docs(26-03): complete PWA install prompt, offline banner, and message queue plan
- InstallPromptBanner: 7-day cooldown, iOS fallback, beforeinstallprompt CTA - OfflineBanner: amber theming, queue count, 3s auto-dismiss on reconnect - useOfflineQueue: IndexedDB nexus-offline/message_queue, flush on online event - ChatPanel: offline guard in handleSend, OfflineBanner + InstallPromptBanner wired - Requirements PWA-01, PWA-02, PWA-08 marked complete
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Nexus Dev
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@ -60,9 +60,9 @@
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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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- [x] **PWA-03** — Responsive layout: adapts to phone, tablet, and desktop screen sizes
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- [x] **PWA-04** — Mobile-optimized input: large touch targets, sticky input bar at bottom, keyboard-aware resize
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- [x] **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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- [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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@ -154,9 +154,9 @@ The following are explicitly deferred:
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| HIST-06 | Phase 21 | Complete |
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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-03 | Phase 26 | Complete |
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| PWA-04 | Phase 26 | Complete |
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| PWA-05 | Phase 26 | Complete |
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| PWA-06 | 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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139
.planning/phases/26-pwa-performance/26-03-SUMMARY.md
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139
.planning/phases/26-pwa-performance/26-03-SUMMARY.md
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---
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phase: 26-pwa-performance
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plan: 03
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subsystem: ui
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tags: [pwa, offline, indexeddb, idb, install-prompt, service-worker, react-hooks]
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requires:
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- phase: 26-00
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provides: idb dependency installed, pwa.d.ts types, BeforeInstallPromptEvent interface
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- phase: 26-02
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provides: ChatPanel with MobileChatView mobile/desktop split, useMediaQuery hook
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provides:
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- useOnlineStatus hook — reactive navigator.onLine boolean
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- useInstallPrompt hook — captures beforeinstallprompt, iOS detection, promptInstall()
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- useOfflineQueue hook — IndexedDB message queue with auto-flush on online event
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- InstallPromptBanner component — PWA install CTA with iOS fallback and 7-day dismiss cooldown
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- OfflineBanner component — amber offline status with queued message count
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- ChatPanel offline integration — enqueues messages when offline via useOfflineQueue
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affects: [26-04, ChatPanel, MobileChatView, pwa-push-notifications]
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tech-stack:
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added: ["idb@^8.0.3"]
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patterns:
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- "useOfflineQueue uses openDB with autoIncrement store for message replay"
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- "OfflineBanner uses dark: prefix for light/dark amber theme switching"
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- "InstallPromptBanner checks localStorage timestamp for 7-day cooldown"
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- "handleSend in ChatPanel guards on isOnline before proceeding to network calls"
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key-files:
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created:
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- ui/src/hooks/useOnlineStatus.ts
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- ui/src/hooks/useInstallPrompt.ts
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- ui/src/hooks/useOfflineQueue.ts
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- ui/src/components/InstallPromptBanner.tsx
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- ui/src/components/OfflineBanner.tsx
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- ui/src/types/pwa.d.ts
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modified:
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- ui/src/components/ChatPanel.tsx
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- ui/package.json
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- pnpm-lock.yaml
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key-decisions:
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- "idb + pwa.d.ts added inline in this plan — parallel 26-00 worktree commits were not on gsd/phase-26-pwa-performance branch"
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- "OfflineBanner uses dark: Tailwind prefix for amber light/dark theming — consistent with design system approach"
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- "ChatPanel offline guard only enqueues when activeConversationId exists — new conversation creation requires network"
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- "useOfflineQueue flush stops on first failure — prevents partial replay; retries on next online event"
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patterns-established:
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- "Offline-first guard at handleSend entry: check isOnline before any network operation"
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- "IndexedDB queue pattern: openDB with autoIncrement, getAllKeys/get/delete for sequential flush"
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requirements-completed: [PWA-01, PWA-02, PWA-08]
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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 03: PWA Install Prompt, Offline Banner, and Message Queue Summary
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**PWA install prompt with iOS fallback, amber offline status banner, and IndexedDB message queue that auto-flushes on reconnection**
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## Performance
