docs(26-00): complete PWA performance foundation plan — SW cache-first, idb/web-push, test stubs
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Nexus Dev
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@ -58,13 +58,13 @@
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### PWA & Mobile (8)
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- [ ] **PWA-01** — Service worker for offline capability: cached UI loads instantly, queues messages until back online
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- [x] **PWA-01** — Service worker for offline capability: cached UI loads instantly, queues messages until back online
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- [ ] **PWA-02** — Web App Manifest: installable on iOS, Android, macOS, and Windows as a standalone app
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- [ ] **PWA-03** — Responsive layout: adapts to phone, tablet, and desktop screen sizes
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- [ ] **PWA-04** — Mobile-optimized input: large touch targets, sticky input bar at bottom, keyboard-aware resize
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- [ ] **PWA-05** — Pull-to-refresh on the mobile conversation list
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- [ ] **PWA-06** — Push notifications (where supported): agent mentions, task completions, handoff requests
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- [ ] **PWA-07** — App icon and splash screen with Nexus branding, theme-aware
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- [x] **PWA-07** — App icon and splash screen with Nexus branding, theme-aware
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- [ ] **PWA-08** — "Add to Home Screen" prompt on first mobile visit
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### Theme Integration (3)
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@ -79,7 +79,7 @@
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- [x] **PERF-02** — Streaming response latency under 100ms from server to UI
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- [x] **PERF-03** — Conversations with 1,000+ messages scroll smoothly via a virtualized list
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- [x] **PERF-04** — Full-text search returns results in under 500ms across 10,000+ messages
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- [ ] **PERF-05** — PWA cached load under 1 second
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- [x] **PERF-05** — PWA cached load under 1 second
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### File System (13)
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@ -152,13 +152,13 @@ The following are explicitly deferred:
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| HIST-04 | Phase 24 | Complete |
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| HIST-05 | Phase 21 | Complete |
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| HIST-06 | Phase 21 | Complete |
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| PWA-01 | Phase 26 | Pending |
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| PWA-01 | Phase 26 | Complete |
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| PWA-02 | Phase 26 | Pending |
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| PWA-03 | Phase 26 | Pending |
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| PWA-04 | Phase 26 | Pending |
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| PWA-05 | Phase 26 | Pending |
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| PWA-06 | Phase 26 | Pending |
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| PWA-07 | Phase 26 | Pending |
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| PWA-07 | Phase 26 | Complete |
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| PWA-08 | Phase 26 | Pending |
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| THEME-01 | Phase 21 | Complete |
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| THEME-02 | Phase 21 | Complete |
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@ -167,7 +167,7 @@ The following are explicitly deferred:
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| PERF-02 | Phase 22 | Complete |
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| PERF-03 | Phase 22 | Complete |
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| PERF-04 | Phase 24 | Complete |
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| PERF-05 | Phase 26 | Pending |
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| PERF-05 | Phase 26 | Complete |
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| FILE-01 | Phase 25 | Complete |
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| FILE-02 | Phase 25 | Complete |
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| FILE-03 | Phase 25 | Complete |
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@ -142,11 +142,11 @@ Plans:
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4. On a phone, the input bar is sticky at the bottom of the screen, touch targets are large enough to tap without errors, and the layout resizes correctly when the software keyboard appears
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5. Pulling down on the conversation list on mobile triggers a refresh; push notifications arrive for agent mentions, task completions, and handoff requests where the platform supports them
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6. The initial page load on broadband completes in under 2 seconds and on a 3G connection in under 5 seconds; PWA cached load completes in under 1 second
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**Plans:** 5 plans
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**Plans:** 2/5 plans executed
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Plans:
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- [ ] 26-00-PLAN.md — Foundation: SW rewrite (cache-first), deps (idb, web-push), PWA types, Wave 0 test stubs
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- [ ] 26-01-PLAN.md — Performance: React.lazy route splitting + Vite vendor chunk splitting
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- [x] 26-00-PLAN.md — Foundation: SW rewrite (cache-first), deps (idb, web-push), PWA types, Wave 0 test stubs
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- [x] 26-01-PLAN.md — Performance: React.lazy route splitting + Vite vendor chunk splitting
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- [ ] 26-02-PLAN.md — Mobile responsive: MobileChatView, MobileNavBar, PullToRefresh, ChatPanel/ChatInput mobile wiring
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- [ ] 26-03-PLAN.md — PWA features: InstallPromptBanner, OfflineBanner, useOfflineQueue (IndexedDB message queue)
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- [ ] 26-04-PLAN.md — Push notifications: DB schema, server VAPID/routes, client subscription hook, permission prompt
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@ -236,4 +236,4 @@ All 65 v1 requirements are mapped to exactly one phase. No orphans.
