feat: add quiet client option

tests/integration/test_features.py

@@ -35,6 +35,23 @@ class TestDryRun:
         assert result.returncode == 0, f"Exit {result.returncode}: {result.stderr[:100]}"
         assert "Dry run:" in result.stdout, f"No dry run output: {result.stdout[:200]}"
 
+    def test_quiet_suppresses_dry_run_output(self):
+        result, dur = run_client(
+            SOURCE_DIR, DEST_DIR,
+            flags=["-q", "-n", "--progress", "--stats"],
+        )
+        assert result.returncode == 0, f"Exit {result.returncode}: {result.stderr[:100]}"
+        assert result.stdout == ""
+        assert result.stderr == ""
+
+    def test_quiet_preserves_errors(self):
+        result, dur = run_client(
+            SOURCE_DIR, DEST_DIR,
+            flags=["--quiet", "--server-port", "1"],
+        )
+        assert result.returncode != 0
+        assert result.stderr != ""
+
 
 class TestArchiveMode:
     def test_archive_mode(self, shared_server):

tests/test_client_cli.c

@@ -262,9 +262,7 @@ static void test_parse_args_unknown_option() {
 
 /* Parsed-but-unimplemented options must fail instead of being silently accepted. */
 static void test_parse_args_rejects_unimplemented_options() {
-  static const char* const options[] = {"-q",
-                                        "--quiet",
-                                        "--silent",
+  static const char* const options[] = {"--silent",
                                         "--queue-size",
                                         "-H",
                                         "--hard-links",
@@ -323,6 +321,21 @@ static void test_parse_args_rejects_unimplemented_options() {
   }
 }
 
+/* Test both rsync-compatible quiet spellings. */
+static void test_parse_args_quiet() {
+  static const char* const options[] = {"-q", "--quiet"};
+  for (size_t i = 0; i < sizeof(options) / sizeof(options[0]); i++) {
+    Config* cfg = config_create();
+    char* argv[] = {"fastsync", (char*)options[i], "/src", "/dst"};
+    int positional_args[2];
+    int positional_count = 0;
+
+    EXPECT_EQ_INT(parse_args(cfg, 4, argv, positional_args, &positional_count), 0);
+    EXPECT_TRUE(cfg->quiet);
+    config_delete(cfg);
+  }
+}
+
 /* Test parse_args with --archive flag */
 static void test_parse_args_archive() {
   Config* cfg = config_create();
@@ -359,5 +372,6 @@ void test_client_cli() {
   test_parse_args_valid_compression_level();
   test_parse_args_unknown_option();
   test_parse_args_rejects_unimplemented_options();
+  test_parse_args_quiet();
   test_parse_args_archive();
 }