Merge branch 'main' into main

app/lib/.server/llm/api-key.ts

@@ -2,12 +2,18 @@
 // Preventing TS checks with files presented in the video for a better presentation.
 import { env } from 'node:process';
 
-export function getAPIKey(cloudflareEnv: Env, provider: string) {
+export function getAPIKey(cloudflareEnv: Env, provider: string, userApiKeys?: Record<string, string>) {
   /**
    * The `cloudflareEnv` is only used when deployed or when previewing locally.
    * In development the environment variables are available through `env`.
    */
 
+  // First check user-provided API keys
+  if (userApiKeys?.[provider]) {
+    return userApiKeys[provider];
+  }
+
+  // Fall back to environment variables
   switch (provider) {
     case 'Anthropic':
       return env.ANTHROPIC_API_KEY || cloudflareEnv.ANTHROPIC_API_KEY;