Document calibration/ and metadata/ archive paths

README.md

@@ -59,6 +59,24 @@ cx = 650.889160  cy = 364.692657
 
 The aligned depth stream shares these intrinsics by construction. Depth in meters = value / 1000.
 
+## Calibration recordings & raw metadata (archive)
+
+The original calibration recordings and per-sequence provenance from the 2021 sessions are
+archived here as well (not needed to run the sequences, but preserved as the primary copy):
+
+- `calibration/10-08/` — `timestamps_camera_calibration_seq01.bag`,
+  `viconMarker_camera_calibration_seq01.bag`, `viconMarker_camera_calibration_seq02.bag`
+- `calibration/10-14/` — `deformation_model_calibration.bag`,
+  `lukas_pattern_calibration_01.bag`, `photo_calibration.bag`
+
+These are the bz2-compressed ROS1 bags used for the Vicon-marker/camera extrinsic
+(`T_vicon_camera.txt`), camera-clock/Vicon timestamp calibration, and photometric/pattern
+calibration.
+
+- `metadata/10-08.tar.gz`, `metadata/10-14.tar.gz` — the original per-sequence recording folders
+  (environment and git-version snapshots, `params.yaml`, `tf.cfg`, raw Vicon/tf bags, and
+  `vicon_direct_features_*.txt`), documenting how each sequence's ground truth was produced.
+
 ## Citation
 
 ```bibtex