feat(seo): optimize page titles and meta descriptions

frontend/src/app/(auth)/forgot-password/page.tsx

@@ -1,7 +1,16 @@
 import { Suspense } from 'react';
+import type { Metadata } from 'next';
 import Loader from '~/components/loader';
 import { ForgotPasswordForm } from './form';
 
+export const metadata: Metadata = {
+  title: 'Reset Password',
+  description:
+    'Reset your Retailytics password to regain access to your retail intelligence dashboards and store data.',
+  alternates: { canonical: '/forgot-password' },
+  robots: { index: false, follow: true },
+};
+
 export default async function ForgotPasswordPage() {
   return (
     <div className="bg-background flex h-full w-full min-h-screen items-center justify-center p-4">

frontend/src/app/(auth)/login/page.tsx

@@ -1,9 +1,18 @@
 import { auth } from '../auth';
 import { LoginForm } from './form';
+import type { Metadata } from 'next';
 import { cache, Suspense } from 'react';
 import Loader from '~/components/loader';
 import { redirect } from 'next/navigation';
 
+export const metadata: Metadata = {
+  title: 'Sign In',
+  description:
+    'Sign in to your Retailytics account to access store enumeration dashboards, field data, and market intelligence reports.',
+  alternates: { canonical: '/login' },
+  robots: { index: false, follow: true },
+};
+
 const getSession = cache(() => auth());
 
 export default async function LoginPage() {

frontend/src/app/(auth)/register/page.tsx

@@ -1,10 +1,19 @@
 import { auth } from '../auth';
 import { decodeJwt } from 'jose';
+import type { Metadata } from 'next';
 import { RegisterForm } from './form';
 import { cache, Suspense } from 'react';
 import Loader from '~/components/loader';
 import { redirect } from 'next/navigation';
 
+export const metadata: Metadata = {
+  title: 'Create Account',
+  description:
+    'Create your Retailytics account to start collecting store data, validating field submissions, and turning local data into market intelligence.',
+  alternates: { canonical: '/register' },
+  robots: { index: false, follow: true },
+};
+
 const getSession = cache(() => auth());
 
 function validateInviteToken(inviteToken: string): {

frontend/src/app/layout.tsx

@@ -4,6 +4,7 @@ import type { Metadata } from 'next';
 import { Suspense } from 'react';
 import Loader from '~/components/loader';
 import { Outfit } from 'next/font/google';
+import { siteConfig } from '~/lib/site';
 import { Toaster } from '~/components/ui/sonner';
 import { Analytics } from '@vercel/analytics/next';
 
@@ -13,8 +14,20 @@ const outfit = Outfit({
 });
 
 export const metadata: Metadata = {
-  title: 'Retailytics',
-  description: 'Retailytics aka Retail Intelligence',
+  metadataBase: new URL(siteConfig.url),
+  title: {
+    default: `${siteConfig.name} — ${siteConfig.tagline}`,
+    template: `%s · ${siteConfig.name}`,
+  },
+  description: siteConfig.description,
+  applicationName: siteConfig.name,
+  keywords: [...siteConfig.keywords],
+  authors: [{ name: siteConfig.legalName, url: siteConfig.social.parent }],
+  creator: siteConfig.legalName,
+  publisher: siteConfig.legalName,
+  alternates: {
+    canonical: '/',
+  },
 };
 
 export default function RootLayout({

frontend/src/app/page.tsx

@@ -1,9 +1,17 @@
 import CTA from '~/components/cta';
 import FAQ from '~/components/faq';
 import Hero from '~/components/hero';
+import type { Metadata } from 'next';
+import { siteConfig } from '~/lib/site';
 import Footer from '~/components/footer';
 import HowItWorks from '~/components/how-it-works';
 
+export const metadata: Metadata = {
+  title: { absolute: `${siteConfig.name} — ${siteConfig.tagline}` },
+  description: siteConfig.description,
+  alternates: { canonical: '/' },
+};
+
 export default function Home() {
   return (
     <main className="w-full h-full flex flex-col">

frontend/src/env.ts

@@ -13,10 +13,12 @@ export const env = createEnv({
   },
   client: {
     NEXT_PUBLIC_MIXPANEL_TOKEN: z.string(),
+    NEXT_PUBLIC_SITE_URL: z.url().default('https://retailytics.ajared.ng'),
   },
   emptyStringAsUndefined: true,
   experimental__runtimeEnv: {
     NEXT_PUBLIC_MIXPANEL_TOKEN: process.env.NEXT_PUBLIC_MIXPANEL_TOKEN,
+    NEXT_PUBLIC_SITE_URL: process.env.NEXT_PUBLIC_SITE_URL,
   },
   skipValidation: !!process.env.SKIP_ENV_VALIDATION,
 });

frontend/src/lib/site.ts

@@ -0,0 +1,52 @@
+import { env } from '~/env';
+
+/**
+ * Central, single-source-of-truth metadata for the Retailytics marketing
+ * surface. Reused by page metadata, Open Graph/Twitter cards, robots.txt,
+ * sitemap.xml, JSON-LD structured data and the llms.txt manifest so the
+ * product is described consistently everywhere search engines and AI agents
+ * look.
+ */
+export const siteConfig = {
+  name: 'Retailytics',
+  /** Parent organisation that builds and operates Retailytics. */
+  legalName: 'Ajared Research Inc.',
+  /** Canonical, absolute production URL (no trailing slash). */
+  url: env.NEXT_PUBLIC_SITE_URL.replace(/\/$/, ''),
+  tagline: 'Turn Local Data into Market Intelligence',
+  description:
+    'Retailytics turns local store data into market intelligence — enumeration, field data collection, and analysis in one platform. Start free today.',
+  /** Monitored contact address used on public pages and structured data. */
+  contactEmail: 'innovation@ajared.ca',
+  /** Default social/OG share image (1200×630), served from /public. */
+  ogImage: '/og.png',
+  locale: 'en_US',
+  twitter: {
+    handle: '@ajaREDiA',
+  },
+  /** Profiles used for the Organization `sameAs` graph. */
+  social: {
+    twitter: 'https://twitter.com/ajaREDiA',
+    github: 'https://github.com/ajared',
+    parent: 'https://www.ajared.ng',
+    parentCa: 'https://www.ajared.ca',
+  },
+  /** Keyword targets shared across pages. */
+  keywords: [
+    'retail intelligence',
+    'store enumeration',
+    'field data collection',
+    'market intelligence',
+    'retail analytics',
+    'location intelligence',
+    'market research',
+    'store data platform',
+  ],
+} as const;
+
+export type SiteConfig = typeof siteConfig;
+
+/** Build an absolute URL from a site-relative path. */
+export function absoluteUrl(path = '/'): string {
+  return `${siteConfig.url}${path.startsWith('/') ? path : `/${path}`}`;
+}