feat: complete MVP foundation auth and dashboard

lib/mock-auth.ts

@@ -0,0 +1,47 @@
+export const MOCK_SESSION_COOKIE_NAME = "webdev_pipeline_mock_session";
+export const MOCK_SESSION_COOKIE_VALUE = "mock-admin";
+
+export type MockCookieStore = {
+  get: (name: string) => { name: string; value: string } | undefined;
+};
+
+export type MockSession = {
+  name: string;
+  email: string;
+};
+
+export const MOCK_ADMIN_SESSION: MockSession = {
+  name: "Matthias Meister",
+  email: "matthias@webdev-pipeline.local",
+};
+
+export function hasMockSession(cookieStore: MockCookieStore) {
+  return (
+    cookieStore.get(MOCK_SESSION_COOKIE_NAME)?.value === MOCK_SESSION_COOKIE_VALUE
+  );
+}
+
+export function getMockSession(cookieStore: MockCookieStore) {
+  return hasMockSession(cookieStore) ? MOCK_ADMIN_SESSION : null;
+}
+
+export function createMockSessionCookie() {
+  return {
+    name: MOCK_SESSION_COOKIE_NAME,
+    value: MOCK_SESSION_COOKIE_VALUE,
+    httpOnly: true,
+    sameSite: "lax" as const,
+    secure: true,
+    path: "/",
+    maxAge: 60 * 60 * 24 * 7,
+  };
+}
+
+export function createClearedMockSessionCookie() {
+  return {
+    name: MOCK_SESSION_COOKIE_NAME,
+    value: "",
+    path: "/",
+    maxAge: 0,
+  };
+}