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"@jmfederico/pi-web": patch
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Fix a duplicate session appearing in the list when starting a new session. The `session.created` broadcast (added with the spawn_session tool) could race ahead of the start request's HTTP response in the same tab, leaving two badges with the same id — one with archive/reload actions and one with delete. The optimistic insert now replaces any entry the broadcast added, so the locally cached session (with its delete action and draft support) always wins.