diff --git a/app/main.py b/app/main.py
index ba90ea9..045ed14 100644
--- a/app/main.py
+++ b/app/main.py
@@ -9,6 +9,7 @@ from app.coinex import CoinExClient, CoinExLiveStream
 from app.core import get_settings
 from app.db import SessionLocal, get_db, init_db
 from app.demo_account import DemoAccountService
+from app.legacy_bot import LegacyBotService
 from app.models import DemoTradeRecord
 
 settings = get_settings()
@@ -16,6 +17,7 @@ coinex = CoinExClient(settings.coinex_api_base)
 live_stream = CoinExLiveStream(settings.coinex_ws_spot, coinex)
 demo_service = DemoAccountService(settings.demo_initial_balance, settings.demo_quote_asset)
 ai_bot = AiTradingBot(coinex, settings.markets)
+legacy_bot = LegacyBotService()
 
 app = FastAPI(title=settings.app_name)
 static_dir = Path(__file__).parent / 'static'
@@ -25,6 +27,8 @@ app.mount('/static', StaticFiles(directory=static_dir), name='static')
 @app.on_event('startup')
 def on_startup() -> None:
     init_db()
+    with SessionLocal() as db:
+        legacy_bot.ensure_defaults(db)
 
 
 @app.get('/')
@@ -34,24 +38,21 @@ async def dashboard() -> FileResponse:
 
 @app.get('/health')
 async def health() -> dict:
-    return {
-        'status': 'ok',
-        'app': settings.app_name,
-        'env': settings.app_env,
-        'default_market': settings.default_market,
-    }
+    return {'status': 'ok', 'app': settings.app_name, 'env': settings.app_env, 'default_market': settings.default_market}
 
 
 @app.get('/api/v1/app/bootstrap')
 async def app_bootstrap(db: Session = Depends(get_db)) -> dict:
     state = ai_bot.get_or_create_state(db)
     account = demo_service.snapshot(db)
+    legacy_bot.ensure_defaults(db)
     return {
         'app': settings.app_name,
         'default_market': settings.default_market,
         'markets': settings.markets,
         'bot': ai_bot.state_to_dict(state),
         'account': account.model_dump(mode='json'),
+        'legacy': legacy_bot.dashboard(db),
     }
 
 
@@ -66,16 +67,10 @@ async def reset_demo_account(db: Session = Depends(get_db)) -> dict:
 
 
 @app.post('/api/v1/demo/trades')
-async def create_demo_trade(
-    market: str,
-    side: str,
-    price: float,
-    amount: float,
-    reason: str = 'manual demo trade',
-    db: Session = Depends(get_db),
-) -> dict:
+async def create_demo_trade(market: str, side: str, price: float, amount: float, reason: str = 'manual demo trade', db: Session = Depends(get_db)) -> dict:
     try:
         trade = demo_service.add_demo_trade(db=db, market=market, side=side, price=price, amount=amount, reason=reason)
+        legacy_bot.snapshot_history(db)
         return trade.model_dump(mode='json')
     except ValueError as exc:
         raise HTTPException(status_code=400, detail=str(exc)) from exc
@@ -100,28 +95,10 @@ async def bot_settings(db: Session = Depends(get_db)) -> dict:
 
 
 @app.post('/api/v1/bot/settings')
-async def update_bot_settings(
-    enabled: bool | None = None,
-    trade_mode: str | None = None,
-    trade_style_mode: str | None = None,
-    min_signal_score: float | None = None,
-    max_open_positions: int | None = None,
-    max_quote_per_trade: float | None = None,
-    emergency_stop: bool | None = None,
-    db: Session = Depends(get_db),
-) -> dict:
+async def update_bot_settings(enabled: bool | None = None, trade_mode: str | None = None, trade_style_mode: str | None = None, min_signal_score: float | None = None, max_open_positions: int | None = None, max_quote_per_trade: float | None = None, emergency_stop: bool | None = None, db: Session = Depends(get_db)) -> dict:
     if trade_mode is not None and trade_mode not in {'demo', 'live'}:
         raise HTTPException(status_code=400, detail='trade_mode must be demo or live')
-    state = ai_bot.update_state(
-        db,
-        enabled=enabled,
-        trade_mode=trade_mode,
-        trade_style_mode=trade_style_mode,
-        min_signal_score=min_signal_score,
-        max_open_positions=max_open_positions,
-        max_quote_per_trade=max_quote_per_trade,
-        emergency_stop=emergency_stop,
-    )
+    state = ai_bot.update_state(db, enabled=enabled, trade_mode=trade_mode, trade_style_mode=trade_style_mode, min_signal_score=min_signal_score, max_open_positions=max_open_positions, max_quote_per_trade=max_quote_per_trade, emergency_stop=emergency_stop)
     return ai_bot.state_to_dict(state)
 
