feat: export all core primitives from main entry point

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: tomaspozo

src/index.ts

@@ -1,5 +1,11 @@
 export { withSupabase } from './wrappers/with-supabase.js'
 export { createSupabaseContext } from './core/create-supabase-context.js'
+export { resolveEnv } from './core/resolve-env.js'
+export { extractCredentials } from './core/extract-credentials.js'
+export { verifyCredentials } from './core/verify-credentials.js'
+export { verifyAuth } from './core/verify-auth.js'
+export { createContextClient } from './core/create-context-client.js'
+export { createAdminClient } from './core/create-admin-client.js'
 export { buildCorsHeaders, addCorsHeaders } from './cors.js'
 export type {
   Allow,