docs(skills): regenerate skills catalog; fix generator sentence truncation
- Fix generate-skill-docs.py short-description truncation: split on
sentence boundary (dot + space/end) instead of the first dot, which
mangled descriptions containing dotted paths ('.hermes/plans/') or
abbreviations.
- Regenerate all 181 skill pages + both catalog indexes + sidebar:
adds missing pages for inspecting-hermes-desktop-dom, tldraw-offline
(fixes broken catalog link), and pinecone-research.
- Delete orphaned kanban-codex-lane page (skill removed in #39028).
355b376225