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FRONTEND_IMPLEMENTATION.md

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+# Frontend Implementation Guide
+
+This document outlines all frontend changes needed to complete the agentic context implementation.
+
+---
+
+## Summary of Required Changes
+
+### Phase 1.2 & 1.3: Writing Mode UX
+- Add empty state check and UI
+- Add warning for notes in Writing mode
+- Add CSS for empty state
+
+### Phase 2.4 & 2.5: Agentic Features
+- Add summarization function
+- Add intent detection function
+- Add contextual action cards
+- Add CSS for contextual actions
+
+### Phase 3: UX Enhancements
+- Add context indicator
+- Add /reset command
+- Add context mode settings (backend)
+
+---
+
+## Implementation Status
+
+✅ **Backend Complete:**
+- Chat history sent to all endpoints
+- `/summarize-context` endpoint added
+- `/detect-intent` endpoint added
+- Cost tracking supports new operations
+
+⏳ **Frontend Pending:**
+- Writing mode empty state
+- Writing mode notes warning
+- Summarization logic
+- Intent detection logic
+- Context indicator
+- /reset command
+- Context mode settings
+
+---
+
+## Code Locations
+
+### sidebar.js Key Functions to Add/Modify:
+1. `shouldShowWritingEmptyState()` - NEW
+2. `renderWritingEmptyState()` - NEW
+3. `handleExecuteArticle()` - MODIFY (add plan check)
+4. `handleSendMessage()` - MODIFY (add writing mode warning)
+5. `summarizeChatHistory()` - NEW
+6. `detectUserIntent()` - NEW
+7. `renderContextualAction()` - NEW
+8. `renderContextIndicator()` - NEW
+9. `handleResetCommand()` - NEW
+
+### sidebar.css Additions:
+1. `.wpaw-writing-empty-state` styles
+2. `.wpaw-contextual-action` styles
+3. `.wpaw-context-indicator` styles
+
+---
+
+## Next Steps
+
+1. Implement Writing mode empty state (Phase 1.2)
+2. Implement Writing mode notes warning (Phase 1.3)
+3. Implement summarization (Phase 2.4)
+4. Implement intent detection (Phase 2.5)
+5. Implement context indicator (Phase 3.1)
+6. Implement /reset command (Phase 3.2)
+7. Implement context settings (Phase 3.3)
+
+---
+
+**Current Focus:** Implementing all frontend changes systematically