renamer/tests/fixtures/regex/README.md

Regex Command Fixtures

These fixtures support contract and integration testing for the renamer regex command. Each subdirectory contains representative filenames used across preview, apply, conflict, and validation scenarios.

• baseline/ — ASCII word + digit combinations (e.g., alpha-123.log) used to validate basic capture group substitution.
• unicode/ — Multilingual filenames to verify RE2 Unicode handling and ledger persistence.
• mixed/ — Build-style artifacts with underscores/dashes for automation-style rename flows.
• case-fold/ — Differing only by case to simulate case-insensitive duplicate conflicts.

Tests should copy these directories to temporary working paths before mutation to keep fixtures idempotent.