nexus/.planning/phases/41-diagrams-icons-theme-engine/41-01-SUMMARY.md

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
41-diagrams-icons-theme-engine	01	api	culori resvg svgo wcag-contrast playwright-core shadcn sse content-jobs	phase provides 40-job-infrastructure content_jobs table, renderContent stub, SSE events, contentJobRunner.dispatch, content-job routes	culori, @resvg/resvg-js, wcag-contrast, svgo, playwright-core installed in server server/src/services/renderers/types.ts — RenderResult, DiagramBundle, IconSetBundle, ThemePaletteBundle, PaletteRole, ContentBundle content-job-runner switch dispatching diagram/icon-set/theme-palette to renderer imports stub renderer files diagram-renderer.ts, icon-renderer.ts, theme-renderer.ts (ready for Phase 41 plans 02-04) ui/src/api/contentJobs.ts — submitContentJob, getContentJob, getContentJobAsset ui/src/hooks/useContentJob.ts — submit, reset, SSE progress tracking ui/src/components/ui/progress.tsx and toggle.tsx (shadcn)	41-02-diagram 41-03-icon 41-04-theme 41-05-ui-generator 41-06-ui-theme	added patterns culori @resvg/resvg-js wcag-contrast svgo playwright-core@1.58.2 Dynamic import renderer dispatch: switch(jobType) { case 'x': const { fn } = await import('./renderers/x-renderer.js') } useContentJob hook: companyId parameter, submit/reset, EventSource SSE, progress = queued:5% / running:50% / done:100% culori ESM (converter/formatHex) works directly under NodeNext — no fn/ import needed	created modified server/src/services/renderers/types.ts server/src/services/renderers/diagram-renderer.ts server/src/services/renderers/icon-renderer.ts server/src/services/renderers/theme-renderer.ts ui/src/api/contentJobs.ts ui/src/hooks/useContentJob.ts ui/src/components/ui/progress.tsx ui/src/components/ui/toggle.tsx server/src/services/content-job-runner.ts server/package.json pnpm-lock.yaml	Renderer stub files created to satisfy tsc module resolution — plans 02-04 replace with real implementations playwright-core@1.58.2 pinned to match @playwright/test version in root culori ESM import confirmed working under NodeNext — no workaround needed	Renderer pattern: each renderer in server/src/services/renderers/{name}-renderer.ts, exports async function with RenderResult return type UI hook pattern: useContentJob(companyId) — accept companyId as parameter (not from context) matching other hooks in codebase	DIAG-01 DIAG-02 ICON-01 THEME-01	15min	2026-04-04

Phase 41 Plan 01: Foundation — Shared Types, Deps, Job Runner, UI Hook Summary

culori/resvg/svgo deps installed, RenderResult bundle types defined, content-job-runner wired to diagram/icon-set/theme-palette switch, and useContentJob SSE hook ready for UI plans

Performance

• Duration: ~15 min
• Started: 2026-04-04T20:30:00Z
• Completed: 2026-04-04T20:45:00Z
• Tasks: 2
• Files modified: 9

Accomplishments

• All 5 server deps (culori, @resvg/resvg-js, wcag-contrast, svgo, playwright-core@1.58.2) installed and verified importable via tsx
• Bundle type contracts (RenderResult, DiagramBundle, IconSetBundle, ThemePaletteBundle) defined as stable API for all Phase 41 renderers
• content-job-runner.ts renderContent stub replaced with dynamic import switch dispatching to three renderer files
• useContentJob hook with SSE progress tracking, EventSource cleanup on unmount/done/failed
• shadcn progress and toggle components added to UI

Task Commits

1. Task 1: Install dependencies and add shadcn components - f3c08690 (feat)
2. Task 2: Shared types, content-job-runner switch, useContentJob hook, API helpers - 39af92c6 (feat)

Files Created/Modified

• server/src/services/renderers/types.ts - Shared bundle type contracts for all renderers
• server/src/services/renderers/diagram-renderer.ts - Stub (tsc resolution; Phase 41-02 implements)
• server/src/services/renderers/icon-renderer.ts - Stub (tsc resolution; Phase 41-03 implements)
• server/src/services/renderers/theme-renderer.ts - Stub (tsc resolution; Phase 41-04 implements)
• server/src/services/content-job-runner.ts - Replaced stub renderContent with switch dispatch
• ui/src/api/contentJobs.ts - submitContentJob, getContentJob, getContentJobAsset
• ui/src/hooks/useContentJob.ts - submit/reset, SSE EventSource progress tracking
• ui/src/components/ui/progress.tsx - shadcn Progress component
• ui/src/components/ui/toggle.tsx - shadcn Toggle component
• server/package.json - Added 5 new dependencies
• pnpm-lock.yaml - Updated lockfile

Decisions Made

• Created stub renderer files (diagram-renderer.ts, icon-renderer.ts, theme-renderer.ts) to satisfy TypeScript module resolution. The plan noted runtime failure is expected until renderers are implemented — tsc still requires the files exist for import() to resolve.
• playwright-core pinned at 1.58.2 to match @playwright/test version in root to avoid binary mismatch.

Deviations from Plan

Auto-fixed Issues

1. [Rule 2 - Missing Critical] Created renderer stub files for tsc resolution

• Found during: Task 2 (content-job-runner switch implementation)
• Issue: TypeScript's --noEmit check fails on dynamic imports to non-existent files even when the plan explicitly says runtime failure is expected
• Fix: Created minimal stub files exporting the expected function signatures with throw new Error("not yet implemented")
• Files modified: server/src/services/renderers/diagram-renderer.ts, icon-renderer.ts, theme-renderer.ts
• Verification: pnpm tsc --noEmit --project server/tsconfig.json passes with exit 0
• Committed in: 39af92c6 (Task 2 commit)

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Total deviations: 1 auto-fixed (Rule 2 - missing for correctness) Impact on plan: Necessary for tsc verification criterion. Stubs are clearly marked and will be replaced by plans 02-04.

Issues Encountered

• Pre-existing TypeScript errors exist in ui/tsconfig.json (unrelated files: AgentConfigForm.tsx, useKeyboardShortcuts.ts, useNexusMode.ts, usePiperTts.ts, useVadRecorder.ts, InstanceGeneralSettings.tsx, PersonalAssistant.tsx). These are out-of-scope pre-existing issues, not caused by this plan. Server TSC passes cleanly.

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Plans 41-02 (diagram renderer), 41-03 (icon renderer), 41-04 (theme renderer) can now import from ./renderers/types.js and implement their functions against the stub signatures
• useContentJob hook ready for consumption by UI plans 41-05 and 41-06
• All deps available: culori for OKLCH color math, @resvg/resvg-js for SVG→PNG, svgo for SVG optimization, wcag-contrast for WCAG AA checks

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Phase: 41-diagrams-icons-theme-engine Completed: 2026-04-04