Initial commit: LogicStream Agent

.gitattributes

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+*.db filter=lfs diff=lfs merge=lfs -text
+*.sqlite filter=lfs diff=lfs merge=lfs -text

.gitignore

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+__pycache__/
+*.pyc
+.env
+instance/
+.DS_Store

Dockerfile

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+FROM python:3.9-slim
+
+WORKDIR /app
+
+# Install system dependencies if needed (e.g. for sqlite)
+# RUN apt-get update && apt-get install -y ...
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+# Ensure instance directory exists and is writable
+RUN mkdir -p instance && chmod 777 instance
+
+# Create a non-root user (recommended for Hugging Face Spaces)
+RUN useradd -m -u 1000 user
+# Switch to the new user
+USER user
+# Set home to the user's home directory
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH
+
+# Expose the port
+EXPOSE 7860
+
+# Run the application
+CMD ["python", "app.py"]

README.md

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+---
+title: Logic Stream Agent
+emoji: 🧠
+colorFrom: blue
+colorTo: indigo
+sdk: docker
+app_port: 7860
+short_description: 智能业务决策编排引擎 (Intelligent Business Decision Orchestration Engine)
+---
+
+# LogicStream - 智能业务决策编排引擎
+
+LogicStream 是一个可视化的业务逻辑编排 Agent，旨在帮助企业和个人构建、测试和部署基于 LLM 的复杂业务决策流。
+
+## 核心功能
+
+1.  **可视化工作流设计**：通过简单的步骤添加和配置，构建包含输入、AI 推理、逻辑判断的业务流。
+2.  **SiliconFlow 强力驱动**：集成 SiliconFlow API (Qwen/Qwen2.5-7B-Instruct)，提供强大的逻辑推理能力。
+3.  **资产积累**：将成功的业务逻辑保存为“资产”，可重复使用和迭代。
+4.  **实时运行监控**：详细的运行日志和结果预览，确保逻辑的可靠性。
+5.  **商业化潜力**：适用于市场分析、自动财报解读、法律文书生成、客户服务自动化等场景。
+
+## 快速开始
+
+### 本地运行
+
+1.  克隆仓库
+2.  安装依赖：
+    ```bash
+    pip install -r requirements.txt
+    ```
+3.  运行应用：
+    ```bash
+    python app.py
+    ```
+4.  打开浏览器访问：`http://localhost:7860`
+
+### Docker 运行
+
+```bash
+docker build -t logic-stream .
+docker run -p 7860:7860 logic-stream
+```
+
+## 技术栈
+
+- **Backend**: Python Flask, SQLite
+- **Frontend**: Vue.js 3, Tailwind CSS, ECharts
+- **AI**: SiliconFlow API
+
+## 开发者说明
+
+本项目专为商业化 SaaS 场景设计，强调“生产力”和“资产沉淀”。代码结构清晰，易于扩展。
+
+## 许可证
+
+MIT

app.py

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+import os
+import json
+import sqlite3
+import requests
+import datetime
+import uuid
+from flask import Flask, render_template, request, jsonify, send_from_directory
+from flask_cors import CORS
+
+app = Flask(__name__, static_folder='static', template_folder='templates')
+CORS(app)
+
+# Configuration
+SILICONFLOW_API_KEY = os.environ.get("SILICONFLOW_API_KEY", "sk-vimuseiptfbomzegyuvmebjzooncsqbyjtlddrfodzcdskgi")
+SILICONFLOW_API_URL = "https://api.siliconflow.cn/v1/chat/completions"
+DB_PATH = os.path.join(app.instance_path, "logic_stream.db")
+
+# Ensure instance folder exists
+os.makedirs(app.instance_path, exist_ok=True)
+
+# Database Initialization
+def init_db():
+    conn = sqlite3.connect(DB_PATH)
+    c = conn.cursor()
+    c.execute('''CREATE TABLE IF NOT EXISTS workflows
+                 (id TEXT PRIMARY KEY, name TEXT, description TEXT, steps TEXT, created_at TEXT, updated_at TEXT)''')
+    c.execute('''CREATE TABLE IF NOT EXISTS runs
+                 (id TEXT PRIMARY KEY, workflow_id TEXT, status TEXT, result TEXT, logs TEXT, created_at TEXT)''')
+    
+    # Check if empty, add default data
+    c.execute("SELECT count(*) FROM workflows")
+    if c.fetchone()[0] == 0:
+        default_workflow = {
+            "id": str(uuid.uuid4()),
+            "name": "市场趋势分析 (Market Trend Analysis)",
+            "description": "自动分析市场新闻并生成简报 (Auto-analyze market news and generate brief)",
+            "steps": json.dumps([
+                {"id": "step_1", "type": "input", "name": "输入主题", "content": "AI Agent 2025年发展趋势"},
+                {"id": "step_2", "type": "llm", "name": "深度分析", "prompt": "请分析以下主题的市场趋势和商业机会：{{step_1.output}}。输出 JSON 格式。"},
+                {"id": "step_3", "type": "llm", "name": "生成简报", "prompt": "根据以下分析生成一份简洁的投资简报：{{step_2.output}}"}
+            ]),
+            "created_at": datetime.datetime.now().isoformat(),
+            "updated_at": datetime.datetime.now().isoformat()
+        }
+        c.execute("INSERT INTO workflows VALUES (?, ?, ?, ?, ?, ?)", 
+                  (default_workflow["id"], default_workflow["name"], default_workflow["description"], 
