feat(command-center): autofill empty cells with recent active tasks

apps/code/src/renderer/features/command-center/components/CommandCenterView.tsx

@@ -3,6 +3,7 @@ import { useSetHeaderContent } from "@hooks/useSetHeaderContent";
 import { Lightning } from "@phosphor-icons/react";
 import { Box, Flex, Text } from "@radix-ui/themes";
 import { useEffect, useMemo } from "react";
+import { useAutofillCommandCenter } from "../hooks/useAutofillCommandCenter";
 import { useCommandCenterData } from "../hooks/useCommandCenterData";
 import { useCommandCenterStore } from "../stores/commandCenterStore";
 import { CommandCenterGrid } from "./CommandCenterGrid";
@@ -13,6 +14,8 @@ export function CommandCenterView() {
   const { cells, summary } = useCommandCenterData();
   const { markAsViewed } = useTaskViewed();
 
+  useAutofillCommandCenter();
+
   const visibleTaskIdsKey = cells
     .map((c) => c.taskId)
     .filter(Boolean)

apps/code/src/renderer/features/command-center/hooks/useAutofillCommandCenter.ts

@@ -0,0 +1,61 @@
+import { useArchivedTaskIds } from "@features/archive/hooks/useArchivedTaskIds";
+import { useTasks } from "@features/tasks/hooks/useTasks";
+import { useWorkspaces } from "@features/workspace/hooks/useWorkspace";
+import type { Task } from "@shared/types";
+import { useEffect, useRef } from "react";
+import { useCommandCenterStore } from "../stores/commandCenterStore";
+
+const RECENT_WINDOW_MS = 2 * 60 * 60 * 1000;
+
+function getLastActivity(task: Task): number {
+  const taskTime = new Date(task.updated_at).getTime();
+  const runTime = task.latest_run?.updated_at
+    ? new Date(task.latest_run.updated_at).getTime()
+    : 0;
+  return Math.max(taskTime, runTime);
+}
+
+export function useAutofillCommandCenter(): void {
+  const { data: tasks = [] } = useTasks();
+  const { data: workspaces, isFetched: workspacesFetched } = useWorkspaces();
+  const archivedTaskIds = useArchivedTaskIds();
+
+  const cells = useCommandCenterStore((s) => s.cells);
+  const autofillCells = useCommandCenterStore((s) => s.autofillCells);
+
+  const hasRunRef = useRef(false);
+
+  useEffect(() => {
+    if (hasRunRef.current) return;
+    if (!workspacesFetched || !workspaces) return;
+
+    if (!cells.every((id) => id == null)) {
+      hasRunRef.current = true;
+      return;
+    }
+
+    const cutoff = Date.now() - RECENT_WINDOW_MS;
+    const candidates = tasks
+      .filter(
+        (task) =>
+          !archivedTaskIds.has(task.id) &&
+          !!workspaces[task.id] &&
+          getLastActivity(task) >= cutoff,
+      )
+      .sort((a, b) => getLastActivity(b) - getLastActivity(a))
+      .slice(0, cells.length)
+      .map((task) => task.id);
+
+    if (candidates.length > 0) {
+      autofillCells(candidates);
+    }
+    hasRunRef.current = true;
+  }, [
+    cells,
+    workspaces,
+    workspacesFetched,
+    tasks,
+    archivedTaskIds,
+    autofillCells,
+  ]);
+}

apps/code/src/renderer/features/command-center/stores/commandCenterStore.test.ts

@@ -0,0 +1,74 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+vi.mock("@utils/electronStorage", () => ({
+  electronStorage: {
+    getItem: () => null,
+    setItem: () => {},
+    removeItem: () => {},
+  },
+}));
+
+import { useCommandCenterStore } from "./commandCenterStore";
+
+describe("commandCenterStore", () => {
+  beforeEach(() => {
+    useCommandCenterStore.setState({
+      layout: "2x2",
+      cells: [null, null, null, null],
+      activeTaskId: null,
+      activeCellIndex: null,
+      zoom: 1,
+      creatingCells: [],
+    });
+  });
+
+  describe("autofillCells", () => {
+    it("fills empty cells from index 0", () => {
+      useCommandCenterStore.getState().autofillCells(["t1", "t2"]);
+      expect(useCommandCenterStore.getState().cells).toEqual([
+        "t1",
+        "t2",
+        null,
+        null,
+      ]);
+    });
+
+    it("does nothing when any cell is already populated", () => {
+      useCommandCenterStore.setState({ cells: [null, "existing", null, null] });
+      useCommandCenterStore.getState().autofillCells(["t1", "t2"]);
+      expect(useCommandCenterStore.getState().cells).toEqual([
+        null,
+        "existing",
+        null,
+        null,
+      ]);
+    });
+
+    it("ignores empty task list", () => {
+      useCommandCenterStore.getState().autofillCells([]);
+      expect(useCommandCenterStore.getState().cells).toEqual([
+        null,
+        null,
+        null,
+        null,
+      ]);
+    });
+
+    it("caps fill at the number of cells", () => {
+      useCommandCenterStore
+        .getState()
+        .autofillCells(["t1", "t2", "t3", "t4", "t5", "t6"]);
+      expect(useCommandCenterStore.getState().cells).toEqual([
+        "t1",
+        "t2",
+        "t3",
+        "t4",
+      ]);
+    });
+
+    it("does not set activeTaskId", () => {
+      useCommandCenterStore.getState().autofillCells(["t1"]);
+      expect(useCommandCenterStore.getState().activeTaskId).toBeNull();
+    });
+  });
+});

apps/code/src/renderer/features/command-center/stores/commandCenterStore.ts

@@ -33,6 +33,7 @@ interface CommandCenterStoreActions {
   setActiveTask: (taskId: string | null) => void;
   setActiveCell: (cellIndex: number | null) => void;
   assignTask: (cellIndex: number, taskId: string) => void;
+  autofillCells: (taskIds: string[]) => void;
   removeTask: (cellIndex: number) => void;
   removeTaskById: (taskId: string) => void;
   clearAll: () => void;
@@ -115,6 +116,18 @@ export const useCommandCenterStore = create<CommandCenterStore>()(
           };
         }),
 
+      autofillCells: (taskIds) =>
+        set((state) => {
+          if (!state.cells.every((id) => id == null)) return state;
+          if (taskIds.length === 0) return state;
+          const cells: (string | null)[] = [...state.cells];
+          const limit = Math.min(cells.length, taskIds.length);
+          for (let i = 0; i < limit; i++) {
+            cells[i] = taskIds[i];
+          }
+          return { cells };
+        }),
+
       removeTask: (cellIndex) =>
         set((state) => {
           const cells = [...state.cells];