fix(infra): guard lint-staged in pre-commit hook (#1077)

[emarkees]

PR Title

[Infra] Guard lint-staged in .husky/pre-commit with fallback message (#1077)

Closes #1077

PR Description

📝 Summary

Updates .husky/pre-commit to include a local binary guard check for lint-staged. If lint-staged is not installed or executable in node_modules, it prints a user-friendly error message pointing to npm install and exits cleanly with status 1.

❓ Why this matters

Fixes issue #1077. Previously, .husky/pre-commit ran npx lint-staged directly without local installation checks. When a contributor's environment was offline or missing node_modules, npx failed with a cryptic error instead of instructing the developer to run npm install.

🛠 Changes

• Updated .husky/pre-commit with a sh shebang, guard comment, and executable check [ ! -x ./node_modules/.bin/lint-staged ].
• Prints clear error message to stderr on failure.
• Bypasses npx lookup latency by invoking local ./node_modules/.bin/lint-staged directly.

🧪 Verification

• Verified hook failure output when lint-staged is missing (lint-staged is not installed locally. Run 'npm install' before committing.).
• Verified execution of lint-staged when local dependencies are installed.