fix: disable unconfigured ai services

src/backend/src/modules/puterai/PuterAIModule.js

@@ -1,4 +1,5 @@
 const { AdvancedBase } = require("@heyputer/puter-js-common");
+const config = require("../../config");
 
 class PuterAIModule extends AdvancedBase {
     async install (context) {
@@ -7,17 +8,26 @@ class PuterAIModule extends AdvancedBase {
         const { AIInterfaceService } = require('./AIInterfaceService');
         services.registerService('__ai-interfaces', AIInterfaceService);
 
-        const { AWSTextractService } = require('./AWSTextractService');
-        services.registerService('aws-textract', AWSTextractService);
+        // TODO: services should govern their own availability instead of
+        //       the module deciding what to register
 
-        const { AWSPollyService } = require('./AWSPollyService');
-        services.registerService('aws-polly', AWSPollyService);
+        if ( !! config?.services?.['aws-textract']?.aws ) {
+            const { AWSTextractService } = require('./AWSTextractService');
+            services.registerService('aws-textract', AWSTextractService);
+        }
 
-        const { OpenAICompletionService } = require('./OpenAICompletionService');
-        services.registerService('openai-completion', OpenAICompletionService);
+        if ( !! config?.services?.['aws-polly']?.aws ) {
+            const { AWSPollyService } = require('./AWSPollyService');
+            services.registerService('aws-polly', AWSPollyService);
+        }
 
-        const { OpenAIImageGenerationService } = require('./OpenAIImageGenerationService');
-        services.registerService('openai-image-generation', OpenAIImageGenerationService);
+        if ( !! config?.openai ) {
+            const { OpenAICompletionService } = require('./OpenAICompletionService');
+            services.registerService('openai-completion', OpenAICompletionService);
+
+            const { OpenAIImageGenerationService } = require('./OpenAIImageGenerationService');
+            services.registerService('openai-image-generation', OpenAIImageGenerationService);
+        }
     }
 }