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- **Duration:** ~5 min
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- **Started:** 2026-04-02T02:15:40Z
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- **Completed:** 2026-04-02T02:20:35Z
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- **Tasks:** 2
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- **Files modified:** 8
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## Accomplishments
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- Created three production hooks: `useOnlineStatus` (reactive online state), `useInstallPrompt` (captures beforeinstallprompt + iOS detection), `useOfflineQueue` (IndexedDB-backed queue with auto-flush)
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- Built `InstallPromptBanner` component with 7-day localStorage dismiss cooldown, iOS Share menu instruction text, and "Add to Home Screen" CTA
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- Built `OfflineBanner` component with amber theming (dark/light), queued message count display, and 3-second auto-dismiss on reconnection
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- Wired `ChatPanel` to enqueue messages to IndexedDB when offline and display a queued toast notification
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## Task Commits
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1. **Task 1: useOnlineStatus, useInstallPrompt, useOfflineQueue hooks** - `2b172bda` (feat)
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2. **Task 2: InstallPromptBanner, OfflineBanner, ChatPanel wiring** - `427e6c80` (feat)
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## Files Created/Modified
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- `ui/src/hooks/useOnlineStatus.ts` — Reactive boolean from navigator.onLine with online/offline event listeners
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- `ui/src/hooks/useInstallPrompt.ts` — Captures beforeinstallprompt, iOS detection via userAgent, promptInstall() callback
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- `ui/src/hooks/useOfflineQueue.ts` — openDB nexus-offline/message_queue store, enqueue/flush with stop-on-failure strategy
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- `ui/src/components/InstallPromptBanner.tsx` — Fixed-position banner with 7-day localStorage cooldown and iOS text variant
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- `ui/src/components/OfflineBanner.tsx` — Fixed top-0 amber banner showing queue count, 3s auto-dismiss on reconnect
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- `ui/src/components/ChatPanel.tsx` — Added isOnline guard in handleSend, enqueue call, OfflineBanner and InstallPromptBanner renders
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- `ui/src/types/pwa.d.ts` — BeforeInstallPromptEvent interface with global WindowEventMap extension
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- `ui/package.json` — Added idb@^8.0.3 dependency
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## Decisions Made
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- `idb` and `pwa.d.ts` were added here as a deviation — the parallel 26-00 worktree commits were not merged into `gsd/phase-26-pwa-performance` branch
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- Offline guard in `handleSend` only enqueues when `activeConversationId` exists — creating a new conversation requires network, so we skip enqueue for that path
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- `useOfflineQueue.flush()` breaks on first failure — stops partial replay and retries on next `online` event
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## Deviations from Plan
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### Auto-fixed Issues
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**1. [Rule 3 - Blocking] Added idb dependency and pwa.d.ts that were missing from branch**
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- **Found during:** Task 1 (creating hooks)
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- **Issue:** The `gsd/phase-26-pwa-performance` branch was missing the `idb` package and `ui/src/types/pwa.d.ts` that were created in a parallel 26-00 worktree but never merged to the main phase branch
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- **Fix:** Added `idb@^8.0.3` to `ui/package.json`, ran `pnpm install`, created `ui/src/types/pwa.d.ts` with BeforeInstallPromptEvent interface
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- **Files modified:** ui/package.json, pnpm-lock.yaml, ui/src/types/pwa.d.ts
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- **Verification:** `import { openDB } from "idb"` compiles without errors
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- **Committed in:** `2b172bda` (Task 1 commit)
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---
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**Total deviations:** 1 auto-fixed (1 blocking)
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**Impact on plan:** Required for task completion. No scope creep.
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## Issues Encountered
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- Pre-existing TypeScript errors in `packages/shared` (`zod` module not found) and `packages/adapters` prevent `pnpm --filter @paperclipai/ui build` from passing at the workspace level, but `tsc -b` within the `ui` directory itself produces zero errors. These are pre-existing issues unrelated to this plan.
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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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- PWA install prompt, offline banner, and message queue all functional
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- `useOfflineQueue` relies on `chatApi.postMessage` for replay — the flush will restore messages when reconnected
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- Plan 26-04 (push notifications) can build on the same `useOnlineStatus` pattern
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## Self-Check: PASSED
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- FOUND: ui/src/hooks/useOnlineStatus.ts
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- FOUND: ui/src/hooks/useInstallPrompt.ts
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- FOUND: ui/src/hooks/useOfflineQueue.ts
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- FOUND: ui/src/components/InstallPromptBanner.tsx
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- FOUND: ui/src/components/OfflineBanner.tsx
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- FOUND: ui/src/types/pwa.d.ts
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- FOUND commit: 2b172bda (Task 1)
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- FOUND commit: 427e6c80 (Task 2)
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---
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*Phase: 26-pwa-performance*
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*Completed: 2026-04-02*
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