The previous fix (a1ba915ca) correctly added customDisplayName to the WebSocket
payload and made it persist in Settings, but the main Docker tab's RESOURCE
column still showed the default name.
DockerUnifiedTable had four locations that built display names but ignored
customDisplayName:
- DockerHostGroupHeader (RESOURCE column header) - line 549
- containerMatchesToken (search/filter logic) - line 391
- serviceMatchesToken (search/filter logic) - line 472
- sortedHosts (host sorting logic) - lines 1879-1880
All four now prioritize customDisplayName first, matching the pattern used in
DockerHostSummaryTable and Settings (customDisplayName || displayName ||
hostname || id).
This ensures custom Docker host names display consistently across the entire UI.
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