feat: 重构知识库系统，移除Hermes集成，增强RAG和同步功能

主要变更:
- 移除Hermes智能体及相关回调服务
- 新增知识库RAG、同步、调度、规范化和索引任务服务
- 重构orchestrator服务，增强运行时聊天功能
- 更新前端聊天、政策制度、设置等页面样式和逻辑
- 更新expense_claims和document_intelligence服务
- 删除llm_wiki相关服务和测试文件
- 更新docker-compose配置和启动脚本

.tmp/lightrag_inspect/lightrag_pkg/lightrag/api/runtime_validation.py

@@ -0,0 +1,128 @@
+"""Helpers for validating startup runtime expectations from `.env`."""
+
+from __future__ import annotations
+
+import os
+from dataclasses import dataclass
+from pathlib import Path
+
+from dotenv import dotenv_values
+
+_CONTAINER_RUNTIME_TARGETS = {"compose", "docker"}
+
+
+@dataclass(frozen=True)
+class RuntimeEnvironment:
+    """Describes whether the current process is running in a container runtime."""
+
+    in_container: bool
+    in_docker: bool
+    in_kubernetes: bool
+
+    @property
+    def label(self) -> str:
+        if self.in_kubernetes:
+            return "Kubernetes"
+        if self.in_docker:
+            return "Docker"
+        return "host"
+
+
+def _read_cgroup_content() -> str:
+    """Best-effort read of cgroup metadata for container detection."""
+
+    for candidate in ("/proc/1/cgroup", "/proc/self/cgroup"):
+        try:
+            return Path(candidate).read_text(encoding="utf-8")
+        except OSError:
+            continue
+    return ""
+
+
+def detect_runtime_environment(
+    environ: dict[str, str] | None = None,
+) -> RuntimeEnvironment:
+    """Detect whether the current process is running on host, Docker, or Kubernetes."""
+
+    environ = environ or os.environ
+    cgroup_content = _read_cgroup_content().lower()
+
+    in_kubernetes = bool(
+        environ.get("KUBERNETES_SERVICE_HOST")
+        or Path("/var/run/secrets/kubernetes.io/serviceaccount").exists()
+        or "kubepods" in cgroup_content
+        or "kubernetes" in cgroup_content
+    )
+    in_docker = bool(
+        Path("/.dockerenv").exists()
+        or Path("/run/.containerenv").exists()
+        or any(
+            marker in cgroup_content
+            for marker in ("docker", "containerd", "libpod", "podman")
+        )
+    )
+
+    return RuntimeEnvironment(
+        in_container=in_kubernetes or in_docker,
+        in_docker=in_docker,
+        in_kubernetes=in_kubernetes,
+    )
+
+
+def load_runtime_target_from_env_file(env_path: str | Path = ".env") -> str | None:
+    """Return the raw LIGHTRAG_RUNTIME_TARGET value from the `.env` file, if present."""
+
+    env_values = dotenv_values(str(env_path))
+    runtime_target = env_values.get("LIGHTRAG_RUNTIME_TARGET")
+    if runtime_target is None:
+        return None
+    return runtime_target.strip()
+
+
+def validate_runtime_target(
+    runtime_target: str | None,
+    runtime_environment: RuntimeEnvironment | None = None,
+) -> tuple[bool, str | None]:
+    """Validate `.env` runtime target against the current runtime environment."""
+
+    if runtime_target is None:
+        return True, None
+
+    normalized_target = runtime_target.strip().lower()
+    runtime_environment = runtime_environment or detect_runtime_environment()
+
+    if normalized_target == "host":
+        if runtime_environment.in_container:
+            return (
+                False,
+                "Configuration error in .env: LIGHTRAG_RUNTIME_TARGET=host.\n"
+                "This value from .env requires the server process to run on the host, "
+                f"but the current process is running inside {runtime_environment.label}.",
+            )
+        return True, None
+
+    if normalized_target in _CONTAINER_RUNTIME_TARGETS:
+        if runtime_environment.in_container:
+            return True, None
+        return (
+            False,
+            f"Configuration error in .env: LIGHTRAG_RUNTIME_TARGET={runtime_target}.\n"
+            "This value from .env requires the server process to run inside Docker or "
+            "Kubernetes, but the current process is running on the host.",
+        )
+
+    return (
+        False,
+        f"Configuration error in .env: LIGHTRAG_RUNTIME_TARGET={runtime_target!r}.\n"
+        "This value from .env must be 'host' or 'compose' (alias: 'docker').",
+    )
+
+
+def validate_runtime_target_from_env_file(
+    env_path: str | Path = ".env",
+    runtime_environment: RuntimeEnvironment | None = None,
+) -> tuple[bool, str | None]:
+    """Load LIGHTRAG_RUNTIME_TARGET from `.env` and validate it if declared."""
+
+    runtime_target = load_runtime_target_from_env_file(env_path)
+    return validate_runtime_target(runtime_target, runtime_environment)