STDIN

   1 feat(03-01): implement healData healing engine with type exports
   2
   3 - healData function: safeParse, issue-to-fix mapping, conservative coercion,
   4   default application, unknown field preservation, nested path handling
   5 - HealFix/HealResult types exported from healer.ts and re-exported from types.ts
   6 - Coercion: string->number, string "true"/"false"->boolean, number/boolean->string
   7 - Missing fields: ZodDefault applied as safe fix, no-default marked manual
   8 - All 14 unit tests pass, full suite (126 tests) green, tsc clean