feat: GitHub issues/PRs/CI dashboard

.github/dashboard/.gitignore

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+site/
+__pycache__/

.github/dashboard/README.md

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+# GitHub Dashboard
+
+Config-driven static dashboard for tracking issues, PRs, and CI health across multiple repos.
+
+## Security
+
+The dashboard only renders publicly available GitHub data (issue/PR titles, numbers, labels, CI pass/fail counts, usernames). An authenticated `gh` token is required for rate limits and GraphQL access, but the output HTML contains no auth-gated information. The one API field that differs between authenticated and unauthenticated responses (`author_association`) is intentionally excluded from the output.
+
+## Local Preview
+
+```bash
+cd .github/dashboard
+npm install
+npx tsx src/generate.tsx
+open site/dashboard/index.html
+```
+
+For faster iteration, set `maxRuns: 10` in the CI section of `src/config.ts` — full CI fetch takes ~90s.
+
+## Adding a Repo
+
+Add the repo to the `repos` array in `src/config.ts`. The same pages (Issues, PRs, CI) are generated for every repo.
+
+## Type Check
+
+```bash
+npx tsc --noEmit
+```