feat: AI余额定时自动同步（CLI脚本+systemd每日timer+批量同步接口+前端按钮）

app/services/sync_service.py

@@ -295,3 +295,30 @@ def refresh_ai_balance(session: Session, asset_id: int) -> dict:
         "currency": ai.currency,
         "last_synced_at": ai.last_synced_at.isoformat(),
     }
+
+
+def sync_all_ai_balances(session: Session) -> dict:
+    """遍历所有 AI 账号资产，逐个刷新余额（单个失败不中断整体）"""
+    ai_assets = session.exec(
+        select(Asset).where(Asset.asset_type == AssetType.AI_AGENT)
+    ).all()
+    success = 0
+    failed = 0
+    errors = []
+    for asset in ai_assets:
+        try:
+            refresh_ai_balance(session, asset.id)
+            success += 1
+        except HTTPException as e:
+            failed += 1
+            errors.append(f"{asset.name}: {e.detail}")
+        except Exception as e:  # noqa: BLE001
+            failed += 1
+            errors.append(f"{asset.name}: {e}")
+    return {
+        "total": len(ai_assets),
+        "success": success,
+        "failed": failed,
+        "errors": errors,
+        "synced_at": datetime.utcnow().isoformat(),
+    }