[codex] add Storybook to project suggestions

[Sean-Kenneth-Doherty]

Summary

• adds Storybook to the project suggestions list
• enables beginner-friendly issue previews for the Storybook card

Addresses #1.

Validation

• verified storybookjs/storybook is public and not archived
• verified current open beginner-friendly issues: #12497, #8596, #23862 all have good first issue and help wanted labels
• git diff --check
• GITHUB_TOKEN=$(gh auth token) pnpm build
• inspected dist/index.html: Storybook card renders, 153 project cards total, and Storybook issue previews render

[Sean-Kenneth-Doherty]

Fresh validation against the current PR head (c618a92):

• storybookjs/storybook is public, unarchived, and currently uses next as its default branch
• the configured Storybook avatar URL returns 200 image/png
• GITHUB_TOKEN=$(gh auth token) pnpm build -> Astro build succeeded, 2 pages
• imported projectList and confirmed the Storybook card uses https://github.com/storybookjs/storybook with loadIssues: true
• confirmed generated dist/index.html contains the Storybook card and Storybook issue preview links
• git diff --check origin/main...HEAD -> clean

Generated .astro/dist output was restored after validation.

[Sean-Kenneth-Doherty]

Closing this to reduce maintainer review noise from my project-suggestion-only PR batch. I am pruning these so the queue can focus on concrete bug, security, accessibility, and performance fixes.