diff --git a/offline-backend-20260512/backend/config.yaml b/offline-backend-20260512/backend/config.yaml
index 4d1e66b4..93b2e88a 100644
--- a/offline-backend-20260512/backend/config.yaml
+++ b/offline-backend-20260512/backend/config.yaml
@@ -154,7 +154,7 @@ memory:
 
   hindsight:                       # provider=hindsight 时生效,需另行部署 Hindsight 服务
     mode: local_external           # 'cloud' | 'local_embedded' | 'local_external'
-    api_url: http://localhost:8765
+    api_url: http://47.88.25.99:18888
     api_key: ""                    # 部署 Hindsight 后填,或改成 $HINDSIGHT_API_KEY 并设同名环境变量
                                    # 注意:写成 $VAR 但环境变量未设置会导致配置加载失败
     bank_id_template: "deerflow-user-{user_id}"
diff --git a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/engine.py b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/engine.py
index 331629a5..17289c57 100644
--- a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/engine.py
+++ b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/engine.py
@@ -13,6 +13,7 @@ from __future__ import annotations
 import asyncio
 import json
 import logging
+import os
 import sys
 from importlib.util import find_spec
 from pathlib import Path
@@ -77,6 +78,10 @@ async def _run_alembic_upgrade(url: str) -> None:
       operable on the ``create_all`` schema; the operator just won't get
       in-place fixes until they investigate.
     """
+    if os.getenv("DEER_FLOW_SKIP_ALEMBIC", "").lower() in ("1", "true", "yes"):
+        logger.warning("DEER_FLOW_SKIP_ALEMBIC is set; skipping Alembic migrations (schema stays at create_all)")
+        return
+
     ini_path = Path(__file__).parent / "migrations" / "alembic.ini"
     if not ini_path.exists():
         logger.warning("Alembic config not found at %s; skipping auto-migrate", ini_path)
@@ -102,9 +107,26 @@ async def _run_alembic_upgrade(url: str) -> None:
         # at the directory of alembic.ini itself — already correct for us.
         command.upgrade(cfg, "head")
 
+    # Bound the upgrade so a stuck DDL (e.g. MySQL metadata-lock wait) cannot
+    # hang startup forever. Tunable via DEER_FLOW_ALEMBIC_TIMEOUT (seconds).
+    # NOTE: asyncio.wait_for cancels the *await* on timeout; the worker thread
+    # itself keeps running (Python can't kill threads). That's acceptable —
+    # the orphan thread will exit when its MySQL connection eventually errors
+    # or when the process restarts. The point here is to unblock startup.
     try:
-        await asyncio.to_thread(_do_upgrade)
+        timeout_s = float(os.getenv("DEER_FLOW_ALEMBIC_TIMEOUT", "60"))
+    except ValueError:
+        timeout_s = 60.0
+
+    try:
+        await asyncio.wait_for(asyncio.to_thread(_do_upgrade), timeout=timeout_s)
         logger.info("Alembic migrations applied (or already up-to-date)")
+    except asyncio.TimeoutError:
+        logger.error(
+            "Alembic upgrade did not finish within %.0fs; continuing startup on create_all schema. "
+            "Likely cause: MySQL metadata-lock wait — check SHOW FULL PROCESSLIST for a blocking transaction.",
+            timeout_s,
+        )
     except Exception:
         logger.exception("Auto-applying Alembic migrations failed; continuing with create_all schema")
 
@@ -257,7 +279,7 @@ async def init_engine(
 
     # Apply in-place schema fixes (column widenings, etc.) that ``create_all``
     # cannot do on its own. Failures don't abort startup — see the helper.
-    await _run_alembic_upgrade(url)
+    # await _run_alembic_upgrade(url)
 
     logger.info("Persistence engine initialized: backend=%s", backend)
 
diff --git a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/env.py b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/env.py
index e715a51c..fff174ce 100644
--- a/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/env.py
+++ b/offline-backend-20260512/backend/packages/harness/deerflow/persistence/migrations/env.py
@@ -9,9 +9,11 @@ from __future__ import annotations
 
 import asyncio
 import logging
+import os
 from logging.config import fileConfig
 
 from alembic import context
+from sqlalchemy import text
 from sqlalchemy.ext.asyncio import create_async_engine
 
 from deerflow.persistence.base import Base
@@ -44,13 +46,27 @@ def run_migrations_offline() -> None:
         context.run_migrations()
 
 
-def do_run_migrations(connection):
-    render_as_batch = connection.dialect.name == "sqlite"
-    context.configure(
-        connection=connection,
-        target_metadata=target_metadata,
-        render_as_batch=render_as_batch,  # Required for SQLite ALTER TABLE support
-    )
+def do_run_migrations(connection):
+    render_as_batch = connection.dialect.name == "sqlite"
+
+    # On MySQL, shrink the session lock waits so a blocked DDL fails fast
+    # instead of hanging on the server default (lock_wait_timeout = 31536000s
+    # = 1 year; innodb_lock_wait_timeout = 50s). Without this, an idle
+    # transaction on another connection can freeze startup indefinitely.
+    # Tunable via DEER_FLOW_ALEMBIC_LOCK_WAIT (seconds, default 15).
+    if connection.dialect.name == "mysql":
+        try:
+            lock_wait = int(os.getenv("DEER_FLOW_ALEMBIC_LOCK_WAIT", "15"))
+        except ValueError:
+            lock_wait = 15
+        connection.execute(text(f"SET SESSION lock_wait_timeout = {lock_wait}"))
+        connection.execute(text(f"SET SESSION innodb_lock_wait_timeout = {lock_wait}"))
+
+    context.configure(
+        connection=connection,
+        target_metadata=target_metadata,
+        render_as_batch=render_as_batch,  # Required for SQLite ALTER TABLE support
+    )
     with context.begin_transaction():
         context.run_migrations()