fix(ci): skip no-commit-to-branch in the full-suite CI run

[nstarman]

Urgent: fixes broken CI on main

no-commit-to-branch (added in ##45) is currently failing every push to main — CI checks out a real local branch literally named main for push events, so the hook (which exists to stop a human committing directly to a protected branch) fires every single time, unconditionally. This is a hotfix, not a revert: the hook stays fully active for local git commit/git push (via prek install), which is its actual purpose — it's only skipped in the "run every hook over all files" CI invocation, where it can never do anything but fail.

Test plan

• SKIP=no-commit-to-branch prek run --all-files (and prek run --skip no-commit-to-branch --all-files) verified locally to skip only this hook and run everything else normally
• prek run no-commit-to-branch --all-files (without SKIP) still fails on main / versions/* and passes on a feature branch — confirming the hook itself is untouched

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (8e265d1) to head (bb88425).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #47   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines            6         6           
=========================================
  Hits             6         6           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.