---
phase: 01-tournament-engine
plan: 10
subsystem: ui
tags: [sveltekit, svelte5, catppuccin, websocket, spa, typescript]

# Dependency graph
requires:
  - phase: 01-tournament-engine
    provides: Go binary scaffold with embed.go, WebSocket hub, JWT auth middleware
provides:
  - SvelteKit SPA scaffold with adapter-static and SPA fallback
  - Catppuccin Mocha/Latte CSS theme with semantic color tokens
  - WebSocket client with auto-reconnect and exponential backoff
  - HTTP API client with JWT auth and 401 redirect
  - Auth state store (Svelte 5 runes) with localStorage persistence
  - Tournament state store (Svelte 5 runes) with WS message routing
  - PIN login page with numpad and 48px touch targets
  - Makefile frontend target for real SvelteKit build
affects: [01-11, 01-13, 01-14]

# Tech tracking
tech-stack:
  added: [sveltekit, svelte5, adapter-static, vite, typescript, catppuccin]
  patterns: [svelte5-runes-state, spa-mode-no-ssr, css-custom-properties-theming, ws-reconnect-backoff, api-client-with-auth]

key-files:
  created:
    - frontend/package.json
    - frontend/svelte.config.js
    - frontend/vite.config.ts
    - frontend/tsconfig.json
    - frontend/src/app.html
    - frontend/src/app.css
    - frontend/src/lib/theme/catppuccin.css
    - frontend/src/lib/ws.ts
    - frontend/src/lib/api.ts
    - frontend/src/lib/stores/auth.svelte.ts
    - frontend/src/lib/stores/tournament.svelte.ts
    - frontend/src/routes/+layout.ts
    - frontend/src/routes/+layout.svelte
    - frontend/src/routes/+page.svelte
    - frontend/src/routes/login/+page.svelte
  modified:
    - Makefile

key-decisions:
  - "Added type:module to package.json for ESM compatibility with SvelteKit/Vite"
  - "Build output (frontend/build/) tracked in git for go:embed — not gitignored"
  - "Catppuccin colors defined as CSS custom properties with semantic mappings rather than using @catppuccin/palette JS package"

patterns-established:
  - "Svelte 5 runes: class-based state with $state/$derived, exported as singletons"
  - "CSS custom properties: --ctp-* for raw colors, --color-* for semantic usage"
  - "WebSocket: singleton client with event handlers and auto-reconnect"
  - "API client: auto-detect base URL, auto-attach JWT, 401 clears auth"
  - "48px minimum touch targets via CSS (.touch-target, button, role=button)"

requirements-completed: [UI-05, UI-06]

# Metrics
duration: 5min
completed: 2026-03-01
---

# Plan 10: SvelteKit Frontend Scaffold + Theme + Clients Summary

**SvelteKit SPA with Catppuccin Mocha dark theme, WebSocket/HTTP clients, Svelte 5 runes state stores, and PIN login page**

## Performance

- **Duration:** 5 min
- **Started:** 2026-03-01T02:49:15Z
- **Completed:** 2026-03-01T02:54:37Z
- **Tasks:** 1 (single compound task with 8 sub-items)
- **Files modified:** 43

## Accomplishments
- SvelteKit project initialized with adapter-static SPA mode, builds to frontend/build/
- Catppuccin Mocha (dark) and Latte (light) themes with 26 base colors + semantic tokens + poker-specific colors
- WebSocket client with exponential backoff reconnect (1s-30s), connection state tracking, message routing
- HTTP API client with auto JWT auth, 401 redirect to login, typed error handling
- Auth state (Svelte 5 runes) with localStorage persistence, role-based access checks
- Tournament state (Svelte 5 runes) handles clock, players, tables, financials, activity, rankings, balance
- PIN login page with large numpad buttons, masked dot display, keyboard support, error states
- Makefile updated: `make frontend` runs real SvelteKit build, `make all` builds frontend then Go binary

## Task Commits

Each task was committed atomically:

