- Fixed Agent Hub display to render in editorContainer instead of floating ui overlay.
- Fixed close flow to clear editorContainer, re-add the editor, and restore editor focus.
- Updated Agent Hub activation tests and removed the probe test fixture.
- Updated OpenAI context promotion linking to resolve target models by parsed version and provider/API match instead of fixed bare ids.
- Scanned available siblings to select the plainest matching gpt-5.4 fallback so namespaced, dotted, and dated 5.5 variants promote correctly.
- Adjusted the TUI render stress shadow writer to ignore alternate-screen regions and replay only normal-screen bytes after exits.
- Added an `isEmpty` getter on `AgentHubOverlayComponent` to report whether no subagent rows were loaded.
- Extended `showAgentHub` with an optional `requireContent` flag so the overlay is disposed early when empty under the double-<- path.
- Added tests for double-<- gating behavior with no subagents, with subagents, and explicit hub-open behavior.
- Added a SessionFocusController to switch transcript and input context between main and subagent sessions.
- Added agent-hub Enter activation and double-left return behavior for focused local agents.
- Added view-session-based event and render logic to avoid stale focus-session state.
- Added status-line focused agent display with ghost icon and focused-mode border dimming.
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