CLAUDE: Embed all curt_* run config as image metadata on DNN saves

tagCuasImp() serializes every curt_* param (via IntersceneMatchParameters.setProperties,
so new params are auto-included) into the ImagePlus properties and calls
EyesisTiff.encodeProperiesToInfo -> XML in the "Info" field -> FileSaver writes it
to the TIFF ImageDescription. Applied to -DNN-RECT/-HYPER-RECT/-OFFSET. The python
reader (python3-imagej-tiff format) decodes it back, so outputs are self-describing;
ROI/model/patch/vmax/etc. restore without manual entry (supplements the filename tag).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/main/java/com/elphel/imagej/cuas/rt/CuasDetectRT.java

@@ -310,7 +310,22 @@ public class CuasDetectRT {
 			}
 		}
 	}
-	
+
+	/** Tag a saved CUAS image with the full run config: copy ALL curt_* params (via the config
+	 * serializer, so any new curt_ param is auto-included) into the ImagePlus properties and encode
+	 * them to the ImageJ Info field (XML -> TIFF ImageDescription). The python reader (python3-imagej-tiff
+	 * format) decodes <key>value</key> back to a dict - so every output is self-describing. By Claude on 06/16/2026 */
+	private static ImagePlus tagCuasImp(ImagePlus imp, com.elphel.imagej.tileprocessor.IntersceneMatchParameters p) {
+		if ((imp == null) || (p == null)) return imp;
+		java.util.Properties props = new java.util.Properties();
+		p.setProperties("", props);                       // serialize all params -> props (keys "curt_..." among others)
+		for (String key : props.stringPropertyNames()) {
+			if (key.startsWith("curt_")) imp.setProperty(key, props.getProperty(key));
+		}
+		com.elphel.imagej.readers.EyesisTiff.encodeProperiesToInfo(imp); // -> imp "Info" XML -> FileSaver writes ImageDescription
+		return imp;
+	}
+
 	
 	public int getWidth() {
 		return width;
@@ -1267,12 +1282,12 @@ public class CuasDetectRT {
    					int [] win_dnn = timeWindow(ts_dnn); // timing ROI // By Claude on 06/14/2026
    					double [][][][] dnn_w = win4(dnn_roi, win_dnn); String [] ts_dnn_w = winS(ts_dnn, win_dnn); // By Claude on 06/14/2026
    					if (curt_save_c5rect) {                                                   // By Claude on 06/13/2026
-   						QuadCLTCPU.saveImagePlusInDirectory(cuasRTUtils.showConvKernel5d(      // By Claude on 06/13/2026
-   								dnn_w, curt_save_select, ts_dnn_w, title_dnn+"-RECT"), getModelDirectory()); // By Claude on 06/14/2026
+   						QuadCLTCPU.saveImagePlusInDirectory(tagCuasImp(cuasRTUtils.showConvKernel5d( // By Claude on 06/13/2026
+   								dnn_w, curt_save_select, ts_dnn_w, title_dnn+"-RECT"), clt_parameters.imp), getModelDirectory()); // metadata: all curt_* // By Claude on 06/16/2026
    					}                                                                         // By Claude on 06/13/2026
    					if (clt_parameters.imp.curt_save_c5hyper) {                               // By Claude on 06/13/2026
-   						QuadCLTCPU.saveImagePlusInDirectory(cuasRTUtils.showConvKernel5dHyperRect( // By Claude on 06/13/2026
-   								dnn_w, curt_save_select, ts_dnn_w, title_dnn+"-HYPER-RECT"), getModelDirectory()); // By Claude on 06/14/2026
+   						QuadCLTCPU.saveImagePlusInDirectory(tagCuasImp(cuasRTUtils.showConvKernel5dHyperRect( // By Claude on 06/13/2026
+   								dnn_w, curt_save_select, ts_dnn_w, title_dnn+"-HYPER-RECT"), clt_parameters.imp), getModelDirectory()); // metadata: all curt_* // By Claude on 06/16/2026
    					}                                                                         // By Claude on 06/13/2026
    					// -DNN-OFFSET: the per-pixel sub-pixel offset (dx,dy) + confidence s over the ROI,     // By Claude on 06/14/2026
    					// to see whether a cluster's offsets converge on one fractional position. Channels
@@ -1290,8 +1305,8 @@ public class CuasDetectRT {
    								off_hyper[0][k][p] = dx; off_hyper[1][k][p] = dy; off_hyper[2][k][p] = sv;
    							}
    						}
-   						QuadCLTCPU.saveImagePlusInDirectory(ShowDoubleFloatArrays.showArraysHyperstack(
-   								off_hyper, rwid, title_dnn+"-OFFSET", ts_dnn_w, new String[]{"dx","dy","s"}, false), getModelDirectory());
+   						QuadCLTCPU.saveImagePlusInDirectory(tagCuasImp(ShowDoubleFloatArrays.showArraysHyperstack(
+   								off_hyper, rwid, title_dnn+"-OFFSET", ts_dnn_w, new String[]{"dx","dy","s"}, false), clt_parameters.imp), getModelDirectory()); // metadata: all curt_* // By Claude on 06/16/2026
    					}
    					// Feed the DNN field to the recurrent layer (Layer 2): as-is, or offset-splatted (px+dx,py+dy). // By Claude on 06/14/2026
    					// Tune the recurrent blend with curt_recur_w (0.25/0.75) etc.; the field is [0,1]-scaled so rs_min may need lowering.