Add client-side watch/bookmark functionality: users can save events to localStorage without RSVPing via a bookmark button next to the "I'm attending" CTA. Watched events appear in the event list with a "Watching" label. Bookmark is only visible for visitors (not attendees or organizers). Includes spec, plan, research, tasks, unit tests, and E2E tests. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
3.2 KiB
Implementation Plan: Watch Event
Branch: 017-watch-event | Date: 2026-03-12 | Spec: spec.md
Input: Feature specification from /specs/017-watch-event/spec.md
Summary
Add a bookmark icon to the event detail page (left of event title) that lets users save events to localStorage without RSVPing. Watched events appear in the event list with a "Watching" label. The feature is entirely client-side — no backend changes required.
Technical Context
Language/Version: TypeScript 5.9 (frontend only)
Primary Dependencies: Vue 3, Vue Router 5
Storage: localStorage via useEventStorage.ts composable (existing)
Testing: Vitest for unit tests, Playwright + MSW for E2E
Target Platform: Mobile-first PWA (browser)
Project Type: Web application (frontend-only change)
Performance Goals: Instant toggle (no network requests)
Constraints: No backend involvement, no new dependencies
Scale/Scope: 4 modified files, 0 new files
Constitution Check
GATE: Must pass before Phase 0 research. Re-check after Phase 1 design.
| Principle | Status | Notes |
|---|---|---|
| I. Privacy by Design | PASS | No data sent to server. Watch is purely localStorage. No tracking. |
| II. Test-Driven Methodology | PASS | Unit tests for composable changes, E2E tests for user stories. |
| III. API-First Development | PASS | No API changes needed. Feature is client-side only. |
| IV. Simplicity & Quality | PASS | Minimal changes to existing code. No new abstractions. |
| V. Dependency Discipline | PASS | No new dependencies introduced. |
| VI. Accessibility | PASS | Bookmark icon will use semantic button/ARIA, keyboard-operable. |
No violations. Gate passes.
Project Structure
Documentation (this feature)
specs/017-watch-event/
├── plan.md # This file
├── spec.md # Feature specification
├── research.md # Phase 0 output
├── data-model.md # Phase 1 output
├── quickstart.md # Phase 1 output
└── tasks.md # Phase 2 output (/speckit.tasks)
Source Code (files to modify)
frontend/src/
├── composables/
│ ├── useEventStorage.ts # Add saveWatch(), isStored() methods
│ └── __tests__/
│ └── useEventStorage.spec.ts # Tests for new methods
├── components/
│ ├── EventCard.vue # Add 'watcher' role + badge styling
│ ├── EventList.vue # Update getRole() to return 'watcher', adjust delete flow
│ └── __tests__/
│ ├── EventCard.spec.ts # Tests for watcher badge
│ └── EventList.spec.ts # Tests for watcher delete behavior
├── views/
│ ├── EventDetailView.vue # Add bookmark icon next to title
│ └── __tests__/
│ └── EventDetailView.spec.ts # Tests for bookmark behavior
└── e2e/
└── watch-event.spec.ts # E2E tests for all user stories
Structure Decision: Frontend-only changes. No new files needed — all modifications go into existing components and composables. One new E2E test file.
Complexity Tracking
No constitution violations. No complexity justifications needed.