Refactor: Improve AI decision system and Sharpe ratio calculation

Major improvements:
- Use period-level Sharpe ratio (range -2 to +2) instead of annualized
- Save full user prompt in decision logs for debugging
- Format complete market data (3m + 4h candles) for AI analysis
- Prevent position stacking with duplicate position checks
- Update Sharpe ratio interpretation thresholds
Market data enhancements:
- Display full technical indicators in user prompt
- Include 3-minute and 4-hour timeframe data
- Add OI (Open Interest) change and funding rate signals
Risk control:
- Block opening duplicate positions (same symbol + direction)
- Suggest close action first before opening new position
- Prevent margin usage from exceeding limits
UI improvements:
- Update multi-language translations
- Refine AI learning dashboard display
Co-Authored-By: tinkle-community <tinklefund@gmail.com>

web/src/i18n/translations.ts

@@ -47,6 +47,7 @@ export const translations = {
     cycle: 'Cycle',
     success: 'Success',
     failed: 'Failed',
+    inputPrompt: 'Input Prompt',
     aiThinking: 'AI Chain of Thought',
     collapse: 'Collapse',
     expand: 'Expand',
@@ -164,6 +165,7 @@ export const translations = {
     cycle: '周期',
     success: '成功',
     failed: '失败',
+    inputPrompt: '输入提示',
     aiThinking: '💭 AI思维链分析',
     collapse: '▼ 收起',
     expand: '▶ 展开',