* fix:custom model setting bug
* refactor: consolidate aiProvider checks for cleaner code
* fix:Integrated the language selection option into the `SettingsDialog`
* fix:useSearchParams() should be wrapped in a suspense boundary at page
* fix: improve semantic HTML and maintainability
- Replace nested button>a with proper anchor element for GitHub link
- Use i18n.locales.map() with LANGUAGE_LABELS for language options
---------
Co-authored-by: dayuan.jiang <jdy.toh@gmail.com>
* feat: add multi-provider model configuration
- Add model config dialog for managing multiple AI providers
- Support for OpenAI, Anthropic, Google, Azure, Bedrock, OpenRouter, DeepSeek, SiliconFlow, Ollama, and AI Gateway
- Add model selector dropdown in chat panel header
- Add API key validation endpoint
- Add custom model ID input with keyboard navigation
- Fix hover highlight in Command component
- Add suggested models for each provider including latest Claude 4.5 series
- Store configuration locally in browser
* feat: improve model config UI and move selector to chat input
- Move model selector from header to chat input (left of send button)
- Add per-model validation status (queued, running, valid, invalid)
- Filter model selector to only show verified models
- Add editable model IDs in config dialog
- Add custom model input field alongside suggested models dropdown
- Fix hover states on provider buttons and select triggers
- Update OpenAI suggested models with GPT-5 series
- Add alert-dialog component for delete confirmation
* refactor: revert shadcn component changes, apply hover fix at usage site
* feat: add AWS credentials support for Bedrock provider
- Add AWS Access Key ID, Secret Access Key, Region fields for Bedrock
- Show different credential fields based on provider type
- Update validation API to handle Bedrock with AWS credentials
- Add region selector with common AWS regions
* fix: reset Test button after validation completes
* fix: reset validation button to Test after success
* fix: complete bedrock support and UI/UX improvements
- Add bedrock to ALLOWED_CLIENT_PROVIDERS for client credentials
- Pass AWS credentials through full chain (headers → API → provider)
- Replace non-existent GPT-5 models with real ones (o1, o3-mini)
- Add accessibility: aria-labels, focus-visible rings, inline errors
- Add more AWS regions (Ohio, London, Paris, Mumbai, Seoul, São Paulo)
- Fix setTimeout cleanup with useRef on component unmount
- Fix TypeScript type consistency in getSelectedAIConfig fallback
* chore: remove unused code
- Remove unused setAccessCodeRequired state in chat-panel.tsx
- Remove unused getSelectedModel export in model-config.ts
* fix: UI/UX improvements for model configuration dialog
- Add gradient header styling with icon badge
- Change Configuration section icon from Key to Settings2
- Add duplicate model detection with warning banner and inline removal
- Filter out already-added models from suggestions dropdown
- Add type-to-confirm for deleting providers with 3+ models
- Enhance delete confirmation dialog with warning icon
- Improve model selector discoverability (show model name + chevron)
- Add truncation for long model names with title tooltip
- Remove AI provider settings from Settings dialog (now in Model Config)
- Extract ValidationButton into reusable component
* fix: prevent duplicate model IDs within same provider
- Block adding model if ID already exists in provider
- Block editing model ID to match existing model in provider
* fix: improve duplicate model ID notifications
- Add toast notification when trying to add duplicate model
- Allow free typing when editing model ID, validate on blur
- Show warning toast instead of blocking input
* fix: improve duplicate model validation UX in config dialog
- Add inline error display for duplicate model IDs
- Show red border on input when error exists
- Validate on blur with shake animation for edit errors
- Prevent saving empty model names
- Clear errors when user starts typing
- Simplify error styling (small red text, no heavy chips)
* chore: bump version to 0.4.5 and add desktop app to README
* style: auto-format with Biome
---------
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
* feat(electron): add desktop application support with electron
- implement complete Electron main process architecture with window management,
app menu, IPC handlers, and settings window
- integrate Next.js server for production builds with embedded standalone server
- add configuration management with persistent storage and env file support
- create preload scripts with secure context bridge for renderer communication
- set up electron-builder configuration for multi-platform packaging (macOS,
Windows, Linux)
- add GitHub Actions workflow for automated release builds
- include development scripts for hot-reload during Electron development
* feat(electron): enhance security and stability
- encrypt API keys using Electron safeStorage API before persisting to disk
- add error handling and rollback for preset switching failures
- extract inline styles to external CSS file and remove unsafe-inline from CSP
- implement dynamic port allocation with automatic fallback for production builds
* fix(electron): add maintainer field for Linux .deb package
- add maintainer email to linux configuration in electron-builder.yml
- required for building .deb packages
* fix(electron): use shx for cross-platform file copying
- replace Unix-only cp -r with npx shx cp -r
- add shx as devDependency for Windows compatibility
* fix(electron): fix runtime icon path for all platforms
- use icon.png directly instead of platform-specific formats
- electron-builder handles icon conversion during packaging
- macOS uses embedded icon from app bundle, no explicit path needed
- add icon.png to extraResources for Windows/Linux runtime access
* fix(electron): add security warning for plaintext API key storage
- warn user when safeStorage is unavailable (Linux without keyring)
- fail secure: throw error if encryption fails instead of storing plaintext
- prevent duplicate warnings with hasWarnedAboutPlaintext flag
* fix(electron): add remaining review fixes
- Add Windows ARM64 architecture support
- Add IPC input validation with config key whitelist
- Add server.js existence check before starting Next.js server
- Make afterPack throw error on missing directories
- Add workflow permissions for release job
---------
Co-authored-by: dayuan.jiang <jdy.toh@gmail.com>
* 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)
Keep only essential history integration:
- Import addHistory from history.js
- Remove unused getServerPort import
- Add browser state sync and history saving in display_diagram
- Add history saving in edit_diagram
No changes to prompts, descriptions, or code style.
