feat: add per-provider timeout for usage panel to prevent blocking on slow responses

fix: update scheduler filesystem path from .kb to .fusion for task validation

style: clean up TaskDetailModal styling with reusable CSS classes

test: add comprehensive tests for file-service operations with mocked filesystem

packages/dashboard/src/__tests__/debug12.test.ts

@@ -0,0 +1,81 @@
+import { describe, it, expect, vi, beforeEach } from "vitest";
+import type { TaskStore } from "@fusion/core";
+import { dirname, resolve } from "path";
+
+// Create mock functions that can be configured in tests
+const mocks = vi.hoisted(() => ({
+  mockReaddir: vi.fn(),
+  mockReadFile: vi.fn(),
+  mockWriteFile: vi.fn(),
+  mockStat: vi.fn(),
+  mockExistsSync: vi.fn(),
+}));
+
+// Hoist mocks alongside vi.mock
+vi.mock("node:fs/promises", async () => {
+  const actual = await import("node:fs/promises");
+  return {
+    default: {
+      readdir: mocks.mockReaddir,
+      readFile: mocks.mockReadFile,
+      writeFile: mocks.mockWriteFile,
+      stat: mocks.mockStat,
+    },
+    readdir: mocks.mockReaddir,
+    readFile: mocks.mockReadFile,
+    writeFile: mocks.mockWriteFile,
+    stat: mocks.mockStat,
+  };
+});
+
+vi.mock("node:fs", async () => {
+  const actual = await import("node:fs");
+  return {
+    default: {
+      existsSync: mocks.mockExistsSync,
+    },
+    existsSync: mocks.mockExistsSync,
+  };
+});
+
+// Import AFTER mocks are set up
+import { writeProjectFile } from "../file-service";
+
+describe("debug", () => {
+  beforeEach(() => {
+    mocks.mockStat.mockReset();
+  });
+
+  it("test", async () => {
+    const mockGetRootDir = vi.fn();
+    const mockStore = {
+      getRootDir: mockGetRootDir,
+    } as unknown as TaskStore;
+    
+    mockGetRootDir.mockReturnValue("/test/project");
+    
+    let callCount = 0;
+    mocks.mockStat.mockImplementation(async (path: string) => {
+      callCount++;
+      console.log(`stat call #${callCount}:`, path);
+      
+      // Return a simple object
+      const result = {
+        isDirectory: () => path.includes("/file.txt"),
+        isFile: () => !path.includes("/file.txt"),
+      };
+      
+      console.log(`stat #${callCount} returning:`, result);
+      console.log(`stat #${callCount} isDirectory():`, result.isDirectory());
+      
+      return result;
+    });
+    
+    try {
+      await writeProjectFile(mockStore, "file.txt/sub.txt", "content");
+      console.log("Success!");
+    } catch (e: any) {
+      console.log("Error:", e.message);
+    }
+  });
+});