fixed nav, added sanity and guides pages

lib/sanityFetch.ts

@@ -0,0 +1,45 @@
+import https from 'https'
+import { projectId, dataset, apiVersion } from './sanity'
+
+const SANITY_IP   = '34.102.242.91'
+const SANITY_HOST = `${projectId}.api.sanity.io`
+
+export function sanityFetch<T = unknown>(
+  query: string,
+  params?: Record<string, unknown>
+): Promise<T> {
+  let path = `/v${apiVersion}/data/query/${dataset}?query=${encodeURIComponent(query)}`
+  if (params) {
+    for (const [key, value] of Object.entries(params)) {
+      path += `&$${key}=${encodeURIComponent(JSON.stringify(value))}`
+    }
+  }
+  return new Promise((resolve, reject) => {
+    const req = https.request(
+      {
+        method: 'GET',
+        hostname: SANITY_IP,
+        port: 443,
+        path,
+        servername: SANITY_HOST,
+        headers: { Host: SANITY_HOST, Accept: 'application/json', 'User-Agent': 'battl-builders/1.0' },
+      },
+      (res) => {
+        let data = ''
+        res.on('data', (c) => (data += c))
+        res.on('end', () => {
+          try {
+            const parsed = JSON.parse(data)
+            res.statusCode && res.statusCode >= 400
+              ? reject(new Error(`Sanity ${res.statusCode}: ${JSON.stringify(parsed)}`))
+              : resolve(parsed.result as T)
+          } catch {
+            reject(new Error(`Sanity parse error: ${data.slice(0, 200)}`))
+          }
+        })
+      }
+    )
+    req.on('error', reject)
+    req.end()
+  })
+}