pre-commit hook has tests commented out — add a flag to enable them and document it in scripts/README.md

[Austinaminu2]

Summary

The scripts/pre-commit hook has the test step commented out:

# Run tests (optional - can be slow for large projects)
# Uncomment the following lines if you want to run tests before each commit:
# echo "Running tests..."
# if ! cargo test --workspace; then

Contributors who want pre-commit test validation must manually edit the script. There is no documented way to enable this. The scripts/README.md also does not mention the test step exists or how to enable it.

Tasks

• Add a FORGE_PRECOMMIT_TESTS environment variable flag: if set to 1, tests run; otherwise skipped
• Update the pre-commit script to check ${FORGE_PRECOMMIT_TESTS:-0}
• Update scripts/README.md to document the flag and how to enable it
• Update CONTRIBUTING.md to reference the flag
• Add a tip suggesting FORGE_PRECOMMIT_TESTS=1 git commit for contributors adding new tests

Labels: dx, good first issue