chore: add /release slash command

Author: coopernetes

.claude/commands/release.md

@@ -0,0 +1,52 @@
+---
+name: release
+description: Bump the project version in build.gradle and create a matching annotated git tag.
+user-invocable: true
+allowed-tools:
+  - Bash
+  - Read
+  - Grep
+  - Glob
+---
+
+# /release — Bump the project version and create a matching git tag.
+
+You are modifying this project's Gradle build scripts to increment the version as well as create a new git
+tag to push & initiate a release process (GitHub Actions workflow).
+
+Examples: `/release 1.0.0-alpha.3`, `/release 1.0.0-beta.1`, `/release 1.0.0`
+
+Arguments passed: `$ARGUMENTS`
+
+`$ARGUMENTS` is a semantic version string (without the `v` prefix) that will be set as the new version in `build.gradle`
+and used for the git tag. It should follow semver or semver-pre format, e.g. `1.0.0`, `1.0.0-alpha.3`, `1.0.0-beta.1`.
+
+---
+
+## Steps
+
+1. **Validate the argument.** The argument is the new version string (no `v` prefix). If it's blank or doesn't look like a semver/semver-pre string, stop and ask the user to provide one.
+
+2. **Show the current state.** Run `git tag --sort=-version:refname | head -5` and read `build.gradle` to show the user the current version (line containing `version = '...'` in the `allprojects` block) and the most recent tags.
+
+3. **Update `build.gradle`.** In the `allprojects { ... }` block, replace the existing `version = '...'` line with `version = '<new-version>'`. Use the Edit tool.
+
+4. **Run `./gradlew spotlessApply`** to ensure formatting is clean before committing.
+
+5. **Ask about additional changes.** Before committing, ask the user: "Any other changes to include in this commit?" Wait for their response. If they say yes, apply those changes before staging. If no, proceed.
+
+6. **Commit the version bump.** Stage `build.gradle` plus any additional files the user specified and commit:
+   ```
+   chore: bump version to <new-version>
+   ```
+   No `closes #N`, no co-author trailer needed for version bumps.
+
+7. **Create the annotated tag.**
+   ```
+   git tag -a v<new-version> -m "Release v<new-version>"
+   ```
+
+8. **Confirm.** Show the user:
+   - The new version in `build.gradle`
+   - The tag just created (`git show v<new-version> --stat`)
+   - A reminder: `git push && git push --tags` to publish (don't push automatically)