[codex] add Storybook and Grafana to project list

[Sean-Kenneth-Doherty]

Summary

• Adds Storybook to the project list with a GitHub avatar, contribution link, tags, and live beginner issue loading.
• Adds Grafana to the project list with a GitHub avatar, contribution link, tags, and live beginner issue loading.
• Contributes to Add projects to project list #1.

Why

Both projects are active, unarchived repositories with open good first issue items, making them useful additions for first-time contributors browsing the project list.

Validation

• pnpm build
• git diff --check
• Verified neither project is already present in src/data/projects.js and no open PR mentions Storybook or Grafana.
• Verified both /contribute pages return HTTP 200 and both avatar URLs return image content.
• Verified the built index contains both cards and renders three issue links for each project.

[Sean-Kenneth-Doherty]

I rechecked this in an isolated clone before taking it out of draft:

• pnpm install --frozen-lockfile
• pnpm build
• Storybook and Grafana cards are present in dist/index.html
• Both projects still have current good first issue results and their /contribute pages/avatar URLs respond successfully

Keeping this draft for now because the built issue cards still include the literal issue-label conditional from the separate IssueList.astro class binding bug. That fix is now in #610; this PR should either wait for #610 to land or be rebased after it.

[Sean-Kenneth-Doherty]

Withdrawing to reduce review noise from the large batch of small project-list PRs. This also depended on the issue-label rendering fix landing first, so it is better not to leave it open as a separate review item.