fix: improve upload error handling and include file size in upload logs

.gitea/workflows/build.yaml

@@ -85,20 +85,26 @@ jobs:
             local attempt=1
 
             while [ $attempt -le $MAX_RETRIES ]; do
-              echo "Uploading ${name} (attempt ${attempt}/${MAX_RETRIES})..."
-              HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" \
+              local filesize
+              filesize=$(stat -c%s "$file" 2>/dev/null || stat -f%z "$file" 2>/dev/null || echo "unknown")
+              echo "Uploading ${name} (${filesize} bytes, attempt ${attempt}/${MAX_RETRIES})..."
+              RESPONSE=$(curl -s -w "\n%{http_code}" \
+                --max-time 300 \
                 -X POST \
                 -H "Authorization: token ${TOKEN}" \
                 -H "Expect:" \
                 -F "attachment=@${file}" \
                 "${GITEA_URL}/api/v1/repos/${REPO}/releases/${RELEASE_ID}/assets?name=${encoded_name}")
+              HTTP_CODE=$(echo "$RESPONSE" | tail -1)
+              BODY=$(echo "$RESPONSE" | head -n -1)
 
-              if [ "$HTTP_CODE" -ge 200 ] && [ "$HTTP_CODE" -lt 300 ]; then
+              if [ "$HTTP_CODE" -ge 200 ] 2>/dev/null && [ "$HTTP_CODE" -lt 300 ] 2>/dev/null; then
                 echo "✅ Uploaded ${name}"
                 return 0
               fi
 
-              echo "⚠️  Upload failed (HTTP ${HTTP_CODE}), retrying in 5s..."
+              echo "⚠️  Upload failed (HTTP ${HTTP_CODE}), body: ${BODY}"
+              echo "Retrying in 5s..."
               sleep 5
               attempt=$((attempt + 1))
             done