feat(generator): add Zod support for all content types and binary format

- Update getRequestBodySchemaName() to iterate all 3 content types
- Update schema collection to check form and multipart content
- Add format: binary → z.instanceof(File) in runtime schemas
- Add format: binary → z.ZodType<File> in type declarations
- Update existing multipart test to expect schema processing
- Add 5 new test cases for binary and multi-content-type support
- All 126 tests pass with 100% coverage

Author: owjs3901

.gitignore

@@ -34,3 +34,4 @@ report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
 .DS_Store
 
 .claude
+.sisyphus