fixed nav, added sanity and guides pages

lib/sanity.ts

@@ -0,0 +1,57 @@
+import { createClient } from 'next-sanity'
+import imageUrlBuilder from '@sanity/image-url'
+import type { SanityImageSource } from '@sanity/image-url/lib/types/types'
+
+export const projectId = 'zal102rv'
+export const dataset = 'production'
+export const apiVersion = '2024-01-01'
+
+export const client = createClient({
+  projectId,
+  dataset,
+  apiVersion,
+  useCdn: false, // false = direct API; avoids CDN DNS issues in dev/server
+})
+
+const builder = imageUrlBuilder(client)
+
+export function urlFor(source: SanityImageSource) {
+  return builder.image(source)
+}
+
+// ─── GROQ Queries ────────────────────────────────────────────────────────────
+
+/** All published posts for the listing page, newest first */
+export const postsQuery = `
+  *[_type == "post" && defined(slug.current) && publishedAt <= now()]
+  | order(publishedAt desc) {
+    _id,
+    title,
+    slug,
+    publishedAt,
+    excerpt,
+    mainImage { ..., alt },
+    "author": author->{ name, image }
+  }
+`
+
+/** Single post by slug for the detail page */
+export const postBySlugQuery = `
+  *[_type == "post" && slug.current == $slug][0] {
+    _id,
+    title,
+    slug,
+    publishedAt,
+    excerpt,
+    mainImage { ..., alt },
+    body,
+    seoTitle,
+    seoDescription,
+    "author": author->{ name, image, bio }
+  }
+`
+
+/** All slugs — used for generateStaticParams */
+export const postSlugsQuery = `
+  *[_type == "post" && defined(slug.current)] { "slug": slug.current }
+`