 
@@ -174,12 +151,8 @@ def _force_demo_trade(db: Session, decision) -> dict:
     decision.executed = True
     db.add(decision)
     db.commit()
-    return {
-        'executed': True,
-        'mode': 'demo',
-        'decision': decision_to_dict(decision),
-        'trade': trade.model_dump(mode='json'),
-    }
+    legacy_bot.snapshot_history(db)
+    return {'executed': True, 'mode': 'demo', 'decision': decision_to_dict(decision), 'trade': trade.model_dump(mode='json')}
 
 
 @app.post('/api/v1/bot/auto-demo-trade')
@@ -196,25 +169,12 @@ async def auto_trade(market: str | None = None, db: Session = Depends(get_db)) -
     state = ai_bot.get_or_create_state(db)
     decision = await ai_bot.make_decision(db, market)
     if state.trade_mode == 'live':
-        return {
-            'executed': False,
-            'mode': 'live',
-            'decision': decision_to_dict(decision),
-            'message': 'Live mode is selected. Real CoinEx execution adapter is not connected yet; demo execution is stable.',
-        }
+        return {'executed': False, 'mode': 'live', 'decision': decision_to_dict(decision), 'message': 'Live mode is selected. CoinEx execution adapter is the next implementation step.'}
     return _force_demo_trade(db, decision)
 
 
 @app.post('/api/v1/signals/manual')
-async def create_manual_signal(
-    title: str,
-    market: str,
-    sentiment: str = 'neutral',
-    score: float = 50.0,
-    source: str = 'manual',
-    url: str = '',
-    db: Session = Depends(get_db),
-) -> dict:
+async def create_manual_signal(title: str, market: str, sentiment: str = 'neutral', score: float = 50.0, source: str = 'manual', url: str = '', db: Session = Depends(get_db)) -> dict:
     signal = ai_bot.record_manual_signal(db, title=title, market=market, sentiment=sentiment, score=score, source=source, url=url)
     return signal_to_dict(signal)
 
@@ -238,6 +198,70 @@ async def dashboard_markers(market: str | None = None, limit: int = 100, db: Ses
     return {'items': [trade_marker_from_record(item) for item in reversed(trades)]}
 
 
+@app.get('/api/v1/legacy/dashboard')
+async def legacy_dashboard(db: Session = Depends(get_db)) -> dict:
+    return legacy_bot.dashboard(db)
+
+
+@app.get('/api/v1/legacy/open-trades')
+async def legacy_open_trades(db: Session = Depends(get_db)) -> dict:
+    return {'items': legacy_bot.open_positions(db)}
+
+
+@app.get('/api/v1/legacy/closed-trades')
+async def legacy_closed_trades(limit: int = 50, db: Session = Depends(get_db)) -> dict:
+    return {'items': legacy_bot.closed_positions(db, limit)}
+
+
+@app.get('/api/v1/legacy/chart-history')
+async def legacy_chart_history(limit: int = 100, db: Session = Depends(get_db)) -> dict:
+    return {'items': legacy_bot.chart_history(db, limit)}
+
+
+@app.get('/api/v1/legacy/strategies')
+async def legacy_strategies(db: Session = Depends(get_db)) -> dict:
+    legacy_bot.ensure_defaults(db)
+    return {'items': legacy_bot.dashboard(db)['strategies']}
+
+
+@app.post('/api/v1/legacy/strategies/{strategy_id}')
+async def legacy_update_strategy(strategy_id: int, enabled: bool | None = None, dry_run: bool | None = None, db: Session = Depends(get_db)) -> dict:
+    try:
+        return legacy_bot.update_strategy(db, strategy_id, enabled, dry_run)
+    except ValueError as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+
+
+@app.get('/api/v1/legacy/coinex')
+async def legacy_coinex(db: Session = Depends(get_db)) -> dict:
+    return legacy_bot.dashboard(db)['coinex']
+
+
+@app.post('/api/v1/legacy/coinex')
+async def legacy_update_coinex(enabled: bool | None = None, access_id: str | None = None, secret_key: str | None = None, mode: str | None = None, db: Session = Depends(get_db)) -> dict:
+    return legacy_bot.update_coinex(db, enabled, access_id, secret_key, mode)
+
+
+@app.post('/api/v1/legacy/telegram')
+async def legacy_update_telegram(enabled: bool | None = None, chat_id: str | None = None, message_format: str | None = None, db: Session = Depends(get_db)) -> dict:
+    return legacy_bot.update_telegram(db, enabled, chat_id, message_format)
+
+
+@app.get('/api/v1/legacy/updater/status')
+async def legacy_updater_status(db: Session = Depends(get_db)) -> dict:
+    return legacy_bot.updater_status(db)
+
+
+@app.post('/api/v1/legacy/terminal')
+async def legacy_terminal(command: str) -> dict:
+    return legacy_bot.terminal_command(command)
+
+
+@app.get('/api/v1/android/status')
+async def android_status(db: Session = Depends(get_db)) -> dict:
+    return legacy_bot.android_status(db)
+
+
 @app.websocket('/ws/market/{market}')
 async def market_stream(websocket: WebSocket, market: str) -> None:
     await websocket.accept()