feat(compare): 核对结果写入 logs/ 并为 114 增加开机计划任务

- compare.py: 新增 write_report()，每次运行把报告以日志形式写到
  logs/compare_<granularity>_<日期>.log（含生成时间 + 汇总头部），
  --report 仍兼容作为额外输出路径
- main.py: compare 子命令改用 write_report，默认落 logs/，stdout 仍打印
- run_compare_ids.cmd: 114 主机开机计划任务包装脚本（ID 级核对）

Co-Authored-By: WorkBuddy <workbuddy@tencent.com>

main.py

@@ -17,6 +17,7 @@ was launched or whether the venv already has ``src`` on its path.
 from __future__ import annotations
 
 import argparse
+import logging
 import os
 import sys
 
@@ -27,9 +28,10 @@ from sync.config import load_config
 from sync.logging_setup import setup_logging
 from sync.fullsync import full_sync
 from sync import service
-from sync.compare import compare, any_mismatch, format_report
+from sync.compare import compare, any_mismatch, format_report, write_report
 
 CONFIG_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), "config.yaml")
+log = logging.getLogger("main")
 
 
 def _parse_args(argv):
@@ -99,11 +101,14 @@ def main(argv=None) -> int:
     if args.command == "compare":
         results = compare(cfg, granularity=args.granularity,
                           db_filter=args.db, table_filter=args.table)
-        report = format_report(results, args.granularity)
-        print(report)
-        if args.report:
-            with open(args.report, "w", encoding="utf-8") as f:
-                f.write(report + "\n")
+        # Persist the report as a dated log file under the logging directory
+        # (logs/ by default); --report still allows an extra custom path.
+        log_dir = os.path.dirname((cfg.logging or {}).get("path", "sync.log")) or "."
+        written = write_report(results, args.granularity, log_dir=log_dir,
+                               extra_path=args.report)
+        print(format_report(results, args.granularity))
+        log.info("compare finished (granularity=%s) report=%s mismatch=%s",
+                 args.granularity, written, any_mismatch(results))
         return 1 if any_mismatch(results) else 0
 
     return 2  # unreachable: argparse requires a subcommand