fix: rename temp file before upload so asset gets correct filename

The gh release upload command uses the actual filename, not the #label
syntax, for the asset name. Renaming the temp file before uploading
ensures assets get descriptive names instead of 'tmp.XXXXXXXXXX'.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Eli Cortez

.github/workflows/migrate-blob-to-release.yml

@@ -131,16 +131,21 @@ jobs:
             FILE_SIZE=$(stat -c%s "$TMPFILE")
             echo "Downloaded: ${FILE_SIZE} bytes"
 
+            # Rename temp file so the asset gets the correct filename
+            UPLOAD_DIR=$(mktemp -d)
+            mv "$TMPFILE" "$UPLOAD_DIR/$ASSET_NAME"
+            TMPFILE="$UPLOAD_DIR/$ASSET_NAME"
+
             # Upload to the release
-            if gh release upload "$TAG" "$TMPFILE#$ASSET_NAME" --clobber; then
+            if gh release upload "$TAG" "$TMPFILE" --clobber; then
               echo "PASS: $ASSET_NAME"
               PASS=$((PASS + 1))
             else
               echo "::warning::FAIL upload $ASSET_NAME"
               FAIL=$((FAIL + 1))
             fi
 
-            rm -f "$TMPFILE"
+            rm -rf "$UPLOAD_DIR"
 
           done < "$URL_FILE"