Merge optimization changes into main

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

backend/app/services/task_manager.py

@@ -40,7 +40,7 @@ class HybridTaskManager:
         self._lock = threading.RLock()
         self._cleanup_interval = 3600  # 1 hour
         self._task_expiry = 86400  # 24 hours for pending/running tasks
-        self._completed_task_expiry = 3600  # 1 hour for completed/failed tasks (auto cleanup)
+        self._completed_task_expiry = 14400  # 4 hours for completed/failed tasks (auto cleanup) — give users time to save reports
         
         # Check Redis availability on startup
         if is_redis_available():

tradingagents/agents/utils/output_filter.py

@@ -80,12 +80,12 @@ def validate_and_warn(content: str, agent_name: str) -> list:
             context = content[max(0, idx-15):min(len(content), idx+15)]
             warnings.append(f"Suspicious '煉' character found. Context: ...{context}...")
     
-    # Check word count
+    # Check word count (500-1000 range)
     word_count = count_chinese_words(content)
-    if word_count < 800:
-        warnings.append(f"Too short: {word_count} words (expected 800-1500)")
-    elif word_count > 1500:
-        warnings.append(f"Too long: {word_count} words (expected 800-1500)")
+    if word_count < 500:
+        warnings.append(f"⚠️  Report too short (below 500 words)")
+    elif word_count > 1000:
+        warnings.append(f"⚠️  Report too long (exceeds 1000 words)")
     
     # Check for truncation markers that shouldn't be there
     truncation_markers = ['...(已截斷)', '...(內容已截斷)', '...(為控制長度已精簡)']
@@ -119,37 +119,38 @@ def post_process_agent_output(content: str, agent_name: str, retry_callback=None
     # Step 2: Validate and warn
     warnings = validate_and_warn(content, agent_name)
     
-    # Step 3: Critical validation - retry if needed
+    # Step 3: Critical validation - retry if needed (500-1000 range)
     word_count = count_chinese_words(content)
-    if (word_count < 800 or word_count > 1500) and retry_callback:
-        print(f"\n🔄 {agent_name}: Word count {word_count} out of range, triggering retry...")
+    if (word_count < 500 or word_count > 1000) and retry_callback:
+        print(f"\n🔄 {agent_name}: Word count out of range, triggering retry...")
         # Callback should regenerate the content
         # This is optional and should be implemented in the calling code
     
     return content
 
 
-def ensure_min_length(content: str, min_words: int = 800, agent_name: str = "Agent") -> tuple:
+def ensure_min_length(content: str, min_words: int = 500, agent_name: str = "Agent") -> tuple:
     """
-    確保報告達到最小字數，如果不夠則返回False觸發重試
-    
+    確保報告達到字數要求範圍 (500-1000)，如果不符合則返回False觸發重試
+
     Args:
         content: The report content to check
-        min_words: Minimum required word count (default: 800)
+        min_words: Minimum required word count (default: 500)
         agent_name: Name of the agent for logging
-        
+
     Returns:
         tuple: (content, is_valid: bool)
     """
     word_count = count_chinese_words(content)
-    
+    max_words = 1000
+
     if word_count < min_words:
-        print(f"⚠️  [{agent_name}] 報告字數不足: {word_count}字 < {min_words}字最低要求")
+        print(f"⚠️  [{agent_name}] Report too short")
         return content, False
-    elif word_count > 1500:
-        print(f"⚠️  [{agent_name}] 報告字數過多: {word_count}字 > 1500字上限")
+    elif word_count > max_words:
+        print(f"⚠️  [{agent_name}] Report too long")
         return content, False
     else:
-        print(f"✅ [{agent_name}] 報告字數符合要求: {word_count}字")
+        print(f"✅ [{agent_name}] Report meets requirements")
         return content, True
 

tradingagents/agents/utils/prompts.py

@@ -92,13 +92,13 @@ You are a senior technical analyst responsible for providing precise market tech
 • Integrate data to provide professional insights
 
 【Report Structure】
-**Word Count**: 800-1500 words (excluding tables)
+**Word Count**: 500-1000 words (excluding tables)
 
 **Content Structure**:
-1. Market Overview (120-150 words): Trend direction and momentum
-2. Technical Analysis (400-600 words): Indicator interpretation and cross-validation
-3. Key Price Levels (80-120 words): Support/resistance and their significance
-4. Trading Strategy (150-200 words): Entry points, stop-loss, target prices
+1. Market Overview (60-80 words): Trend direction and momentum
+2. Technical Analysis (250-350 words): Indicator interpretation and cross-validation
+3. Key Price Levels (50-70 words): Support/resistance and their significance
+4. Trading Strategy (100-150 words): Entry points, stop-loss, target prices
 5. Data Summary Table (required)
 
 **Closing**:
@@ -123,13 +123,13 @@ Please provide a professional, precise, and actionable technical analysis report
 • 整合數據後提出專業見解
 
