docs(tui): refresh stale comments for the input-required strip

The collapse-order comment still called worker_wait the last optional cut after input_required followed it, and the chrome compose-key comment claimed an exhaustive input list that omitted the strip text it now composes.

Author: bwachman

src/tui/geometry/zones.ts

@@ -213,8 +213,9 @@ export const COLLAPSE_ORDER = [
   // banner and strip.
   "pending",
   // A parked worker is standing state the operator cannot see anywhere else
-  // once the wake turn scrolls away, so its single row is the last optional
-  // cut, just ahead of prompt growth reclaim.
+  // once the wake turn scrolls away, so its single row is one of the last
+  // optional cuts, just ahead of prompt growth reclaim. The input-required
+  // strip below it is newer chrome, so it is the very last optional cut.
   "worker_wait",
   "input_required",
   // prompt growth reclaimed next (handled specially; never below PROMPT_BASE_ROWS)

src/tui/shell/chrome.ts

@@ -281,7 +281,28 @@ function operatorInputRequiredChunks(
 }
 
 /**
- * Key over every input a chrome paint reads; a miss leaves stale chrome.
+ * Every input the chrome compose paths read, as one comparable key. A missed
+ * input here means stale chrome, so this list is exhaustive:
+ *
+ * - notice row: the composed `noticeText` output (folds in the in-flight
+ *   tool and its start time, `lockupNowMs` as the waiting-on clock, the
+ *   interrupt flash, transcript pin state, the status flash, and pending
+ *   attachment count)
+ * - pending column: the session queue's items as composed row text, plus the
+ *   selected item id - nav repaints the highlight without touching row text
+ * - border geometry: `layout.contentWidth`
+ * - top rule: MCP-needs-auth presence, plugin-needs-attention, `modelLabel`
+ * - bottom rule: workspace cwd and branch, `homedir()` (label compression)
+ * - both rules' lockup slot: `lockupNowMs`, `lockupAnimating`, `lockupPhase`,
+ *   `lockupChangedMs`, `lockupRampPhase`, `lockupStalledForMs`
+ * - cost meter: band, percent label, cost label (or absence)
+ * - landing suggestions: whether the prompt has text
+ * - WORKER WAITING strip: its composed text at the current width (folds in
+ *   the selected identity, its preview, and the additional count)
+ * - INPUT REQUIRED strip: its composed text at the current width (folds in
+ *   the selected question preview and the additional count)
+ *
+ * Landing and zone paints read their own state and do not pass through here.
  */
 function chromeComposeKey(
   shell: AppShell,