* fix(mcp): sync browser state before get_diagram to prevent data loss
- Add syncRequested flag to SessionState for browser sync coordination
- Add requestSync() and waitForSync() functions to http-server
- Browser polls for syncRequested flag and immediately pushes current state
- get_diagram now syncs fresh state from browser before returning
- edit_diagram requires get_diagram to be called within 30s to prevent stale edits
- Updated edit_diagram description to enforce workflow
* fix(mcp): make lastGetDiagramTime session-scoped and handle missing session in requestSync
- Move lastGetDiagramTime into currentSession object to prevent cross-session issues
- requestSync now returns boolean indicating if request was made
- Only wait for sync if session exists (avoids false-positive from undefined state)
- Sync browser state before saving history in display_diagram
- Save AI result to history (in addition to state before)
- Add SVG capture after browser loads AI diagrams
- Add /api/history-svg endpoint to update last entry's SVG
- Add updateLastHistorySvg() function to history module
- Reduce history.ts from 169 to 51 lines
- Remove AI tools (list_history, restore_version, get_version)
- Remove /api/update-svg endpoint
- Remove 10-second history polling
- Simplify HistoryEntry to just {xml, svg}
- Use array index instead of version numbers
Total reduction: 1936 → 923 lines (-52%)
- Add history.ts module with circular buffer (max 50 entries)
- Add history UI with floating button and modal
- Add HTTP endpoints: /api/history, /api/restore
- Add MCP tools: list_history, restore_version, get_version
- Save history before and after AI changes
- Track source (ai/human) for each entry
* feat: add MCP server package for npx distribution
- Self-contained MCP server with embedded HTTP server
- Real-time browser preview via draw.io iframe
- Tools: start_session, display_diagram, edit_diagram, get_diagram, export_diagram
- Port retry limit (6002-6020) and session TTL cleanup (1 hour)
- Published as @next-ai-drawio/mcp-server on npm
* chore: bump version to 0.1.2
* docs: add MCP server section to README (preview feature)
* docs: add multi-client installation instructions for MCP server
* fix: exclude packages from Next.js build
* docs: use @latest instead of -y flag for npx (match Playwright MCP style)
* chore: bump version to 0.4.3 and add release notes
* chore: remove release notes
* feat: add MCP server notice to example panel
