[Feature]: Add Cmd+/ shortcut to open Keybindings settings

[LunarRed]

Before submitting

• I searched existing issues and did not find a duplicate.
• I am describing a concrete problem or use case, not just a vague idea.

Area

apps/web

Problem or use case

T3 Code already has a Keybindings section in Settings, but there is no direct keyboard shortcut for opening it. That makes the available shortcuts and customization options harder to discover, especially for users accustomed to pressing Cmd+/ to find keyboard shortcuts in apps such as ChatGPT and Codex.

Proposed solution

Add a bindable command, such as settings.openKeybindings, that navigates directly to Settings → Keybindings.

Give it a default binding of mod+/, displayed as Cmd+/ on macOS and Ctrl+/ on other platforms. Because it is a normal keybinding command, users should be able to change or remove the default.

Why this matters

This provides a fast, familiar way to discover and manage T3 Code's existing shortcuts without adding another settings interface or permanent navigation control.

Smallest useful scope

Add one keybinding command that opens the existing Keybindings settings section. No new modal, shortcut editor, search interface, or header button is needed.

Alternatives considered

• Open Settings manually and navigate to Keybindings.
• Add a searchable keyboard-shortcuts modal like ChatGPT or Codex.
• Add a permanent Shortcuts button, as proposed in [Feature]: Improve visibility of key bindings #1044.

The direct settings shortcut is smaller and reuses the interface T3 Code already has. It also addresses the discoverability concern from #1044 without duplicating the existing settings UI.

Risks or tradeoffs

The shortcut should use the existing keybinding conflict and focus-handling rules, especially when the terminal or an embedded browser has focus. Since the command itself is rebindable, users can resolve any platform-specific conflict.

Examples or references

• Related, but broader and closed: [Feature]: Improve visibility of key bindings #1044
• ChatGPT and Codex use Cmd+/ to expose keyboard shortcuts.

Contribution

• I would be open to helping implement this.