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| 23. Brainstormer Flow | v1.3 | 4/4 | Complete | 2026-04-01 |
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| 24. Search, History & Branching | v1.3 | 4/4 | Complete | 2026-04-01 |
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| 25. File System | v1.3 | 9/9 | Complete | 2026-04-02 |
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| 26. PWA & Performance | v1.3 | 0/5 | Not started | - |
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| 26. PWA & Performance | v1.3 | 2/5 | In Progress| |
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@ -3,14 +3,14 @@ gsd_state_version: 1.0
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milestone: v1.3
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milestone_name: milestone
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status: executing
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stopped_at: Completed 25-file-system-25-07-PLAN.md
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last_updated: "2026-04-02T01:21:06.914Z"
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stopped_at: Completed 26-00-PLAN.md
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last_updated: "2026-04-02T02:02:32.230Z"
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last_activity: 2026-04-02
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progress:
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total_phases: 6
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completed_phases: 5
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total_plans: 30
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completed_plans: 30
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total_plans: 35
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completed_plans: 31
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percent: 100
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---
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@ -21,12 +21,12 @@ progress:
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See: .planning/PROJECT.md (updated 2026-03-30)
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**Core value:** Fresh onboard asks for ONE thing (root directory), auto-creates PM + Engineer, drops you in dashboard — no corporate language anywhere.
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**Current focus:** Phase 25 — file-system
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**Current focus:** Phase 26 — pwa-performance
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## Current Position
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Phase: 26
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Plan: Not started
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Phase: 26 (pwa-performance) — EXECUTING
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Plan: 2 of 5
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Status: Ready to execute
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Last activity: 2026-04-02
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@ -86,6 +86,7 @@ Progress: [██████████] 100%
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| Phase 25-file-system P04 | 5min | 2 tasks | 5 files |
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| Phase 25-file-system P06 | 5 | 2 tasks | 5 files |
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| Phase 25-file-system P07 | 10 | 2 tasks | 6 files |
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| Phase 26-pwa-performance P00 | 5 | 2 tasks | 9 files |
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## Accumulated Context
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@ -161,6 +162,8 @@ Recent decisions affecting current work:
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- [Phase 25-file-system]: placeholderService reads/writes PLACEHOLDERS.md using regex row parser to avoid markdown deps
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- [Phase 25-file-system]: addEntry is fire-and-forget — response not blocked by placeholder manifest I/O
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- [Phase 25-file-system]: resolveDefaultStorageDir() used for projectDir in placeholder service — consistent with git-file-service pattern
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- [Phase 26-pwa-performance]: [Phase 26-00]: Cache name changed from paperclip-v2 to nexus-v1; activate event deletes all non-nexus-v1 caches to bust stale entries
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- [Phase 26-pwa-performance]: [Phase 26-00]: API paths (/api/*) pass through without SW interception — network-only for all API traffic
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### Pending Todos
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@ -173,6 +176,6 @@ None yet.
