Add wait-for-release: poll a Gitea repo's releases until a glob matches

Polls /api/v1/repos/<owner>/<repo>/releases and matches each tag_name
against a shell-style glob (e.g. v1.2.3.*). Default 600s timeout, 5s
interval, both overridable. Exits 0 with the matched tag on stdout,
1 on timeout, 2 on usage error, 3 on terminal API error (401/403/404).
Intended to run in the background of a Claude Code session while CI
produces the release.

Includes spec and 42-assertion test using a PATH-shadowed mock curl.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

README.md

@@ -25,6 +25,7 @@ This project uses **spec-driven development** (OpenSpec) as a testbed for agent-
 | `unreflected-logs` | Scan projects for unreflected session logs | Done |
 | `validate-skill` | Validate SKILL.md files against known Claude Code restrictions | Done |
 | `semver-ci` | Compute `MAJOR.MINOR.PATCH.BUILD` from commit-message tokens, maintain `VERSION.md`, and (on main) tag/push/create a Gitea release — see [`docs/semver-ci.md`](docs/semver-ci.md) and template at [`templates/gitea-workflow-version.yml`](templates/gitea-workflow-version.yml) | Done |
+| `wait-for-release` | Poll a Gitea repo's releases until a glob pattern matches or a timeout expires (default 600s) | Done |
 
 ### Engagement modes (claude-profile)