Summary

This PR adds DrawIO (draw.io) export to LikeC4: export views to .drawio XML (single or multi-file), with optional round-trip options (layout, stroke colors/widths, edge waypoints), CLI command, and Playground context menu integration. It also includes a cleanup pass: removal of build artifacts that were accidentally committed, and addressing CodeRabbit review (actionable fixes + nitpicks).

Features

Export to DrawIO

• @likec4/generators: generateDrawio, generateDrawioMulti produce draw.io-compatible XML; optional GenerateDrawioOptions for layout override, stroke colors/widths per node, edge waypoints, and round-trip comment blocks in source.
• Round-trip: Export can embed // likec4.layout.viewId, // likec4.strokeColor, // likec4.strokeWidth, // likec4.edge.waypoints in .c4 source; parseDrawioRoundtripComments reads them for re-export after editing in draw.io.
• CLI: likec4 export drawio <path> -o <outdir> with options --all-in-one, --roundtrip, --uncompressed, --project, --use-dot.
• Playground: Right-click on diagram canvas → “Export to DrawIO” (current view) or “Export all” (all views). Optional getSourceContent for round-trip when used outside the provider.

Tests & E2E

• Unit: generate-drawio.spec.ts, drawio-demo-export-import.spec.ts (cloud-system demo, element/edge counts, loadable XML). Timeouts increased for fromWorkspace/layoutedModel tests.
• E2E: Playwright tests for DrawIO context menu in Playground (pnpm test:playground from e2e/).

Cleanup & CodeRabbit fixes

Build artifacts removal

• Removed ~1555 compiled .js/.d.ts and PR temp docs that had been added in a previous commit (git add -A). All were verified to match strict criteria (only artifacts).
• .gitignore updated: *.spec.js, *.test.js, apps/playground/src/**/*.js, packages/*/src/**/*.js, .cursor/, and comments on scope.

Actionable (CodeRabbit)

• packages/config filenames: isLikeC4Config / isLikeC4NonJsonConfig return boolean instead of type predicates (they only check basename; narrowing full path was unsound).
• .cursor/: Directory gitignored; git-push-remotes.mdc removed from tracking. AGENTS.md notes that contributors may use .cursor/rules/ locally and should not commit it.
• pako: pako and @types/pako added to pnpm workspace catalog; packages/generators uses catalog:.
• parse-drawio: In computeContainerTitles, title cells are created with parent="${containerId}" by the generator; parse logic now uses v.parent === cont.id instead of v.parent === cont.parent. Self-closing tag detection uses full trimmed open tag. TODO added for round-trip comment parser deduplication.
• logger: ViteLogger type now omits both debug and hasErrorLogged so they are optional for Vite.
• ci-validate-in-docker: NODE_ENV=production moved to after pnpm install so devDependencies are installed; Corepack pnpm set to 10.29.3 (match .tool-versions); comment added for version sync.
• vitest: Root config merges configDefaults.exclude with custom patterns so default exclusions are preserved.

Nitpicks

• Scripts: ci-validate-in-docker.ps1 uses Write-Output instead of Write-Host.
• documentation-provider: Null guards for parseDeploymentNode and parseDeployedInstance (aligned with parseElement).
• JSDoc: HoverProvider (class + constructor), browser startLanguageServer, drawio handler (sequential export comment).
• Playground: useDrawioContextMenuActions — pass onExportError directly; comment on stabilizing viewStates for useMemo. Monaco: pass setLayoutedModelApi directly. LanguageClientSync: logger.warn in catch blocks for layouted model / layout view failures.
• generate-drawio: Removed duplicate html=1; at end of vertex style; comments for getDefaultStrokeWidth and node sort. generate-drawio.spec: Comment on duplication with drawio-test-utils; mockViewModel as plain function (no vi.fn). e2e: Removed redundant $.nothrow = false; simplified assertion message (dead branch). .gitignore: Comments on glob scope and personal workflow files.

Changesets

• drawio-related changesets are in .changeset/ (e.g. drawio-cli-roundtrip-e2e, drawio-roundtrip-options, drawio-import-postpack).

Checklist

• Build and typecheck pass
• Tests updated/added (unit + e2e)
• CodeRabbit actionable and nitpick comments addressed
• No build artifacts or personal config committed

Summary by CodeRabbit

• Bug Fixes

  • DrawIO export XML now properly escapes special characters
  • Context menu matching and download validation improved
  • Enhanced XML attribute parsing for consistent handling

• Tests

  • Stricter menu item and download filename assertions
  • Improved test efficiency with shared initialization

• Chores

  • Updated CI validation scripts and Vite configuration
  • Repository maintenance and workspace dependency updates