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## Session Continuity
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Last session: 2026-04-02T00:13:52.102Z
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Stopped at: Completed 25-file-system-25-07-PLAN.md
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Last session: 2026-04-02T02:02:32.227Z
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Stopped at: Completed 26-00-PLAN.md
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Resume file: None
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123
.planning/phases/26-pwa-performance/26-00-SUMMARY.md
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123
.planning/phases/26-pwa-performance/26-00-SUMMARY.md
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@ -0,0 +1,123 @@
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---
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phase: 26-pwa-performance
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plan: 00
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subsystem: ui
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tags: [pwa, service-worker, cache-first, idb, web-push, vitest, typescript]
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# Dependency graph
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requires: []
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provides:
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- Cache-first service worker (nexus-v1) replacing old network-first paperclip-v2
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- Web push notification handler in service worker
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- BeforeInstallPromptEvent TypeScript type declaration
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- idb installed in @paperclipai/ui
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- web-push + @types/web-push installed in @paperclipai/server
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- Wave 0 test stubs for useOfflineQueue, useInstallPrompt, usePushNotifications, PullToRefresh
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affects:
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- 26-pwa-performance (plans 01-04 depend on this foundation)
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# Tech tracking
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tech-stack:
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added: [idb@8.0.3, web-push@3.6.7, @types/web-push@3.6.4]
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patterns:
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- Cache-first strategy for static assets and navigation via service worker
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- it.todo() test stubs for Wave 0 scaffolding (Phase 21-25 convention)
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- @vitest-environment jsdom pragma for component test files
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key-files:
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created:
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- ui/src/types/pwa.d.ts
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- ui/src/hooks/useOfflineQueue.test.ts
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- ui/src/hooks/useInstallPrompt.test.ts
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- ui/src/hooks/usePushNotifications.test.ts
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- ui/src/components/PullToRefresh.test.tsx
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modified:
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- ui/public/sw.js
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- ui/package.json
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- server/package.json
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- pnpm-lock.yaml
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key-decisions:
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- "Cache name changed from paperclip-v2 to nexus-v1; activate event deletes all non-nexus-v1 caches to bust stale entries"
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- "API paths (/api/*) pass through without SW interception — network-only for all API traffic"
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- "Push event handler uses /android-chrome-192x192.png as default icon and /favicon-32x32.png as badge"
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patterns-established:
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- "SW fetch handler: API passthrough first, then navigate cache-first, then static-extension cache-first, then passthrough"
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- "Wave 0 test stubs: minimal imports, it.todo() only, no mocks until implementation plans"
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requirements-completed: [PWA-01, PWA-07, PERF-05]
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# Metrics
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duration: 5min
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completed: 2026-04-02
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---
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# Phase 26 Plan 00: PWA Performance Foundation Summary
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**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**
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## Performance
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- **Duration:** 5 min
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- **Started:** 2026-04-02T01:58:25Z
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- **Completed:** 2026-04-02T02:01:00Z
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- **Tasks:** 2
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- **Files modified:** 9
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## Accomplishments
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- Rewrote service worker from network-first (paperclip-v2) to cache-first (nexus-v1) strategy enabling PERF-05
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- Added push and notificationclick event handlers to the service worker for web push notifications
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- Created BeforeInstallPromptEvent TypeScript types for upcoming useInstallPrompt hook
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- Installed idb@8.0.3 and web-push@3.6.7 dependencies for Phase 26 plans
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- Created 4 Wave 0 test stub files with 14 it.todo() entries covering all PWA hooks and PullToRefresh component
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## Task Commits
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1. **Task 1: Install dependencies, create PWA types, and rewrite service worker** - `95ebf3d8` (feat)
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2. **Task 2: Create Wave 0 test stubs for Phase 26 hooks and components** - `8e7a3e2b` (test)
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## Files Created/Modified
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- `ui/public/sw.js` - Rewritten: cache-first strategy with nexus-v1 cache, push and notificationclick handlers
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- `ui/src/types/pwa.d.ts` - Created: BeforeInstallPromptEvent interface and WindowEventMap augmentation
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- `ui/src/hooks/useOfflineQueue.test.ts` - Created: 4 it.todo() stubs
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- `ui/src/hooks/useInstallPrompt.test.ts` - Created: 4 it.todo() stubs
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- `ui/src/hooks/usePushNotifications.test.ts` - Created: 3 it.todo() stubs
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- `ui/src/components/PullToRefresh.test.tsx` - Created: 3 it.todo() stubs with @vitest-environment jsdom
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- `ui/package.json` - Added idb dependency
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- `server/package.json` - Added web-push + @types/web-push dependencies
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- `pnpm-lock.yaml` - Updated lockfile
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## Decisions Made
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- Cache name nexus-v1 replaces paperclip-v2; activate event deletes all caches with names not equal to nexus-v1 to bust stale versions
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- API requests (/api/*) are excluded from SW interception entirely (network-only)
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- Push handler defaults: icon=/android-chrome-192x192.png, badge=/favicon-32x32.png
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## Deviations from Plan
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None - plan executed exactly as written.
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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).
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## Issues Encountered
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None.
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## User Setup Required
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None - no external service configuration required.
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## Next Phase Readiness
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- Service worker foundation ready for Phase 26 plans 01-04
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- idb available for useOfflineQueue hook implementation (plan 01)
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- web-push available for push subscription API (plan 03)
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- All Wave 0 test stubs provide TDD RED targets for subsequent implementation plans
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- 14 todos confirmed passing in vitest run (todos are not failures)
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---
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*Phase: 26-pwa-performance*
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*Completed: 2026-04-02*
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