build: handle cases where there is no tag

.github/workflows/build.yml

@@ -22,19 +22,31 @@ jobs:
       if: ${{ github.event_name == 'push' }}
       shell: bash
       run: |
-        git fetch --tags --unshallow || true
+        git fetch --tags || true
-        LAST_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "v0.2.0")
         
+        # Determine last tag and log range
+        if git describe --tags --abbrev=0 >/dev/null 2>&1; then
+            LAST_TAG=$(git describe --tags --abbrev=0)
+            RANGE="${LAST_TAG}..HEAD"
+        else
+            LAST_TAG="v0.1.9"
+            RANGE="HEAD"
+        fi
+        
+        # Calculate next version
         IFS='.' read -r major minor patch <<< "${LAST_TAG#v}"
         NEW_VERSION="$major.$minor.$((patch + 1))"
         NEW_TAG="v$NEW_VERSION"
         
-        CHANGELOG=$(git log ${LAST_TAG}..HEAD --oneline | sed 's/^/* /')
+        # Log commits
+        CHANGELOG=$(git log $RANGE --oneline | sed 's/^/* /')
         [ -z "$CHANGELOG" ] && CHANGELOG="Maintenance build."
         
+        # Tag and push back to Gitea
         git tag $NEW_TAG
         git push origin $NEW_TAG
         
+        # Set outputs for next steps
         echo "version-string=$NEW_VERSION" >> $GITHUB_OUTPUT
         echo "changelog<<EOF" >> $GITHUB_OUTPUT
         echo "## What's Changed" >> $GITHUB_OUTPUT
@@ -99,7 +111,6 @@ jobs:
 
     - name: Package Build
       run: |
-        # Use -not -path "*/CMakeFiles/*" to exclude the temporary "a.exe" files
         EXE=$(find build -name "*.exe" -not -path "*/CMakeFiles/*" | head -1)
         echo "Found EXE: $EXE"
         mkdir -p release