Optimize OpenAPI parser performance with single-pass schema processing (#1214)

Introduce experimental OpenAPI parser with improved performance and maintainability (#1209)

fix: save reference when using allOf / oneOf / anyOf (#1208)

Fix max recursion error when pruning OpenAPI definitions (#1092)

openapi: Improve pruning of unused defs

Remove extra copy

prune titles from jsonschemas

Ensure openapi defs are loaded

Replace custom parsing with TypeAdapter