Addressed all code review feedback from PR #107: 1. ✅ Updated proposal_spec.rb line 19 to include "withdrawn" in status validation 2. ✅ Added spec for `withdrawn?` predicate following the pattern of lines 105-115 3. ✅ Added `scope :withdrawn` to `app/models/proposal.rb` 4. ✅ Added `.withdrawn` scope test All 38 proposal model tests passing. Changes pushed to feature branch.