feat: add rsync partial progress alias

src/client/client_cli.c

@@ -211,6 +211,12 @@ static int apply_table_option(Config* config, const OptionEntry* entry, const ch
 int parse_args(Config* config, int argc, char* argv[], int* positional_args,
                int* positional_count) {
   for (int i = 1; i < argc; i++) {
+    if (strcmp(argv[i], "-P") == 0) {
+      config->partial = true;
+      config->show_progress = true;
+      continue;
+    }
+
     const OptionEntry* entry = find_table_option(argv[i]);
     if (entry) {
       if (entry->kind != OPT_FLAG) {

src/client/usage.c

@@ -20,6 +20,7 @@ void print_usage(void) {
   printf("  -n, --dry-run       Show what would be transferred\n");
   printf("  -p <port>           SSH port (default: 22)\n");
   printf("  --progress          Show transfer progress\n");
+  printf("  -P                  Alias for --partial --progress\n");
   printf("  --delete            Delete files on receiver not in source\n");
   printf("  --exclude <pattern> Exclude files matching pattern\n");
   printf("  --include <pattern> Only include files matching pattern\n");