+                   default_workflow["steps"], default_workflow["created_at"], default_workflow["updated_at"]))
+        conn.commit()
+        print("Default data initialized.")
+        
+    conn.commit()
+    conn.close()
+
+init_db()
+
+def get_db_connection():
+    conn = sqlite3.connect(DB_PATH)
+    conn.row_factory = sqlite3.Row
+    return conn
+
+# Routes
+@app.route('/')
+def index():
+    return render_template('index.html')
+
+@app.route('/api/workflows', methods=['GET'])
+def get_workflows():
+    conn = get_db_connection()
+    workflows = conn.execute('SELECT * FROM workflows ORDER BY updated_at DESC').fetchall()
+    conn.close()
+    return jsonify([dict(w) for w in workflows])
+
+@app.route('/api/workflows', methods=['POST'])
+def create_workflow():
+    data = request.json
+    workflow_id = str(uuid.uuid4())
+    now = datetime.datetime.now().isoformat()
+    conn = get_db_connection()
+    conn.execute('INSERT INTO workflows (id, name, description, steps, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?)',
+                 (workflow_id, data['name'], data.get('description', ''), json.dumps(data['steps']), now, now))
+    conn.commit()
+    conn.close()
+    return jsonify({"id": workflow_id, "status": "created"})
+
+@app.route('/api/workflows/<id>', methods=['PUT'])
+def update_workflow(id):
+    data = request.json
+    now = datetime.datetime.now().isoformat()
+    conn = get_db_connection()
+    conn.execute('UPDATE workflows SET name = ?, description = ?, steps = ?, updated_at = ? WHERE id = ?',
+                 (data['name'], data.get('description', ''), json.dumps(data['steps']), now, id))
+    conn.commit()
+    conn.close()
+    return jsonify({"status": "updated"})
+
+@app.route('/api/workflows/<id>', methods=['DELETE'])
+def delete_workflow(id):
+    conn = get_db_connection()
+    conn.execute('DELETE FROM workflows WHERE id = ?', (id,))
+    conn.commit()
+    conn.close()
+    return jsonify({"status": "deleted"})
+
+@app.route('/api/run_workflow', methods=['POST'])
+def run_workflow():
+    data = request.json
+    workflow_id = data.get('workflow_id')
+    steps = data.get('steps', [])
+    
+    # If workflow_id is provided, fetch steps from DB (optional, but here we assume frontend sends current steps)
+    
+    run_id = str(uuid.uuid4())
+    logs = []
+    context = {}
+    
+    try:
+        for step in steps:
+            step_id = step['id']
+            step_type = step['type']
+            step_name = step['name']
+            
+            logs.append({"timestamp": datetime.datetime.now().isoformat(), "level": "INFO", "message": f"Starting step: {step_name} ({step_type})"})
+            
+            output = ""
+            
+            if step_type == 'input':
+                output = step.get('content', '')
+                logs.append({"timestamp": datetime.datetime.now().isoformat(), "level": "SUCCESS", "message": f"Input received: {output[:50]}..."})
+                
+            elif step_type == 'llm':
+                prompt_template = step.get('prompt', '')
+                # Simple variable substitution {{step_id.output}}
+                prompt = prompt_template
+                for prev_step_id, prev_output in context.items():
+                    prompt = prompt.replace(f"{{{{{prev_step_id}.output}}}}", str(prev_output))
+                
+                logs.append({"timestamp": datetime.datetime.now().isoformat(), "level": "INFO", "message": f"Calling LLM with prompt: {prompt[:50]}..."})
+                
+                # Call SiliconFlow API
+                try:
+                    headers = {
+                        "Authorization": f"Bearer {SILICONFLOW_API_KEY}",
+                        "Content-Type": "application/json"
+                    }
+                    payload = {
+                        "model": "Qwen/Qwen2.5-7B-Instruct", # Reliable model
+                        "messages": [
+                            {"role": "system", "content": "You are a helpful business logic assistant. Output clean, structured responses."},
+                            {"role": "user", "content": prompt}
+                        ],
+                        "stream": False,
+                        "temperature": 0.7
+                    }
+                    response = requests.post(SILICONFLOW_API_URL, headers=headers, json=payload, timeout=30)
