fix(keymap): unblock ~46 integration tests by retiring ctrl-b binding on linux/windows

[BunsDev]

Summary

ctrl-b is the ASCII STX control character. The Workspace ToggleWarpDrive action was registering ctrl-b as its Linux/Windows binding, which failed is_binding_pty_compliant validation at boot. KeymapMatcher::validate_all_bindings then panicked at crates/warpui_core/src/keymap/matcher.rs:197 (Bindings failed validation), taking out ~50+ integration tests that boot the harness — every ui_tests::* test and most shell-integration tests.

Fix

One-line change in app/src/workspace/mod.rs:707: switch ctrl-b → ctrl-shift-B, matching the cmd_or_ctrl_shift convention for Mac-only single-letter shortcuts that collide with PTY control characters elsewhere.

Verification

Local run (macOS, same panic surface as Linux/Windows since the binding registers on both):

Step	Result
cargo check -p warp-app	✅ passes
cargo test -p integration --test integration	211 passed, 8 failed, 63 ignored (was ~50+ tests panicking at the keymap validator before this fix)

The 8 remaining failures are unrelated:

• 5 SSH harness tests (test_ctrl_c, test_legacy_ssh_into_{bash,zsh}, test_ssh_into_{sh,ash})
• 3 vertical context-menu / SSH override tests (test_vertical_{pane,tab}_context_menu_copies_metadata, test_ssh_with_shell_override)

Those are separate root causes — should be cut as follow-up PRs.

Note

This PR is independent of #164. #164 fixes 8 unrelated unit-test failures (auth_manager, blocklist, etc.). Both can land in either order against main.

Test plan

• CI Warp CI on Linux/Windows/macOS — Run X tests jobs should drop from ~50+ failing to ≤8 failing.

[Copilot]

Copilot encountered an error and was unable to review this pull request. You can try again by re-requesting a review.

[BunsDev]

Self-review notes (can't formally approve own PR):

Verified locally:

• Grepped the tree for ctrl-shift-B / ctrl-shift-b — no other literal binding uses it, so no static conflict.
• cmd_or_ctrl_shift is the established convention (FocusInput, CommandPalette, NewTab, Find, etc. in app/src/util/bindings.rs).
• The fix is the right Linux/Windows-only escape from the STX PTY-compliance trap; Mac stays on cmd-b correctly.

Nit / heads-up (non-blocking):
CustomAction::ToggleBookmarkBlock is bound to cmd_or_ctrl_shift("b") at app/src/util/bindings.rs:361, which also resolves to ctrl-shift-B on Linux/Windows. It lives in the Terminal context with BlockSelectionCardinality != None, while ToggleWarpDrive is in Workspace — so the matcher should disambiguate via context specificity, but worth eyeballing the in-progress integration tests once they finish to confirm neither shadows the other when a terminal block is selected.

The load-bearing concern is the boot-time panic taking out ~46 tests; this fix resolves it cleanly. The 8 unrelated SSH/context-menu failures should get a tracking issue if they don't already have one.