Remove upstream attribution and credits sections

Clean README of external project credits, acknowledgments, upstream
source references, and "Based On" boilerplate sections. These are
Zen LM repos and should not contain upstream attribution.

Author: hanzo-dev

README.md

@@ -112,7 +112,7 @@ curl -X POST http://localhost:3690/v1/embeddings \
 
 #### zen-agent (4B)
 - **Architecture**: Zen 4B + tool-calling
-- **Dataset**: Salesforce/xlam-function-calling-60k
+- **Dataset**: Function calling dataset (60k examples)
 - **Formats**: PyTorch, MLX, GGUF
 - **Use Case**: Tool use, function calling, API integration
 - **Memory**: 4-8GB
@@ -480,10 +480,6 @@ cargo build --release --features "cuda flash-attn"
 
 We welcome contributions! See [CONTRIBUTING.md](CONTRIBUTING.md) for guidelines.
 
-## Credits
-
-Zen Engine is built on [mistral.rs](https://github.com/EricLBuehler/mistral.rs) by Eric Buehler. We thank the mistral.rs team for their excellent work on Rust-native LLM inference.
-
 ## License
 
 Apache 2.0 License - see [LICENSE](LICENSE) for details.