+                    response.raise_for_status()
+                    result = response.json()
+                    output = result['choices'][0]['message']['content']
+                    logs.append({"timestamp": datetime.datetime.now().isoformat(), "level": "SUCCESS", "message": "LLM response received."})
+                except Exception as e:
+                    logs.append({"timestamp": datetime.datetime.now().isoformat(), "level": "ERROR", "message": f"LLM Error: {str(e)}"})
+                    # Mock fallback for reliability
+                    output = f"[Mock Output] Failed to call API. Mock result for prompt: {prompt[:20]}..."
+            
+            # Store output in context
+            context[step_id] = output
+            # Also update the step object to return to frontend
+            step['output'] = output
+            
+        final_status = "success"
+        
+    except Exception as e:
+        final_status = "error"
+        logs.append({"timestamp": datetime.datetime.now().isoformat(), "level": "CRITICAL", "message": f"Workflow failed: {str(e)}"})
+
+    # Save run
+    conn = get_db_connection()
+    conn.execute('INSERT INTO runs (id, workflow_id, status, result, logs, created_at) VALUES (?, ?, ?, ?, ?, ?)',
+                 (run_id, workflow_id, final_status, json.dumps(context), json.dumps(logs), datetime.datetime.now().isoformat()))
+    conn.commit()
+    conn.close()
+    
+    return jsonify({
+        "run_id": run_id,
+        "status": final_status,
+        "logs": logs,
+        "results": context
+    })
+
+@app.route('/api/chat', methods=['POST'])
+def chat():
+    # Direct chat endpoint for "Assistant" feature
+    data = request.json
+    message = data.get('message', '')
+    
+    try:
+        headers = {
+            "Authorization": f"Bearer {SILICONFLOW_API_KEY}",
+            "Content-Type": "application/json"
+        }
+        payload = {
+            "model": "Qwen/Qwen2.5-7B-Instruct",
+            "messages": [
+                {"role": "system", "content": "You are LogicStream AI, an intelligent assistant for building business workflows."},
+                {"role": "user", "content": message}
+            ],
+            "stream": False
+        }
+        response = requests.post(SILICONFLOW_API_URL, headers=headers, json=payload, timeout=30)
+        return jsonify(response.json())
+    except Exception as e:
+        return jsonify({"error": str(e)}), 500
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=7860, debug=True)

requirements.txt

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+Flask
+flask-cors
+requests
+python-dotenv
+gunicorn

templates/index.html

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+<!DOCTYPE html>
+<html lang="zh-CN">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>LogicStream - 智能业务决策编排引擎</title>
+    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
+    <script src="https://cdn.tailwindcss.com"></script>
+    <script src="https://cdn.jsdelivr.net/npm/echarts@5.4.3/dist/echarts.min.js"></script>
+    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css" rel="stylesheet">
+    <style>
+        body { font-family: 'Inter', system-ui, -apple-system, sans-serif; background-color: #f3f4f6; color: #1f2937; }
+        .fade-enter-active, .fade-leave-active { transition: opacity 0.3s ease; }
+        .fade-enter-from, .fade-leave-to { opacity: 0; }
+        /* Custom scrollbar */
+        ::-webkit-scrollbar { width: 8px; height: 8px; }
+        ::-webkit-scrollbar-track { background: #f1f1f1; }
+        ::-webkit-scrollbar-thumb { background: #c1c1c1; border-radius: 4px; }
+        ::-webkit-scrollbar-thumb:hover { background: #a8a8a8; }
+    </style>
+</head>
+<body>
+    <div id="app" class="h-screen flex flex-col overflow-hidden">
+        <!-- Header -->
+        <header class="bg-white border-b border-gray-200 h-16 flex items-center justify-between px-6 shadow-sm z-10">
+            <div class="flex items-center space-x-3">
+                <div class="w-8 h-8 bg-blue-600 rounded-lg flex items-center justify-center text-white font-bold">L</div>
+                <h1 class="text-xl font-bold text-gray-800">LogicStream <span class="text-xs font-normal text-gray-500 ml-2">智能业务编排</span></h1>
+            </div>
+            <div class="flex items-center space-x-4">
