test: add coverage for config TUI, ConfigField, schema changes, and CLI auto-setup

- test_config.py: GeneralConfig defaults, plugin_settings round-trip
- test_config_field.py: ConfigField dataclass, BasePlugin.config_fields() no-op,
  plugin subclass override
- test_config_tui.py: _get/_set_nested, _fid/_pfid helpers, GENERAL_FIELDS validity,
  ConfigApp general tab rendering, save handler, plugins table, plugin tab visibility,
  q key exit — using Textual run_test() + Pilot
- test_cli.py: auto-setup wizard on first run, skip wizard when config exists,
  /config in _STATIC_COMMANDS

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

tests/unit/test_config.py

@@ -48,3 +48,42 @@ def test_load_config_missing_raises(tmp_pyra_home):
     from pyra.config.manager import load_config
     with pytest.raises(FileNotFoundError):
         load_config()
+
+
+def test_general_config_defaults():
+    from pyra.config.schema import GeneralConfig
+    g = GeneralConfig()
+    assert g.user_name == "User"
+    assert g.assistant_name == "Pyra"
+
+
+def test_pyraconfig_has_general_and_plugin_settings():
+    cfg = PyraConfig(ai=ProviderConfig(provider_id="ollama", model="x"))
+    assert cfg.general.user_name == "User"
+    assert cfg.general.assistant_name == "Pyra"
+    assert cfg.plugin_settings == {}
+
+
+def test_config_round_trip_preserves_general(tmp_pyra_home):
+    from pyra.config.manager import save_config, load_config
+
+    cfg = PyraConfig(ai=ProviderConfig(provider_id="ollama", model="llama3"))
+    cfg.general.user_name = "Alice"
+    cfg.general.assistant_name = "Aria"
+    save_config(cfg)
+
+    loaded = load_config()
+    assert loaded.general.user_name == "Alice"
+    assert loaded.general.assistant_name == "Aria"
+
+
+def test_config_round_trip_preserves_plugin_settings(tmp_pyra_home):
+    from pyra.config.manager import save_config, load_config
+
+    cfg = PyraConfig(ai=ProviderConfig(provider_id="ollama", model="llama3"))
+    cfg.plugin_settings["myplugin"] = {"api_url": "http://example.com", "verify_ssl": True}
+    save_config(cfg)
+
+    loaded = load_config()
+    assert loaded.plugin_settings["myplugin"]["api_url"] == "http://example.com"
+    assert loaded.plugin_settings["myplugin"]["verify_ssl"] is True