Update README.md

README.md

@@ -124,17 +124,21 @@ The orchestrator downloads required artifacts (tokenizers, pretrained encoders,
 ### Default weights repo
 By default, the Space expects:
 
+```bash
 POLYFUSION_WEIGHTS_REPO=kaurm43/polyfusionagent-weights
 
 POLYFUSION_WEIGHTS_REPO_TYPE=model
+```
 
 - **Weights repo:** [kaurm43/polyfusionagent-weights](https://huggingface.co/kaurm43/polyfusionagent-weights)
 
 
 ### Override via environment variables (local or Space secrets)
+```bash
 POLYFUSION_WEIGHTS_REPO=your-org/your-weights-repo  
 POLYFUSION_WEIGHTS_REPO_TYPE=model  
 POLYFUSION_WEIGHTS_DIR=/path/to/cache  
+```
 
 ### Expected weights layout (inside the weights repo)
 The orchestrator expects these folders/files:
@@ -154,7 +158,9 @@ If you are building your own weights repo, mirror this structure.
 ### Chroma DB path
 The orchestrator defaults to a folder path (relative or absolute):
 
+```bash
 CHROMA_DB_PATH=chroma_polymer_db_big
+```
 
 ### Options
 - Ship a Chroma DB folder in this repo (good for small KBs)