* feat(web): make chat reverse-i-search shortcut configurable
Ctrl+R was hardcoded in the TipTap ProseMirror plugin and could not be
rebound from Settings → Shortcuts. Register REVERSE_SEARCH in the
shared shortcut registry and resolve the binding through the user
overrides ref so the Settings UI exposes it like every other shortcut.
Default stays Ctrl+R (plain Ctrl, not ctrlOrCmd) so Cmd+R on macOS
keeps reloading the browser tab.
* test(web): cover REVERSE_SEARCH in shortcut-overrides tests
Bump toHaveLength(12) → toHaveLength(13), add toContain check, and
add the label/default assertion in the "each entry" block. Without
this, CI fails on the configurable-shortcut count assertion.
---------
Co-authored-by: Kandev Agent <agent@kandev.dev>
João Salavisa
85a1333dec