chore: add CI, contributor templates, and launch polish

[AhmedFr]

What & why

Adds the CI/CD and contributor fundamentals we were missing before launch, plus
two bits of launch polish.

• CI — .github/workflows/ci.yml runs typecheck → lint → test → build on
  push to main and every PR (pnpm 11 / Node 20, --frozen-lockfile,
  cancel-in-progress concurrency). README gets a matching CI status badge.
• Contributor templates — PR template + bug/feature issue forms + config that
  nudges contributors to the forms.
• Self-enforcement — project CLAUDE.md binds PR/issue authoring to those
  templates and to passing all four gates before opening a PR.
• NEXT_PUBLIC_SITE_URL documented in .env.example so Open Graph / Twitter
  card images resolve on a real deploy instead of localhost.
• 50-star reward set to a free hosted version (landing page + README), replacing
  the [your reward here] placeholder.

How it was tested

• pnpm test — 71 passed
• pnpm typecheck
• pnpm lint
• pnpm build

YAML for the workflow and issue forms was also validated with a parser.

Checklist

• Follows the single-responsibility / per-component folder structure
• No secrets, API keys, or .env values committed
• README / docs updated if behavior or configuration changed
• Screenshots included for UI changes — n/a (only a one-line copy change to the landing milestone text)

Screenshots / notes

Follow-ups for the maintainer:

• Enable Discussions in repo settings, or the contact link in
  .github/ISSUE_TEMPLATE/config.yml should point at issues instead.
• CD is intentionally deferred until a hosting target exists (that's the reward).

Summary by CodeRabbit

• New Features

  • Added configuration for improved Open Graph and social media card previews when content is shared.

• Documentation

  • Updated star milestone messaging: reaching 50 stars unlocks a free hosted version.

• Chores

  • Implemented automated CI/CD pipeline.
  • Added structured issue and pull request templates.
  • Added project contribution guidelines.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: f1fefd6a-7362-4d67-89a8-e539d449917d

📥 Commits

Reviewing files that changed from the base of the PR and between dbd9050 and d4d9567.

📒 Files selected for processing (9)

• .env.example
• .github/ISSUE_TEMPLATE/bug_report.yml
• .github/ISSUE_TEMPLATE/config.yml
• .github/ISSUE_TEMPLATE/feature_request.yml
• .github/pull_request_template.md
• .github/workflows/ci.yml
• CLAUDE.md
• README.md
• app/page.tsx

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📝 Walkthrough

Walkthrough

Adds GitHub contributor infrastructure: a CI Actions workflow (typecheck, lint, test, build with pnpm), structured bug and feature request issue form templates, a populated PR template, a CLAUDE.md contributor guide, and a CI badge in the README. Also replaces the star-milestone reward placeholder with a concrete free-hosted-version promise in both README and the landing page, and adds NEXT_PUBLIC_SITE_URL to .env.example.

Changes

GitHub Contributor Infrastructure

Layer / File(s)	Summary
CI workflow .github/workflows/ci.yml	Defines a CI workflow triggered on push to main and all PRs, with concurrency cancellation; the verify job installs dependencies via frozen lockfile then runs typecheck, lint, test, and build in sequence.
Issue templates, PR template, and contributor guidance .github/ISSUE_TEMPLATE/bug_report.yml, .github/ISSUE_TEMPLATE/config.yml, .github/ISSUE_TEMPLATE/feature_request.yml, .github/pull_request_template.md, CLAUDE.md	Adds structured bug and feature request issue forms with required fields and dropdowns; disables blank issues and routes questions to Discussions; populates the PR template with description, test, and checklist sections; adds CLAUDE.md mandating template use and the four pre-PR pnpm commands.

Star Milestone Messaging and Env Config

Layer / File(s)	Summary
Star milestone text and env var README.md, app/page.tsx, .env.example	Replaces [your reward here] placeholder with a specific free hosted browser version promise in both README and landing page CTA; adds CI status badge to README; adds NEXT_PUBLIC_SITE_URL (blank for local) for absolute OG/Twitter card URLs.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Poem

🐇 Hop hop, the templates are set,
No blank issues to fret!
CI runs with a zip,
Lint and build, what a trip.
Fifty stars brings a treat — 🌟
A free hosted seat!
The warren is tidy and neat. ✨

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/ci-and-contributor-templates

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