Catalog: Ruby BECs (no-binding-pry, no-puts-debugging)

[DataDave-Dev]

Part of #25 (one language per PR). No code required — a catalog BEC is a single YAML file using the generic forbid check.

Task

Add ready-to-import Ruby BECs under src/becwright/becs/:

• no-binding-pry.bec.yaml — forbid binding.pry / binding.irb left in committed Ruby code.
• no-puts-debugging.bec.yaml — forbid stray puts/pp debugging in **/*.rb (consider excluding specs).

How

1. Copy the format from src/becwright/becs/no-debug-go.bec.yaml.
2. Write a real intent and why_it_matters (a BEC carries its why — that's the point).
3. Use check: "becwright run forbid --pattern '...'" with paths **/*.rb.
4. Add the entries to src/becwright/becs/README.md.

Acceptance criteria

• pytest green — test_catalog_bundles_are_valid already validates every bundle parses.
• becwright add no-binding-pry installs it in a scratch repo.

See CONTRIBUTING.md → "Adding a catalog BEC".