Mudr-209

if (len > PAYLOAD_MAX) return; // guard assemble_record(payload, len); protect_record(); persist_record(); update_merkle();

/* 4. Write to flash (append‑only) ------------------------------------------*/ static void persist_record(void) MUDR-209

flash_append(record_buf, sizeof(mudr209_hdr_t)+hdr->payload_sz); if (len &gt

/* 1. Prepare header --------------------------------------------------------*/ static void build_header(mudr209_hdr_t *hdr, uint32_t payload_len) // guard assemble_record(payload

static uint8_t record_buf[RECORD_MAX]; static uint32_t record_seq = 0;