refactor(cleanup): remove legacy CLI and complete EvoAgent migration cleanup

- Delete backend/cli.py and all CLI-specific tests (test_cli.py,
  test_openclaw_cli_service.py, test_skills_cli.py)
- Remove evotraders console script from pyproject.toml
- Update README/CLAUDE.md to reference python backend/main.py instead of CLI
- Add pytest-asyncio to dev dependencies
- Enhance EvoAgent with reload_runtime_assets and backward-compat attrs
- Align tests with updated API semantics and gateway process models

Constraint: CLI is deprecated in favor of split-service runtime model
Confidence: high
Scope-risk: moderate

backend/tests/test_agent_service_app.py

@@ -38,7 +38,7 @@ def test_agent_service_status_includes_scope_metadata(tmp_path):
     payload = response.json()
     assert payload["scope"]["design_time_registry"]["root"] == str(tmp_path / "workspaces")
     assert payload["scope"]["runtime_assets"]["root"] == str(tmp_path / "runs")
-    assert "runs/<run_id>" in payload["scope"]["agent_route_note"]
+    assert "runs/{run_id}" in payload["scope"]["agent_route_note"]
 
 
 def test_agent_service_read_routes(monkeypatch, tmp_path):