feat(FN-3514): document task evaluation settings in settings reference

Documents task evaluation settings by adding 6 lines to the settings reference guide.

Fusion-Task-Id: FN-3514

packages/core/src/__tests__/eval-automation.test.ts

@@ -26,7 +26,26 @@ describe("eval-automation", () => {
     const resolved = resolveTaskEvaluationSettings({});
     expect(resolved.taskEvaluationEnabled).toBe(false);
     expect(resolved.taskEvaluationSchedule).toBe(DEFAULT_TASK_EVALUATION_SCHEDULE);
+    expect(resolved.taskEvaluationProvider).toBeUndefined();
+    expect(resolved.taskEvaluationModelId).toBeUndefined();
     expect(resolved.taskEvaluationFollowUpPolicy).toBe("off");
+    expect(resolved.taskEvaluationRetention).toBeUndefined();
+  });
+
+  it("resolves task evaluation provider/model/retention overrides", () => {
+    const resolved = resolveTaskEvaluationSettings({
+      taskEvaluationEnabled: true,
+      taskEvaluationProvider: "anthropic",
+      taskEvaluationModelId: "claude-sonnet-4-5",
+      taskEvaluationFollowUpPolicy: "create",
+      taskEvaluationRetention: 30,
+    });
+
+    expect(resolved.taskEvaluationEnabled).toBe(true);
+    expect(resolved.taskEvaluationProvider).toBe("anthropic");
+    expect(resolved.taskEvaluationModelId).toBe("claude-sonnet-4-5");
+    expect(resolved.taskEvaluationFollowUpPolicy).toBe("create");
+    expect(resolved.taskEvaluationRetention).toBe(30);
   });
 
   it("creates scheduled eval automation", () => {

packages/core/src/__tests__/settings-parity.test.ts

@@ -121,6 +121,26 @@ describe("research global key parity regression (FN-3313)", () => {
 
 // ── Model Lane Key Parity Regression Tests (FN-1729) ────────────────────────
 
+describe("task evaluation key parity regression (FN-3514)", () => {
+  const taskEvaluationDefaults = {
+    taskEvaluationEnabled: false,
+    taskEvaluationSchedule: "0 5 * * *",
+    taskEvaluationProvider: undefined,
+    taskEvaluationModelId: undefined,
+    taskEvaluationFollowUpPolicy: "off",
+    taskEvaluationRetention: undefined,
+  } as const;
+
+  it.each(Object.entries(taskEvaluationDefaults))(
+    "%s is project-scoped with expected default",
+    (key, expectedDefault) => {
+      expect(isProjectSettingsKey(key)).toBe(true);
+      expect(isGlobalSettingsKey(key)).toBe(false);
+      expect((DEFAULT_PROJECT_SETTINGS as Record<string, unknown>)[key]).toBe(expectedDefault);
+    },
+  );
+});
+
 describe("model lane key parity regression (FN-1729)", () => {
   // All model lane provider/modelId pairs that should exist
   const allModelLanePairs = [