fix: prevent duplicate release assets on re-triggered CI workflows

Gitea silently appends duplicate asset names. Added delete-before-upload
logic to both Windows and Linux asset upload steps.

.gitea/workflows/release.yml

@@ -131,27 +131,31 @@ jobs:
           RELEASE_ID="${{ needs.create-release.outputs.release_id }}"
           BASE_URL="${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}"
 
-          # Upload ZIP
+          # Upload helper — deletes existing asset with same name to prevent duplicates on re-run
-          ZIP_FILE=$(ls build/LedGrab-*.zip | head -1)
+          upload_asset() {
-          if [ -f "$ZIP_FILE" ]; then
+            local FILE="$1"
+            local NAME=$(basename "$FILE")
+            EXISTING_ID=$(curl -s "$BASE_URL/releases/$RELEASE_ID/assets" \
+              -H "Authorization: token $GITEA_TOKEN" \
+              | python3 -c "import sys,json; assets=json.load(sys.stdin); print(next((str(a['id']) for a in assets if a['name']=='$NAME'),''))" 2>/dev/null)
+            if [ -n "$EXISTING_ID" ]; then
+              curl -s -X DELETE "$BASE_URL/releases/$RELEASE_ID/assets/$EXISTING_ID" \
+                -H "Authorization: token $GITEA_TOKEN"
+              echo "Replaced existing asset: $NAME"
+            fi
             curl -s -X POST \
-              "$BASE_URL/releases/$RELEASE_ID/assets?name=$(basename "$ZIP_FILE")" \
+              "$BASE_URL/releases/$RELEASE_ID/assets?name=$NAME" \
               -H "Authorization: token $GITEA_TOKEN" \
               -H "Content-Type: application/octet-stream" \
-              --data-binary "@$ZIP_FILE"
+              --data-binary "@$FILE"
-            echo "Uploaded: $(basename "$ZIP_FILE")"
+            echo "Uploaded: $NAME"
-          fi
+          }
+
+          ZIP_FILE=$(ls build/LedGrab-*.zip | head -1)
+          [ -f "$ZIP_FILE" ] && upload_asset "$ZIP_FILE"
 
-          # Upload installer
           SETUP_FILE=$(ls build/LedGrab-*-setup.exe 2>/dev/null | head -1)
-          if [ -f "$SETUP_FILE" ]; then
+          [ -f "$SETUP_FILE" ] && upload_asset "$SETUP_FILE"
-            curl -s -X POST \
-              "$BASE_URL/releases/$RELEASE_ID/assets?name=$(basename "$SETUP_FILE")" \
-              -H "Authorization: token $GITEA_TOKEN" \
-              -H "Content-Type: application/octet-stream" \
-              --data-binary "@$SETUP_FILE"
-            echo "Uploaded: $(basename "$SETUP_FILE")"
-          fi
 
   # ── Linux tarball ──────────────────────────────────────────
   build-linux:
@@ -194,18 +198,26 @@ jobs:
         env:
           GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
         run: |
-          TAG="${{ gitea.ref_name }}"
           RELEASE_ID="${{ needs.create-release.outputs.release_id }}"
           BASE_URL="${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}"
           TAR_FILE=$(ls build/LedGrab-*.tar.gz | head -1)
           TAR_NAME=$(basename "$TAR_FILE")
 
+          # Delete existing asset with same name to prevent duplicates on re-run
+          EXISTING_ID=$(curl -s "$BASE_URL/releases/$RELEASE_ID/assets" \
+            -H "Authorization: token $GITEA_TOKEN" \
+            | python3 -c "import sys,json; assets=json.load(sys.stdin); print(next((str(a['id']) for a in assets if a['name']=='$TAR_NAME'),''))" 2>/dev/null)
+          if [ -n "$EXISTING_ID" ]; then
+            curl -s -X DELETE "$BASE_URL/releases/$RELEASE_ID/assets/$EXISTING_ID" \
+              -H "Authorization: token $GITEA_TOKEN"
+            echo "Replaced existing asset: $TAR_NAME"
+          fi
+
           curl -s -X POST \
             "$BASE_URL/releases/$RELEASE_ID/assets?name=$TAR_NAME" \
             -H "Authorization: token $GITEA_TOKEN" \
             -H "Content-Type: application/octet-stream" \
             --data-binary "@$TAR_FILE"
-
           echo "Uploaded: $TAR_NAME"
 
   # ── Docker image ───────────────────────────────────────────