feat(model-picker): port upstream sexy redesign with favorites and search

Port T3 Code upstream commit 66c326b ("Redesign model picker with
favorites and search (pingdotgg#2153)") to MarCode. Replaces the nested Menu
dropdown with a Popover composed of a vertical provider sidebar and
content pane with tokenized fuzzy search, favorites, and keyboard-jump
shortcuts 1-9 (held under the modifier key).

MarCode-specific preservations:
- Claude brand orange (text-[#d97757]) tint on the trigger and sidebar
  icons.
- PROVIDER_OPTIONS keeps claudeAgent first; opencode and cursor remain
  non-selectable "Coming soon" sidebar entries via the new
  pickerSidebarBadge field. AVAILABLE_PROVIDER_OPTIONS filters them out
  of the selectable list; the sidebar still renders them with
  Clock3Icon + tooltip.
- /model slash-command now opens the new picker instead of inserting
  text.
- modelPicker.toggle keybinding clicks the picker trigger via the
  data-chat-provider-model-picker attribute.
- keybindings + terminalOpen props forwarded so jump labels (\u22c31-\u22c39)
  render immediately when the modifier is held.
- @marcode/contracts import path (upstream used @t3tools/contracts).
- Opencode runtime stays deleted (kept coming-soon only in UI).

Regression guards (service.notification-wiring, windowState.integration)
remain green.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: 2 people

apps/desktop/src/clientPersistence.test.ts

@@ -52,6 +52,7 @@ const clientSettings: ClientSettings = {
   confirmThreadArchive: true,
   confirmThreadDelete: false,
   diffWordWrap: true,
+  favorites: [],
   sidebarProjectSortOrder: "manual",
   sidebarThreadSortOrder: "created_at",
   timestampFormat: "24-hour",

apps/server/src/keybindings.test.ts

@@ -192,6 +192,9 @@ it.layer(NodeServices.layer)("keybindings", (it) => {
       assert.equal(defaultsByCommand.get("thread.next"), "mod+shift+]");
       assert.equal(defaultsByCommand.get("thread.jump.1"), "mod+1");
       assert.equal(defaultsByCommand.get("thread.jump.9"), "mod+9");
+      assert.equal(defaultsByCommand.get("modelPicker.toggle"), "mod+shift+m");
+      assert.equal(defaultsByCommand.get("modelPicker.jump.1"), "mod+1");
+      assert.equal(defaultsByCommand.get("modelPicker.jump.9"), "mod+9");
     }),
   );
 

apps/server/src/keybindings.ts

@@ -13,6 +13,7 @@ import {
   KeybindingShortcut,
   KeybindingWhenNode,
   MAX_KEYBINDINGS_COUNT,
+  MODEL_PICKER_JUMP_KEYBINDING_COMMANDS,
   MAX_WHEN_EXPRESSION_DEPTH,
   ResolvedKeybindingRule,
   ResolvedKeybindingsConfig,
@@ -65,13 +66,19 @@ export const DEFAULT_KEYBINDINGS: ReadonlyArray<KeybindingRule> = [
   { key: "mod+n", command: "chat.new", when: "!terminalFocus" },
   { key: "mod+shift+o", command: "chat.new", when: "!terminalFocus" },
   { key: "mod+shift+n", command: "chat.newLocal", when: "!terminalFocus" },
+  { key: "mod+shift+m", command: "modelPicker.toggle", when: "!terminalFocus" },
   { key: "mod+o", command: "editor.openFavorite" },
   { key: "mod+shift+[", command: "thread.previous" },
   { key: "mod+shift+]", command: "thread.next" },
   ...THREAD_JUMP_KEYBINDING_COMMANDS.map((command, index) => ({
     key: `mod+${index + 1}`,
     command,
   })),
+  ...MODEL_PICKER_JUMP_KEYBINDING_COMMANDS.map((command, index) => ({
+    key: `mod+${index + 1}`,
+    command,
+    when: "modelPickerOpen",
+  })),
 ];
 
 function normalizeKeyToken(token: string): string {

apps/web/src/components/AppSidebarLayout.tsx

@@ -3,23 +3,49 @@ import { useNavigate } from "@tanstack/react-router";
 
 import ThreadSidebar from "./Sidebar";
 import { Sidebar, SidebarProvider, SidebarRail } from "./ui/sidebar";
+import {
+  clearShortcutModifierState,
+  syncShortcutModifierStateFromKeyboardEvent,
+} from "../shortcutModifierState";
 
 const THREAD_SIDEBAR_WIDTH_STORAGE_KEY = "chat_thread_sidebar_width";
 const THREAD_SIDEBAR_MIN_WIDTH = 13 * 16;
 const THREAD_MAIN_CONTENT_MIN_WIDTH = 40 * 16;
-
 export function AppSidebarLayout({ children }: { children: ReactNode }) {
   const navigate = useNavigate();
 