+                <button @click="currentView = 'dashboard'" :class="{'text-blue-600 font-semibold': currentView === 'dashboard', 'text-gray-500': currentView !== 'dashboard'}" class="hover:text-blue-600 transition">概览</button>
+                <button @click="currentView = 'designer'" :class="{'text-blue-600 font-semibold': currentView === 'designer', 'text-gray-500': currentView !== 'designer'}" class="hover:text-blue-600 transition">工作流设计</button>
+                <div class="h-4 w-px bg-gray-300"></div>
+                <button class="text-gray-500 hover:text-blue-600"><i class="fas fa-user-circle text-xl"></i></button>
+            </div>
+        </header>
+
+        <!-- Main Content -->
+        <div class="flex-1 flex overflow-hidden">
+            <!-- Sidebar (Workflow List) -->
+            <aside class="w-64 bg-white border-r border-gray-200 flex flex-col" v-if="currentView === 'designer'">
+                <div class="p-4 border-b border-gray-200 flex justify-between items-center">
+                    <h2 class="font-semibold text-gray-700">我的工作流</h2>
+                    <button @click="createNewWorkflow" class="text-blue-600 hover:bg-blue-50 p-1 rounded"><i class="fas fa-plus"></i></button>
+                </div>
+                <div class="flex-1 overflow-y-auto p-2 space-y-2">
+                    <div v-for="wf in workflows" :key="wf.id" 
+                         @click="selectWorkflow(wf)"
+                         :class="{'bg-blue-50 border-blue-200': currentWorkflow && currentWorkflow.id === wf.id, 'hover:bg-gray-50 border-transparent': !currentWorkflow || currentWorkflow.id !== wf.id}"
+                         class="p-3 rounded-lg border cursor-pointer transition group relative">
+                        <div class="font-medium text-sm text-gray-800 truncate">${ wf.name }</div>
+                        <div class="text-xs text-gray-500 truncate mt-1">${ wf.description || '无描述' }</div>
+                        <button @click.stop="deleteWorkflow(wf.id)" class="absolute right-2 top-3 text-gray-400 hover:text-red-500 opacity-0 group-hover:opacity-100 transition"><i class="fas fa-trash-alt"></i></button>
+                    </div>
+                </div>
+            </aside>
+
+            <!-- Workspace -->
+            <main class="flex-1 bg-gray-50 relative flex flex-col overflow-hidden">
+                
+                <!-- Dashboard View -->
+                <div v-if="currentView === 'dashboard'" class="p-8 overflow-y-auto h-full">
+                    <div class="grid grid-cols-1 md:grid-cols-3 gap-6 mb-8">
+                        <div class="bg-white p-6 rounded-xl shadow-sm border border-gray-100">
+                            <div class="text-gray-500 text-sm mb-1">总工作流数</div>
+                            <div class="text-3xl font-bold text-gray-800">${ workflows.length }</div>
+                        </div>
+                        <div class="bg-white p-6 rounded-xl shadow-sm border border-gray-100">
+                            <div class="text-gray-500 text-sm mb-1">今日运行次数</div>
+                            <div class="text-3xl font-bold text-blue-600">12</div>
+                        </div>
+                        <div class="bg-white p-6 rounded-xl shadow-sm border border-gray-100">
+                            <div class="text-gray-500 text-sm mb-1">平均成功率</div>
+                            <div class="text-3xl font-bold text-green-600">98.5%</div>
+                        </div>
+                    </div>
+                    
+                    <div class="bg-white p-6 rounded-xl shadow-sm border border-gray-100 mb-8 h-80">
+                        <h3 class="text-lg font-semibold mb-4 text-gray-700">调用趋势 (Mock Data)</h3>
+                        <div id="chart-container" class="w-full h-full"></div>
+                    </div>
+                </div>
+
+                <!-- Designer View -->
+                <div v-else-if="currentView === 'designer' && currentWorkflow" class="flex flex-1 overflow-hidden">
+                    <!-- Canvas Area -->
+                    <div class="flex-1 flex flex-col h-full">
+                        <!-- Toolbar -->
+                        <div class="bg-white border-b border-gray-200 p-3 flex justify-between items-center">
+                            <div class="flex items-center space-x-2">
