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/constants.py

@@ -0,0 +1,113 @@
+"""
+Centralized configuration constants for LightRAG.
+
+This module defines default values for configuration constants used across
+different parts of the LightRAG system. Centralizing these values ensures
+consistency and makes maintenance easier.
+"""
+
+# Default values for server settings
+DEFAULT_WOKERS = 2
+DEFAULT_MAX_GRAPH_NODES = 1000
+
+# Default values for extraction settings
+DEFAULT_SUMMARY_LANGUAGE = "English"  # Default language for document processing
+DEFAULT_MAX_GLEANING = 1
+DEFAULT_ENTITY_NAME_MAX_LENGTH = 256
+
+# Number of description fragments to trigger LLM summary
+DEFAULT_FORCE_LLM_SUMMARY_ON_MERGE = 8
+# Max description token size to trigger LLM summary
+DEFAULT_SUMMARY_MAX_TOKENS = 1200
+# Recommended LLM summary output length in tokens
+DEFAULT_SUMMARY_LENGTH_RECOMMENDED = 600
+# Maximum token size sent to LLM for summary
+DEFAULT_SUMMARY_CONTEXT_SIZE = 12000
+# Maximum token size allowed for entity extraction input context
+DEFAULT_MAX_EXTRACT_INPUT_TOKENS = 20480
+# Default entities to extract if ENTITY_TYPES is not specified in .env
+DEFAULT_ENTITY_TYPES = [
+    "Person",
+    "Creature",
+    "Organization",
+    "Location",
+    "Event",
+    "Concept",
+    "Method",
+    "Content",
+    "Data",
+    "Artifact",
+    "NaturalObject",
+]
+
+# Separator for: description, source_id and relation-key fields(Can not be changed after data inserted)
+GRAPH_FIELD_SEP = "<SEP>"
+
+# Query and retrieval configuration defaults
+DEFAULT_TOP_K = 40
+DEFAULT_CHUNK_TOP_K = 20
+DEFAULT_MAX_ENTITY_TOKENS = 6000
+DEFAULT_MAX_RELATION_TOKENS = 8000
+DEFAULT_MAX_TOTAL_TOKENS = 30000
+DEFAULT_COSINE_THRESHOLD = 0.2
+DEFAULT_RELATED_CHUNK_NUMBER = 5
+DEFAULT_KG_CHUNK_PICK_METHOD = "VECTOR"
+
+# TODO: Deprated. All conversation_history messages is send to LLM.
+DEFAULT_HISTORY_TURNS = 0
+
+# Rerank configuration defaults
+DEFAULT_MIN_RERANK_SCORE = 0.0
+DEFAULT_RERANK_BINDING = "null"
+
+# Default source ids limit in meta data for entity and relation
+DEFAULT_MAX_SOURCE_IDS_PER_ENTITY = 300
+DEFAULT_MAX_SOURCE_IDS_PER_RELATION = 300
+### control chunk_ids limitation method: FIFO, FIFO
+###    FIFO: First in first out
+###    KEEP: Keep oldest (less merge action and faster)
+SOURCE_IDS_LIMIT_METHOD_KEEP = "KEEP"
+SOURCE_IDS_LIMIT_METHOD_FIFO = "FIFO"
+DEFAULT_SOURCE_IDS_LIMIT_METHOD = SOURCE_IDS_LIMIT_METHOD_FIFO
+VALID_SOURCE_IDS_LIMIT_METHODS = {
+    SOURCE_IDS_LIMIT_METHOD_KEEP,
+    SOURCE_IDS_LIMIT_METHOD_FIFO,
+}
+# Maximum number of file paths stored in entity/relation file_path field (For displayed only, does not affect query performance)
+DEFAULT_MAX_FILE_PATHS = 100
+
+# Field length of file_path in Milvus Schema for entity and relation (Should not be changed)
+# file_path must store all file paths up to the DEFAULT_MAX_FILE_PATHS limit within the metadata.
+DEFAULT_MAX_FILE_PATH_LENGTH = 32768
+# Placeholder for more file paths in meta data for entity and relation (Should not be changed)
+DEFAULT_FILE_PATH_MORE_PLACEHOLDER = "truncated"
+
+# Default temperature for LLM
+DEFAULT_TEMPERATURE = 1.0
+
+# Async configuration defaults
+DEFAULT_MAX_ASYNC = 4  # Default maximum async operations
+DEFAULT_MAX_PARALLEL_INSERT = 2  # Default maximum parallel insert operations
+
+# Embedding configuration defaults
+DEFAULT_EMBEDDING_FUNC_MAX_ASYNC = 8  # Default max async for embedding functions
+DEFAULT_EMBEDDING_BATCH_NUM = 10  # Default batch size for embedding computations
+
+# Gunicorn worker timeout
+DEFAULT_TIMEOUT = 300
+
+# Default llm and embedding timeout
+DEFAULT_LLM_TIMEOUT = 180
+DEFAULT_EMBEDDING_TIMEOUT = 30
+
+# Logging configuration defaults
+DEFAULT_LOG_MAX_BYTES = 10485760  # Default 10MB
+DEFAULT_LOG_BACKUP_COUNT = 5  # Default 5 backups
+DEFAULT_LOG_FILENAME = "lightrag.log"  # Default log filename
+
+# Ollama server configuration defaults
+DEFAULT_OLLAMA_MODEL_NAME = "lightrag"
+DEFAULT_OLLAMA_MODEL_TAG = "latest"
+DEFAULT_OLLAMA_MODEL_SIZE = 7365960935
+DEFAULT_OLLAMA_CREATED_AT = "2024-01-15T00:00:00Z"
+DEFAULT_OLLAMA_DIGEST = "sha256:lightrag"