feat: KickWatch MVP — Go backend + iOS app

[Jing-yilin]

Summary

Full MVP implementation of KickWatch — a daily Kickstarter campaign monitor.

Backend (Go/Gin)

• Kickstarter REST client for nightly crawl (no auth)
• Kickstarter GraphQL client with anonymous session bootstrap (CSRF + cookie, 12h refresh)
• APNs HTTP/2 push notification service with JWT signing
• Nightly cron (02:00 UTC): crawls 15 categories × 10 pages, upserts campaigns, matches alerts, sends pushes
• REST API: campaigns, search, categories, devices, alerts CRUD
• GORM models with AutoMigrate (Campaign, Category, Device, Alert, AlertMatch)
• Dockerfile + .env.example

iOS (SwiftUI / SwiftData)

• SwiftData models: Campaign, WatchlistAlert, RecentSearch
• APIClient (actor), KeychainHelper, NotificationService, ImageCache
• 4 tabs: Discover (sort + category chips + cursor pagination), Watchlist, Alerts, Settings
• CampaignDetailView with funding ring, stat boxes, share sheet
• SearchView with cursor pagination
• App icon: all 14 required PNG sizes generated from SVG

CI/CD

• .github/workflows/test-backend.yml — go build/test/vet on backend changes
• .github/workflows/deploy-backend.yml — ECR push + ECS deploy on main push

Commits

22 atomic commits covering backend, iOS, and CI layers independently.