What this PR does

Adds automatic pnpm install execution after git pull or git merge by configuring a post-merge hook via pre-commit.

Why we need it and why it was done in this way

Developers often forget to run pnpm install after pulling changes, leading to inconsistent dependency states. This hook automatically detects changes to package.json or pnpm-lock.yaml and runs the install command.

The following tradeoffs were made:

• Following the existing post-checkout pattern (not using --frozen-lockfile)

The following alternatives were considered: None

Breaking changes

None.

Special notes for your reviewer

Run pnpm prepare after merging to activate the hook.

Checklist

• PR: The PR description is expressive enough and will help future contributors
• Code: Write code that humans can understand and keep it simple
• Refactor: You have left the code cleaner than you found it
• Upgrade: Impact of this change on upgrade flows was considered
• Documentation: Not required (dev tooling change)
• Self-review: I have reviewed my own code

Release note

NONE