+  useEffect(() => {
+    const onWindowKeyDown = (event: KeyboardEvent) => {
+      syncShortcutModifierStateFromKeyboardEvent(event);
+    };
+    const onWindowKeyUp = (event: KeyboardEvent) => {
+      syncShortcutModifierStateFromKeyboardEvent(event);
+    };
+    const onWindowBlur = () => {
+      clearShortcutModifierState();
+    };
+
+    window.addEventListener("keydown", onWindowKeyDown, true);
+    window.addEventListener("keyup", onWindowKeyUp, true);
+    window.addEventListener("blur", onWindowBlur);
+
+    return () => {
+      window.removeEventListener("keydown", onWindowKeyDown, true);
+      window.removeEventListener("keyup", onWindowKeyUp, true);
+      window.removeEventListener("blur", onWindowBlur);
+    };
+  }, []);
+
   useEffect(() => {
     const onMenuAction = window.desktopBridge?.onMenuAction;
     if (typeof onMenuAction !== "function") {
       return;
     }
 
     const unsubscribe = onMenuAction((action) => {
-      if (action !== "open-settings") return;
-      void navigate({ to: "/settings" });
+      if (action === "open-settings") {
+        void navigate({ to: "/settings" });
+      }
     });
 
     return () => {

apps/web/src/components/ChatView.browser.tsx

@@ -1382,6 +1382,18 @@ function dispatchChatNewShortcut(): void {
   );
 }
 
+function releaseModShortcut(key?: string): void {
+  window.dispatchEvent(
+    new KeyboardEvent("keyup", {
+      key: key ?? (isMacPlatform(navigator.platform) ? "Meta" : "Control"),
+      metaKey: false,
+      ctrlKey: false,
+      bubbles: true,
+      cancelable: true,
+    }),
+  );
+}
+
 async function triggerChatNewShortcutUntilPath(
   router: ReturnType<typeof getRouter>,
   predicate: (pathname: string) => boolean,
@@ -3658,6 +3670,29 @@ describe("ChatView timeline estimator parity (full app)", () => {
                 node: { type: "identifier", name: "terminalFocus" },
               },
             },
+            {
+              command: "thread.jump.1",
+              shortcut: {
+                key: "1",
+                metaKey: true,
+                ctrlKey: false,
+                shiftKey: false,
+                altKey: false,
+                modKey: false,
+              },
+            },
+            {
+              command: "modelPicker.jump.1",
+              shortcut: {
+                key: "1",
+                metaKey: true,
+                ctrlKey: false,
+                shiftKey: false,
+                altKey: false,
+                modKey: false,
+              },
+              whenAst: { type: "identifier", name: "modelPickerOpen" },
+            },
           ],
         };
       },
@@ -4472,6 +4507,208 @@ describe("ChatView timeline estimator parity (full app)", () => {
     }
   });
 
