[BUG] Help dialog cant be opened

## Description - `help_toggle` uses `?` in `default-keybind.toml`, but when pressing `?`, the keybinding parser never matches and the help dialog never opens. ## Environment ```sh $ rustc --version rustc 1.93.0 (254b59607 2026-01-19) $ fastfetch -l none OS: Windows 11 Pro Insider Preview (25H2) x86_64 Kernel: WIN32_NT 10.0.26300.7674 Uptime: 2 days, 8 mins Shell: PowerShell 7.6.0 WM: Desktop Window Manager 10.0.26100.7541 Terminal: Windows Terminal Preview 1.24.3504.0 CPU: 12th Gen Intel(R) Core(TM) i7-12850HX (24) @ 4.80 GHz Memory: 20.12 GiB / 31.69 GiB (64%) Swap: 1.26 GiB / 23.00 GiB (5%) ``` ## Steps to reproduce 0. Run the app. 1. Press `?` (`shift-/`) from the main view. 2. Help dialog does not appear. ## Expected behavior - Pressing ? opens the help dialog. Instead, nothing happens because the key event lookup fails. ## Solution - Further reviewing can be done in PR.