test: Tor controller and API endpoint tests

Covers: password/cookie/bare auth, auth failure, connect failure,
NEWNYM success/rate-limiting/reconnect, GETINFO multi-line parsing,
start/stop lifecycle, GET /tor status, POST /tor/newnym dispatch,
and TorConfig YAML parsing.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_config.py

@@ -141,3 +141,37 @@ class TestConfig:
         c = load_config(cfg_file)
         assert c.pool_size == 16
         assert c.pool_max_idle == 45.0
+
+    def test_tor_config_from_yaml(self, tmp_path):
+        cfg_file = tmp_path / "test.yaml"
+        cfg_file.write_text(
+            "tor:\n"
+            "  control_host: 10.0.0.1\n"
+            "  control_port: 9151\n"
+            "  password: secret\n"
+            "  cookie_file: /var/run/tor/cookie\n"
+            "  newnym_interval: 60\n"
+        )
+        c = load_config(cfg_file)
+        assert c.tor is not None
+        assert c.tor.control_host == "10.0.0.1"
+        assert c.tor.control_port == 9151
+        assert c.tor.password == "secret"
+        assert c.tor.cookie_file == "/var/run/tor/cookie"
+        assert c.tor.newnym_interval == 60.0
+
+    def test_tor_config_defaults(self, tmp_path):
+        cfg_file = tmp_path / "test.yaml"
+        cfg_file.write_text("tor:\n  password: test\n")
+        c = load_config(cfg_file)
+        assert c.tor is not None
+        assert c.tor.control_host == "127.0.0.1"
+        assert c.tor.control_port == 9051
+        assert c.tor.cookie_file == ""
+        assert c.tor.newnym_interval == 0.0
+
+    def test_no_tor_config(self, tmp_path):
+        cfg_file = tmp_path / "test.yaml"
+        cfg_file.write_text("listen: 1080\n")
+        c = load_config(cfg_file)
+        assert c.tor is None