fix: demote INIT retry spam (link/send logs) to DEBUG_DEBUG

Keep at INFO only 'Sending INIT request' line per retry.

src/etcp_connections.c

@@ -102,7 +102,7 @@ static void burst_resp_timeout_cb(void* arg) {
 
 static void etcp_link_send_init(struct ETCP_LINK* link, uint8_t reset, uint8_t collision) {
     DEBUG_TRACE(DEBUG_CATEGORY_CONNECTION, "");
-    DEBUG_INFO(DEBUG_CATEGORY_CONNECTION, "link=%p, is_server=%d, reset=%d, collision=%d", link, link ? link->is_server : -1, reset, collision);
+    DEBUG_DEBUG(DEBUG_CATEGORY_CONNECTION, "link=%p, is_server=%d, reset=%d, collision=%d", link, link ? link->is_server : -1, reset, collision);
     if (!link || !link->etcp || !link->etcp->instance) return;
 
     struct ETCP_DGRAM* dgram = u_malloc(PACKET_DATA_SIZE);
@@ -173,10 +173,10 @@ static void etcp_link_send_init(struct ETCP_LINK* link, uint8_t reset, uint8_t c
     // Debug: print remote address before sending
     if (link->remote_addr.ss_family == AF_INET) {
         struct sockaddr_in* sin = (struct sockaddr_in*)&link->remote_addr;
-        DEBUG_INFO(DEBUG_CATEGORY_ETCP, "[ETCP] INIT sending to %s:%d, link=%p, rst_req=%d", ip_to_str(&sin->sin_addr, AF_INET).str, ntohs(sin->sin_port), link, reset);
+        DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "[ETCP] INIT sending to %s:%d, link=%p, rst_req=%d", ip_to_str(&sin->sin_addr, AF_INET).str, ntohs(sin->sin_port), link, reset);
     } else if (link->remote_addr.ss_family == AF_INET6) {
         struct sockaddr_in6* sin6 = (struct sockaddr_in6*)&link->remote_addr;
-        DEBUG_INFO(DEBUG_CATEGORY_ETCP, "[ETCP] INIT sending to %s:%d, link=%p, rst_req=%d", ip_to_str(&sin6->sin6_addr, AF_INET6).str, ntohs(sin6->sin6_port), link, reset);
+        DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "[ETCP] INIT sending to %s:%d, link=%p, rst_req=%d", ip_to_str(&sin6->sin6_addr, AF_INET6).str, ntohs(sin6->sin6_port), link, reset);
     }
     
     etcp_encrypt_send(dgram);