feat: Add example YAML config files

- Add configs/minimal.yaml with basic model and sampling configuration
- Add configs/override.yaml with different settings for override testing
- Use relative paths that resolve correctly from configs/ directory
- Include simple_io and conversation mode settings for deterministic testing

Co-Authored-By: Jaime Mizrachi <[email protected]>

Author: devin-ai-integration[bot]

configs/minimal.yaml

@@ -0,0 +1,9 @@
+model:
+  path: ../models/tinyllama-1.1b-chat-v1.0.Q4_K_M.gguf
+n_ctx: 256
+sampling:
+  seed: 42
+  temp: 0.0
+prompt: "Hello from YAML"
+n_predict: 16
+simple_io: true

configs/override.yaml

@@ -0,0 +1,9 @@
+model:
+  path: ../models/tinyllama-1.1b-chat-v1.0.Q4_K_M.gguf
+n_ctx: 256
+sampling:
+  seed: 42
+  temp: 0.8
+prompt: "Hello from YAML override"
+n_predict: 32
+simple_io: true