RC: Claude-compatible skill distribution rollout

[snissn]

Summary

This is the cumulative release-candidate review surface for issue #13.

It includes the full Claude-compatible skill distribution rollout after PR #14:

• compiler + pilot generation
• website support
• MCP support
• docs/onboarding updates
• evaluation guidance
• broad rollout to all active 0.4.0 packs
• Claude Code local preflight + runtime validation helpers

Review framing

Please review this PR as the RC branch against main.

The intermediate stacked PRs (#15-#19) remain useful implementation slices, but this PR is the primary cumulative review surface.

What changed

• generated Claude-compatible skill bundles under distributions/claude/
• distribution-aware website UX and skill inspection pages
• distribution-aware MCP tools
• updated README / CONTRIBUTING / tutorials / onboarding
• evaluation guidance and pilot review artifacts
• rollout to all active packs
• Claude Code local setup and runtime validation helpers

Validation

• npm run check:claude-skill:all
• find distributions/claude -mindepth 2 -maxdepth 2 -type d | sort | xargs node scripts/validate-claude-skill-pack.js
• npm run check:mcp-distributions
• npm run check:claude-code-local-setup
• npm run check:claude-code-skill-runtime
• npm run build

RC status

Issue #13 is now reviewable as an RC.

Authenticated logged-in Claude Code runtime validation has been split to follow-up issue #21 and is not an RC review blocker for this PR. It remains a GA follow-up.

Refs: #13
Follow-up: #21

[snissn]

Pre-merge UX/onboarding polish is now tracked in #22.

Scope moved there:

• homepage AI onboarding prompt refinement
• Agent Packs CTA/distribution hierarchy cleanup
• tutorial/blog/proof surfacing on /agents

Deferred separately:

• logged-in Claude Code validation remains in GA follow-up: validate Claude-compatible skills in logged-in Claude Code #21

This keeps #20 as the cumulative RC review surface while making the remaining polish scope explicit before merge.