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nexus/.planning/milestones/v1.3-phases/26-pwa-performance/26-00-SUMMARY.md
Nexus Dev ffc7b130e4 chore: archive v1.3 phase directories to milestones/ 
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-04 03:55:48 +00:00

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phase: 26-pwa-performance plan: 00 subsystem: ui tags: [pwa, service-worker, cache-first, idb, web-push, vitest, typescript]

Dependency graph

requires: [] provides:

  • Cache-first service worker (nexus-v1) replacing old network-first paperclip-v2
  • Web push notification handler in service worker
  • BeforeInstallPromptEvent TypeScript type declaration
  • idb installed in @paperclipai/ui
  • web-push + @types/web-push installed in @paperclipai/server
  • Wave 0 test stubs for useOfflineQueue, useInstallPrompt, usePushNotifications, PullToRefresh affects:
  • 26-pwa-performance (plans 01-04 depend on this foundation)

Tech tracking

tech-stack: added: [idb@8.0.3, web-push@3.6.7, @types/web-push@3.6.4] patterns: - Cache-first strategy for static assets and navigation via service worker - it.todo() test stubs for Wave 0 scaffolding (Phase 21-25 convention) - @vitest-environment jsdom pragma for component test files

key-files: created: - ui/src/types/pwa.d.ts - ui/src/hooks/useOfflineQueue.test.ts - ui/src/hooks/useInstallPrompt.test.ts - ui/src/hooks/usePushNotifications.test.ts - ui/src/components/PullToRefresh.test.tsx modified: - ui/public/sw.js - ui/package.json - server/package.json - pnpm-lock.yaml

key-decisions:

  • "Cache name changed from paperclip-v2 to nexus-v1; activate event deletes all non-nexus-v1 caches to bust stale entries"
  • "API paths (/api/*) pass through without SW interception — network-only for all API traffic"
  • "Push event handler uses /android-chrome-192x192.png as default icon and /favicon-32x32.png as badge"

patterns-established:

  • "SW fetch handler: API passthrough first, then navigate cache-first, then static-extension cache-first, then passthrough"
  • "Wave 0 test stubs: minimal imports, it.todo() only, no mocks until implementation plans"

requirements-completed: [PWA-01, PWA-07, PERF-05]

Metrics

duration: 5min completed: 2026-04-02

Phase 26 Plan 00: PWA Performance Foundation Summary

Cache-first service worker with nexus-v1 cache, push/notificationclick handlers, idb + web-push installed, and 14 Wave 0 test stubs for PWA hooks and PullToRefresh

Performance

  • Duration: 5 min
  • Started: 2026-04-02T01:58:25Z
  • Completed: 2026-04-02T02:01:00Z
  • Tasks: 2
  • Files modified: 9

Accomplishments

  • Rewrote service worker from network-first (paperclip-v2) to cache-first (nexus-v1) strategy enabling PERF-05
  • Added push and notificationclick event handlers to the service worker for web push notifications
  • Created BeforeInstallPromptEvent TypeScript types for upcoming useInstallPrompt hook
  • Installed idb@8.0.3 and web-push@3.6.7 dependencies for Phase 26 plans
  • Created 4 Wave 0 test stub files with 14 it.todo() entries covering all PWA hooks and PullToRefresh component

Task Commits

  1. Task 1: Install dependencies, create PWA types, and rewrite service worker - 95ebf3d8 (feat)
  2. Task 2: Create Wave 0 test stubs for Phase 26 hooks and components - 8e7a3e2b (test)

Files Created/Modified

  • ui/public/sw.js - Rewritten: cache-first strategy with nexus-v1 cache, push and notificationclick handlers
  • ui/src/types/pwa.d.ts - Created: BeforeInstallPromptEvent interface and WindowEventMap augmentation
  • ui/src/hooks/useOfflineQueue.test.ts - Created: 4 it.todo() stubs
  • ui/src/hooks/useInstallPrompt.test.ts - Created: 4 it.todo() stubs
  • ui/src/hooks/usePushNotifications.test.ts - Created: 3 it.todo() stubs
  • ui/src/components/PullToRefresh.test.tsx - Created: 3 it.todo() stubs with @vitest-environment jsdom
  • ui/package.json - Added idb dependency
  • server/package.json - Added web-push + @types/web-push dependencies
  • pnpm-lock.yaml - Updated lockfile

Decisions Made

  • Cache name nexus-v1 replaces paperclip-v2; activate event deletes all caches with names not equal to nexus-v1 to bust stale versions
  • API requests (/api/*) are excluded from SW interception entirely (network-only)
  • Push handler defaults: icon=/android-chrome-192x192.png, badge=/favicon-32x32.png

Deviations from Plan

None - plan executed exactly as written.

One minor cleanup: a comment in sw.js initially contained "paperclip-v2" as a reference. Removed the word to satisfy acceptance criteria (grep "paperclip" ui/public/sw.js returns 0).

Issues Encountered

None.

User Setup Required

None - no external service configuration required.

Next Phase Readiness

  • Service worker foundation ready for Phase 26 plans 01-04
  • idb available for useOfflineQueue hook implementation (plan 01)
  • web-push available for push subscription API (plan 03)
  • All Wave 0 test stubs provide TDD RED targets for subsequent implementation plans
  • 14 todos confirmed passing in vitest run (todos are not failures)

Self-Check: PASSED

All created files verified:

  • FOUND: ui/public/sw.js
  • FOUND: ui/src/types/pwa.d.ts
  • FOUND: ui/src/hooks/useOfflineQueue.test.ts
  • FOUND: ui/src/hooks/useInstallPrompt.test.ts
  • FOUND: ui/src/hooks/usePushNotifications.test.ts
  • FOUND: ui/src/components/PullToRefresh.test.tsx
  • FOUND: .planning/phases/26-pwa-performance/26-00-SUMMARY.md

All commits verified:

  • FOUND: 95ebf3d8 (Task 1)
  • FOUND: 8e7a3e2b (Task 2)

Phase: 26-pwa-performance Completed: 2026-04-02