fix(editor): removed ? shortcut that opened hotkeys when input was empty

- Dropped `onShowHotkeys` callback and its binding from `CustomEditor` and `InputController`.
- `?` now inserts a literal question mark regardless of editor state; use `/hotkeys` explicitly.
- Added regression test confirming `?` is treated as plain input when the editor is empty.

packages/coding-agent/CHANGELOG.md

@@ -10,6 +10,7 @@
 ### Changed
 
 - Changed Shift+Ctrl+P to cycle role models backward instead of cycling forward without persisting.
+- Changed empty prompt input so `?` inserts a literal question mark instead of opening `/hotkeys`; use `/hotkeys` explicitly for the shortcut reference.
 - Changed `search` output to preserve full virtual and internal URL paths in grouped results and `details.files` instead of collapsing them to file basenames
 - Changed `/omfg` to run up to three generation attempts with validation feedback and only prompt saving when no draft matches assistant history
 - Changed `/omfg` to show a live draft panel with generation/validation/saving status and allow canceling an active rule request with `Esc`

packages/coding-agent/src/modes/components/custom-editor.ts

@@ -61,7 +61,6 @@ export class CustomEditor extends Editor {
 	onExternalEditor?: () => void;
 	onHistorySearch?: () => void;
 	onSuspend?: () => void;
-	onShowHotkeys?: () => void;
 	onSelectModelTemporary?: () => void;
 	/** Called when the configured copy-prompt shortcut is pressed. */
 	onCopyPrompt?: () => void;
@@ -221,12 +220,6 @@ export class CustomEditor extends Editor {
 			return;
 		}
 
-		// Intercept ? when editor is empty to show hotkeys
-		if (data === "?" && this.getText().length === 0 && this.onShowHotkeys) {
-			this.onShowHotkeys();
-			return;
-		}
-
 		// Check custom key handlers (extensions)
 		for (const [keyId, handler] of this.#customKeyHandlers) {
 			if (matchesKey(data, keyId)) {

packages/coding-agent/src/modes/controllers/input-controller.ts

@@ -183,7 +183,6 @@ export class InputController {
 		this.ctx.editor.onToggleThinking = () => this.ctx.toggleThinkingBlockVisibility();
 		this.ctx.editor.setActionKeys("app.editor.external", this.ctx.keybindings.getKeys("app.editor.external"));
 		this.ctx.editor.onExternalEditor = () => void this.openExternalEditor();
-		this.ctx.editor.onShowHotkeys = () => this.ctx.handleHotkeysCommand();
 		this.ctx.editor.setActionKeys(
 			"app.clipboard.pasteImage",
 			this.ctx.keybindings.getKeys("app.clipboard.pasteImage"),

packages/coding-agent/test/custom-editor-keybindings.test.ts

@@ -10,6 +10,16 @@ function createEditor() {
 	return new CustomEditor(defaultEditorTheme);
 }
 
+describe("CustomEditor literal question mark input", () => {
+	it("does not reserve ? as a hotkeys shortcut when the editor is empty", () => {
+		const editor = createEditor();
+
+		editor.handleInput("?");
+
+		expect(editor.getText()).toBe("?");
+	});
+});
+
 describe("CustomEditor temporary model selector keybinding", () => {
 	it("triggers the temporary selector from a remapped action key instead of Alt+P", () => {
 		const editor = createEditor();

packages/coding-agent/test/input-controller-escape.test.ts

@@ -17,7 +17,6 @@ type FakeEditor = {
 	onSelectModelTemporary?: () => void;
 	onSelectModel?: () => void;
 	onHistorySearch?: () => void;
-	onShowHotkeys?: () => void;
 	onPasteImage?: () => void;
 	onCopyPrompt?: () => void;
 	onExpandTools?: () => void;

packages/coding-agent/test/input-controller-keybindings.test.ts

@@ -14,7 +14,6 @@ type FakeEditor = {
 	onSelectModelTemporary?: () => void;
 	onSelectModel?: () => void;
 	onHistorySearch?: () => void;
-	onShowHotkeys?: () => void;
 	onPasteImage?: () => Promise<boolean>;
 	onCopyPrompt?: () => void;
 	onExpandTools?: () => void;