feat: add standard init-db CLI for host install schema ensure

scripts/service/task_service.py

@@ -26,8 +26,9 @@ from service.task_run_support import (
 )
 from util.constants import LOG_LOGGER_NAME, PLATFORM_KIT_MIN_VERSION, SKILL_SLUG, SKILL_VERSION
 from util.logging_config import get_skill_logger, setup_skill_logging
-from util.runtime_paths import get_skill_data_dir, get_skill_root
+from util.runtime_paths import get_db_path, get_skill_data_dir, get_skill_root
 from util.timeutil import unix_to_iso
+from db.connection import init_db
 
 
 def _get_task_logger():
@@ -292,3 +293,28 @@ def cmd_health() -> int:
 def cmd_version() -> int:
     print(json.dumps({"version": SKILL_VERSION, "skill": SKILL_SLUG}, ensure_ascii=False))
     return 0
+
+
+def cmd_init_db() -> int:
+    """幂等创建/迁移本地 SQLite 与数据管理元数据（宿主 install/upgrade 可调用）。"""
+    try:
+        init_db()
+    except Exception as exc:  # noqa: BLE001 — CLI 边界，统一成可机读失败
+        print(
+            json.dumps(
+                {"ok": False, "skill": SKILL_SLUG, "error": str(exc)},
+                ensure_ascii=False,
+            )
+        )
+        return 1
+    print(
+        json.dumps(
+            {
+                "ok": True,
+                "skill": SKILL_SLUG,
+                "db_path": get_db_path(),
+            },
+            ensure_ascii=False,
+        )
+    )
+    return 0