feat: add AI学习助手 agent (KG+RAG ideal) and renshenguo feishu bot

- Add AI学习助手 agent creation script with all 39 tools, 3-layer KG+RAG memory
- Add renshenguo (人参果) feishu bot integration (app_service + ws_handler)
- Register renshenguo WS client in main.py startup
- Add RENSHENGUO_APP_ID / RENSHENGUO_APP_SECRET / RENSHENGUO_AGENT_ID config
- Reorganize docs from root into docs/ subdirectories
- Move startup scripts to scripts/startup/
- Various backend optimizations and tool improvements

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/app/core/config.py

@@ -110,6 +110,11 @@ class Settings(BaseSettings):
     LINGXI_APP_SECRET: str = ""
     LINGXI_AGENT_ID: str = ""  # 创建灵犀后写入
 
+    # 人参果飞书应用配置（独立 WS 连接，路由到 AI学习助手 Agent — KG+RAG理想版）
+    RENSHENGUO_APP_ID: str = ""
+    RENSHENGUO_APP_SECRET: str = ""
+    RENSHENGUO_AGENT_ID: str = ""  # 创建 AI学习助手 后写入
+
     class Config:
         env_file = str(_ENV_PATH)
         case_sensitive = True

backend/app/core/tools_bootstrap.py

@@ -8,7 +8,7 @@ logger = logging.getLogger(__name__)
 
 _registered = False
 
-_EXPECTED_BUILTIN = 35
+_EXPECTED_BUILTIN = 39
 
 
 def ensure_builtin_tools_registered() -> None:
@@ -53,6 +53,10 @@ def ensure_builtin_tools_registered() -> None:
         code_tool_create_tool,
         extension_log_tool,
         self_review_tool,
+        knowledge_graph_search_tool,
+        knowledge_graph_add_tool,
+        entity_search_tool,
+        learning_path_tool,
         HTTP_REQUEST_SCHEMA,
         FILE_READ_SCHEMA,
         FILE_WRITE_SCHEMA,
@@ -88,6 +92,10 @@ def ensure_builtin_tools_registered() -> None:
         CODE_TOOL_CREATE_SCHEMA,
         EXTENSION_LOG_SCHEMA,
         SELF_REVIEW_SCHEMA,
+        KNOWLEDGE_GRAPH_SEARCH_SCHEMA,
+        KNOWLEDGE_GRAPH_ADD_SCHEMA,
+        ENTITY_SEARCH_SCHEMA,
+        LEARNING_PATH_SCHEMA,
     )
 
     tool_registry.register_builtin_tool("http_request", http_request_tool, HTTP_REQUEST_SCHEMA)
@@ -125,6 +133,10 @@ def ensure_builtin_tools_registered() -> None:
     tool_registry.register_builtin_tool("code_tool_create", code_tool_create_tool, CODE_TOOL_CREATE_SCHEMA)
     tool_registry.register_builtin_tool("extension_log", extension_log_tool, EXTENSION_LOG_SCHEMA)
     tool_registry.register_builtin_tool("self_review", self_review_tool, SELF_REVIEW_SCHEMA)
+    tool_registry.register_builtin_tool("knowledge_graph_search", knowledge_graph_search_tool, KNOWLEDGE_GRAPH_SEARCH_SCHEMA)
+    tool_registry.register_builtin_tool("knowledge_graph_add", knowledge_graph_add_tool, KNOWLEDGE_GRAPH_ADD_SCHEMA)
+    tool_registry.register_builtin_tool("entity_search", entity_search_tool, ENTITY_SEARCH_SCHEMA)
+    tool_registry.register_builtin_tool("learning_path", learning_path_tool, LEARNING_PATH_SCHEMA)
     _registered = True
 
     n = tool_registry.builtin_tool_count()