fix: Allow bracket characters in repo path validation

[sentry]

This PR updates the REPO_PATH_SEGMENT_PATTERN regex in src/utils/repo-path.ts to include [, ], (, and ) characters.

TanStack Router uses these characters for file-based routing conventions, such as escaping literal dots ([.]) and defining route groups ((group)). Previously, the path validation would reject legitimate example file paths containing these characters, leading to an "Error: [" issue when trying to load such examples.

This change ensures that valid router-convention paths are correctly processed. It does not introduce any security vulnerabilities as existing checks for path traversal (e.g., .., //, leading/trailing /) remain in place.

Fixes TANSTACK-COM-4ZF

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Status	Name	Latest Commit	Updated (UTC)
✅ Deployment successful! View logs	tanstack-com	96259f1	Oct 14 2026, 09:44 AM

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Latest commit: 96259f1

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[tannerlinsley]

Merged current main into this branch and resolved the validator conflict, preserving bracket support and adding route-group parentheses. Added a regression using the real Router example path examples/vue/basic-file-based-jsx/src/routes/(group)/inside.tsx.

pnpm test passed, including type checks, lint, unit, chat, and desktop tests. The commit hook also passed. The change is now two files against main, with no dependency changes. Waiting for fresh checks on the updated head before merging.