Refresh v3 release handoff status

[andreanjos]

Summary

• refresh v3 readiness and macOS public release handoff docs with the post-merge state
• record the latest local preview evidence hashes and merged-main CI success
• remove stale blockers for remote workflow visibility while keeping signing secrets, tag, and signed dry-run blockers explicit

Verification

• GitHub Actions CI run 28566100125 passed on main commit 037b3a1
• git diff --check
• rg stale workflow/default-branch blocker phrases in release docs
• npm run release:macos:status -- --repo andreanjos/apm --tag v0.1.1 --markdown --untracked-files all --expected-commit 037b3a1 --allow-dirty

Thermo-nuclear review

• doc-only change; no source abstractions or branching paths changed
• touched files remain under the 1k-line per-file threshold
• release handoff now tracks live evidence instead of preserving stale workflow blockers