List/detail/download/delete for uploaded diagnostic reports at /admin/diagnostics, beside the Logs viewer: server-filter parity with the admin API, cursor pagination, manifest + device summary detail sheet, playback-session links into the filtered logs view, presign/stream download handling, and feature-state banner. Extracts a shared authenticated apiResponse() helper used by api() and apiDownload(). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XppCCycoaskCsW7ja1fZct