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/gateway/billing_rules_api_test.go

@@ -67,7 +67,7 @@ func TestBillingRulesCRUD(t *testing.T) {
 		t.Fatal(err)
 	}
 	if n := len(got.DSL.Profiles[0].Rules); n != 2 {
-		t.Fatalf("★ re-adding an existing url appended instead of replacing: %d rules", n)
+		t.Fatalf("re-adding an existing url appended instead of replacing: %d rules", n)
 	}
 	var mode string
 	for _, r := range got.DSL.Profiles[0].Rules {
@@ -105,7 +105,7 @@ func TestBillingRulesRejectUnknownURLWithWarning(t *testing.T) {
 		t.Fatal(err)
 	}
 	if len(got.Warnings) == 0 {
-		t.Fatal("★ a rule matching no configured source was accepted with no warning — " +
+		t.Fatal("a rule matching no configured source was accepted with no warning — " +
 			"it will price nothing and every request will be recorded as unpriced")
 	}
 	if !strings.Contains(got.Warnings[0], "typo.example.com") {
@@ -136,7 +136,7 @@ func TestBillingRulesInvalidIsRejectedNotPersisted(t *testing.T) {
 		t.Fatal(err)
 	}
 	if len(got.DSL.Profiles[0].Rules) != 1 {
-		t.Errorf("★ a rejected rule was persisted anyway: %d rules", len(got.DSL.Profiles[0].Rules))
+		t.Errorf("a rejected rule was persisted anyway: %d rules", len(got.DSL.Profiles[0].Rules))
 	}
 	// An unparseable price must be refused too, not silently priced at zero.
 	if rr := rulesDo(t, g, http.MethodPost, `{"profile":"p","rule":{"url":"https://y/v1","mode":"token",
@@ -175,7 +175,7 @@ func TestBillingRulesPersistAndReachThePlugin(t *testing.T) {
 		t.Fatalf("read config: %v", err)
 	}
 	if !strings.Contains(string(raw), "commandcode.ai") {
-		t.Errorf("★ the rule is not in config.yaml on disk — an edit that does not "+
+		t.Errorf("the rule is not in config.yaml on disk — an edit that does not "+
 			"survive a restart:\n%s", raw)
 	}
 	reloaded, err := config.Load(cfg.Path)
@@ -226,7 +226,7 @@ func TestBillingRulesPersistAndReachThePlugin(t *testing.T) {
 	}
 	cc, ok := sources["commandcode"]
 	if !ok {
-		t.Fatalf("★ the rule was saved but never injected: prices has %v, "+
+		t.Fatalf("the rule was saved but never injected: prices has %v, "+
 			"no commandcode entry. Every request on it stays unpriced.", keysOf(sources))
 	}
 	if cc == nil {

internal/gateway/stats_period_test.go

@@ -241,7 +241,7 @@ func TestPeriodEmptyWindowFlagsTruncated(t *testing.T) {
 		t.Errorf("empty window reqs = %d, want 0", got.Total.Reqs)
 	}
 	if !got.Truncated {
-		t.Error("★ an empty bounded window must be flagged truncated — otherwise a " +
+		t.Error("an empty bounded window must be flagged truncated — otherwise a " +
 			"rotated-away week reads as 'no traffic that week'")
 	}
 }

internal/gateway/ui/index.html

@@ -992,7 +992,7 @@
           adPoolPeak: "峰值",
           adPoolSteps: "步长 (扩/缩)",
           cModel: "模型",
-          cImageModels: "🖼 图像模型（不可选，请到「生图」页测试）",
+          cImageModels: "图像模型（不可选，请到「生图」页测试）",
           urlHint: "填主机地址，通常不带 /v1 —— 网关会自动拼接路径。但各家约定不同：若填 https://x.com/v1，对话路径会正确，而图像生成会变成 /v1/v1/… 而 404。不确定就用上方「自动探测模型」，它会探测并填好正确形式。",
           navImage: "生图",
           imgWelcome: "输入提示词开始生成",
@@ -1326,7 +1326,7 @@
           adPoolPeak: "Peak",
           adPoolSteps: "Steps (grow/shrink)",
           cModel: "Model",
-          cImageModels: "🖼 Image models (not selectable — use the Image tab)",
+          cImageModels: "Image models (not selectable — use the Image tab)",
           urlHint: "Host address, usually WITHOUT /v1 — the gateway appends the path. Vendors differ: with https://x.com/v1 chat works but image generation becomes /v1/v1/… and 404s. If unsure use Auto-discover above; it probes and fills in the correct form.",
           navImage: "Image",
           imgWelcome: "Describe an image to generate it",

internal/gateway/ui_plugin_test.go

@@ -344,7 +344,7 @@ func TestPluginPagesAreReachableByGoTab(t *testing.T) {
 	body := ui[goTab : goTab+end]
 
 	if !strings.Contains(body, "PLUGIN_PAGES.forEach") {
-		t.Error("★ goTab() does not toggle plugin pages — a plugin page keeps its " +
+		t.Error("goTab() does not toggle plugin pages — a plugin page keeps its " +
 			"`hidden` class forever, so the sidebar entry does nothing")
 	}