Fix macOS tab jump shortcut conflict (#859)

CHANGELOG.md

@@ -33,6 +33,7 @@
 - iOS project picker now submits the typed path. ([#831](https://github.com/getpaseo/paseo/pull/831))
 - System messages and chat mentions routed to multiple agents now reach every recipient consistently. ([#830](https://github.com/getpaseo/paseo/pull/830))
 - Clicking a Markdown link in agent output no longer reloads the desktop app on top of opening the link.
+- macOS desktop tab-jump shortcuts now use Cmd+Option+1-9, avoiding conflicts with Option-based international keyboard characters such as `@`.
 
 ### Security
 

packages/app/src/keyboard/keyboard-shortcuts.test.ts

@@ -148,9 +148,16 @@ describe("keyboard-shortcuts", () => {
       payload: { index: 2 },
     },
     {
-      name: "matches tab index jump on desktop via Alt+digit",
+      name: "matches tab index jump on mac desktop via Cmd+Alt+digit",
+      event: { key: "@", code: "Digit2", metaKey: true, altKey: true },
+      context: { isMac: true, isDesktop: true },
+      action: "workspace.tab.navigate.index",
+      payload: { index: 2 },
+    },
+    {
+      name: "matches tab index jump on non-mac desktop via Alt+digit",
       event: { key: "2", code: "Digit2", altKey: true },
-      context: { isDesktop: true },
+      context: { isMac: false, isDesktop: true },
       action: "workspace.tab.navigate.index",
       payload: { index: 2 },
     },
@@ -333,6 +340,11 @@ describe("keyboard-shortcuts", () => {
       event: { key: "t", code: "KeyT", ctrlKey: true },
       context: { isMac: true },
     },
+    {
+      name: "keeps mac Option+digit available for international text input",
+      event: { key: "@", code: "Digit2", altKey: true },
+      context: { isMac: true, isDesktop: true, focusScope: "message-input" },
+    },
     {
       name: "does not match Ctrl+K for command center on non-mac in terminal",
       event: { key: "k", code: "KeyK", ctrlKey: true },
@@ -477,16 +489,17 @@ describe("keyboard-shortcut help sections", () => {
         "new-agent": ["mod", "shift", "O"],
         "workspace-tab-new": ["mod", "T"],
         "workspace-jump-index": ["mod", "1-9"],
-        "workspace-tab-jump-index": ["alt", "1-9"],
+        "workspace-tab-jump-index": ["mod", "alt", "1-9"],
         "workspace-tab-close-current": ["meta", "W"],
         "workspace-pane-split-right": ["mod", "\\"],
         "workspace-pane-close": ["mod", "shift", "W"],
       },
     },
     {
-      name: "shows Ctrl+W close tab for non-mac desktop",
+      name: "uses non-mac desktop defaults for tab jump and close tab",
       context: { isMac: false, isDesktop: true },
       expectedKeys: {
+        "workspace-tab-jump-index": ["alt", "1-9"],
         "workspace-tab-close-current": ["ctrl", "W"],
       },
     },

packages/app/src/keyboard/keyboard-shortcuts.ts

@@ -292,11 +292,24 @@ const SHORTCUT_BINDINGS: readonly ShortcutBinding[] = [
   },
 
   // --- Tab index jump ---
+  {
+    id: "workspace-tab-navigate-index-cmd-alt-digit-mac-desktop",
+    action: "workspace.tab.navigate.index",
+    combo: "Cmd+Alt+Digit",
+    when: { mac: true, desktop: true, commandCenter: false },
+    payload: { type: "index" },
+    help: {
+      id: "workspace-tab-jump-index",
+      section: "navigation",
+      label: "Jump to tab",
+      keys: ["mod", "alt", "1-9"],
+    },
+  },
   {
     id: "workspace-tab-navigate-index-alt-digit-desktop",
     action: "workspace.tab.navigate.index",
     combo: "Alt+Digit",
-    when: { desktop: true, commandCenter: false },
+    when: { mac: false, desktop: true, commandCenter: false },
     payload: { type: "index" },
     help: {
       id: "workspace-tab-jump-index",