The union agent roster (host.agents) enumerates EVERY registered connection,
including the active gateway that already answered profiles.list. The plugin
merger treated the active gateway's own agents as rows from other sources
because a remote-primary desktop reports them with connectionKind 'remote',
so every bot appeared twice (baseline) and kept growing with each refetch.
Match union agents to the active gateway via the new primaryConnectionId
field on the roster RPC response and annotate the local rows in place
instead of appending phantom copies. Same-named profiles on genuinely
separate sources (This device, other remotes) still get their own tagged
rows, preserving the @name-device disambiguation rule.
Fall back to the legacy connectionKind==='local' rule when
primaryConnectionId is absent (older Electron builds), so single-source
behavior is byte-identical.
Fixes#88344
netease
185209242e