Update config.yaml

config.yaml

@@ -1,10 +1,11 @@
 # ========================================
-# Simple Self-Service KB Assistant 
+# Self-Service KB Assistant — Configuration
+# All values here are read by app.py at startup.
 # ========================================
 
 client:
   name: "Self-Service KB Assistant"
-  description: "Semantic search over a small knowledge base, returning relevant excerpts."
+  description: "Semantic search over a knowledge base, with LLM-powered answer generation."
   theme_color: "blue"
 
 kb:
@@ -14,8 +15,17 @@ models:
   embedding: "sentence-transformers/all-MiniLM-L6-v2"
 
 chunking:
-  chunk_size: 500
-  overlap: 100
+  chunk_size: 500       # Target characters per chunk (breaks on sentence boundaries)
+  overlap: 100          # Characters of overlap carried into the next chunk
+
+retrieval:
+  top_k: 3             # Number of chunks to retrieve per query
+  min_similarity: 0.3  # Minimum cosine similarity score to include a result
+  context_chars: 1500  # Max characters of context passed to the LLM
+
+llm:
+  model: "TinyLlama/TinyLlama-1.1B-Chat-v1.0"
+  max_new_tokens: 256
 
 quick_actions:
   - label: "📚 Getting Started"
@@ -27,4 +37,4 @@ quick_actions:
 
 messages:
   welcome: "👋 Ask me anything you'd normally search for in a knowledge base."
-  no_answer: "❌ I couldn't find anything relevant in the knowledge base for this query yet."
+  no_answer: "❌ I couldn't find anything relevant in the knowledge base for this query."