fake_realsense: clocked mode (a frameset every 1/fps s, like the device),
FakeAlign, camera timestamps, and the frame number written in the pixels
(color block, depth[0, 0]) so a test knows which frame an image came from.
test_two_channels:
- /api/rgb, /api/capture, /api/depth: rgb and depth from one frame (criterion
B of optimize-streams R03; failed before the previous commit: 1 vs 2);
- /api/color/latest serves strictly newer frames, the image is the frame its
headers name (camera clock), 504 on timeout, each frame encoded once;
- color >= 25 new frames/s while /api/capture loops (criteria A1/A2, 3 s).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