+                                <input v-model="currentWorkflow.name" class="font-bold text-lg bg-transparent border-b border-transparent hover:border-gray-300 focus:border-blue-500 focus:outline-none px-1" />
+                                <span class="text-xs text-gray-400 px-2 py-1 bg-gray-100 rounded">上次保存: ${ formatTime(currentWorkflow.updated_at) }</span>
+                            </div>
+                            <div class="flex space-x-2">
+                                <button @click="saveWorkflow" class="px-3 py-1.5 bg-white border border-gray-300 text-gray-700 rounded hover:bg-gray-50 text-sm"><i class="fas fa-save mr-1"></i> 保存</button>
+                                <button @click="runWorkflow" class="px-3 py-1.5 bg-blue-600 text-white rounded hover:bg-blue-700 text-sm shadow-sm flex items-center">
+                                    <i class="fas fa-play mr-1" :class="{'fa-spin': isRunning}"></i> ${ isRunning ? '运行中...' : '运行' }
+                                </button>
+                            </div>
+                        </div>
+
+                        <!-- Workflow Steps Editor -->
+                        <div class="flex-1 overflow-y-auto p-6 space-y-4">
+                            <div v-if="!currentWorkflow.steps || currentWorkflow.steps.length === 0" class="text-center py-20 text-gray-400 border-2 border-dashed border-gray-300 rounded-xl">
+                                <p>暂无步骤，点击下方按钮添加</p>
+                            </div>
+                            
+                            <div v-for="(step, index) in currentWorkflow.steps" :key="step.id" class="bg-white rounded-lg shadow-sm border border-gray-200 p-4 relative transition hover:shadow-md">
+                                <div class="absolute -left-3 top-1/2 transform -translate-y-1/2 w-6 h-6 bg-blue-100 text-blue-600 rounded-full flex items-center justify-center text-xs font-bold border border-blue-200 z-10">
+                                    ${ index + 1 }
+                                </div>
+                                
+                                <div class="flex justify-between items-start mb-3">
+                                    <div class="flex items-center space-x-2">
+                                        <span class="px-2 py-0.5 rounded text-xs font-medium uppercase tracking-wide" 
+                                              :class="{
+                                                  'bg-green-100 text-green-700': step.type === 'input',
+                                                  'bg-purple-100 text-purple-700': step.type === 'llm'
+                                              }">
+                                            ${ step.type }
+                                        </span>
+                                        <input v-model="step.name" class="font-semibold text-gray-700 bg-transparent focus:outline-none border-b border-transparent focus:border-blue-300" placeholder="步骤名称" />
+                                        <span class="text-xs text-gray-400 font-mono">ID: ${ step.id }</span>
+                                    </div>
+                                    <button @click="removeStep(index)" class="text-gray-400 hover:text-red-500"><i class="fas fa-times"></i></button>
+                                </div>
+
+                                <!-- Step Content -->
+                                <div v-if="step.type === 'input'" class="space-y-2">
+                                    <label class="block text-xs font-medium text-gray-500">输入内容 (作为初始上下文)</label>
+                                    <textarea v-model="step.content" rows="2" class="w-full text-sm p-2 border border-gray-300 rounded focus:ring-1 focus:ring-blue-500 focus:border-blue-500 outline-none resize-none"></textarea>
+                                </div>
+
+                                <div v-if="step.type === 'llm'" class="space-y-2">
+                                    <label class="block text-xs font-medium text-gray-500">提示词 (Prompt)</label>
+                                    <div class="relative">
+                                        <textarea v-model="step.prompt" rows="3" class="w-full text-sm p-2 border border-gray-300 rounded focus:ring-1 focus:ring-blue-500 focus:border-blue-500 outline-none resize-none font-mono text-gray-600"></textarea>
