dev: mark unstable releases as pre-release and add debug info

- Add prerelease: true to goreleaser-unstable config
- Print github.ref, github.ref_name, and github.event_name for debugging

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: philipbalinov

.github/.goreleaser-unstable.yml

@@ -279,3 +279,4 @@ docker_manifests:  # https://goreleaser.com/customization/docker_manifest/
 release:
   replace_existing_artifacts: true
   make_latest: false
+  prerelease: true

.github/workflows/goreleaser.yml

@@ -71,7 +71,7 @@ jobs:
         id: skip-publish
         if: contains(github.ref, 'alpha') || contains(github.ref, 'beta') || contains(github.ref, 'pre') || contains(github.ref, 'rc') || inputs.skip-publish == true
         run: |
-          echo "Skipping publish for alpha and beta tags"
+          echo "Skipping publish for non-release tags"
           echo "skip-publish=true" >> $GITHUB_OUTPUT
           echo "skip-publish=true" >> $GITHUB_ENV
 
@@ -149,7 +149,7 @@ jobs:
       # This is because a goreleaser dep was changed to https://github.com/goreleaser/nfpm/releases/tag/v2.41.2
       # created a discussion on the issue here https://github.com/orgs/goreleaser/discussions/5943
 
-      - name: Run GoReleaser (w/ Docker Release)
+      - name: Run GoReleaser and promote latest
         if: ${{ inputs.skip-publish != true && steps.skip-publish.outputs.skip-publish != 'true' }}
         uses: goreleaser/goreleaser-action@e435ccd777264be153ace6237001ef4d979d3a7a # v6.4.0
         with:
@@ -175,7 +175,7 @@ jobs:
           TSIGN_ACCESS_TOKEN: ${{ steps.get_token.outputs.TSIGN_ACCESS_TOKEN }}
           MAKE_LATEST: ${{ inputs.make-latest == false && 'false' || 'true' }}
 
-      - name: Run GoReleaser (w/o Docker Release)
+      - name: Run GoReleaser without promoting 'latest'
         if: ${{ inputs.skip-publish == true || steps.skip-publish.outputs.skip-publish == 'true' }}
         uses: goreleaser/goreleaser-action@e435ccd777264be153ace6237001ef4d979d3a7a # v6.4.0
         with: