fix chatgui: self in member list, online status on reconnect, lb spam

- cs_handle_welcome(): add self to local peers_<ch_id> so
  joiner sees own account in channel member list
- cs_on_conn_up(): post CHANNEL_PEERS_ONLINE after reconnect
  so GUI shows connected status (was only posted on conn_down)
- etcp_loadbalancer: DEBUG_WARN -> DEBUG_DEBUG for no suitable
  link: tmr:wait — normal shaper behavior, not a warning

src/etcp_loadbalancer.c

@@ -57,7 +57,7 @@ struct ETCP_LINK* etcp_loadbalancer_select_link(struct ETCP_CONN* etcp) {
     
     if (available_count == 0) {
         if (etcp->links)
-            DEBUG_WARN(DEBUG_CATEGORY_ETCP, "[%s] no suitable link found: tmr:%s",
+            DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "[%s] no suitable link found: tmr:%s",
                        etcp->log_name, etcp->links->shaper_timer?"wait":"rdy");
         return NULL;
     }

tools/chatgui/transport/chat_sync.c

@@ -513,6 +513,10 @@ static void cs_on_conn_up(struct ETCP_CONN* conn, void* arg) {
     }
 
     member_sync_set_online(g_cs->inst, peer, 1);
+    for (int i = 0; i < g_cs->channel_count; i++) {
+        for (int j = 0; j < g_cs->channels[i].peer_count; j++)
+            if (g_cs->channels[i].peer_ids[j] == peer) { cs_post_channel_online(g_cs, g_cs->channels[i].channel_id); break; }
+    }
 }
 
 static void cs_on_conn_down(struct ETCP_CONN* conn, void* arg) {
@@ -1204,6 +1208,18 @@ static void cs_handle_welcome(struct chat_sync* cs, uint64_t peer,
 
     cs_refresh_channels(cs);
 
+    /* add self to local peers table (server added joiner to its DB; client must do the same) */
+    {
+        uint64_t myid = cs->inst->node_id;
+        const uint8_t* my_x25 = cs->inst->my_keys.public_key;
+        const uint8_t* my_ed = cs->inst->my_ed25519_pubkey;
+        const char* my_name = cs->inst->name[0] ? cs->inst->name : "";
+        int src = topo_node_sqlite_member_put(db, ch_id, myid, NULL, 0, NULL, 0, my_x25, my_ed, my_name, NULL);
+        if (src != 0)
+            DEBUG_ERROR(DEBUG_CATEGORY_CONNECTIVITY, "%s: member_put(self) FAILED in WELCOME ch=%s rc=%d", CS_ID, ch_id, src);
+        else
+            DEBUG_DEBUG(DEBUG_CATEGORY_DEBUG, "%s: WELCOME added self to peers ch=%s node=0x%016llx", CS_ID, ch_id, (unsigned long long)myid);
+    }
 
     uint8_t evt[65]; uint8_t ch_id_len = (uint8_t)strlen(ch_id);
     evt[0] = ch_id_len; memcpy(evt + 1, ch_id, ch_id_len);