Update .env.example with Chroma Cloud settings

Author: gabaoun

.env.example

@@ -1,10 +1,17 @@
 # Core API Keys
 OPENAI_API_KEY=your_openai_api_key_here
 
-# Qdrant Vector Store
+# Qdrant Vector Store (Deprecated in favor of Chroma Cloud)
 QDRANT_URL=http://localhost:6333
 QDRANT_API_KEY=your_qdrant_api_key_here
 
+# Chroma Cloud
+CHROMA_HOST=api.trychroma.com
+CHROMA_API_KEY=your_chroma_api_key_here
+CHROMA_TENANT=d229b721-6e42-4d8a-800d-54f2d56651a6
+CHROMA_DATABASE=RAGabaoun
+CHROMA_COLLECTION=project_aether_docs
+
 # Redis Semantic Cache
 REDIS_HOST=localhost
 REDIS_PORT=6379