perf(canvas): 画布媒体 - 优化媒体加载、播放器与节点交互 (#357)

Merge origin/main at fb089b2 and retain canvas media performance, player layout, and interaction updates.

Co-authored-by: ddCat <2695092045@qq.com>

web/test/canvas-cross-browser-positioning.test.ts

@@ -0,0 +1,15 @@
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+
+import { describe, expect, test } from "bun:test";
+
+const stylesSource = readFileSync(resolve(import.meta.dir, "../src/styles/globals.css"), "utf8");
+
+describe("canvas cross-browser positioning", () => {
+    test("uses standard transforms for the committed raster layer", () => {
+        const rasterLayer = stylesSource.match(/\.canvas-world-raster-layer\s*\{[\s\S]*?\}/)?.[0] || "";
+        expect(rasterLayer).toContain("transform: scale(var(--canvas-committed-scale))");
+        expect(rasterLayer).toContain("transform-origin: 0 0");
+        expect(rasterLayer).not.toContain("zoom:");
+    });
+});