✨ feat(builtin): add frontmatter() for YAML/TOML frontmatter parsing#1813
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Adds a new `frontmatter()` builtin that detects and parses both YAML and TOML frontmatter from markdown nodes using the existing yaml/toml import modules. Updates example docs to use the simpler frontmatter() call.
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Add test_frontmatter() covering YAML/TOML parsing, non-frontmatter nodes, and nested values. Fix TOML branch to use `v | .value` instead of `toml::toml_parse(v)`, which was passing the raw node string (including +++ delimiters) and failing to parse. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…gify - Add to_frontmatter() as the canonical replacement for to_front_matter() - Deprecate to_front_matter() with a comment - Sort dict keys in yaml_stringify/_yaml_stringify_value to produce deterministic output, fixing a flaky test caused by Ident BTreeMap ordering depending on string interning order at runtime - Update to_front_matter test expected value to match sorted key order - Add test_to_frontmatter() to module_tests.mq
Align YAML branch with TOML branch by using `v | .value | yaml::yaml_parse` instead of `yaml::yaml_parse(v)`.
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Adds a new
frontmatter()builtin that detects and parses both YAML and TOML frontmatter from markdown nodes using the existing yaml/toml import modules.Updates example docs to use the simpler frontmatter() call.