test: add comprehensive coverage for cli, chat, renderer, dirs, install, paths

56 new tests covering previously untested modules:
- test_cli.py: memory write/read/append/list + plugin enable/disable + daemon stubs (via CliRunner)
- test_chat_history.py: ConversationHistory build_for_api, add_*/clear, _trim_to_budget
- test_chat_renderer.py: render_text_response return values, void render_* functions
- test_config_dirs.py: bootstrap idempotency, directory/template/vault/db creation
- test_plugin_install.py: list_bundled_plugins, read_manifest, install_bundled_plugin
- test_utils_paths.py: ensure_dir (nested, idempotent), safe_chmod

Total: 171 → 227 passing tests.

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

tests/unit/test_cli.py

@@ -0,0 +1,109 @@
+import pytest
+from click.testing import CliRunner
+
+from pyra.cli import main
+
+
+def test_memory_write_creates_file(tmp_pyra_home):
+    runner = CliRunner()
+    result = runner.invoke(main, ["memory", "write", "user/note.md", "Hello world"])
+    assert result.exit_code == 0
+    assert (tmp_pyra_home / "memory" / "user" / "note.md").exists()
+    assert "Hello world" in (tmp_pyra_home / "memory" / "user" / "note.md").read_text()
+
+
+def test_memory_write_updates_db(tmp_pyra_home):
+    runner = CliRunner()
+    runner.invoke(main, ["memory", "write", "user/note.md", "DB test content"])
+    from pyra.memory import database
+    rows = database.list_all()
+    assert any(r["path"] == "user/note.md" for r in rows)
+
+
+def test_memory_append_adds_content(tmp_pyra_home):
+    runner = CliRunner()
+    runner.invoke(main, ["memory", "write", "user/note.md", "First line"])
+    runner.invoke(main, ["memory", "append", "user/note.md", "Second line"])
+    content = (tmp_pyra_home / "memory" / "user" / "note.md").read_text()
+    assert "First line" in content
+    assert "Second line" in content
+
+
+def test_memory_read_existing(tmp_pyra_home):
+    from pyra.memory.writer import write_memory
+    write_memory("user/note.md", "Readable content")
+    runner = CliRunner()
+    result = runner.invoke(main, ["memory", "read", "user/note.md"])
+    assert result.exit_code == 0
+
+
+def test_memory_read_missing_exits_cleanly(tmp_pyra_home):
+    runner = CliRunner()
+    result = runner.invoke(main, ["memory", "read", "user/does_not_exist.md"])
+    assert result.exit_code == 0
+
+
+def test_memory_read_blocked_path_exits_cleanly(tmp_pyra_home):
+    runner = CliRunner()
+    result = runner.invoke(main, ["memory", "read", "../../../../vault/secrets/api_keys.json"])
+    assert result.exit_code == 0
+
+
+def test_memory_list_empty(tmp_pyra_home):
+    runner = CliRunner()
+    result = runner.invoke(main, ["memory", "list"])
+    assert result.exit_code == 0
+
+
+def test_memory_list_populated(tmp_pyra_home):
+    from pyra.memory.writer import write_memory
+    write_memory("user/profile.md", "# Profile")
+    runner = CliRunner()
+    result = runner.invoke(main, ["memory", "list"])
+    assert result.exit_code == 0
+
+
+def test_plugin_list_no_config(tmp_pyra_home):
+    runner = CliRunner()
+    result = runner.invoke(main, ["plugin", "list"])
+    assert result.exit_code == 0
+
+
+def _make_config():
+    from pyra.config.schema import PyraConfig, ProviderConfig
+    return PyraConfig(ai=ProviderConfig(provider_id="lmstudio", model="gemma"))
+
+
+def test_plugin_enable_not_installed(tmp_pyra_home):
+    from pyra.config.manager import save_config
+    save_config(_make_config())
+    runner = CliRunner()
+    result = runner.invoke(main, ["plugin", "enable", "nonexistent"])
+    assert result.exit_code == 0
+
+
+def test_plugin_enable_and_disable(tmp_pyra_home):
+    from pyra.config.manager import load_config, save_config
+
+    save_config(_make_config())
+
+    plugin_dir = tmp_pyra_home / "plugins" / "myplugin"
+    plugin_dir.mkdir(parents=True, exist_ok=True)
+    (plugin_dir / "manifest.json").write_text('{"name": "myplugin", "version": "1.0"}')
+
+    runner = CliRunner()
+
+    runner.invoke(main, ["plugin", "enable", "myplugin"])
+    cfg = load_config()
+    assert "myplugin" in cfg.plugins.enabled
+
+    runner.invoke(main, ["plugin", "disable", "myplugin"])
+    cfg = load_config()
+    assert "myplugin" not in cfg.plugins.enabled
+
+
+def test_daemon_commands_exit_cleanly(tmp_pyra_home):
+    runner = CliRunner()
+    for cmd in ["start", "stop", "status", "restart"]:
+        result = runner.invoke(main, ["daemon", cmd])
+        assert result.exit_code == 0, f"daemon {cmd} exited with {result.exit_code}"