feat(coding-agent): add message copy shortcut

packages/coding-agent/src/core/extensions/runner.ts

@@ -78,6 +78,7 @@ const RESERVED_KEYBINDINGS_FOR_EXTENSION_CONFLICTS = [
 	"app.tools.expand",
 	"app.thinking.toggle",
 	"app.editor.external",
+	"app.message.copy",
 	"app.message.followUp",
 	"tui.input.submit",
 	"tui.select.confirm",

packages/coding-agent/src/core/keybindings.ts

@@ -23,6 +23,7 @@ export interface AppKeybindings {
 	"app.thinking.toggle": true;
 	"app.session.toggleNamedFilter": true;
 	"app.editor.external": true;
+	"app.message.copy": true;
 	"app.message.followUp": true;
 	"app.message.dequeue": true;
 	"app.clipboard.pasteImage": true;
@@ -95,6 +96,10 @@ export const KEYBINDINGS = {
 		defaultKeys: "ctrl+g",
 		description: "Open external editor",
 	},
+	"app.message.copy": {
+		defaultKeys: "ctrl+x",
+		description: "Copy message to clipboard",
+	},
 	"app.message.followUp": {
 		defaultKeys: "alt+enter",
 		description: "Queue follow-up message",
@@ -112,11 +117,11 @@ export const KEYBINDINGS = {
 	"app.session.fork": { defaultKeys: [], description: "Fork current session" },
 	"app.session.resume": { defaultKeys: [], description: "Resume a session" },
 	"app.tree.foldOrUp": {
-		defaultKeys: ["ctrl+left", "alt+left"],
+		defaultKeys: process.platform === "darwin" ? ["alt+left", "ctrl+left"] : ["ctrl+left", "alt+left"],
 		description: "Fold tree branch or move up",
 	},
 	"app.tree.unfoldOrDown": {
-		defaultKeys: ["ctrl+right", "alt+right"],
+		defaultKeys: process.platform === "darwin" ? ["alt+right", "ctrl+right"] : ["ctrl+right", "alt+right"],
 		description: "Unfold tree branch or move down",
 	},
 	"app.tree.editLabel": {