chore(release): prepare api-to-typemcp v0.2.1

[sjungwon03]

Summary

• prepare the public api-to-typemcp v0.2.1 release
• make the SKILL frontmatter, registry fixtures, and README release link use one SemVer identity
• release the reviewed generated-project security hardening from fix(security): harden generated-project verification and dependencies #65 and public ClawHub confirmation gate from fix: fail ClawHub release job until public publication is confirmed #61

Verification

• python3 .agents/scripts/test_skill_release.py — 15 passed
• python3 .agents/scripts/test_validate_docs.py — 8 passed
• python3 .agents/scripts/test_workspace.py — 3 passed
• python3 .agents/scripts/validate_docs.py — passed
• python3 -m unittest discover -s skills/api-to-typemcp/tests -p 'test_*.py' -q — 98 passed
• generated Petstore project: npm ci --ignore-scripts, build, Vitest, and npm audit --package-lock-only (0 vulnerabilities)
• git diff --check

Closes #67

[sjungwon03-ai]

Exact-HEAD independent review of the v0.2.1 release candidate at 18886b3. Scope is clean: a single version bump 0.2.0 -> 0.2.1 across SKILL.md frontmatter, the README release link, and the release fixtures, plus the task brief. The @theorvane/type-mcp 0.2.0 runtime dependency is correctly left untouched. Security hardening #65 and the ClawHub public-confirmation gate #61 are both ancestors of this SHA, and dev is fully contained. CI on this exact SHA is green. Approve.