fix(db): make filesystem lock intent explicit

tests/unit/task-input-schema.test.ts

@@ -0,0 +1,23 @@
+import { describe, expect, it } from "vitest";
+
+import { taskInputSchema } from "../../src/shared/contracts";
+
+describe("taskInputSchema", () => {
+  const baseTask = {
+    companyId: "00000000-0000-4000-8000-000000000001",
+    title: "Prepare launch review",
+  };
+
+  it("normalizes omitted requiresFilesystem to false", () => {
+    const parsed = taskInputSchema.parse(baseTask);
+    expect(parsed.requiresFilesystem).toBe(false);
+  });
+
+  it("preserves explicit requiresFilesystem intent", () => {
+    const parsed = taskInputSchema.parse({
+      ...baseTask,
+      requiresFilesystem: true,
+    });
+    expect(parsed.requiresFilesystem).toBe(true);
+  });
+});