[Infra] .husky/pre-commit only runs lint-staged with no fallback message when npx is unavailable

[grantfox-oss]

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Why this matters

.husky/pre-commit is a single line, npx lint-staged, with no error handling. If a contributor's environment lacks network access for npx to resolve lint-staged (e.g. offline, or a corrupted node_modules), the hook fails with a cryptic npx error instead of a clear message telling the contributor to run npm install.

Acceptance criteria

• Add a guard that checks lint-staged is installed locally before invoking it
• On failure, print a clear message pointing to npm install
• Keep the hook fast for the common case (no added latency when lint-staged is present)

Files to touch

• .husky/pre-commit

Out of scope

• Adding new pre-commit checks beyond lint-staged
• Changing what lint-staged lints

[CleanDev-Fix]

Hi, I would like to work on this.

I inspected .husky/pre-commit. My approach would be:

1. Check that the repository-local node_modules/.bin/lint-staged executable
   is available before running it.
2. Exit with a clear message directing contributors to npm install when it
   is missing, while invoking the local executable directly in the normal path.
3. Verify POSIX syntax plus missing, present, and failing-local-binary behavior
   in isolated fixtures with npx unavailable.

I would keep additional pre-commit checks and changes to lint-staged's scope out
of this patch. Does this plan fit what you had in mind?