Fix terminal scrolling and focus behavior

[Raeedzz]

Summary

• run Codex in its supported inline mode so terminal output participates in Goonware's native scrollback while preserving the original command in history
• remove the redundant agent status strip and reclaim the full native terminal viewport
• route terminal clicks through the currently mounted input layer and only preserve selections that belong to the clicked terminal
• update the related agent-activity language and add focused regression coverage

Root cause

Codex defaults to the alternate screen without enabling mouse reporting, so Goonware's safe wheel bridge had nothing to forward and scrolling became a no-op. Terminal focus also treated any document selection as belonging to the clicked pane and used agent mode alone to choose the input target. A selection left in another pane, or an inline raw prompt using the passthrough input, could therefore leave typing routed to the previous pane.

Impact

Codex sessions now scroll through the normal native transcript, agent content gets the full terminal area, and clicking the main terminal reliably moves keyboard focus without breaking local drag selections.

Validation

• bun run test — 320 tests passed
• bun run typecheck
• cargo test --lib — 316 tests passed