`CommandRegistrar.render_frontmatter` calls `yaml.dump()` without `width=`,
so PyYAML applies its default ~80-column wrap and folds any long scalar onto
a continuation line.
A `description` longer than roughly 80 characters is therefore rendered as:
---
name: speckit-implement
description: Execute the implementation plan by processing and executing all tasks
defined in tasks.md
---
The YAML remains valid and round-trips faithfully through `yaml.safe_load`,
so this is not data loss. It is a shape inconsistency with real consequences:
- Hand-written core command templates always keep `description` on one line,
so preset- and extension-rendered commands do not match the files they sit
beside in the same directory.
- Consumers that read frontmatter line-wise rather than with a YAML parser
see the description truncated at the fold, followed by a stray line. Spec
Kit itself hand-builds SKILL.md frontmatter in the skills path (see #3391),
so this is not a hypothetical class of consumer.
- `speckit.implement`'s own description is 89 characters, so a preset that
overrides it hits this immediately.
`width=float("inf")` disables the line-wrapping only; escaping, quoting and
the handling of genuinely multi-line values are unchanged, since PyYAML
selects the scalar style before applying width.
Adds a regression test that fails without the change.
Verified against the repo's own suite: 6354 passed. Four failures in
tests/integrations/test_integration_subcommand.py are present on a clean
checkout too (ANSI escapes in captured output) and are unrelated.
deborre
4d5458c883