feat: agent platform initial commit

- FastAPI + HTMX UI: dashboard, agents CRUD, chat, audit, tools
- SQLite schema: agents, conversations, messages, audit, sessions
- Code-agent sync (agents/*.py -> DB on startup)
- MCP client with health check
- Token auth (Bearer + session)
- LiteLLM integration via llm.py
- Docker Compose: agent-platform + mcp-tools services
- Smoke tests pass: /health 200, /api/agents 200, / 401

agent_platform/agents/__init__.py

@@ -0,0 +1,54 @@
+"""Agent-Loader: scannt agents/ Ordner und lädt alle BaseAgent-Subklassen."""
+import importlib
+import inspect
+import logging
+from pathlib import Path
+from typing import Dict, List
+
+from agents.base import BaseAgent, AgentConfig
+
+
+logger = logging.getLogger("agents.loader")
+
+
+def discover_agents() -> Dict[str, BaseAgent]:
+    """Scannt das agents/ Verzeichnis und gibt alle Agent-Instanzen zurück."""
+    agents: Dict[str, BaseAgent] = {}
+    agents_dir = Path(__file__).parent
+
+    for py_file in agents_dir.glob("*.py"):
+        if py_file.name.startswith("_") or py_file.name in ("base.py", "__init__.py"):
+            continue
+        module_name = f"agents.{py_file.stem}"
+        try:
+            module = importlib.import_module(module_name)
+        except Exception as e:
+            logger.warning(f"Konnte {module_name} nicht laden: {e}")
+            continue
+
+        for name, obj in inspect.getmembers(module, inspect.isclass):
+            if obj is BaseAgent:
+                continue
+            if issubclass(obj, BaseAgent) and obj.__module__ == module_name:
+                try:
+                    instance = obj()
+                    if hasattr(instance, "config"):
+                        agents[instance.config.id] = instance
+                        logger.info(f"Agent geladen: {instance.config.id} ({instance.config.name})")
+                except Exception as e:
+                    logger.warning(f"Konnte Agent {name} aus {module_name} nicht instanziieren: {e}")
+
+    return agents
+
+
+def get_agent(agent_id: str) -> BaseAgent:
+    """Holt einen Agent by ID."""
+    agents = discover_agents()
+    if agent_id not in agents:
+        raise KeyError(f"Agent '{agent_id}' nicht gefunden. Verfügbar: {list(agents.keys())}")
+    return agents[agent_id]
+
+
+def list_agents() -> List[AgentConfig]:
+    """Gibt Configs aller Agents zurück."""
+    return [a.config for a in discover_agents().values()]