chore: 清理 emoji 与修正发布脚本仓库名

产品代码统一为纯文本风格（照参考实现），去掉 emoji：billing/quota/usage 插件、
channels 的提示文案、WebUI 文案，以及 go 测试、docs、packaging 脚本中的
注意/OK/FAIL 等符号化写法。第三方目录（vendor、node_modules、.probe）不动。

另：packaging/upload-release.sh 的仓库名改为真实全名
JianFeeeee/ModelRouter → HeNanMU-EEA/ModelRouter（前者是重定向，POST/PUT 不跟随
会 404）。

internal/billing/wildcard_test.go

@@ -47,7 +47,7 @@ func TestWildcardTokenRuleDoesNotMarkEverySourcePriced(t *testing.T) {
 	// Paid sources must NOT be marked, or their unlisted models bill $0.
 	for _, name := range []string{"paid1", "paid2"} {
 		if _, ok := srcs[name]; ok {
-			t.Errorf("★ wildcard token rule marked %q as priced at 0 — its unlisted "+
+			t.Errorf("wildcard token rule marked %q as priced at 0 — its unlisted "+
 				"models will bill $0 instead of appearing as unpriced", name)
 		}
 	}