Fix live CAN feedback with CH0-only asynchronous risk transmission

Send 0x1F6 risk updates through a bounded latest-result worker on CH0 and disable CH1 initialization, reception, transmission and live display. Preserve the four actual-position bytes from 0x391 and recorded-session compatibility.

Include regression coverage, Orin camera/TensorRT/CAN validation, and the verified standalone binary with refreshed checksums.

orin/SHA256SUMS

@@ -1,7 +1,7 @@
 6d5e874fd27fcfd75d303d7e35d9672028af71041f52dcc82a1e83676faefa65  ./bin/drivers/max9295.ko
 8a78d04ef8be44e9b62a5e4ee315d3d6d679e34aedff02a234bbf4d40e222933  ./bin/drivers/max9296.ko
 3da628587477cc35d5e3f8aee86e718e2ddf16808e893e00ba6e164b2307e843  ./bin/drivers/sgx-yuv-gmsl2.ko
-e8788d22fd6db0e3b9edc95a02322a51ca7951e1df81fea10f34db7da3143461  ./build/camera_risk
+418637a35f6ad05441578db1333e15714262a9c0ee088f10c2dd84923471cd0f  ./build/camera_risk
 d44dcf10df43c7bcd73b7f2b64e4117d207435a5218c2146bfb659566cb320ba  ./config/camera.json
 9ba768d559fd3b64e833b50c62c70f2adfd6c169620aea5fba32cfb1b4c5b0e9  ./config/door_mask.json
 ebcd09e8c2e35008adbb0c1d222e580b17e0df1c8093df3481ba3374cd9a8174  ./engines/rtmw_l_384.engine
@@ -10,7 +10,7 @@ f6a65b926ac1144484f4aa93cd26d7997d32d62310ab93fe867f2bd4412222e9  ./engines/yolo
 8dae8c557deadbe6bd7241c0dcd7025cb007077ee39a79b115e953a2b22cd9c1  ./lib/libusb-1.0.so.0
 ab8b7f7249d5fb73d1d33d14fa7532a522088ffb6c25f37ba334daf4c6b4d313  ./lib/libusbcanfd.so
 ab8b7f7249d5fb73d1d33d14fa7532a522088ffb6c25f37ba334daf4c6b4d313  ./lib/libusbcanfd.so.1.0.12
-bb61f669d8b471c5ca42045b31a0e6fd300235da37a80893ae229f37deb1b7b9  ./README.md
+584875c5a52f969da7ae50514fd627749123f3db7140058052055982a6c01f2f  ./README.md
 7f42b0e7f9396e0d82313a892fc62c153261dab1206a206a466bce6376f58a36  ./run.sh
 41ebe2dcf57674232ca137d024e99447b467049cb1c63a284daae274296cb78c  ./scripts/99-usbcanfd.rules
 920102fc5e91bde9b78f6f7c5cb2ff8761a0c39b63c7a28b3347d5de5fe7c60a  ./scripts/enable_can_access.sh