Update config.ts: user-configurable base URLs, models, and LLM provider override

multi-agent-system/config.ts

@@ -25,24 +25,30 @@ export interface APIConfig {
 export function loadAndValidateConfig(): { config: APIConfig; warnings: string[] } {
   const warnings: string[] = [];
 
+  // ═══ USER-CONFIGURABLE: All base URLs, API keys, and models from .env ═══
   const config: APIConfig = {
     gemini: {
       apiKey: process.env.GEMINI_API_KEY || '',
-      baseUrl: 'https://generativelanguage.googleapis.com/v1beta',
-      models: { pro: 'gemini-2.5-pro', flash: 'gemini-2.5-flash', lite: 'gemini-2.5-flash-lite' },
+      baseUrl: process.env.GEMINI_BASE_URL || 'https://generativelanguage.googleapis.com/v1beta',
+      models: {
+        pro: process.env.GEMINI_MODEL_PRO || 'gemini-2.5-pro',
+        flash: process.env.GEMINI_MODEL_FLASH || 'gemini-2.5-flash',
+        lite: process.env.GEMINI_MODEL_LITE || 'gemini-2.5-flash-lite',
+      },
     },
     featherless: {
-      apiKey: process.env.FEATHERLESS_API_KEY || '',
-      baseUrl: process.env.FEATHERLESS_BASE_URL || 'https://api.featherless.ai/v1',
-      model: process.env.FEATHERLESS_MODEL || 'meta-llama/Meta-Llama-3.1-70B-Instruct',
+      // If user provides a custom LLM, use that instead of Featherless
+      apiKey: process.env.LLM_API_KEY || process.env.FEATHERLESS_API_KEY || '',
+      baseUrl: process.env.LLM_BASE_URL || process.env.FEATHERLESS_BASE_URL || 'https://api.featherless.ai/v1',
+      model: process.env.LLM_MODEL || process.env.FEATHERLESS_MODEL || 'meta-llama/Meta-Llama-3.1-70B-Instruct',
     },
     huggingface: {
       token: process.env.HF_TOKEN || '',
-      baseUrl: 'https://api-inference.huggingface.co/models',
+      baseUrl: process.env.HF_BASE_URL || 'https://api-inference.huggingface.co/models',
       models: {
-        ner: 'dbmdz/bert-large-cased-finetuned-conll03-english',
-        zeroShot: 'facebook/bart-large-mnli',
-        embeddings: 'sentence-transformers/all-MiniLM-L6-v2',
+        ner: process.env.HF_MODEL_NER || 'dbmdz/bert-large-cased-finetuned-conll03-english',
+        zeroShot: process.env.HF_MODEL_ZERO_SHOT || 'facebook/bart-large-mnli',
+        embeddings: process.env.HF_MODEL_EMBEDDINGS || 'sentence-transformers/all-MiniLM-L6-v2',
       },
     },
   };