Fix: clarification bugs - max rounds, locale passing, and over-clarification (#647)

Fixes: Max rounds bug, locale passing bug, over-clarification issue

* reslove Copilot spelling comments

---------

Co-authored-by: Willem Jiang <willem.jiang@gmail.com>

src/graph/types.py

@@ -16,7 +16,9 @@ class State(MessagesState):
     # Runtime Variables
     locale: str = "en-US"
     research_topic: str = ""
-    clarified_research_topic: str = ""
+    clarified_research_topic: str = (
+        ""  # Complete/final clarified topic with all clarification rounds
+    )
     observations: list[str] = []
     resources: list[Resource] = []
     plan_iterations: int = 0
@@ -33,7 +35,6 @@ class State(MessagesState):
     clarification_rounds: int = 0
     clarification_history: list[str] = field(default_factory=list)
     is_clarification_complete: bool = False
-    clarified_question: str = ""
     max_clarification_rounds: int = (
         3  # Default: 3 rounds (only used when enable_clarification=True)
     )