feat(transcoder): dual-format XML ↔ JSON engine, annotations, codecs, and transcoder - #39
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… and transcoder - Go: emit native json:"..." struct tags and json:"-" on XMLName (#35) - C#: emit JsonPropertyName and JsonConverter attributes (#35) - Rust: emit #[serde(rename = "...")] on choices and inherent .to_json_string() / .from_json_str() codecs (#35, #36) - Python: emit json_name in field metadata, alias/serialization_alias in Pydantic, and inherent .to_json() / .from_json() codecs (#35, #36) - Transcoder: implement zero-copy streaming XML ↔ JSON bidirectional transcoder with schema-guided and schema-less modes (#37) - CLI: add polyxml transcode command with stdin/stdout streaming and --pretty (#37) - Python: expose polyxml.xml_to_json and polyxml.json_to_xml functions (#37) Closes #34, Closes #35, Closes #36, Closes #37
nth-bailey
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# [0.14.0](v0.13.0...v0.14.0) (2026-09-20) ### Features * **transcoder:** dual-format XML ↔ JSON engine, annotations, codecs, and transcoder ([#39](#39)) ([97f9fd0](97f9fd0)), closes [#35](#35) [#35](#35) [#35](#35) [#36](#36) [#35](#35) [#36](#36) [#37](#37) [#37](#37) [#37](#37) [#34](#34) [#35](#35) [#36](#36) [#37](#37)
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Summary
Implements Epic #34: Dual-Format XML ↔ JSON Engine & Toolchain, resolving all child issues:
xml:"..."and nativejson:"..."struct tags on all fields, withjson:"-"onXMLName.[property: XmlAttribute/XmlElement, JsonPropertyName(...)]on primary constructor records and[JsonConverter(typeof(JsonStringEnumConverter))]on enums.#[serde(rename = "...")]on choice unions and fields when renaming is necessary."json_name"in dataclass metadata andalias="...", serialization_alias="..."in Pydantic v2 mode..to_json()and.from_json()codecs directly on generated models in Python and Rust..to_json_string(),.to_json_vec(),.from_json_str(), and.from_json_slice()..to_json(indent=..., by_alias=...)and@classmethod from_json(cls, data).polyxml-coreand exposed via CLI and Python bindings.polyxml::xml_to_jsonandpolyxml::json_to_xmlsupporting both schema-guided (viaModelSchema) and schema-less dynamic modes. Lossless roundtrip of attributes using@attrprefix in dynamic JSON.polyxml transcodesupporting stdin/stdout streaming pipes,--from,--to,--schema,--root, and--pretty.polyxml.xml_to_jsonandpolyxml.json_to_xmlsupportingsource(bytes, str, Path, stream),target_type/model,schema_path,root, andindent.Verification & Quality Gate
cargo test --workspace).cargo clippy --workspace --all-targets -- -D warnings.pytest --cov=polyxml --cov-branch --cov-fail-under=100).cargo fmt --check,ruff check, andruff format --check../scripts/gate.shpassing cleanly.