB] — cold backup removed
-    # with open(DECISIONS_PATH, "w") as f:
-    #     json.dump(data, f, indent=2, ensure_ascii=False)
-
     # 更新状态快照
     state = {"scenario": sid, "updated_at": now.isoformat(), "branches": {}}
     for e in decisions: