a497fccd06
Follow-up to #717. Replaces all remaining hardcoded keybinding hints with configurable ones. - Add pasteImage to AppAction so it can be configured in keybindings.json - Create keybinding-hints.ts with reusable helper functions: - editorKey(action) / appKey(keybindings, action) - get key display string - keyHint(action, desc) / appKeyHint(kb, action, desc) / rawKeyHint(key, desc) - styled hints - Export helpers from components/index.ts for extensions - Update all components to use configured keybindings - Remove now-unused getDisplayString() from KeybindingsManager and EditorKeybindingsManager - Use keybindings.matches() instead of matchesKey() for pasteImage in custom-editor.ts