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/agents/base/evo_agent.py

@@ -126,6 +126,8 @@ class EvoAgent(ToolGuardMixin, ReActAgent):
         self.agent_id = agent_id
         self.config_name = config_name
         self.workspace_dir = Path(workspace_dir)
+        self.workspace_id = config_name
+        self.config = {"config_name": config_name}
         self._skills_manager = skills_manager or SkillsManager()
         self._env_context = env_context
         self._prompt_files = prompt_files
@@ -328,6 +330,17 @@ class EvoAgent(ToolGuardMixin, ReActAgent):
         # Call parent (which may be ToolGuardMixin's _reasoning)
         return await super()._reasoning(**kwargs)
 
+    def reload_runtime_assets(self, active_skill_dirs: Optional[List[Path]] = None) -> None:
+        """Reload toolkit and system prompt from current run assets.
+
+        Refreshes prompt files from workspace config and rebuilds the toolkit.
+        """
+        # Rebuild system prompt (also refreshes _agent_config and _prompt_files)
+        self.rebuild_sys_prompt()
+
+        # Reload skills/toolkit
+        self.reload_skills(active_skill_dirs=active_skill_dirs)
+
     def reload_skills(self, active_skill_dirs: Optional[List[Path]] = None) -> None:
         """Reload skills at runtime.
 
@@ -497,6 +510,10 @@ class EvoAgent(ToolGuardMixin, ReActAgent):
         # Reload agent config in case it changed
         self._agent_config = self._load_agent_config()
 
+        # Refresh prompt_files from updated config
+        if "prompt_files" in self._agent_config:
+            self._prompt_files = list(self._agent_config["prompt_files"])
+
         # Rebuild prompt
         self._sys_prompt = self._build_system_prompt()