fix(docs): complete Astro 7 upgrade [Codex]

[dependabot]

Astro 7 requires a compatible Starlight release and content-collection configuration changes. The original Dependabot update left Starlight's Astro 5 peer requirement in place, so npm ci could not resolve the dependency graph.

• Upgrade @astrojs/starlight to 0.41.10, compatible with Astro 7.
• Migrate the Starlight content config to docs/content.config.ts and use docsLoader().
• Update sidebar autogeneration to Starlight's current group syntax.
• Group Astro and Starlight updates under Dependabot's npm configuration.

[jderochervlk]

@dependabot recreate

[jderochervlk]

@codex can you get this PR to pass? We might have to combine Astro and starlight together, and perhaps go from 5->6->7.

[chatgpt-codex-connector]

Summary

• Added an npm override that makes Starlight resolve the repository’s direct Astro 7 dependency, eliminating the ERESOLVE peer-dependency conflict during npm ci. package.jsonL48-L64
• Committed the change on the current branch as 1ee0e79 (fix(deps): align Starlight with Astro 7).
• A pull request could not be created because the required make_pr tool is unavailable in this environment.

Testing

• ✅ npm ci --package-lock-only --offline
• ✅ git diff --check
• ⚠️ npm ci --offline (dependency tarball zwitch-2.0.4.tgz was not available in the local npm cache)
• ⚠️ npm run format:check (the incomplete dependency installation left the rescript executable unavailable)
• ⚠️ npm run build:docs (the incomplete dependency installation left ReScript runtime files unavailable)

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