lamp + monoprior: catalog tools relay the source H.264 video (no per-frame JPEGs); LAMP follow eye, pinhole-space overlays, no 3D joint labels

[pablo-rerun]

Viewer-side fixes for the LAMP robocap catalog tool from watching the saved 60-s recording of s29, plus the switch from per-frame JPEGs to relaying the source H.264 streams in both catalog tools.

Video relay (both tools). The catalog stores H.264 packets; the tools decoded them on NVDEC, re-encoded downsized JPEG previews per frame and logged those. Now simplecv.rerun_dataloader.relay_video_stream re-logs the stored packets for the processed window as a VideoStream at the catalog's own entity path (world/rig_00/<cam>/pinhole/video): one packets query, the codec once statically, then every sample on video_time from the last keyframe at or before the window start. The viewer decodes; the tools stop decoding for display. LAMP's previews and the whole PREVIEW_SCALE machinery are gone, the 2D overlays are logged in native pixel coordinates, and the rig is logged at full resolution again. X-Lens drops its fisheye JPEGs and keeps the derived images (depth colormap, rectified twins, depth PNGs).

recording (60 s, 4 cameras)	before	after	what the viewer shows
LAMP s29	583 MB	363 MB	1920x1080 @ 30 fps (was 960x540 @ 10 fps JPEG)
X-Lens s21	885 MB	860 MB	1920x1080 @ 30 fps (was 1120x630 @ 5 fps JPEG)

LAMP viewer fixes. 2D views rooted at the camera entity so image and detections are both inside; 3D view rooted at the rig with the robocap first-person follow eye (dataforge recipe; forward = +Y, up = -Z in the rig frame, eye 3.5 m behind and 1.8 m above), show_labels=False on the SMPL joints; blueprint sent with make_active=True, make_default=True explicitly.

Verified on 0.37.0 with a headless viewer (pixel evidence in /tmp/fleet-artifacts/rrd/video-relay-validation/ and .../lamp-validation/ on pablo-dl-server): the saved blueprint activates on load; the four 2D panes show the relayed video with overlays; the 3D frustums carry video frames; the follow eye keeps the rig at the same screen position across time; no black panes (the rerun 0.33 H.264 issue does not reproduce with ffmpeg 8.1 on PATH). rerun rrd verify clean for both; served at https://pablo-dl-server.ilish-ruler.ts.net:10499/rrd/{lamp-s29-60s,xlens-s21-60s}.rrd.

Gates: lamp-dev lint/typecheck/deadcode/tests (48 passed); monoprior-dev tests 131 passed, monoprior-catalog-dev lint/typecheck/deadcode clean; simplecv dataloader tests (new relay test asserts keyframe anchoring and sample count). API facts: VideoStream.from_fields(sample=, is_keyframe=); rr.VideoCodec is not an IntEnum (use .value).

Follow-ups noted, not done here: exclude .../pinhole/detections/** from LAMP's 3D view to keep the frustum frames uncluttered; the relay re-queries the segment packets once per camera (about 30 MB each); the CORS static server on :10499 now runs as the transient user unit fleet-artifacts-cors-10499.