+                                        <div class="text-xs text-gray-400 mt-1">可用变量: <span v-for="(s, i) in currentWorkflow.steps" :key="s.id" v-show="i < index" class="mr-1 bg-gray-100 px-1 rounded cursor-pointer hover:bg-gray-200" @click="insertVar(step, s.id)">${ '${' + s.id + '.output}' }</span></div>
+                                    </div>
+                                </div>
+
+                                <!-- Result Preview -->
+                                <div v-if="runResults && runResults[step.id]" class="mt-3 pt-3 border-t border-gray-100 bg-gray-50 -mx-4 -mb-4 px-4 py-3 rounded-b-lg">
+                                    <div class="text-xs font-bold text-gray-500 mb-1 flex justify-between">
+                                        <span>运行结果</span>
+                                        <span class="text-green-600"><i class="fas fa-check-circle"></i> 完成</span>
+                                    </div>
+                                    <pre class="text-xs text-gray-700 whitespace-pre-wrap overflow-x-auto max-h-40 font-mono bg-white p-2 border border-gray-200 rounded">${ runResults[step.id] }</pre>
+                                </div>
+                            </div>
+
+                            <!-- Add Step Buttons -->
+                            <div class="flex justify-center space-x-3 pt-4 pb-10">
+                                <button @click="addStep('input')" class="flex items-center space-x-1 px-4 py-2 bg-white border border-gray-300 shadow-sm rounded-full text-sm text-gray-600 hover:bg-gray-50 hover:text-blue-600 transition">
+                                    <i class="fas fa-keyboard"></i> <span>添加输入</span>
+                                </button>
+                                <button @click="addStep('llm')" class="flex items-center space-x-1 px-4 py-2 bg-white border border-gray-300 shadow-sm rounded-full text-sm text-gray-600 hover:bg-gray-50 hover:text-purple-600 transition">
+                                    <i class="fas fa-robot"></i> <span>添加 AI 分析</span>
+                                </button>
+                            </div>
+                        </div>
+                    </div>
+
+                    <!-- Right Panel: Logs -->
+                    <div class="w-80 bg-white border-l border-gray-200 flex flex-col h-full shadow-lg z-20" v-show="showLogs">
+                        <div class="p-3 border-b border-gray-200 bg-gray-50 flex justify-between items-center">
+                            <h3 class="font-semibold text-gray-700">运行日志</h3>
+                            <button @click="logs = []" class="text-xs text-gray-500 hover:text-gray-800">清空</button>
+                        </div>
+                        <div class="flex-1 overflow-y-auto p-3 space-y-2 font-mono text-xs">
+                            <div v-if="logs.length === 0" class="text-gray-400 text-center py-10">等待运行...</div>
+                            <div v-for="(log, idx) in logs" :key="idx" class="p-2 rounded bg-gray-50 border-l-2" 
+                                 :class="{'border-blue-500': log.level === 'INFO', 'border-green-500': log.level === 'SUCCESS', 'border-red-500': log.level === 'ERROR'}">
+                                <div class="text-gray-400 text-[10px] mb-0.5">${ log.timestamp.split('T')[1].split('.')[0] }</div>
+                                <div class="text-gray-800 break-words">${ log.message }</div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+                
+                <div v-else class="flex-1 flex items-center justify-center text-gray-400">
+                    <div class="text-center">
+                        <i class="fas fa-project-diagram text-6xl mb-4 text-gray-200"></i>
+                        <p>请选择或创建一个工作流</p>
+                    </div>
+                </div>
+
+            </main>
+        </div>
+    </div>
+
+    <script>
+        {% raw %}
+        const { createApp, ref, onMounted, nextTick } = Vue;
+
+        createApp({
+            delimiters: ['${', '}'],
+            setup() {
+                const currentView = ref('dashboard');
+                const workflows = ref([]);
+                const currentWorkflow = ref(null);
+                const isRunning = ref(false);
+                const logs = ref([]);
