incremental-migrationlisted

# Incremental Migration Never attempt to migrate an entire codebase in a single step. Mega-commits are impossible to review and dangerous to merge. ## The Incremental Strategy 1. **Define the Target Pattern**: Clearly establish the "Old Way" and the "New Way". 2. **Implement Side-by-Side**: Create the "New Way" implementation alongside the old one. Do not delete the old one yet. 3. **Migrate One Vertical Slice**: Pick exactly one feature, route, or component. Update it to use the new pattern. 4. **Test and Commit**: Verify the slice works. Commit this step. 5. **Repeat**: Move to the next slice. 6. **Deprecate and Remove**: Only once all usages of the "Old Way" are gone can you safely delete the old implementation. If a migration is too large for a single session, leave a clear `handoff.md` summarizing progress and the next files to migrate.