feat: RAG Integration (#238)

* feat: add rag provider and retriever

* feat: retriever tool

* feat: add retriever tool to the researcher node

* feat: add rag http apis

* feat: new message input supports resource mentions

* feat: new message input component support resource mentions

* refactor: need_web_search to need_search

* chore: RAG integration docs

* chore: change example api host

* fix: user message color in dark mode

* fix: mentions style

* feat: add local_search_tool to researcher prompt

* chore: research prompt

* fix: ragflow page size and reporter with

* docs: ragflow integration and add acknowledgment projects

* chore: format

src/prompts/planner_model.py

@@ -13,9 +13,7 @@ class StepType(str, Enum):
 
 
 class Step(BaseModel):
-    need_web_search: bool = Field(
-        ..., description="Must be explicitly set for each step"
-    )
+    need_search: bool = Field(..., description="Must be explicitly set for each step")
     title: str
     description: str = Field(..., description="Specify exactly what data to collect")
     step_type: StepType = Field(..., description="Indicates the nature of the step")
@@ -47,7 +45,7 @@ class Plan(BaseModel):
                     "title": "AI Market Research Plan",
                     "steps": [
                         {
-                            "need_web_search": True,
+                            "need_search": True,
                             "title": "Current AI Market Analysis",
                             "description": (
                                 "Collect data on market size, growth rates, major players, and investment trends in AI sector."