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
