chore: add husky git hooks and update lint-staged config

[mpicciolli]

Summary

Sets up Git hooks with husky to enforce quality checks locally before code reaches CI.

• Add pre-commit hook running lint-staged
• Add pre-push hook running npm run build && npm test
• Run biome lint --write alongside biome check --write in lint-staged
• Update the prepare script to the husky v9+ syntax (husky instead of the deprecated husky install)

Hook scripts omit the legacy shebang and husky.sh sourcing lines, which are deprecated and will fail in husky v10.

[Copilot]

Pull request overview

This PR sets up local Git hooks using Husky to run code-quality checks before changes reach CI, and updates lint-staged to run additional Biome steps.

Changes:

• Update prepare script to use Husky v9+ (husky).
• Add Husky pre-commit and pre-push hooks for lint-staged, build, and tests.
• Expand lint-staged commands to run both biome check --write and biome lint --write.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
package.json	Switch prepare to Husky v9+ invocation (husky).
.lintstagedrc.json	Update lint-staged commands to run additional Biome steps.
.husky/pre-commit	Add pre-commit hook to run lint-staged.
.husky/pre-push	Add pre-push hook to run build and tests.

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