chore(tasks): flip P9.1 to in-progress

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ccd

TASKS.md

@@ -474,7 +474,7 @@ once that phase lands.
 > AI self-installs its side of the bridge. This is the
 > developer-facing payoff of the whole v0.1 body of work.
 
-- [ ] **P9.1 — Cut a draft GitHub release with the tarball.**
+- [/] **P9.1 — Cut a draft GitHub release with the tarball.**
   Acceptance: tag `v0.1.0` pushed to GitHub; `release.yml` runs
   green on the matrix; the resulting draft release at
   `github.com/firstintent/a2a-bridge/releases/tag/v0.1.0` carries