Fix duplicate CI runs: remove tags trigger, detect tags on commit

Pushing to main + a tag triggered 6 workflows (3 per trigger).
Now only main pushes trigger builds. The upload step detects version
tags on the current commit via git tag --points-at HEAD.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/build-macos.yml

@@ -3,7 +3,6 @@ name: Build macOS
 on:
   push:
     branches: [main]
-    tags: ["v*"]
   pull_request:
     branches: [main]
 
@@ -65,15 +64,16 @@ jobs:
 
       # ── Release ──
       - name: Upload to release
-        if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v')
+        if: github.ref == 'refs/heads/main'
         env:
           BUILD_TOKEN: ${{ secrets.BUILD_TOKEN }}
         run: |
           REPO_API="${GITHUB_SERVER_URL}/api/v1/repos/${GITHUB_REPOSITORY}"
 
-          # Use version tag for tag pushes, "latest" for main
-          if [[ "${GITHUB_REF}" == refs/tags/* ]]; then
-            TAG="${GITHUB_REF#refs/tags/}"
+          # Check if the current commit has a version tag
+          VERSION_TAG=$(git tag --points-at HEAD | grep '^v' | head -1)
+          if [ -n "${VERSION_TAG}" ]; then
+            TAG="${VERSION_TAG}"
             RELEASE_NAME="Voice to Notes ${TAG}"
             PRERELEASE=false
           else