chat: права админа + member tags (verified/deleted) + ncd revive

- chat_admin: передача канальных privkey другому узлу (encrypted+signed,
  ETCP_RT_ID_ADMIN_KEY), событие ADMIN_KEY_RECEIVED
- member_sync/bridge: tags verified/deleted, is_channel_owner, transfer_admin
  (android JNI + chatgui memberpropsdialog)
- node_conn_direct: оживление timed_out entry — обновление линков в существующем
  conn (убрать старые, добавить новые) + немедленная очистка не поднявшегося
  conn без fin_wait — фикс invite/reconnect

src/routing_layer/topo_node_sqlite.c

@@ -619,6 +619,39 @@ int topo_node_sqlite_channel_get_priv(sqlite3* db, const char* channel_id,
     return 0;
 }
 
+int topo_node_sqlite_channel_get_privs(sqlite3* db, const char* channel_id,
+    uint8_t* x25519_priv_out, uint8_t* ed25519_priv_out) {
+    if (!db || !channel_id || !x25519_priv_out || !ed25519_priv_out) return -1;
+    sqlite3_stmt* stmt = NULL;
+    if (sqlite3_prepare_v2(db,
+            "SELECT x25519_privkey, ed25519_privkey FROM channels WHERE channel_id=?", -1, &stmt, NULL) != SQLITE_OK) return -1;
+    sqlite3_bind_text(stmt, 1, channel_id, -1, SQLITE_STATIC);
+    if (sqlite3_step(stmt) != SQLITE_ROW) { sqlite3_finalize(stmt); return -1; }
+    const uint8_t* x = (const uint8_t*)sqlite3_column_blob(stmt, 0);
+    const uint8_t* e = (const uint8_t*)sqlite3_column_blob(stmt, 1);
+    if (!x || sqlite3_column_bytes(stmt, 0) < 32 || !e || sqlite3_column_bytes(stmt, 1) < 32) {
+        sqlite3_finalize(stmt); return -1;
+    }
+    memcpy(x25519_priv_out, x, 32);
+    memcpy(ed25519_priv_out, e, 32);
+    sqlite3_finalize(stmt);
+    return 0;
+}
+
+int topo_node_sqlite_channel_set_privs(sqlite3* db, const char* channel_id,
+    const uint8_t* x25519_priv, const uint8_t* ed25519_priv) {
+    if (!db || !channel_id || !x25519_priv || !ed25519_priv) return -1;
+    sqlite3_stmt* stmt = NULL;
+    if (sqlite3_prepare_v2(db,
+            "UPDATE channels SET x25519_privkey=?, ed25519_privkey=? WHERE channel_id=?", -1, &stmt, NULL) != SQLITE_OK) return -1;
+    sqlite3_bind_blob(stmt, 1, x25519_priv, 32, SQLITE_STATIC);
+    sqlite3_bind_blob(stmt, 2, ed25519_priv, 32, SQLITE_STATIC);
+    sqlite3_bind_text(stmt, 3, channel_id, -1, SQLITE_STATIC);
+    int rc = sqlite3_step(stmt) == SQLITE_DONE ? 0 : -1;
+    sqlite3_finalize(stmt);
+    return rc;
+}
+
 int topo_node_sqlite_channel_peers_all(sqlite3* db, const char* channel_id,
     uint8_t* buf, size_t buf_sz, size_t* out_len) {
     if (!db || !channel_id || !buf || !out_len) return -1;