Add Next.js frontend PWA

- Pages: login, register, tasks list, task detail
- Components: TaskCard, TaskForm, GroupSelector, StatusBadge, Header
- Tailwind CSS, dark/light mode, PWA manifest
- Running on :3001 via systemd

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/tasks/lib/api.ts

@@ -0,0 +1,145 @@
+const API_BASE = process.env.NEXT_PUBLIC_API_URL || "http://localhost:3000";
+
+interface ApiOptions {
+  method?: string;
+  body?: unknown;
+  token?: string;
+}
+
+async function apiFetch<T>(path: string, opts: ApiOptions = {}): Promise<T> {
+  const headers: Record<string, string> = {
+    "Content-Type": "application/json",
+  };
+  if (opts.token) {
+    headers["Authorization"] = `Bearer ${opts.token}`;
+  }
+
+  const res = await fetch(`${API_BASE}${path}`, {
+    method: opts.method || "GET",
+    headers,
+    body: opts.body ? JSON.stringify(opts.body) : undefined,
+  });
+
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({ message: res.statusText }));
+    throw new Error(err.message || `HTTP ${res.status}`);
+  }
+
+  return res.json();
+}
+
+// Auth
+export function register(data: { email: string; name: string; phone?: string }) {
+  return apiFetch<{ token: string; user: User }>("/api/v1/auth/register", {
+    method: "POST",
+    body: data,
+  });
+}
+
+export function login(data: { email: string; password?: string }) {
+  return apiFetch<{ token: string; user: User }>("/api/v1/auth/login", {
+    method: "POST",
+    body: data,
+  });
+}
+
+export function getMe(token: string) {
+  return apiFetch<{ user: User }>("/api/v1/auth/me", { token });
+}
+
+// Tasks
+export function getTasks(token: string, params?: Record<string, string>) {
+  const qs = params ? "?" + new URLSearchParams(params).toString() : "";
+  return apiFetch<{ data: Task[]; total: number }>(`/api/v1/tasks${qs}`, { token });
+}
+
+export function getTask(token: string, id: string) {
+  return apiFetch<Task>(`/api/v1/tasks/${id}`, { token });
+}
+
+export function createTask(token: string, data: Partial<Task>) {
+  return apiFetch<Task>("/api/v1/tasks", { method: "POST", body: data, token });
+}
+
+export function updateTask(token: string, id: string, data: Partial<Task>) {
+  return apiFetch<Task>(`/api/v1/tasks/${id}`, { method: "PUT", body: data, token });
+}
+
+export function deleteTask(token: string, id: string) {
+  return apiFetch<void>(`/api/v1/tasks/${id}`, { method: "DELETE", token });
+}
+
+// Groups
+export function getGroups(token: string) {
+  return apiFetch<{ data: Group[] }>("/api/v1/groups", { token });
+}
+
+export function createGroup(token: string, data: Partial<Group>) {
+  return apiFetch<Group>("/api/v1/groups", { method: "POST", body: data, token });
+}
+
+export function updateGroup(token: string, id: string, data: Partial<Group>) {
+  return apiFetch<Group>(`/api/v1/groups/${id}`, { method: "PUT", body: data, token });
+}
+
+export function deleteGroup(token: string, id: string) {
+  return apiFetch<void>(`/api/v1/groups/${id}`, { method: "DELETE", token });
+}
+
+export function reorderGroups(token: string, ids: string[]) {
+  return apiFetch<void>("/api/v1/groups/reorder", { method: "PUT", body: { ids }, token });
+}
+
+// Connectors
+export function getConnectors(token: string) {
+  return apiFetch<{ data: Connector[] }>("/api/v1/connectors", { token });
+}
+
+export function createConnector(token: string, data: Partial<Connector>) {
+  return apiFetch<Connector>("/api/v1/connectors", { method: "POST", body: data, token });
+}
+
+// Types
+export interface User {
+  id: string;
+  email: string;
+  name: string;
+  phone?: string;
+}
+
+export interface Task {
+  id: string;
+  user_id: string | null;
+  group_id: string | null;
+  title: string;
+  description: string;
+  status: "pending" | "in_progress" | "done" | "cancelled";
+  priority: "low" | "medium" | "high" | "urgent";
+  scheduled_at: string | null;
+  due_at: string | null;
+  completed_at: string | null;
+  assigned_to: string[];
+  attachments: string[];
+  external_id: string | null;
+  external_source: string | null;
+  created_at: string;
+  updated_at: string;
+  group_name: string | null;
+  group_color: string | null;
+  group_icon: string | null;
+}
+
+export interface Group {
+  id: string;
+  name: string;
+  color: string;
+  icon: string | null;
+  sort_order: number;
+}
+
+export interface Connector {
+  id: string;
+  name: string;
+  type: string;
+  config: Record<string, unknown>;
+}