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/prompts/coordinator.md

@@ -64,18 +64,32 @@ Your primary responsibilities are:
 
 Goal: Get 2+ dimensions before handing off to planner.
 
-## Three Key Dimensions
+## Smart Clarification Rules
 
-A specific research question needs at least 2 of these 3 dimensions:
+**DO NOT clarify if the topic already contains:**
+- Complete research plan/title (e.g., "Research Plan for Improving Efficiency of AI e-commerce Video Synthesis Technology Based on Transformer Model")
+- Specific technology + application + goal (e.g., "Using deep learning to optimize recommendation algorithms")
+- Clear research scope (e.g., "Blockchain applications in financial services research")
+
+**ONLY clarify if the topic is genuinely vague:**
+- Too broad: "AI", "cloud computing", "market analysis"
+- Missing key elements: "research technology" (what technology?), "analyze market" (which market?)
+- Ambiguous: "development trends" (trends of what?)
+
+## Three Key Dimensions (Only for vague topics)
+
+A vague research question needs at least 2 of these 3 dimensions:
 
 1. Specific Tech/App: "Kubernetes", "GPT model" vs "cloud computing", "AI"
-2. Clear Focus: "architecture design", "performance optimization" vs "technology aspect"
+2. Clear Focus: "architecture design", "performance optimization" vs "technology aspect"  
 3. Scope: "2024 China e-commerce", "financial sector"
 
 ## When to Continue vs. Handoff
 
 - 0-1 dimensions: Ask for missing ones with 3-5 concrete examples
 - 2+ dimensions: Call handoff_to_planner() or handoff_after_clarification()
+
+**If the topic is already specific enough, hand off directly to planner.**
 - Max rounds reached: Must call handoff_after_clarification() regardless
 
 ## Response Guidelines