---
phase: 43-documents-branding
plan: 02
subsystem: api
tags: [brand-renderer, archiver, playwright, sharp, svgo, puter-inference, typescript, zip]

# Dependency graph
requires:
  - phase: 43-01
    provides: archiver package installed, BrandKitBundle type in types.ts, content-job-runner switch pattern

provides:
  - brand-renderer.ts — renderBrandKit function with 7-step orchestration
  - brand-kit jobType wired in content-job-runner switch
  - 7 unit tests covering all BrandKitBundle fields

affects:
  - 43-03 (brand kit UI panel will import BrandKitBundle type and use brand-kit jobType)

# Tech tracking
tech-stack:
  added: []
  patterns:
    - 7-step brand kit orchestration: spec extraction → logo SVG → avatar rasterization → social images → email+letterhead templates → guidelines PDF → ZIP
    - Single Playwright browser instance per brand kit job (open once, use for PDF, try/finally close)
    - Social images as SVG templates (colored rect + embedded logo as data URI), NOT LLM-generated — keeps fast and predictable
    - archiver streaming ZIP via Writable sink, resolve on sink finish event (Pattern 3 from RESEARCH.md)
    - stripMarkdownFences duplicated locally (same approach as pdf-renderer.ts — wallpaper-renderer doesn't export it)

key-files:
  created:
    - server/src/services/renderers/brand-renderer.ts
    - server/src/__tests__/brand-renderer.test.ts
  modified:
    - server/src/services/content-job-runner.ts

key-decisions:
  - "Social images are SVG templates (colored rect + embedded logo) rather than LLM-generated — keeps generation fast and deterministic"
  - "Playwright browser opened once per brand kit job for guidelines PDF — reuses browser instance to avoid spawning multiple processes"
  - "pnpm install run as deviation fix — archiver was in package.json (added by Plan 01) but node_modules not populated in this worktree"

# Metrics
duration: 4min
completed: 2026-04-04
---

# Phase 43 Plan 02: Brand Kit Renderer Summary

**Full brand identity kit renderer orchestrating logo SVG, 5 avatar sizes, 5 social platform images, email signature HTML, letterhead HTML, guidelines PDF, and ZIP packaging via archiver**

## Performance

- **Duration:** ~4 min
- **Started:** 2026-04-04T22:47:34Z
- **Completed:** 2026-04-04T22:50:30Z
- **Tasks:** 2
- **Files modified:** 3

## Accomplishments

- Created brand-renderer.ts with renderBrandKit: 7-step orchestration producing a complete BrandKitBundle
- extractBrandSpec: LLM JSON extraction with fallback defaults
- generateLogoSvg: LLM SVG generation cleaned via validateAndCleanSvg (SVGO)
- rasterizeAvatars: sharp rasterizes logo to 5 PNG sizes (512/256/128/64/32)
- generateSocialImages: SVG template per platform (colored bg + logo), 5 platforms
- generateTemplates: 2 parallel LLM calls for email signature + letterhead HTML
- generateGuidelinesPdf: Playwright HTML→PDF with single shared browser instance
- buildZip: archiver streaming ZIP with correct folder structure (brand-kit/logo/, brand-kit/social/, brand-kit/templates/, brand-kit/guidelines.pdf)
- 7 unit tests pass covering all BrandKitBundle fields and ZIP magic bytes verification
- Wired brand-kit jobType in content-job-runner switch with dynamic import

## Task Commits

Each task was committed atomically:

1. **Task 1: Create brand-renderer with orchestrated sub-renders and ZIP packaging** - `cd753612` (feat)
2. **Task 2: Wire brand-kit jobType into content-job-runner** - `e059a0da` (feat)

## Files Created/Modified

- `server/src/services/renderers/brand-renderer.ts` - renderBrandKit with 7-step orchestration
- `server/src/__tests__/brand-renderer.test.ts` - 7 unit tests with all required mocks
- `server/src/services/content-job-runner.ts` - brand-kit case added to renderContent switch

## Decisions Made

- Social images use SVG templates (colored rect + base64-embedded logo) rather than LLM-generated artwork — this is fast, deterministic, and always on-brand
- Playwright browser is opened once for the brand kit job (for the guidelines PDF step) using a try/finally block — avoids spawning multiple browser processes for what is a single-shot job
- archiver was already in package.json from Plan 01 but not installed in this worktree — ran pnpm install as a deviation fix

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 3 - Blocking] archiver package not installed in node_modules**
- **Found during:** Task 2 (tsc --noEmit check)
- **Issue:** archiver and @types/archiver were added to server/package.json by Plan 01 but pnpm install had not been run in this worktree, causing TS2307 "Cannot find module 'archiver'"
- **Fix:** Ran `pnpm install` at the monorepo root — resolved 65 packages including archiver and @types/archiver
- **Files modified:** none (lockfile already had archiver)

## Known Stubs

None — all BrandKitBundle fields are populated with real data (LLM-generated or sharp-rasterized).

## Issues Encountered

- archiver not installed in worktree node_modules (fixed by pnpm install)

## User Setup Required

None - no external service configuration required beyond PUTER_AUTH_TOKEN already documented.

## Next Phase Readiness

- Plan 43-03 (document/brand UI panel) can now use brand-kit jobType and BrandKitBundle type
- All 7 tests pass, TypeScript clean for all modified files

---
*Phase: 43-documents-branding*
*Completed: 2026-04-04*

## Self-Check: PASSED

- brand-renderer.ts: FOUND
- brand-renderer.test.ts: FOUND
- SUMMARY.md: FOUND
- Task 1 commit cd753612: FOUND
- Task 2 commit e059a0da: FOUND
