- Hash inputs in timingSafeEqual to prevent length leak side-channel
- Add quote escaping to escapeHtml for defense in depth
- Normalize chatId to Number in parseKvKey for type consistency
- Log Retry-After header on 429 rate limit responses
- Slim README to focused overview, move details to docs/
- Add docs/: system-architecture, setup-guide, feature-decisions
- Add documentation section and README guidelines to CLAUDE.md
- Remove cron status polling (statuspage notifies via email on webhook failure)
- Store subscriber types/components as KV metadata for O(1) filtering
- Extract timingSafeEqual to shared crypto-utils.js (was duplicated)
- Change /migrate route from GET to POST (prevent CSRF/prefetch)
- Preserve existing subscriber preferences on /start re-subscribe
- Remove dead getAllSubscribers export
- Update docs to reflect changes
Statuspage deactivated our webhook because requests to
//webhook/status/<secret> returned 404 — Hono requires exact path
matches. Added middleware that rewrites consecutive slashes before
routing, preserving POST body via internal re-dispatch.
- /help: detailed guide with examples for all commands
- /status: overall indicator, emoji markers, updated time, status page link
- /history [count]: recent incidents with impact, dates, links (max 10)
- /uptime: component health with last change time
- Split info commands into bot-info-commands.js for modularity
- Register all 7 commands in bot-setup.js