[dormouse-bot]

The pairing walkthrough's happy scenario stalled at connectPocket. It waited for the Type reserve's Focus terminal input button and later clicked the Type input mode/Sessions input mode selector. The mobile redesign (f3072ab) removed all of them, so the step would time out after 120 s. The Pocket helpers in scripts/pairing-walkthrough/steps.mjs now use the current composition (lib/src/components/MobileTerminalUi.tsx):

• Wall ready: the Type button inside section[aria-label="Touch mode"], plus .xterm. The selector is scoped to the bar because the composer dialog is also labelled Type.
• Typing a command: click Type, check that focus is in the [data-mobile-composer] textarea, inserttext, then click the composer's Send. Pressing Enter in that textarea would only add a newline. Send closes the composer, so the existing spare-Enter retries reach the terminal through the physical-keyboard path. If the Sessions screen is open, the helper first presses Back to terminal, because the composer closes on that screen.
• Ring check: open the Sessions screen through the wall header's Show sessions title, then read rows from the screen's list block. A ringing row is still detected by [data-alert-ring-inset].
• Leave and reconnect: the "‹ Burrows" button is now only on the Sessions screen, in Pocket's sessionsHeader. The step opens that screen and clicks section[aria-label="Sessions"] header button.

The stale mobile-terminal-ui.md → "Keyboard focus" citation now names "Keyboard focus invariant".

Verification, and its limit. I have not run the walkthrough itself. The CI sandbox refuses AF_UNIX sockets (socket(AF_UNIX, …) = EAFNOSUPPORT), and both agent-browser's daemon and Chrome's process singleton need them, so neither browser can start. Instead, a throwaway jsdom test (not committed) rendered Pocket's real ConnectedView → PocketWall → MobileTerminalUi, with only TerminalPane and the terminal registry mocked. It ran the helper expressions read verbatim out of steps.mjs and passed every stage:

• the wall-ready check
• the composer taking focus
• Send handing the text to doPaste and then writing \r
• a spare Enter reaching writeUserInput
• a ringing 777;notify row found on the Sessions screen
• Back to terminal followed by Type
• the back button calling onLeave

jsdom does not show whether agent-browser's CDP click on Type opens a focused composer in real Chrome, or whether inserttext lands in it. One node scripts/pairing-walkthrough/run.mjs on a machine with Chrome would settle that.

Closes #1612 — automated triage

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