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23b90d01a6
* feat: add MCP Apps with rich HTML UIs for tool results Add MCP Apps infrastructure that allows MCP hosts like Claude Desktop to render rich HTML UIs alongside tool results via `_meta.ui` and the MCP resources protocol. - Server-side UI module (src/mcp/ui/) with UIAppRegistry, tool-to-UI mapping, and _meta.ui injection into tool responses - React + Vite build pipeline (ui-apps/) producing self-contained HTML per app using vite-plugin-singlefile - Operation Result UI for workflow CRUD tools (create, update, delete, test, autofix, deploy) - Validation Summary UI for validation tools (validate_node, validate_workflow, n8n_validate_workflow) - Shared component library (Card, Badge, Expandable) with n8n dark theme - MCP resources protocol support (ListResources, ReadResource handlers) - Graceful degradation when ui-apps/dist/ is not built - 22 unit tests across 3 test files Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * test: improve MCP Apps test coverage and add security hardening - Expand test suite from 22 to 57 tests across 3 test files - Add UIAppRegistry.reset() for proper test isolation between tests - Replace some fs mocks with real temp directory tests in registry - Add edge case coverage: empty strings, pre-load state, double load, malformed URIs, duplicate tool patterns, empty HTML files - Add regression tests for specific tool-to-UI mappings - Add URI format consistency validation across all configs - Improve _meta.ui injection tests with structuredContent coexistence - Coverage: statements 79.4% -> 80%, lines 79.4% -> 80% Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix: align MCP Apps with official ext-apps spec Update URI scheme from n8n-mcp://ui/ to ui://n8n-mcp/ per MCP spec. Move _meta.ui.resourceUri to tool definitions (tools/list) instead of tool call responses. Rewrite UI apps hook to use @modelcontextprotocol/ext-apps App class instead of window.__MCP_DATA__. Conceived by Romuald Czlonkowski - https://www.aiadvisors.pl/en Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>