fix(workflows): prioritize HEAD tag detection over global latest tag

When prepare-release tags HEAD with a new release version, do-release should
immediately detect that tag rather than finding the latest tag chronologically.

Changes:
- Modified detect-tag step to check if HEAD is exactly at a tag first
- Falls back to latest tag only if HEAD is not tagged
- Fixes issue where v1.0.2 was detected instead of v1.1.0 at HEAD

This ensures correct version detection in prepare-release → do-release workflow chain.

.gitea/workflows/do-release.yml

@@ -41,13 +41,17 @@ jobs:
         run: |
           set -euo pipefail
 
-          # Fetch all tags from origin to ensure we have the latest
+          # Fetch all tags from origin first
           git fetch origin --tags --force --quiet 2>/dev/null || true
           
-          # Try to find the most recent tag (in case it was just created by prepare-release)
-          latest_tag="$(git describe --tags --abbrev=0 2>/dev/null || echo '')"
+          # Check if HEAD is at a tag (prepare-release may have just tagged it)
+          if head_tag="$(git describe --exact-match --tags HEAD 2>/dev/null)" && [[ -n "$head_tag" ]]; then
+            echo "detected_tag=$head_tag" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
           
-          if [[ -n "$latest_tag" ]]; then
+          # Fall back to finding the most recent tag
+          if latest_tag="$(git describe --tags --abbrev=0 2>/dev/null)" && [[ -n "$latest_tag" ]]; then
             echo "detected_tag=$latest_tag" >> "$GITHUB_OUTPUT"
           fi