feat(d5-daemon-core): daemon lifecycle, module config, ::dest, PROTOCOL 2.15.0

src/client/client_cli.c

@@ -1485,7 +1485,6 @@ int main(int argc, char* argv[]) {
       goto cleanup;
     }
     config->save_to_disk = true;
-    config_parse_ssh_dest(config);
   } else if (positional_count == 1) {
     log_message(LOG_LEVEL_ERROR, "missing destination argument");
     print_usage();
@@ -1510,6 +1509,16 @@ int main(int argc, char* argv[]) {
     }
   }
 
+  /* Resolve the destination's transport form after the source/destination are
+   * final (positional, --dest-dir, or the FASTSYNC_DEST_DIR env fallback):
+   * host::module[/path] selects the daemon TCP transport, host:path the SSH
+   * transport, anything else stays local TCP.  An invalid daemon destination
+   * already logged its reason and is a hard error here. */
+  if (config_parse_transport_dest(config) < 0) {
+    exit_code = 1;
+    goto cleanup;
+  }
+
   if (!validate_config(config)) {
     exit_code = 1;
     goto cleanup;

src/client/usage.c

@@ -11,6 +11,9 @@ void print_usage(void) {
   printf("Destination formats:\n");
   printf("  user@host:/path     SSH transport (rsync-style)\n");
   printf("  host:/path          SSH transport (current user)\n");
+  printf("  host::module/path   Daemon TCP transport (fastsync-server --daemon);\n");
+  printf("                      module names a server-side module, path is relative\n");
+  printf("                      within it (connect with --server-port)\n");
   printf("  /local/path         TCP transport (requires server on localhost:8080)\n");
   printf("\n");
   printf("Options:\n");