 【報告架構】
-**字數要求**：800-1500字（不含表格）
+**字數要求**：500-1000字（不含表格）
 
 **內容結構**：
-1. 市場概況（120-150字）：趨勢方向與動能強弱
-2. 技術分析（400-600字）：指標解讀與相互驗證
-3. 關鍵價位（80-120字）：支撐/壓力位及其技術意義
-4. 操作策略（150-200字）：進場點位、停損設定、目標價位
+1. 市場概況（60-80字）：趨勢方向與動能強弱
+2. 技術分析（250-350字）：指標解讀與相互驗證
+3. 關鍵價位（50-70字）：支撐/壓力位及其技術意義
+4. 操作策略（100-150字）：進場點位、停損設定、目標價位
 5. 數據摘要表格（必須）
 
 **結尾提示**：
@@ -165,10 +165,10 @@ You are a fundamentals analyst responsible for evaluating company financial heal
 • Integrate data for comprehensive evaluation
 
 【Report Structure】
-**Word Count**: 800-1500 words (excluding tables)
+**Word Count**: 500-1000 words (excluding tables)
 
 **Content Structure**:
-1. Company Overview (150+ words): Business characteristics and competitive position
+1. Company Overview (80-100 words): Business characteristics and competitive position
 2. Financial Analysis (400-450 words): Profitability, financial structure, cash flow
 3. Valuation Assessment (100+ words): Price valuation level and investment value
 4. Investment Recommendation (150+ words): Fundamental-based trading suggestions
@@ -196,13 +196,13 @@ Please provide a professional and comprehensive fundamental analysis report with
 • 整合數據進行綜合評估
 
 【報告架構】
-**字數要求**：800-1500字（不含表格）
+**字數要求**：500-1000字（不含表格）
 
 **內容結構**：
-1. 公司概述（150字以上）：業務特性與競爭地位
-2. 財務分析（400-450字）：獲利能力、財務結構、現金流分析
-3. 估值研判（100字以上）：股價評價水準與投資價值
-4. 投資建議（150字以上）：基於基本面的操作建議
+1. 公司概述（80-100字）：業務特性與競爭地位
+2. 財務分析（250-300字）：獲利能力、財務結構、現金流分析
+3. 估值研判（60-80字）：股價評價水準與投資價值
+4. 投資建議（100-120字）：基於基本面的操作建議
 5. 財務數據表格（必須）
 
 **結尾提示**：
@@ -237,10 +237,10 @@ You are a market sentiment analyst responsible for interpreting social media and
 • Analyze sentiment trends and discussion intensity
 
 【Report Structure】
-**Word Count**: 800-1500 words (excluding tables)
+**Word Count**: 500-1000 words (excluding tables)
 
 **Content Structure**:
-1. Sentiment Summary (150+ words): Market atmosphere and sentiment indicators
+1. Sentiment Summary (80-100 words): Market atmosphere and sentiment indicators
 2. Opinion Analysis (400-450 words): Main discussion topics and opinion distribution
 3. Key Insights (100+ words): Sentiment extremes or turning signals
 4. Investment Implications (150+ words): Sentiment-based trading strategy insights
@@ -267,10 +267,10 @@ Please provide a professional and insightful market sentiment analysis report wi
 • 分析輿情傾向與討論熱度
 
 【報告架構】
-**字數要求**：800-1500字（不含表格）
+**字數要求**：500-1000字（不含表格）
 
 **內容結構**：
-1. 情緒概要（150字以上）：市場氛圍與情緒指標
+1. 情緒概要（80-100字）：市場氛圍與情緒指標
 2. 輿情分析（400-450字）：主要討論議題與觀點分布
 3. 關鍵洞察（100字以上）：情緒極值或轉折訊號
 4. 投資含義（150字以上）：情緒面對操作策略的啟示
@@ -309,10 +309,10 @@ You are a financial news analyst responsible for interpreting major events' impa
 • Filter high-value information and provide deep interpretation
 
 【Report Structure】
-**Word Count**: 800-1500 words (excluding tables)
+**Word Count**: 500-1000 words (excluding tables)
 
 **Content Structure**:
-1. News Summary (120-150 words): Key event overview
+1. News Summary (60-80 words): Key event overview
 2. Impact Analysis (400-600 words): Multi-dimensional impact assessment on stock price
 3. Risk Alerts (80-120 words): Potential risks or overlooked factors
 4. Trading Suggestions (150-200 words): News-based investment strategy
@@ -340,10 +340,10 @@ Please provide a professional and insightful news analysis report with a Markdow
 • 篩選高價值資訊並進行深度解讀
 
 【報告架構】
-**字數要求**：800-1500字（不含表格）
+**字數要求**：500-1000字（不含表格）
 
 **內容結構**：
-1. 新聞摘要（120-150字）：重點事件概述
+1. 新聞摘要（60-80字）：重點事件概述
 2. 影響分析（400-600字）：事件對股價的多維度影響評估
 3. 風險提示（80-120字）：潛在風險或市場未注意的因素
 4. 操作建議（150-200字）：基於新聞面的投資策略