88ac9f5ba1
* fix: surface real exception class+message in SSE error events * fix: tighten SSE error patch scope and key redaction * fix: redact base64-style secret suffixes fully * style: remove notes/ reference from the dosctring * fix: rebuild env cache on each error call * fix: route BaseException through serde.default on SSE/webhook paths * fix: distinguish routed providers by request URL host * feat: normalize provider-SDK exceptions via ErrorNormalizationMiddleware * refactor: drop json_dumpb dataclass-bypass wrappers, superseded by middleware * fix: guard _extract_host against SDK properties that raise * refactor: derive provider tag from ModelRequest.model, not the exception * refactor: drop serde.default patch and exception-based inference; ProviderStreamError.model_dump handles the emit * refactor: move envelope helpers from patches.py to errors.py * feat: extend ErrorNormalizationMiddleware coverage to every model-call path * chore: clean up review findings from middleware pivot * fix: pass through all langgraph.errors * fix: move langgraph.errors pass-through into _normalize * fix: pass through ContextOverflowError in _normalize