Add project files:

- Add database initialization scripts
- Add configuration files
- Add documentation
- Add public assets
- Add source code structure
- Update README

src/lib/db/supabase.ts

@@ -0,0 +1,74 @@
+import { createClient } from '@supabase/supabase-js';
+import { BusinessData } from '../searxng';
+import { env } from '../../config/env';
+
+// Create the Supabase client with validated environment variables
+export const supabase = createClient(
+  env.supabase.url,
+  env.supabase.anonKey,
+  {
+    auth: {
+      persistSession: false // Since this is a server environment
+    }
+  }
+);
+
+// Define the cache record type
+export interface CacheRecord {
+  id: string;
+  query: string;
+  results: BusinessData[];
+  location: string;
+  category: string;
+  created_at: string;
+  updated_at: string;
+  expires_at: string;
+}
+
+// Export database helper functions
+export async function getCacheEntry(
+  category: string,
+  location: string
+): Promise<CacheRecord | null> {
+  const { data, error } = await supabase
+    .from('search_cache')
+    .select('*')
+    .eq('category', category.toLowerCase())
+    .eq('location', location.toLowerCase())
+    .gt('expires_at', new Date().toISOString())
+    .order('created_at', { ascending: false })
+    .limit(1)
+    .single();
+
+  if (error) {
+    console.error('Cache lookup failed:', error);
+    return null;
+  }
+
+  return data;
+}
+
+export async function saveCacheEntry(
+  category: string,
+  location: string,
+  results: BusinessData[],
+  expiresInDays: number = 7
+): Promise<void> {
+  const expiresAt = new Date();
+  expiresAt.setDate(expiresAt.getDate() + expiresInDays);
+
+  const { error } = await supabase
+    .from('search_cache')
+    .insert({
+      query: `${category} in ${location}`,
+      category: category.toLowerCase(),
+      location: location.toLowerCase(),
+      results,
+      expires_at: expiresAt.toISOString()
+    });
+
+  if (error) {
+    console.error('Failed to save cache entry:', error);
+    throw error;
+  }
+}