feat(studio): 新增 Studio 工作流编辑/运行页，优化顶部三栏对齐

- 后端：项目/运行 API、上下文服务与数据模型
- 前端：Studio 列表、编辑页（R1/R2 布局）、运行页与节点图
- 编辑页顶部：CSS Grid 统一标签行与控件行对齐，项目按钮独立第三行
- Docker 开发配置与文档脚本

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/core/config.py

@@ -64,6 +64,11 @@ class Settings:
 	# Agent 工作流模板与运行记录
 	AGENT_TEMPLATES_PATH = DATA_PATH / "agent" / "templates"
 	AGENT_RUNS_PATH = DATA_PATH / "agent" / "runs"
+	AGENT_STUDIO_PROJECTS_PATH = DATA_PATH / "agent" / "studio_projects"
+	AGENT_STUDIO_RUNS_PATH = DATA_PATH / "agent" / "studio_runs"
+	AGENT_SKILL_TEMPLATES_FILE = DATA_PATH / "agent" / "skill_templates.json"
+	AGENT_NICHES_FILE = DATA_PATH / "agent" / "niches.json"
+	AGENT_WORKFLOW_VARIABLES_FILE = DATA_PATH / "agent" / "workflow_variables.json"
 
 	def ensure_directories(self):
 		"""确保所有配置的目录存在，如果不存在则创建"""
@@ -78,6 +83,8 @@ class Settings:
 			self.IMAGES_PATH,
 			self.AGENT_TEMPLATES_PATH,
 			self.AGENT_RUNS_PATH,
+			self.AGENT_STUDIO_PROJECTS_PATH,
+			self.AGENT_STUDIO_RUNS_PATH,
 		]
 		for directory in directories:
 			directory.mkdir(parents=True, exist_ok=True)