Collector emits a single JSON envelope for every agent session (Souveraine,
Claude Code, Codex) and always exits 0; a failing provider reports
available:false rather than taking the envelope down.
AgentSessions.qml owns the cadence and projects the envelope. Transport is not
the contract: when the TASK-69 daemon lands, only the source changes.
Island is a morph host for the bar - dot on a cramped bar, pill where there is
room, derived from the same threshold BarContent uses.
Inert until registered in services/qmldir and mounted; see patches/0005.
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