feat&fix: 完善JPEGClient逻辑，前端新增编码器组件

src/components/LabCanvas/index.ts

@@ -29,6 +29,7 @@ export interface TemplateConfig {
 export const previewSizes: Record<string, number> = {
   MechanicalButton: 0.4,
   Switch: 0.35,
+  EC11RotaryEncoder: 0.4,
   Pin: 0.8,
   SMT_LED: 0.7,
   SevenSegmentDisplay: 0.4,
@@ -48,6 +49,7 @@ export const previewSizes: Record<string, number> = {
 export const availableComponents: ComponentConfig[] = [
   { type: "MechanicalButton", name: "机械按钮" },
   { type: "Switch", name: "开关" },
+  { type: "EC11RotaryEncoder", name: "EC11旋转编码器" },
   { type: "Pin", name: "引脚" },
   { type: "SMT_LED", name: "贴片LED" },
   { type: "SevenSegmentDisplay", name: "数码管" },