Fix/web 615 seo setup (#5265)

* + add header into Packet Mixing docs

* + add head changes for testing

* / updated version of metatags in theme.config

* + add env file

* / theme.config to use NEXT_PUBLIC_SITE_URL from env file

* @ Fix broken link in theme.config

* - remove favicon code

* + add desription for intro pages

* + add default book's desriptions

* Revert "+ add desription for intro pages"

This reverts commit 98c78242d4.

documentation/docs/pages/apis/introduction.mdx

@@ -1,7 +1,3 @@
----
-description: Interactive APIs generated from the OpenAPI specs of various API endpoints offered by bits of Nym infrastructure run both by Nym and community operators for both Mainnet and the Sandbox testnet.
----
-
 # Introduction
 
 This site contains interactive APIs generated from the OpenAPI specs of various API endpoints offered by bits of Nym infrastructure run both by Nym and community operators for both Mainnet and the Sandbox testnet.

documentation/docs/pages/developers/index.mdx

@@ -1,7 +1,3 @@
----
-description: Nym's developer documentation covering core concepts of integrating with the Mixnet, interacting with the Nyx blockchain, an overview of the avaliable tools, and our SDK docs.
----
-
 # Introduction
 Nym's developer documentation covering core concepts of integrating with the Mixnet, interacting with the Nyx blockchain, an overview of the avaliable tools, and our SDK docs.
 

documentation/docs/pages/network/index.md

@@ -1,7 +1,3 @@
----
-description: Nym's network documentation covering network architecture, node types, tokenomics, and cryptography.
----
-
 # Introduction
 Nym's network documentation covering network architecture, node types, tokenomics, and crypto systems.
 

documentation/docs/pages/operators/introduction.mdx

@@ -1,7 +1,3 @@
----
-description: Nym's Operators guide containing information and setup guides for the various components of Nym network and Nyx blockchain validators.
----
-
 # Introduction
 
 This is **Nym's Operators guide**, containing information and setup guides for the various components of Nym network and Nyx blockchain validators.

documentation/docs/theme.config.tsx

@@ -11,10 +11,23 @@ const config: DocsThemeConfig = {
     const url = process.env.NEXT_PUBLIC_SITE_URL
     const image = url + '/nym_logo.jpg'
 
+    // Define descriptions for different "books"
+    const bookDescriptions: Record<string, string> = {
+      '/developers': "Nym's developer documentation covering core concepts of integrating with the Mixnet, interacting with the Nyx blockchain, an overview of the avaliable tools, and our SDK docs.",
+      '/network': "Nym's network documentation covering network architecture, node types, tokenomics, and cryptography.",
+      '/operators': "Nym's Operators guide containing information and setup guides for the various components of Nym network and Nyx blockchain validators.",
+      '/apis': "Interactive APIs generated from the OpenAPI specs of various API endpoints offered by bits of Nym infrastructure run both by Nym and community operators for both Mainnet and the Sandbox testnet."
+    }
+
+    const defaultDescription = 'Nym is a privacy platform. It provides strong network-level privacy against sophisticated end-to-end attackers, and anonymous access control using blinded, re-randomizable, decentralized credentials.'
+
+    const topLevel = '/' + route.split('/')[1]
     const description =
       config.frontMatter.description ||
-      'Nym is a privacy platform. It provides strong network-level privacy against sophisticated end-to-end attackers, and anonymous access control using blinded, re-randomizable, decentralized credentials.'
-    const title = config.title + (route === '/' ? '' : ' - Nym docs')
+      bookDescriptions[topLevel] ||
+      defaultDescription
+
+      const title = config.title + (route === '/' ? '' : ' - Nym docs')
 
     return (
       <>