PR #34588 real dev verification, Linux, 2026-11-15
Base: github/main bee9eb593939fb89c6aa6c5f308556ca1deb4b5d
Head: sti0:fix/terminal-ctrl-b e457a7a57b223edbe302f206cb0865936fb25f0d

Setup:
- Separate main worktree, vp i, isolated empty .t3 state; no fixtures or seed data.
- Stopped main by captured process group before starting the exact PR head.
- PR vp i, explicit --home-dir /home/user/t3code/.t3.
- Playwright from repo dependencies, /usr/bin/google-chrome, real dev web clients.
- Added /home/user/terminal-verification via Add project > Local folder in each app.
- Selected Codex GPT-6.1-Sol in each composer and submitted:
  Read README.md using a shell command. Reply with exactly: terminal verification ready. Do not change any files.
- Both provider turns completed, rendered: terminal verification ready.

Main reproduction, actual terminal keyboard input:
- Focused drawer terminal, started a raw single-byte reader.
- Ctrl+B: sidebar expanded -> collapsed; reader received no byte (screenshot).
- Started tmux -L ctrl-b-main -f /dev/null new-session -s verification.
- Ctrl+B then c: sidebar expanded -> collapsed; c appeared at shell prompt.
$ tmux -L ctrl-b-main list-windows -F "#{window_index}:#{window_name}"
0:bash

PR verification, actual terminal keyboard input:
- Drawer: read -r key; printf %s "$key" | od -An -tu1 | tee /tmp/pr-ctrl-b-byte.txt
- Ctrl+B, Enter: sidebar remains expanded; terminal retains focus.
$ cat /tmp/pr-ctrl-b-byte.txt
   2
- Started tmux -L ctrl-b-pr -f /dev/null new-session -s verification.
- Ctrl+B then c: second tmux window opens; sidebar remains expanded.
$ tmux -L ctrl-b-pr list-windows -F "#{window_index}:#{window_name}"
0:bash
1:bash
- Opened a right-panel Terminal through the UI. Repeated byte read, Ctrl+B, Enter.
- Focus owner right-panel; sidebar remains expanded.
$ cat /tmp/pr-panel-ctrl-b-byte.txt
   2

Nearby behavior:
- Empty composer focus, Ctrl+B twice: expanded -> collapsed -> expanded.
- Selected composer text, Ctrl+B: rendered <strong>bold shortcut</strong>; sidebar stays expanded.
- Running shell sleep, Ctrl+C: interrupted; next command completed.
$ cat /tmp/interrupt-recovered
interrupt recovered
- No /tmp/interrupt-unexpected file created.

Focused checks through Blacksmith:
vp i && vp test run apps/web/src/keybindings.test.ts
Test Files 1 passed (1)
Tests 47 passed (47)
GitHub head CI: all reported applicable checks passed; platform-specific jobs skipped.
No source changes, commits, or pushes were needed.

Not verified:
Native Electron, macOS Cmd+B, Windows Ctrl+B, iOS/Android, remote/relay/tunnel connections,
custom keybinding configurations, or other provider runtimes.