Support YAML pipeline configuration

README.md

@@ -31,9 +31,14 @@ D:\MiniConda\envs\lightML\python.exe -m bgfilter.cli `
   --input Samples\TestImage.png `
   --output Outputs\TestImage_rgba.png `
   --debug-dir Outputs\TestImage_debug `
+  --config configs\default.yaml `
   --device cuda
 ```
 
+The CLI reads `configs/default.yaml` when `--config` is provided. Command-line
+options override config values, so tuning can usually happen in YAML while
+runtime choices such as `--device cpu` stay on the command line.
+
 Use CPU for validation when CUDA is unavailable:
 
 ```powershell
@@ -41,6 +46,7 @@ D:\MiniConda\envs\lightML\python.exe -m bgfilter.cli `
   --input Samples\TestImage.png `
   --output Outputs\TestImage_rgba.png `
   --debug-dir Outputs\TestImage_debug `
+  --config configs\default.yaml `
   --device cpu
 ```
 
@@ -51,6 +57,7 @@ D:\MiniConda\envs\lightML\python.exe -m bgfilter.cli `
   --input-dir Samples `
   --output-dir Outputs `
   --debug-dir Outputs\debug `
+  --config configs\default.yaml `
   --device cuda
 ```
 
@@ -64,6 +71,7 @@ D:\MiniConda\envs\lightML\python.exe -m bgfilter.cli `
   --input-dir Samples `
   --output-dir Outputs\chroma `
   --debug-dir Outputs\chroma_debug `
+  --config configs\default.yaml `
   --matting-method chroma `
   --device cpu
 ```
@@ -103,6 +111,7 @@ Run the bundled sample smoke check:
 D:\MiniConda\envs\lightML\python.exe scripts\smoke_samples.py `
   --samples-dir Samples `
   --output-dir Outputs\smoke_samples `
+  --config configs\default.yaml `
   --device cpu `
   --fallback-to-chroma-alpha `
   --max-edge-green-excess-p95 0.50