1. **Task J1: Initialize SvelteKit project with theme, WS client, API client, stores, login page, Makefile** - `47e1f19` (feat)

## Files Created/Modified
- `frontend/package.json` - SvelteKit project config with ESM type
- `frontend/svelte.config.js` - adapter-static with SPA fallback
- `frontend/vite.config.ts` - Vite config with SvelteKit plugin
- `frontend/tsconfig.json` - TypeScript config extending SvelteKit
- `frontend/src/app.html` - HTML shell with data-theme="mocha"
- `frontend/src/app.css` - Reset, touch targets, scrollbars, utilities
- `frontend/src/lib/theme/catppuccin.css` - Mocha/Latte themes with semantic tokens
- `frontend/src/lib/ws.ts` - WebSocket client with reconnect and backoff
- `frontend/src/lib/api.ts` - HTTP API client with JWT auth
- `frontend/src/lib/stores/auth.svelte.ts` - Auth state with localStorage
- `frontend/src/lib/stores/tournament.svelte.ts` - Tournament state with WS message handling
- `frontend/src/routes/+layout.ts` - SPA mode (prerender=true, ssr=false)
- `frontend/src/routes/+layout.svelte` - Root layout importing app.css
- `frontend/src/routes/+page.svelte` - Home page with auth redirect
- `frontend/src/routes/login/+page.svelte` - PIN login page with numpad
- `Makefile` - Updated frontend target for real SvelteKit build

## Decisions Made
- Used CSS custom properties for Catppuccin instead of @catppuccin/palette JS package — simpler, no runtime dependency, works with data-theme attribute switching
- Added `"type": "module"` to package.json — required for ESM-only SvelteKit/Vite packages
- frontend/build/ tracked in git (not gitignored) — required by Go's embed.go for go:embed directive
- Defined all Catppuccin colors directly in CSS rather than importing from npm — avoids build complexity and runtime overhead

## Deviations from Plan

### Auto-fixed Issues

**1. [Rule 3 - Blocking] Added "type": "module" to package.json**
- **Found during:** Task J1 (SvelteKit build)
- **Issue:** Vite build failed with "This package is ESM only but it was tried to load by require"
- **Fix:** Added `"type": "module"` to frontend/package.json
- **Files modified:** frontend/package.json
- **Verification:** `npm run build` succeeds
- **Committed in:** 47e1f19

**2. [Rule 3 - Blocking] Ran svelte-kit sync before build**
- **Found during:** Task J1 (SvelteKit build)
- **Issue:** tsconfig.json extends .svelte-kit/tsconfig.json which doesn't exist until sync runs
- **Fix:** `npx svelte-kit sync` generates the .svelte-kit/ directory
- **Files modified:** None (generated files in .svelte-kit/ are gitignored)
- **Verification:** Build succeeds without tsconfig warning
- **Committed in:** 47e1f19

---

**Total deviations:** 2 auto-fixed (2 blocking)
**Impact on plan:** Both fixes necessary for build to succeed. No scope creep.

## Issues Encountered
- `make all` fails at Go build step due to pre-existing undefined types in `internal/server/routes/templates.go` — this is from incomplete Plan I (Template CRUD), not related to this plan's changes. `make frontend` works correctly.
- Go binary not available in sandbox PATH — located at /usr/local/go/bin/go. Does not affect frontend build.
- Skipped `@catppuccin/palette` npm dependency — defined colors directly in CSS for zero runtime overhead.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness
- Frontend scaffold ready for Plan M (Layout Shell) and Plan N (Feature Views)
- WebSocket client ready to connect once backend WS hub is active
- API client ready for all CRUD operations once endpoints are implemented
- Auth state ready for PIN login once auth endpoint exists
- All Svelte 5 runes patterns established for future components

## Self-Check: PASSED

All 17 key files verified present. Commit 47e1f19 verified in git log.

---
*Phase: 01-tournament-engine*
*Completed: 2026-03-01*