feat: 添加GLM-4.5V和DashScope模型支持，优化饮食分析服务的API调用

.env.glm.example

@@ -0,0 +1,24 @@
+# GLM-4.5V Configuration Example
+# Copy this to your .env file and update with your actual API key
+
+# AI Vision Provider - set to 'glm' to use GLM-4.5V, 'dashscope' for Qwen (default)
+AI_VISION_PROVIDER=glm
+
+# GLM-4.5V API Configuration
+GLM_API_KEY=your_glm_api_key_here
+GLM_BASE_URL=https://open.bigmodel.cn/api/paas/v4
+
+# GLM Model Names
+GLM_MODEL=glm-4-flash
+GLM_VISION_MODEL=glm-4v-plus
+
+# Alternative: Use GLM-4.5V models (if available)
+# GLM_MODEL=glm-4.5
+# GLM_VISION_MODEL=glm-4.5v
+
+# DashScope Configuration (fallback/default)
+# Keep these for fallback or if you want to switch between providers
+DASHSCOPE_API_KEY=your_dashscope_api_key_here
+DASHSCOPE_BASE_URL=https://dashscope.aliyuncs.com/compatible-mode/v1
+DASHSCOPE_MODEL=qwen-flash  
+DASHSCOPE_VISION_MODEL=qwen-vl-max