v0.2.0 — web3d-dev

• Every skill's front-matter description is now a router, not a manual: one
  "Use when" sentence, a "NOT for" boundary naming the sibling skill, the opt-out
  phrase (no web3d, без web3d) and a few English and Russian triggers. Lengths before
  and after: web3d-animation 873 to 435, web3d-assets 856 to 450, web3d-runtime 841
  to 455 (2,570 to 1,340 chars in total).
• Why: Claude Code shares about 30,000 chars of skill listing across every installed
  skill. Measured on 2026-10-20, the operator's listing held 29,995 chars for 134 skills
  and 81 of them showed no description. Plugin skills cannot be hidden, so description
  length is the only lever.
• Every trigger phrase removed from a description moved verbatim (EN/RU pairs kept
  together) into a new ## Triggers section at the end of that skill's body, so the
  family's routing hook still finds each of its words in the skill's text.
• test/validate.py: the house description cap drops from 970 to the family cap of
  500 chars; the standard's 1024 stays the hard limit. CLAUDE.md states the new rule.