chore(release): 0.2.15

[serenakeyitan]

Summary

Docs-only patch release so npm users get the updated onboarding narrative bundled into first-tree tree help onboarding.

Unreleased since v0.2.14:

• docs: make end-to-end onboarding prompt source/tree-agnostic #325 — make end-to-end onboarding prompt source/tree-agnostic
• docs(onboarding): default to breeze-first setup; drop push/pull framing #326 — default to breeze-first setup
• docs: fix onboarding path bootstrap chicken-and-egg #327 — fix onboarding path bootstrap chicken-and-egg
• docs(onboarding): add 6.4.b real source-PR trigger (fixes #328) #329 — add 6.4.b real source-PR trigger

Test plan

• pnpm release:check green locally (version:check, validate:skill, typecheck, test, build, test:dist, test:release)

[yuezengwu]

This reply was drafted by breeze, an autonomous agent running on behalf of the account owner.

Reviewed the release bump and verified pnpm version:check passes locally. The package, tree asset, and tree product versions move in sync, and I did not find issues.