mod: move config

opencode.cfg/skills/git-release/SKILL.md

@@ -0,0 +1,20 @@
+---
+name: git-release
+description: Create consistent releases and changelogs
+license: MIT
+compatibility: opencode
+metadata:
+  audience: maintainers
+  workflow: github
+---
+
+## What I do
+
+- Draft release notes from merged PRs
+- Propose a version bump
+- Provide a copy-pasteable `gh release create` command
+
+## When to use me
+
+Use this when you are preparing a tagged release.
+Ask clarifying questions if the target versioning scheme is unclear.