- 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
* chore: bump version to 0.4.4
* style: auto-format with Biome
---------
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
* feat(mcp): add XML validation and auto-fix to MCP server
- Add xml-validation.ts with validateAndFixXml function
- Integrate validation into display_diagram tool (fails if unfixable)
- Integrate validation into edit_diagram tool (auto-fix each operation)
- Fix bug: typo fixes now run before foreign tag removal
- Fix bug: use before/after comparison instead of regex .test()
* style: auto-format with Biome
* chore(mcp): bump version to 0.1.3
---------
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
* feat: add get_shape_library tool for AI icon discovery
- Add server-side tool that returns shape library documentation
- AI can fetch icon/shape names on-demand before generating diagrams
- Includes path traversal protection and input sanitization
- Library index embedded in tool description for discoverability
- Supports 33 libraries: AWS, Azure, GCP, Kubernetes, Cisco, etc.
* fix: improve get_shape_library error handling and imports
- Move fs/path imports to top of file (avoid dynamic imports per call)
- Distinguish file-not-found vs other errors in catch block
- Include invalid input in validation error message
- Log unexpected errors for debugging
* docs: add get_shape_library to system prompt tool list
- Add Tool4 (get_shape_library) to available tools section
- Add usage guidance in 'Choose the right tool' section
- Update AWS icons note to reference get_shape_library for icon discovery
* fix: display get_shape_library tool output in chat UI
* fix: correct state check for get_shape_library output display
* fix: make get_shape_library output respect fold state
* style: auto-format with Biome
---------
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
* feat: add support for custom AI Gateway base URL
- Add createGateway support with configurable baseURL
- Allow AI_GATEWAY_BASE_URL environment variable for:
* Local development with custom Gateway
* Self-hosted AI Gateway deployments
* Enterprise proxy configurations
- Maintain backward compatibility: defaults to Vercel Gateway when not set
- Update documentation with usage examples and configuration notes
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
* fix: remove errant character in error message
---------
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>
Co-authored-by: dayuan.jiang <jdy.toh@gmail.com>
* fix: Prevent DrawIO remount and data loss when resizing window across 768px breakpoint
* fix: prevent DrawIO remount and data loss when resizing window
- Move key from ResizablePanelGroup to chat-panel only
- Save diagram to localStorage before breakpoint change
- Restore defaultSize on drawio-panel to prevent layout flash
- Keep save button functionality from main
* fix: reset draw.io ready state on breakpoint change to restore diagram
* fix: skip initial render save and remove console logs
- Add isInitialRenderRef to skip unnecessary save/reset on first render
- Remove console.log statements for production cleanliness
- Add eslint-disable comment explaining loadDiagram dependency
---------
Co-authored-by: dayuan.jiang <jdy.toh@gmail.com>
- Add showSaveDialog state to DiagramContext for shared state
- Add mouse tracking to only respond to save events when mouse is over draw.io panel
- Prevents save dialog from opening when clicking Send in chat panel
- Add DialogDescription to SaveDialog for accessibility
- Lift showSaveDialog state to DiagramContext for sharing between components
- Add onSave handler to DrawIoEmbed that opens the save dialog
- Add guard (isSavingRef) with 1s delay to prevent repeated save events from draw.io
- Add deprecation notice to custom download button tooltip
Closes#93, Closes#290
* 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
* feat: add Vercel AI Gateway support
- Updated environment configuration to include AI_GATEWAY_API_KEY for unified access to multiple AI providers.
- Added gateway provider to the list of supported AI providers in the codebase.
- Enhanced documentation to explain the usage of Vercel AI Gateway and its model format.
This change simplifies authentication and allows users to switch between providers seamlessly.
