Product Context

The Group Scheduling Application is a lightweight, link-based meeting scheduling tool running entirely on Cloudflare's developer platform. It enables an organizer to define candidate meeting slots and share a single URL with participants who respond without requiring authentication or calendar access.

Zero external dependencies — hosting, compute, database, caching, real-time WebSocket, and CDN all use Cloudflare-native primitives. No Redis, no PostgreSQL, no third-party SaaS.

Persona

Team Coordinator + Team Members

Goal

Find the best meeting time across three respondents with mixed availability

Acceptance Criteria

• Coordinator can create a poll via API
• Three respondents can submit availability with AVAILABLE and IF_NEEDED states
• Results page ranks slots by response count
• Organizer dashboard accepts PIN and allows closing the poll
• Closed poll shows correct closed state to participants

• Cloudflare Workers, D1, KV, R2, and Durable Objects are operational
• Kimi K2.5 API (api.moonshot.ai) available for LLM analysis
• Chromium browser, JavaScript enabled, 1440×900 viewport
• D1 migrated with 0001_initial.sql schema
• No concurrent test runs on same poll data

D1

Cloudflare's edge SQLite database

DO (Durable Object)

Stateful compute — WebSocket connections + PIN rate limiter

KV

Key-Value store for API rate limiting

PBKDF2

100k iteration SHA-256 key derivation for PIN/token hashing

Hono

Lightweight TypeScript web framework for CF Workers

VTR

Visual Test Report — this report format

Slot

A candidate meeting time (date + session label)

IF_NEEDED

Tentative availability, weighted 0.5x in ranking