catalog: add virig_5imus_4cams (hosted, no results yet) + sensor used_in

rename virig-{3,4}cams -> virig-4imus-{3,4}cams (add IMU count)

datasets.json: tum_rs/double_sphere license wording (confirmed unlicensed, recipe-only)

multi-cam-extrinsics: add inter-camera time-offset repeatability (repeat_dt_ms) for the 2 cross-model rigs

multi-cam-extrinsics track seeded: 8 stereo-rig extrinsic-repeatability records (trans/rot std across collections, diverged folds gated) + tracks.json roster/primary

rolling-shutter track seeded: 3 ELP RS-readout records (mean+repeatability) + schema v1.1 rs_readout fields + tracks.json columns

sensors.json: sensor registry with derived used_in (28 sensors)

datasets.json: Blackfly model filled (BFS-U3-16S2M, IMX273)

card: add repo card (layout, batches, citing, submitting)

datasets.json: dataset catalog (per-physical-dataset hardware/board/license metadata, generated by catalog.py)

Add repeat_intrinsics_px (k-fold repeatability across collections, same-model majority group; fisheye_dataset excluded - different cameras); fix Kalibr omni/ds/eucm intrinsics parsing in outputs; records -> schema 1.1

Batch layout <tool>/<batch>/ (2026-05-09); add calibration outputs (*.output.json) + calibration_ref; schema v1.1 (batch + quality metrics); tracks.json metric -> {primary, columns}

Organize records into per-tool folders (CamCalib/, Kalibr/); normalize JSON format; drop the template example result.json

Add track registry (rosters = coverage denominators, per-track metrics, scoring params)

schemas: add track + dataset tags (camera_model/shutter/sensor)

results: add track + camera_model/shutter/sensor tags to all records

leaderboard: full CamCalib+Kalibr benchmark results (98 records across 61 datasets)

add leaderboard result result.json

replace placeholder seeds with real CamCalib/Kalibr benchmark results

add submission/result JSON schemas

seed: 6 placeholder leaderboard records

initial commit