PR #1157 review (Copilot + CodeRabbit) flagged that several tool pages
had truncated frontmatter, e.g. manage_asset rendering as:
description: "Performs asset operations (import, create, modify, delete, etc"
Root cause: the generator used `description.split(".")[0]` to derive the
frontmatter blurb. That cuts at the FIRST period — including periods
inside abbreviations and parenthesized lists ("etc.) in Unity."), so
the rendered description stopped mid-clause.
Fix: introduce `_first_sentence()` that splits on real sentence
boundaries — `.` / `!` / `?` followed by whitespace + capital, or a
paragraph break — and falls back to the whole string if no boundary
exists. Also caps absurdly long single-sentence descriptions at ~240
chars to keep frontmatter compact.
All three call sites that used the old split:
- frontmatter `description:` in render_tool_page
- group-index bullets in render_group_index
- catalog-index bullets in render_catalog_index
Regenerated all 43 tool pages + 9 group landings + catalog index +
resources catalog. Verified `--check` passes round-trip and full
website build is clean.
manage_asset now reads: "Performs asset operations (import, create,
modify, delete, etc.) in Unity."
Shutong Wu
bc9499b203