+  it("opens the model picker when selecting /model", async () => {
+    const mounted = await mountChatView({
+      viewport: DEFAULT_VIEWPORT,
+      snapshot: createSnapshotForTargetUser({
+        targetMessageId: "msg-user-model-command-target" as MessageId,
+        targetText: "model command thread",
+      }),
+    });
+
+    try {
+      await waitForComposerEditor();
+      await page.getByTestId("composer-editor").fill("/mod");
+
+      const menuItem = await waitForComposerMenuItem("slash:model");
+      await menuItem.click();
+
+      await vi.waitFor(() => {
+        expect(document.querySelector(".model-picker-list")).not.toBeNull();
+        expect(findComposerProviderModelPicker()?.textContent).not.toContain("/model");
+      });
+
+      await new Promise<void>((resolve) => {
+        requestAnimationFrame(() => {
+          requestAnimationFrame(() => resolve());
+        });
+      });
+
+      await vi.waitFor(() => {
+        const searchInput = document.querySelector<HTMLInputElement>(
+          'input[placeholder="Search models..."]',
+        );
+        expect(searchInput).not.toBeNull();
+        expect(document.activeElement).toBe(searchInput);
+      });
+    } finally {
+      await mounted.cleanup();
+    }
+  });
+
+  it("toggles the model picker and shows jump keys immediately from the shortcut", async () => {
+    const snapshot = createSnapshotForTargetUser({
+      targetMessageId: "msg-user-model-picker-shortcut-target" as MessageId,
+      targetText: "model picker shortcut thread",
+    });
+    const mounted = await mountChatView({
+      viewport: DEFAULT_VIEWPORT,
+      snapshot: {
+        ...snapshot,
+        projects: snapshot.projects.map((project) =>
+          project.id === PROJECT_ID
+            ? Object.assign({}, project, {
+                defaultModelSelection: { provider: "codex", model: "gpt-5.4" },
+              })
+            : project,
+        ),
+        threads: snapshot.threads.map((thread) =>
+          thread.id === THREAD_ID
+            ? Object.assign({}, thread, {
+                modelSelection: { provider: "codex", model: "gpt-5.4" },
+              })
+            : thread,
+        ),
+      },
+      configureFixture: (nextFixture) => {
+        nextFixture.serverConfig = {
+          ...nextFixture.serverConfig,
+          keybindings: [
+            {
+              command: "modelPicker.toggle",
+              shortcut: {
+                key: "m",
+                metaKey: false,
+                ctrlKey: true,
+                shiftKey: true,
+                altKey: false,
+                modKey: false,
+              },
+              whenAst: {
+                type: "not",
+                node: { type: "identifier", name: "terminalFocus" },
+              },
+            },
+            {
+              command: "thread.jump.1",
+              shortcut: {
+                key: "1",
+                metaKey: false,
+                ctrlKey: true,
+                shiftKey: false,
+                altKey: false,
+                modKey: false,
+              },
+            },
+            {
+              command: "modelPicker.jump.1",
+              shortcut: {
+                key: "1",
+                metaKey: false,
+                ctrlKey: true,
+                shiftKey: false,
+                altKey: false,
+                modKey: false,
+              },
+              whenAst: { type: "identifier", name: "modelPickerOpen" },
+            },
+          ],
+          providers: [
+            {
+              ...nextFixture.serverConfig.providers[0]!,
+              provider: "codex",
+              models: [
+                {
+                  slug: "gpt-5.1-codex-max",
+                  name: "GPT-5.1 Codex Max",
+                  isCustom: false,
+                  capabilities: {
+                    supportsFastMode: true,
+                    supportsThinkingToggle: false,
+                    reasoningEffortLevels: [],
+                    promptInjectedEffortLevels: [],
+                    contextWindowOptions: [],
+                  },
+                },
+                {
+                  slug: "gpt-5.3-codex",
+                  name: "GPT-5.3 Codex",
+                  isCustom: false,
+                  capabilities: {
+                    supportsFastMode: true,
+                    supportsThinkingToggle: false,
+                    reasoningEffortLevels: [],
+                    promptInjectedEffortLevels: [],
+                    contextWindowOptions: [],
+                  },
+                },
+                {
+                  slug: "gpt-5.4",
+                  name: "GPT-5.4",
+                  isCustom: false,
+                  capabilities: {
+                    supportsFastMode: true,
+                    supportsThinkingToggle: false,
+                    reasoningEffortLevels: [],
+                    promptInjectedEffortLevels: [],
+                    contextWindowOptions: [],
+                  },
+                },
+              ],
+            },
+          ],
+        };
+      },
+    });
+
+    try {
+      await waitForServerConfigToApply();
+      await waitForComposerEditor();
+
+      const initialPath = mounted.router.state.location.pathname;
+      window.dispatchEvent(
+        new KeyboardEvent("keydown", {
+          key: "m",
+          ctrlKey: true,
+          shiftKey: true,
+          bubbles: true,
+          cancelable: true,
+        }),
+      );
+
+      await vi.waitFor(() => {
+        expect(document.querySelector(".model-picker-list")).not.toBeNull();
+      });
+
+      const jumpLabel = isMacPlatform(navigator.platform) ? "⌃1" : "Ctrl+1";
+      await vi.waitFor(() => {
+        expect(
+          Array.from(
+            document.querySelectorAll<HTMLElement>('.model-picker-list [data-slot="kbd"]'),
+          ).some((element) => element.textContent?.trim() === jumpLabel),
+        ).toBe(true);
+      });
+      expect(mounted.router.state.location.pathname).toBe(initialPath);
+
+      window.dispatchEvent(
+        new KeyboardEvent("keydown", {
+          key: "m",
+          ctrlKey: true,
+          shiftKey: true,
+          bubbles: true,
+          cancelable: true,
+        }),
+      );
+
+      await vi.waitFor(() => {
+        expect(document.querySelector(".model-picker-list")).toBeNull();
+      });
+    } finally {
+      releaseModShortcut("Control");
+      await mounted.cleanup();
+    }
+  });
+
   it("shows a tooltip with the skill description when hovering a skill pill", async () => {
     const mounted = await mountChatView({
       viewport: DEFAULT_VIEWPORT,