Adoption of a second home only wrapped the file handlers that existed at
adoption time. A later setup_logging(hermes_home=<known>, mode="gateway")
skipped _adopt_secondary_home (the home is already served) and appended a
bare _ManagedRotatingFileHandler for gateway.log, which carries no home
filter and so took every profile's gateway records. When a router is
already queued, the new handler is now wrapped in a _ProfileRoutingFileHandler
over the union of the live routers' homes.
Review finding: setup_logging(A); setup_logging(B); setup_logging(A, mode="gateway") wrote gw-b into A's gateway.log.
teknium1
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