Define acknowledged call termination and enable route tracing

src/call/call_priv.h

@@ -11,6 +11,8 @@ struct call_session {
     struct ll_entry ll;
     uint64_t call_id, group_id, peer_node_id;
     uint8_t role, state, reason;
+    uint8_t end_subcmd;
+    uint64_t end_started_tb;
     struct call_ctx *ctx;
     struct CONN_MGR_HANDLE *cm_handle;
     void *ring_timer, *invite_timer;

src/call/call_proto.h

@@ -21,6 +21,7 @@ enum {
     CALL_SUBCMD_BUSY    = 0x05,  /* {call_id:8} */
     CALL_SUBCMD_CANCEL  = 0x06,  /* {call_id:8} */
     CALL_SUBCMD_HANGUP  = 0x07,  /* {call_id:8, reason:1} */
+    CALL_SUBCMD_END_ACK = 0x08,  /* {call_id:8}: подтверждение HANGUP/CANCEL/DECLINE */
     CALL_SUBCMD_MEDIA   = 0x10,  /* call_pkt_media + payload[] */
 };
 
@@ -64,6 +65,7 @@ struct call_pkt_decline { uint8_t subcmd; uint64_t call_id; uint8_t reason; };
 struct call_pkt_busy    { uint8_t subcmd; uint64_t call_id; };
 struct call_pkt_cancel  { uint8_t subcmd; uint64_t call_id; };
 struct call_pkt_hangup  { uint8_t subcmd; uint64_t call_id; uint8_t reason; };
+struct call_pkt_end_ack { uint8_t subcmd; uint64_t call_id; };
 
 struct call_pkt_media {
     uint8_t  subcmd;      /* CALL_SUBCMD_MEDIA */
@@ -93,6 +95,8 @@ struct call_pkt_media {
 #define CALL_NO_ROUTE_MAX_STRIKES 20  /* 20 × 300мс ≈ 6с без маршрута → fail-fast CONNECT_FAIL */
 #define CALL_NO_TRAFFIC_TB    200000  /* 20с — нет входящих медиа → HANGUP */
 #define CALL_TEARDOWN_DELAY_TB 5000   /* 500мс — задержка разрыва conn_mgr после завершения */
+#define CALL_END_RETRY_TB      3000   /* 300мс — повтор финальной команды до END_ACK */
+#define CALL_END_TIMEOUT_TB  200000   /* 20с — предел удержания завершённой сессии без END_ACK */
 #define CALL_MAX_TX_FRAMES    750     /* 15с: 10с перебоя + 5с запаса */
 
 #ifdef __cplusplus

tests/test_call.c

@@ -808,7 +808,7 @@ int main(int argc, char** argv) {
     if (getenv("UTUN_TEST_DEBUG")) {
         debug_set_category_level_by_name("call", "trace");
         debug_set_category_level_by_name("bgp", "info");
-        debug_set_category_level_by_name("etcp_route", "info");
+        debug_set_category_level_by_name("etcp_route", "trace");
         debug_set_category_level_by_name("member_sync", "info");
         debug_set_category_level_by_name("chat_sync", "info");
     }