+                const showLogs = ref(true);
+                const runResults = ref({});
+
+                const fetchWorkflows = async () => {
+                    try {
+                        const res = await fetch('/api/workflows');
+                        workflows.value = await res.json();
+                    } catch (e) {
+                        console.error("Failed to fetch workflows", e);
+                    }
+                };
+
+                const createNewWorkflow = async () => {
+                    const newWf = {
+                        name: "未命名工作流 " + (workflows.value.length + 1),
+                        description: "新建的业务逻辑流",
+                        steps: []
+                    };
+                    try {
+                        const res = await fetch('/api/workflows', {
+                            method: 'POST',
+                            headers: {'Content-Type': 'application/json'},
+                            body: JSON.stringify(newWf)
+                        });
+                        const data = await res.json();
+                        await fetchWorkflows();
+                        // Select the new one
+                        const created = workflows.value.find(w => w.id === data.id);
+                        if (created) selectWorkflow(created);
+                    } catch (e) {
+                        alert("创建失败: " + e.message);
+                    }
+                };
+
+                const selectWorkflow = (wf) => {
+                    // Deep copy to avoid direct mutation issues before save
+                    currentWorkflow.value = JSON.parse(JSON.stringify(wf));
+                    // Ensure steps is array
+                    if (typeof currentWorkflow.value.steps === 'string') {
+                        try {
+                            currentWorkflow.value.steps = JSON.parse(currentWorkflow.value.steps);
+                        } catch(e) {
+                            currentWorkflow.value.steps = [];
+                        }
+                    }
+                    if (!currentWorkflow.value.steps) currentWorkflow.value.steps = [];
+                    currentView.value = 'designer';
+                    runResults.value = {};
+                    logs.value = [];
+                };
+
+                const saveWorkflow = async () => {
+                    if (!currentWorkflow.value) return;
+                    try {
+                        await fetch(`/api/workflows/${currentWorkflow.value.id}`, {
+                            method: 'PUT',
+                            headers: {'Content-Type': 'application/json'},
+                            body: JSON.stringify(currentWorkflow.value)
+                        });
+                        await fetchWorkflows(); // Refresh list
+                        alert("保存成功");
+                    } catch (e) {
+                        alert("保存失败: " + e.message);
+                    }
+                };
+
+                const deleteWorkflow = async (id) => {
+                    if (!confirm("确定要删除吗？")) return;
+                    try {
+                        await fetch(`/api/workflows/${id}`, { method: 'DELETE' });
+                        await fetchWorkflows();
+                        if (currentWorkflow.value && currentWorkflow.value.id === id) {
+                            currentWorkflow.value = null;
+                        }
+                    } catch (e) {
+                        alert("删除失败");
+                    }
+                };
+
+                const addStep = (type) => {
+                    if (!currentWorkflow.value) return;
+                    const id = `step_${currentWorkflow.value.steps.length + 1}`;
+                    currentWorkflow.value.steps.push({
+                        id: id,
+                        type: type,
+                        name: type === 'input' ? '输入数据' : 'AI 处理',
+                        content: '',
+                        prompt: '',
+                        output: ''
+                    });
+                };
+
+                const removeStep = (index) => {
+                    currentWorkflow.value.steps.splice(index, 1);
+                };
+
+                const runWorkflow = async () => {
+                    if (!currentWorkflow.value) return;
