test(plan): cover the final-state tails and refresh the TUI golden

The idle /plan and /plan off command paths pin the immediate-commit copy;
the chip's dead leaving/locked guard is deleted (both states disable the
button, so no click reaches the handler); the multi-turn TUI golden is
re-recorded keyless over the idle-commit wording and the standalone
plan/mode narration ordering.

packages/client/ui-plan/src/client/PlanModeControl.tsx

@@ -37,7 +37,7 @@ export function PlanChip({ useProjection, locked, exitPlanMode }: PlanChipProps)
   if (!target) return null
 
   const off = (): void => {
-    if (leaving || locked) return
+    // No leaving/locked guard: both disable the button, so no click arrives.
     setLeaving(true)
     setError(null)
     void exitPlanMode().then((failure) => {