🐛 fix(ci): main builds compute fresh CalVer and tag locally before Gradle

PR #4 broke the release workflow: Gradle's tag-driven version derivation
expects an exact-match tag at HEAD, but on main there isn't one until
the release job creates it. Result: git describe returned the post-tag
dev format (e.g. v2026.05.08.30-1-g1be0321) and the release action used
that string verbatim as the new tag and Release name.

Fix: split the Compute version step. On refs/heads/main, compute a fresh
CalVer from date + GITHUB_RUN_NUMBER and `git tag` HEAD locally so
Gradle's git-describe finds an exact match. The release job then pushes
this tag when creating the GitHub Release. PR / feature-branch builds
keep using `git describe` for artifact-naming purposes.

The bad tag/release v2026.05.08.30-1-g1be0321 has been deleted.

Author: vitofico

.github/workflows/android-ci.yaml

@@ -55,14 +55,23 @@ jobs:
       - id: version
         name: Compute version
         run: |
-          # Match what app/build.gradle.kts derives from the same checkout.
-          # Tags are pulled by checkout's fetch-tags: true; verify here.
-          if ! git describe --tags --match 'v*' --abbrev=0 >/dev/null 2>&1; then
-            echo "::error::No matching v* tag in history. Build will fail."
-            git tag -l 'v*' | head
-            exit 1
+          if [ "$GITHUB_REF" = "refs/heads/main" ]; then
+            # On main: bump CalVer (date + CI run number) and tag the HEAD
+            # locally so Gradle's git-describe finds an exact-match tag.
+            # The release job pushes this tag when it creates the Release.
+            BUILD_DATE=$(date -u +%Y-%m-%d)
+            VERSION="${BUILD_DATE//-/.}.${GITHUB_RUN_NUMBER}"
+            git tag "v$VERSION"
+          else
+            # On PRs / feature branches: derive from existing tag history.
+            # Post-tag dev format is fine for non-release artifact names.
+            if ! git describe --tags --match 'v*' --abbrev=0 >/dev/null 2>&1; then
+              echo "::error::No matching v* tag in history. Build will fail."
+              git tag -l 'v*' | head
+              exit 1
+            fi
+            VERSION=$(git describe --tags --match 'v*' --always | sed 's/^v//')
           fi
-          VERSION=$(git describe --tags --match 'v*' --always | sed 's/^v//')
           echo "VERSION_NAME=$VERSION" >> "$GITHUB_ENV"
           echo "version=$VERSION" >> "$GITHUB_OUTPUT"
           echo "Building version $VERSION"