Refresh maintainer-owned artifacts after the PR merge batch, convert the\nJetski loader example to a directly importable Node ESM module, and add\nthe 8.7.0 changelog entry before release preparation.\n\nRefs #382\nRefs #388
Align public docs and maintainer guidance with the current 1,304-skill catalog state and v8.4.0 release copy.
Refresh README credits for newly imported external sources, update user-facing count references, and document the post-release docs realignment in the changelog and walkthrough.
