feat: add lat.md support to the codebase

[vinitkumar]

Summary by Sourcery

Introduce lat.md-based architecture, behavior, and test documentation and link key code paths and tests to the new knowledge graph.

Enhancements:

• Annotate core conversion, CLI, backend selection, and input reader functions with @lat code references into the architecture and behavior docs.

Documentation:

• Add lat.md knowledge graph with architecture, behavior, and tests specifications, plus contributor guidance in AGENTS.md for using lat.md tooling.

Tests:

• Document critical CLI input precedence and conversion behavior tests in lat.md and link them to their corresponding test cases with @lat comments.

Chores:

• Update repository hygiene docs to describe ignored local agent/editor state and how it relates to lat.md usage.

[sourcery-ai]

Reviewer's Guide

Adds initial lat.md knowledge graph documentation (architecture, behavior, tests, and repo hygiene) and wires key code paths and tests to those docs via @lat comments, without changing runtime behavior.

Sequence diagram for Json2xml.to_xml conversion and validation behavior

sequenceDiagram
    actor Caller
    participant Json2xml as Json2xml.to_xml
    participant Dicttoxml as dicttoxml.dicttoxml
    participant XPath as convert_to_xpath31
    participant Minidom as defusedxml.minidom.parseString

    Caller->>Json2xml: to_xml(data, options)
    alt xpath_format enabled
        Json2xml->>Dicttoxml: dicttoxml(obj, xpath_format=True, options)
        Dicttoxml->>XPath: convert_to_xpath31(obj)
        XPath-->>Dicttoxml: xpath_xml_bytes
        Dicttoxml-->>Json2xml: xml_bytes
    else standard format
        Json2xml->>Dicttoxml: dicttoxml(obj, xpath_format=False, options)
        Dicttoxml-->>Json2xml: xml_bytes
    end

    alt pretty output enabled
        Json2xml->>Minidom: parseString(xml_bytes)
        alt xml is well formed
            Minidom-->>Json2xml: dom_document
            Json2xml-->>Caller: pretty_xml_string
        else xml is invalid
            Minidom-->>Json2xml: parse error
            Json2xml-->>Caller: raise InvalidDataError
        end
    else raw output
        Json2xml-->>Caller: xml_bytes
    end

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File-Level Changes

Change	Details	Files
Introduce lat.md knowledge graph documents describing architecture, behavior, and key tests, plus usage guidelines for agents.	Add AGENTS.md with required workflow for maintaining lat.md docs and running lat CLI commands Create lat.md/lat.md as the entrypoint that explains the knowledge graph layout, semantic search requirements, and ignored local tooling directories Add lat.md/architecture.md documenting the core pipeline, conversion engine, backend selection, and CLI entrypoint, with links into existing Python modules Add lat.md/behavior.md defining observable input, conversion-output, XPath format, and invalid-payload behavior, tied to concrete functions Add lat.md/tests.md specifying a small, high-signal set of CLI and conversion behavior tests and enabling require-code-mention validation	AGENTS.md lat.md/lat.md lat.md/architecture.md lat.md/behavior.md lat.md/tests.md
Annotate core library, CLI, serializer, utils, and tests with @lat comments that tie code to the new knowledge graph sections.	Tag Json2xml class and its to_xml method with architecture and behavior sections describing the core pipeline and XML-output/validation behavior Tag CLI create_parser and read_input with architecture and behavior sections for the CLI entrypoint and input readers Tag dicttoxml and convert_to_xpath31 with architecture and behavior sections for the conversion engine and XPath 3.1 format Tag dicttoxml_fast.dicttoxml with a backend-selection architecture section Tag readfromjson with an input-readers behavior section Tag selected tests in test_cli.py, test_dict2xml.py, and test_json2xml.py with tests sections for CLI input precedence, stdin dash handling, item-wrap behavior, and XPath namespace emission	json2xml/json2xml.py json2xml/cli.py json2xml/dicttoxml.py json2xml/dicttoxml_fast.py json2xml/utils.py tests/test_cli.py tests/test_dict2xml.py tests/test_json2xml.py
Repository hygiene and tooling alignment for lat.md usage.	Update .gitignore to ensure local agent/editor directories such as .codex, .pi, and .cursor are ignored in line with AGENTS.md guidance	.gitignore

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.92%. Comparing base (b7a8095) to head (8e0b79f).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #279      +/-   ##
==========================================
+ Coverage   95.89%   95.92%   +0.02%     
==========================================
  Files           5        5              
  Lines         463      466       +3     
==========================================
+ Hits          444      447       +3     
  Misses         19       19              

Flag	Coverage Δ
unittests	95.92% <100.00%> (+0.02%)	⬆️

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[sourcery-ai]

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