Human Explorer leg exposed the split: FELHOM-SPIKE renders (WSD PASS) but the
double-click fails 0x80070035 — flat name resolves by no path (DNS/LLMNR/NetBIOS
all silent; disable netbios=yes). By-IP mount works => SMB is healthy, the gap is
name resolution. Fix verified live: adding nmbd (NetBIOS) => nbtstat lists
FELHOM-SPIKE, ping resolves, \FELHOM-SPIKE\spike-share mounts by name. R-7 must
ship smbd+wsdd+nmbd (+avahi/.local), not wsdd alone.
Verdict: appliance guest is LAN-bridged; multicast discovery works only in the
guest netns (guest-direct or docker --network host) — default bridge is deaf to
LAN multicast. Real samba+wsdd on host-net: Windows 11 ProbeMatch + 445 + SMB
round-trip PASS; SSDP MediaServer:1 reaches LAN clients. R-7 => host-network
LAN-bound; R-8 Jellyfin-DLNA plausible if host-network. ROADMAP R-6 -> spiked,
R-7/R-8 unblocked. S4.4 Explorer render pending human.