* Update package
@ai-sdk/gateway to latest version 2.0.21
## Summary
- Auto-saves diagram to localStorage before theme or UI style changes to prevent data loss
- Extracts inline handler to `handleDrawioUiChange` for cleaner code
- Renames `toggleDarkMode` to `handleDarkModeChange` for consistency
## Problem
Changing themes (dark/light) or draw.io UI styles (min/sketch) causes the DrawIoEmbed component to remount, losing all unsaved edits without warning.
## Solution
Added `saveDiagramToStorage()` function that exports the current diagram and saves it to localStorage before any theme/UI change. The existing restore mechanism then loads it back after remount.
## Related Issues
Fixes#243
* refactor: replace text-based edit_diagram with ID-based operations
- Add applyDiagramOperations() function using DOMParser for ID lookup
- New schema: operations array with type (update/add/delete), cell_id, new_xml
- Update chat-panel.tsx handler for new operations format
- Update OperationsDisplay component to show operation type and cell_id
- Simplify system prompts with new ID-based examples
- Add ID validation for add operations
- Add warning for edges referencing deleted cells
* fix: add ID validation to update operation and remove dead code
- Add ID mismatch validation to update operation (consistency with add)
- Remove orphaned replaceXMLParts function (~300 lines of dead code)
- Update cell_id schema description for clarity
- Add unit tests for applyDiagramOperations (11 tests)
The hasValidDiagramXml filter was deleting valid messages that had minor
XML issues. Error handling in handleDisplayChart now catches all errors,
so filtering is no longer needed - invalid XML just won't load the diagram
but the conversation is preserved.
When LLM generates invalid XML, the app previously saved corrupted messages
to localStorage, causing an unrecoverable crash loop on restart.
This fix validates messages when restoring from localStorage and filters out
any with invalid diagram XML. Users see a toast notification when corrupted
messages are removed.
Fixes#240
* feat: add minimal style mode toggle for faster diagram generation
- Add Minimal/Styled toggle switch in chat input UI
- When enabled, removes color/style instructions from system prompt
- Faster generation with plain black/white diagrams
- Improves XML auto-fix: handle foreign tags, extra closing tags, trailing garbage
- Fix isMxCellXmlComplete to strip Anthropic function-calling wrappers
- Add debug logging for truncation detection diagnosis
* fix: prevent false XML parse errors during streaming
- Escape unescaped & characters in convertToLegalXml() before DOMParser validation
- Only log console.error for final output, not during streaming updates
- Prevents Next.js dev mode error overlay from showing for expected streaming states
* refactor: simplify LLM XML format to output bare mxCells only
- Update wrapWithMxFile() to always add root cells (id=0, id=1) automatically
- LLM now generates only mxCell elements starting from id=2 (no wrapper tags)
- Update system prompts and tool descriptions with new format instructions
- Update cached responses to remove root cells and wrapper tags
- Update truncation detection to check for complete mxCell endings
- Update documentation in xml_guide.md
* fix: address PR review issues for XML format refactor
- Fix critical bug: inconsistent truncation check using old </root> pattern
- Fix stale error message referencing </root> tag
- Add isMxCellXmlComplete() helper for consistent truncation detection
- Improve regex patterns to handle any attribute order in root cells
- Update wrapWithMxFile JSDoc to document root cell removal behavior
* fix: handle non-self-closing root cells in wrapWithMxFile regex
* feat: add append_diagram tool for truncation continuation
When LLM output hits maxOutputTokens mid-generation, instead of
failing with an error loop, the system now:
1. Detects truncation (missing </root> in XML)
2. Stores partial XML and tells LLM to use new append_diagram tool
3. LLM continues generating from where it stopped
4. Fragments are accumulated until XML is complete
5. Server limits to 5 steps via stepCountIs(5)
Key changes:
- Add append_diagram tool definition in route.ts
- Add append_diagram handler in chat-panel.tsx
- Track continuation mode separately from error mode
- Continuation mode has unlimited retries (not counted against limit)
- Error mode still limited to MAX_AUTO_RETRY_COUNT (1)
- Update system prompts to document append_diagram tool
* fix: show friendly message and yellow badge for truncated output
- Add yellow 'Truncated' badge in UI instead of red 'Error' when XML is incomplete
- Show friendly error message for toolUse.input is invalid errors
- Built on top of append_diagram continuation feature
* refactor: remove debug logs and simplify truncation state
- Remove all debug console.log statements
- Remove isContinuationModeRef, derive from partialXmlRef.current.length > 0
* docs: fix append_diagram instructions for consistency
- Change 'Do NOT include' to 'Do NOT start with' (clearer intent)
- Add <mxCell id="0"> to prohibited start patterns
- Change 'closing tags </root></mxGraphModel>' to just '</root>' (wrapWithMxFile handles the rest)
