docs: Add BMAD stories and implementation plan for DexScreener

- Add Story 1.1: DexScreener Connector Backend (complete)
- Add Story 1.2: DexScreener Connector Frontend UI (ready for dev)
- Add implementation plan with architecture decisions
- Include assets and documentation structure
- Stories follow BMAD methodology for AI-driven development

_bmad-stories/README.md

@@ -0,0 +1,58 @@
+# SurfSense Stories
+
+Danh sách các user stories cho dự án SurfSense.
+
+## 📋 Active Stories
+
+### Story 1.1: DexScreener Connector Integration
+- **Status**: Ready for Development
+- **Priority**: High
+- **Epic**: SurfSense Connectors Enhancement
+- **File**: [story-1.1-dexscreener-connector.md](./story-1.1-dexscreener-connector.md)
+- **Implementation Plan**: [dexscreener-connector-implementation-plan.md](../_bmad-output/dexscreener-connector-implementation-plan.md)
+
+**Summary**: Integrate DexScreener API connector để users có thể track và search crypto trading pairs data.
+
+**Key Features**:
+- Configure tracked tokens across multiple chains
+- Auto-index trading pair data (prices, volume, liquidity)
+- Search indexed crypto market data
+- AI chat with DexScreener context
+
+**Acceptance Criteria**: 6 categories, 20+ checkboxes
+- ✅ Connector Configuration
+- ✅ API Integration
+- ✅ Data Indexing
+- ✅ Periodic Indexing
+- ✅ Search Integration
+- ✅ AI Chat Integration
+
+---
+
+## 📁 Story Organization
+
+```
+_bmad-stories/
+├── README.md                                    # This file
+├── story-1.1-dexscreener-connector.md          # Story 1.1
+└── [future stories...]
+```
+
+## 🔗 Related Documentation
+
+- [Connectors Architecture](../_bmad-output/connectors-explained.md)
+- [Custom Connector Guide](../_bmad-output/custom-connector-guide.md)
+- [User Guide](../_bmad-output/user-guide.md)
+
+## 📊 Story Status Legend
+
+- **Ready for Development**: Story đã được review và sẵn sàng implement
+- **In Progress**: Đang được develop
+- **In Review**: Code đã hoàn thành, đang review
+- **Testing**: Đang test
+- **Done**: Hoàn thành và deployed
+- **Blocked**: Bị block bởi dependencies hoặc issues
+
+---
+
+**Last Updated**: 2026-01-31