Prepare coordinated RF-001A OTA test

docs/handoff/TX_NODE_STATE.md

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+# TX node state
+
+ROLE =
+MAIN PC TX NODE
+
+PROJECT PATH =
+C:\Users\user\Desktop\projects\SDR_Rover_Video
+
+BRANCH =
+video-development
+
+HARDWARE =
+Auron HackRF Plus; hackrf_info reports HackRF One r9
+
+RF-001A TEST SPEC =
+configs/rf/rf001a_common_clock.json
+
+Main PC owns development and pushes video-development. Current RF TX authorization = 0.
+
+DO NOT WITHOUT EXPLICIT TASK AUTHORIZATION:
+- RF TX or continuous TX
+- firmware or CPLD update
+- hackrf_spiflash
+- Zadig or USB driver changes
+- RF parameter changes
+
+Large IQ/video files and local device logs stay out of Git.