Add RX task watcher and approval workflow

docs/handoff/RX_RESULT_TEMPLATE.md

@@ -0,0 +1,23 @@
+TASK_ID =
+TASK_STATUS =
+SOURCE_HEAD =
+STARTED_AT =
+FINISHED_AT =
+
+SUMMARY =
+
+CHECKS =
+
+HARDWARE_ACTIONS =
+
+RF_TX =
+YES / NO
+
+FILES_CREATED =
+
+ERRORS =
+
+NEXT_ACTION =
+
+The result publisher must also create `RX_RESULT.json` with the same fields.
+Raw IQ, video and waveform files must stay outside Git.