chore: 基线 — 已发布壁纸现状原样入库（未做任何改动）

dist/ 为 Wallpaper Engine 网页壁纸「【崩坏：星穹铁道】昔涟」(workshopid 3604974793, version 2)，
含两套预设 xilian / kv37，总计 105.1MB。本次提交不做任何修改，仅作为后续优化的对拍基线。

dist/scripts/spine-controller.js

@@ -0,0 +1,60 @@
+export default class SpineController {
+  constructor(containerId, config = {}) {
+    this.containerId = containerId;
+    this.config = {
+      alpha: true,
+      premultipliedAlpha: false,
+      showControls: false,
+      showLoading: false,
+      ...config,
+    };
+
+    this.previousConfig = {};
+
+    this.container = document.getElementById(containerId);
+    this.player = undefined;
+  }
+
+  create() {
+    if (!this.player) {
+      const containerId = this.containerId;
+      const config = this.config;
+      this.player = new spine.SpinePlayer(containerId, config);
+    }
+  }
+
+  dispose() {
+    if (this.player) {
+      const container = this.container;
+      this.player.dispose();
+      container.innerHTML = "";
+      this.player = undefined;
+    }
+  }
+
+  adjustCanvas() {
+    if (this.player) {
+      const container = this.container;
+      const canvas = container.querySelector("canvas");
+      if (canvas) {
+        const rect = container.getBoundingClientRect();
+        canvas.style.width = "100%";
+        canvas.style.height = "100%";
+        canvas.width = rect.width;
+        canvas.height = rect.height;
+      }
+    }
+  }
+
+  changeConfig(newConfig = {}) {
+    if (this.player) {
+      this.previousConfig = this.config;
+      this.config = {
+        ...this.config,
+        ...newConfig,
+      };
+      this.dispose();
+      this.create();
+    }
+  }
+}