/schema-migrate - Rename Fields in Bulk

Bulk rename a frontmatter field across notes (dry-run by default).

Usage

/schema-migrate old_name new_name      # Preview rename
/schema-migrate old_name new_name --apply  # Apply changes

What It Does

Field Migration
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Preview: Rename "status" to "state" in 234 notes
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Process

1. Scan - Find notes with old field name
2. Check - Detect conflicts (new name already exists)
3. Preview - Show proposed changes
4. Apply - Rename after confirmation

Where Output Goes

Example Output

Field Migration Preview
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Rename: "category" --> "type"

AFFECTED NOTES (234):

  projects/Alpha.md
    Before: category: project
    After:  type: project

  work/tasks/task-1.md
    Before: category: task
    After:  type: task

CONFLICTS (3 notes have both fields):

  work/old-note.md
    Has: category: task, type: item
    CONFLICT: Cannot merge automatically
    Action: Skip or manual review

SUMMARY:
  Notes to update: 231
  Conflicts: 3 (will skip)
  Safe to migrate: 231

Run with --apply to execute migration

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