added openrouter ai generated tasks

lib/ai-daily-tasks.ts

@@ -0,0 +1,39 @@
+export type EnsureAiDailyTasksResult = {
+  generated: boolean;
+  source?: "openrouter" | "fallback" | "cache";
+  tasks?: string[];
+  error?: string;
+};
+
+let inflightGeneration: Promise<EnsureAiDailyTasksResult> | null = null;
+
+async function requestAiDailyTasks(): Promise<EnsureAiDailyTasksResult> {
+  const response = await fetch("/api/generate-daily-tasks", {
+    method: "POST",
+  });
+
+  const payload = (await response.json()) as EnsureAiDailyTasksResult & {
+    error?: string;
+  };
+
+  if (!response.ok) {
+    return {
+      generated: false,
+      error: payload.error ?? "Could not generate daily tasks.",
+    };
+  }
+
+  return payload;
+}
+
+export async function ensureAiDailyTasks(): Promise<EnsureAiDailyTasksResult> {
+  if (inflightGeneration) {
+    return inflightGeneration;
+  }
+
+  inflightGeneration = requestAiDailyTasks().finally(() => {
+    inflightGeneration = null;
+  });
+
+  return inflightGeneration;
+}