Fix supabase-js Deno compatibility by pinning to v2.45.0

The latest supabase-js@2.92.0 has a Deno compatibility bug with
createRequire that causes all edge functions to fail with:
"The argument 'filename' must be a file URL object..."

Pin all edge functions to @2.45.0 with ?target=deno parameter
to ensure Deno-compatible builds from esm.sh.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/supabase/functions/redeem-code/index.ts

@@ -1,5 +1,5 @@
 import "jsr:@supabase/functions-js/edge-runtime.d.ts";
-import { createClient } from "https://esm.sh/@supabase/supabase-js@2";
+import { createClient } from "https://esm.sh/@supabase/supabase-js@2.45.0?target=deno";
 
 const corsHeaders = {
     "Access-Control-Allow-Origin": "*",