Make the command center stable and workspace-aware (#2749)

* feat(app): expand command center actions

Keep command center navigation stable by revealing only clipped rows without smooth centering. Prioritize a concise default list while making workspace, Git, pane, and creation actions searchable through the existing contribution and action-policy paths.

* test(app): search for query-only command action

Add project is intentionally absent from the unfiltered command center. Exercise the overlay flow through search before selecting it.

packages/app/e2e/command-center-workspace-actions.spec.ts

@@ -0,0 +1,34 @@
+import { test } from "./fixtures";
+import { gotoAppShell } from "./helpers/app";
+import { openCommandCenter } from "./helpers/command-center";
+import {
+  createTerminalFromCommandCenter,
+  expectDefaultWorkspaceActions,
+  expectWorkspaceActionsAvailableThroughSearch,
+  makeWorkspacePrimaryGitActionCommit,
+  openWorkspaceFromCommandCenter,
+} from "./helpers/command-center-workspace-actions";
+import { seedWorkspace } from "./helpers/seed-client";
+
+test("workspace actions use the Git policy and dispatch through the active workspace", async ({
+  page,
+}) => {
+  const title = "Command Center Workspace Actions";
+  const seeded = await seedWorkspace({
+    repoPrefix: "command-center-workspace-actions-",
+    title,
+  });
+
+  try {
+    await makeWorkspacePrimaryGitActionCommit(seeded);
+    await gotoAppShell(page);
+    await openWorkspaceFromCommandCenter(page, seeded, title);
+
+    const panel = await openCommandCenter(page);
+    await expectDefaultWorkspaceActions(panel);
+    await expectWorkspaceActionsAvailableThroughSearch(panel);
+    await createTerminalFromCommandCenter(page, panel);
+  } finally {
+    await seeded.cleanup();
+  }
+});