+                    isRunning.value = true;
+                    logs.value = [];
+                    runResults.value = {};
+                    
+                    // Optimistic UI: save first
+                    await saveWorkflow();
+
+                    try {
+                        const res = await fetch('/api/run_workflow', {
+                            method: 'POST',
+                            headers: {'Content-Type': 'application/json'},
+                            body: JSON.stringify({
+                                workflow_id: currentWorkflow.value.id,
+                                steps: currentWorkflow.value.steps
+                            })
+                        });
+                        const data = await res.json();
+                        logs.value = data.logs;
+                        runResults.value = data.results;
+                        
+                        if (data.status === 'success') {
+                            // Update local steps with output
+                            // Not strictly necessary as results are in runResults, but good for persistence logic later
+                        } else {
+                            logs.value.push({timestamp: new Date().toISOString(), level: 'ERROR', message: "Run returned error status"});
+                        }
+                    } catch (e) {
+                        logs.value.push({timestamp: new Date().toISOString(), level: 'CRITICAL', message: "Network error: " + e.message});
+                    } finally {
+                        isRunning.value = false;
+                    }
+                };
+
+                const insertVar = (step, varName) => {
+                    step.prompt += `{{${varName}.output}}`;
+                };
+
+                const formatTime = (t) => {
+                    if (!t) return '';
+                    return new Date(t).toLocaleString('zh-CN');
+                };
+
+                // Chart Init
+                const initChart = () => {
+                    const chartDom = document.getElementById('chart-container');
+                    if (!chartDom) return;
+                    const myChart = echarts.init(chartDom);
+                    const option = {
+                        tooltip: { trigger: 'axis' },
+                        grid: { left: '3%', right: '4%', bottom: '3%', containLabel: true },
+                        xAxis: { type: 'category', boundaryGap: false, data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'] },
+                        yAxis: { type: 'value' },
+                        series: [
+                            {
+                                name: 'Executions',
+                                type: 'line',
+                                stack: 'Total',
+                                smooth: true,
+                                areaStyle: { color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [{offset: 0, color: '#3B82F6'}, {offset: 1, color: '#EFF6FF'}]) },
+                                itemStyle: { color: '#3B82F6' },
+                                data: [120, 132, 101, 134, 90, 230, 210]
+                            }
+                        ]
+                    };
+                    myChart.setOption(option);
+                    window.addEventListener('resize', () => myChart.resize());
+                };
+
+                onMounted(() => {
+                    fetchWorkflows();
+                    // Delay chart init slightly to ensure DOM is ready if starting on dashboard
+                    setTimeout(initChart, 500);
+                });
+
+                return {
+                    currentView,
+                    workflows,
+                    currentWorkflow,
+                    isRunning,
+                    logs,
+                    showLogs,
+                    runResults,
+                    fetchWorkflows,
+                    createNewWorkflow,
+                    selectWorkflow,
+                    saveWorkflow,
+                    deleteWorkflow,
+                    addStep,
+                    removeStep,
+                    runWorkflow,
+                    insertVar,
+                    formatTime
+                };
+            }
+        }).mount('#app');
+        {% endraw %}
+    </script>
+</body>
+</html>