[codex] fix Codename One project logo

[Sean-Kenneth-Doherty]

Summary

• replace the broken Codename One project logo URL with the GitHub owner avatar
• keep the project link and description unchanged

Validation

• old Codename One logo URL returns 404 text/html
• new GitHub avatar URL returns 200 image/png
• codenameone/CodenameOne is public, unarchived, and uses master as its default branch
• GITHUB_TOKEN=$(gh auth token) pnpm build
• generated dist/index.html contains the Codename One card with the new logo URL and no old footer-logo URL
• git diff --check origin/main...HEAD

Refs #347 and #470.

[Sean-Kenneth-Doherty]

Fresh validation against the current PR head (649a0c6):

• the PR is scoped to the Codename One entry in src/data/projects.js, plus restoring the final newline
• codenameone/CodenameOne is public, unarchived, and currently uses master as its default branch
• the old Codename One logo URL returns 404 text/html
• the replacement GitHub avatar URL returns 200 image/png
• GITHUB_TOKEN=$(gh auth token) pnpm build -> Astro build succeeded, 2 pages
• generated dist/index.html contains the Codename One card with the new logo URL and no old footer-logo URL
• git diff --check origin/main...HEAD -> clean

I validated this in an isolated temporary git worktree so generated .astro/dist output did not touch the main checkout.