The direct diagnostics loop caught non-abort server errors without recording them, so a file whose every applicable server failed produced an empty aggregate rendered as OK with success: true — a false-negative hiding a total diagnostics failure.
Track per-file and global success/failure counts: zero successful server responses now yields success: false with an explicit failure line, while partial success still surfaces diagnostics and names the servers that failed.
Fixes#8377
roboomp
dce0216bcb