feat(www): SEO & AEO audit improvements

- Add site URL to astro.config.mjs (enables canonical URLs, sitemaps, OG tags)
- Create robots.txt with sitemap reference
- Improve homepage title, description, and body copy for AEO answer-first pattern
- Add JSON-LD SoftwareSourceCode structured data to homepage
- Add Open Graph and Twitter Card meta tags to homepage
- Enhance meta descriptions on store, scope, and query pages with OG tags
- Add noindex to deprecated pages (stream, form/*)

Co-Authored-By: Oz <oz-agent@warp.dev>

Author: bholmesdev

www/astro.config.mjs

@@ -2,6 +2,7 @@ import starlight from "@astrojs/starlight";
 import { defineConfig } from "astro/config";
 
 export default defineConfig({
+	site: "https://simple-stack.dev",
 	integrations: [
 		starlight({
 			title: "Simple Stack 🌱",

www/public/robots.txt

@@ -0,0 +1,4 @@
+User-agent: *
+Allow: /
+
+Sitemap: https://simple-stack.dev/sitemap-index.xml

www/src/content/docs/form/client.md

@@ -1,8 +1,13 @@
 ---
-title:  Add client validation
+title: Add client validation
 description: Add client validation to your forms
 sidebar:
   order: 3
+head:
+  - tag: meta
+    attrs:
+      name: robots
+      content: noindex, follow
 ---
 
 :::caution

www/src/content/docs/form/index.mdx

@@ -1,9 +1,14 @@
 ---
 title: Simple form
-description: The simple way to validate forms in your fullstack app. 
+description: The simple way to validate forms in your fullstack app.
 sidebar:
   label: Get started
   order: 1
+head:
+  - tag: meta
+    attrs:
+      name: robots
+      content: noindex, follow
 ---
 
 import { Tabs, TabItem } from '@astrojs/starlight/components';

www/src/content/docs/form/parse.md

@@ -1,8 +1,13 @@
 ---
-title: Parse form requests 
+title: Parse form requests
 description: Validate forms server-side
 sidebar:
   order: 2
+head:
+  - tag: meta
+    attrs:
+      name: robots
+      content: noindex, follow
 ---
 
 :::caution

www/src/content/docs/index.mdx

@@ -1,15 +1,47 @@
 ---
-title: Simple stack 🌱
-description: A suite of tools built for Astro to simplify your workflow.
+title: Simple Stack – Lightweight Tools for Astro & Vite
+description: Simple Stack is a collection of lightweight JavaScript libraries for Astro and Vite, including a reactive store, scoped IDs, and DOM query utilities.
 tableOfContents: false
 head:
   - tag: title
-    content: Simple stack 🌱
+    content: Simple Stack – Lightweight Tools for Astro & Vite
+  - tag: meta
+    attrs:
+      property: og:title
+      content: Simple Stack – Lightweight Tools for Astro & Vite
+  - tag: meta
+    attrs:
+      property: og:description
+      content: Simple Stack is a collection of lightweight JavaScript libraries for Astro and Vite, including a reactive store, scoped IDs, and DOM query utilities.
+  - tag: meta
+    attrs:
+      property: og:type
+      content: website
+  - tag: meta
+    attrs:
+      property: og:url
+      content: https://simple-stack.dev
+  - tag: meta
+    attrs:
+      name: twitter:card
+      content: summary
+  - tag: meta
+    attrs:
+      name: twitter:title
+      content: Simple Stack – Lightweight Tools for Astro & Vite
+  - tag: meta
+    attrs:
+      name: twitter:description
+      content: Lightweight JavaScript libraries for Astro and Vite – reactive store, scoped IDs, and DOM query utilities.
+  - tag: script
+    attrs:
+      type: application/ld+json
+    content: '{"@context":"https://schema.org","@type":"SoftwareSourceCode","name":"Simple Stack","description":"A collection of lightweight JavaScript libraries for Astro and Vite, including a reactive store, scoped IDs, and DOM query utilities.","url":"https://simple-stack.dev","codeRepository":"https://github.com/bholmesdev/simple-stack","programmingLanguage":["TypeScript","JavaScript"],"author":{"@type":"Person","name":"Ben Holmes","url":"https://bholmes.dev"}}'
 ---
 
-A collection of tools I've built to **make web development simpler.**
+Simple Stack is a collection of lightweight JavaScript libraries built for Astro and Vite that solve common use cases without unnecessary complexity. Each package follows a common theme: do one thing well with minimal API surface.
 
-To be honest, there isn't a "story" connecting these packages together (I'm no TanStack). But they follow a common theme: solve a simple use case without too many features.
+Below you'll find a reactive store with selector support, a build-time scoped ID generator, and a DOM query utility for Astro components.
 
 import { CardGrid, Card, LinkCard } from '@astrojs/starlight/components';
 

www/src/content/docs/query.mdx

@@ -1,6 +1,15 @@
 ---
-title: 💰 Simple Query
-description: A simple library to query the DOM from your Astro components.
+title: 💰 Simple Query – DOM Query Utility for Astro Components
+description: "Simple Query is a lightweight DOM query library for Astro that provides scoped element selection, signal-based state management, and automatic cleanup for view transitions."
+head:
+  - tag: meta
+    attrs:
+      property: og:title
+      content: Simple Query – DOM Query Utility for Astro Components
+  - tag: meta
+    attrs:
+      property: og:description
+      content: Lightweight DOM query library for Astro with scoped selectors, signal-based state, and view transition cleanup.
 ---
 
 import { Tabs, TabItem, LinkCard } from '@astrojs/starlight/components';

www/src/content/docs/scope.mdx

@@ -1,6 +1,15 @@
 ---
-title: 🔎 Simple scope
-description: Get a scoped ID for whatever file you're in. Resolved at build-time with zero client JS.
+title: 🔎 Simple Scope – Build-Time Scoped IDs for Vite
+description: "Simple Scope is a Vite plugin that generates scoped IDs at build time with zero client JavaScript. Works with Astro, Nuxt, SvelteKit, and any Vite-based framework."
+head:
+  - tag: meta
+    attrs:
+      property: og:title
+      content: Simple Scope – Build-Time Scoped IDs for Vite
+  - tag: meta
+    attrs:
+      property: og:description
+      content: Vite plugin that generates scoped IDs at build time with zero client JS. Works with Astro, Nuxt, and SvelteKit.
 ---
 
 import { LinkCard } from '@astrojs/starlight/components';

www/src/content/docs/store.mdx

@@ -1,9 +1,18 @@
 ---
-title: 💾 Simple store
-description: A reactive store that combines the simplicity of signals with the power of "selectors" you'd find in Zustand or Redux.
+title: 💾 Simple Store – Reactive State Management for React
+description: "Simple Store is a lightweight reactive store for React that combines signal-like simplicity with Zustand-style selectors. Supports nested sub-stores, middleware, and Next.js SSR."
 sidebar:
   label: Get started
   order: 1
+head:
+  - tag: meta
+    attrs:
+      property: og:title
+      content: Simple Store – Reactive State Management for React
+  - tag: meta
+    attrs:
+      property: og:description
+      content: Lightweight reactive store for React with signal-like API, nested selectors, middleware support, and Next.js compatibility.
 ---
 
 import { LinkCard, Tabs, TabItem } from '@astrojs/starlight/components';

www/src/content/docs/stream.md

@@ -1,6 +1,11 @@
 ---
 title: Simple stream 🌊
 description: Suspend Astro components with fallback content. Like React Server Components, but Just HTML ™️
+head:
+  - tag: meta
+    attrs:
+      name: robots
+      content: noindex, follow
 ---
 
 :::caution