Feature/custom strategy (#1172)

* feat: add Strategy Studio with multi-timeframe support
- Add Strategy Studio page with three-column layout for strategy management
- Support multi-timeframe K-line data selection (5m, 15m, 1h, 4h, etc.)
- Add GetWithTimeframes() function in market package for fetching multiple timeframes
- Add TimeframeSeriesData struct for storing per-timeframe technical indicators
- Update formatMarketData() to display all selected timeframes in AI prompt
- Add strategy API endpoints for CRUD operations and test run
- Integrate real AI test runs with configured AI models
- Support custom AI500 and OI Top API URLs from strategy config
* docs: add Strategy Studio screenshot to README files
* fix: correct strategy-studio.png filename case in README
* refactor: remove legacy signal source config and simplify trader creation
- Remove signal source configuration from traders page (now handled by strategy)
- Remove advanced options (legacy config) from TraderConfigModal
- Rename default strategy to "默认山寨策略" with AI500 coin pool URL
- Delete SignalSourceModal and SignalSourceWarning components
- Clean up related stores, hooks, and page components

README.md

@@ -87,6 +87,10 @@ Join our Telegram developer community to discuss, share ideas, and get support:
 ![Details Page](screenshots/details-page.png)
 *Professional trading interface with equity curves, live positions, and AI decision logs with expandable input prompts & chain-of-thought reasoning*
 
+### 🎛️ Strategy Studio - Custom Strategy Builder
+![Strategy Studio](screenshots/strategy-studio.png)
+*Three-column strategy editor with multi-timeframe selection (5m/15m/1h/4h), technical indicators configuration, risk control settings, and real-time AI test run with live market data*
+
 ---
 
 ## 🏦 Supported Exchanges (DEX/CEX Tutorials)