docs(gateway): gateway 剩余文件注释改中文（逐行 1:1，代码零字节改动）

主人 2026-10-03 拍板「注释一律中文」；gateway 至此整包注释中文化完成（本会话共 3 批：
已推库 16 个文件 + 本批剩余文件）。
校验：机械校验（非注释改动行）= 空；剥注释后代码文本逐行比对全等（不一致文件数 0）；
全树 go test ./... 58 包 ok / 0 FAIL；交叉编译绿。

internal/services/gateway/findchannel_test.go

@@ -7,7 +7,7 @@ import (
 	capreg "git.yeij.top/AskaEth/Cyrene_v2/internal/capability/registry"
 )
 
-// testChannel is a bare sdk.Channel used to exercise findChannel resolution.
+// testChannel 是一个裸 sdk.Channel，用于演练 findChannel 的解析。
 type testChannel struct{ name string }
 
 func (t testChannel) Name() string { return t.name }
@@ -18,7 +18,7 @@ func (t testChannel) Disconnect(context.Context) error { return nil }
 func (t testChannel) IsConnected() bool                 { return false }
 func (t testChannel) HealthCheck(context.Context) error { return nil }
 
-// TestFindChannelExactMatch prefers an exact adapter name over a bare-name match.
+// TestFindChannelExactMatch 优先精确适配器名而非裸名匹配。
 func TestFindChannelExactMatch(t *testing.T) {
 	reg := capreg.New()
 	_ = reg.Register(capreg.Capability{Name: "kook:conf0", Kind: capreg.KindChannel, Value: testChannel{name: "kook:conf0"}})
@@ -33,10 +33,10 @@ func TestFindChannelExactMatch(t *testing.T) {
 	}
 }
 
-// TestFindChannelBarePlatformResolvesToTokenAccount verifies a bare platform name
-// ("kook") that is not an exact adapter name resolves to that platform's first
-// registered account (the token-bearing one, since the empty-token bare account
-// is never registered).
+// TestFindChannelBarePlatformResolvesToTokenAccount 验证非精确适配器名的
+// 裸平台名（"kook"）会解析到该平台首个已注册账号
+// （即携带 token 的那个，因为空 token 的裸账号
+// 从不注册）。
 func TestFindChannelBarePlatformResolvesToTokenAccount(t *testing.T) {
 	reg := capreg.New()
 	_ = reg.Register(capreg.Capability{Name: "kook:3fc8", Kind: capreg.KindChannel, Value: testChannel{name: "kook:3fc8"}})
@@ -46,7 +46,7 @@ func TestFindChannelBarePlatformResolvesToTokenAccount(t *testing.T) {
 	}
 }
 
-// TestFindChannelUnknownOrBlank rejects a name that matches no channel.
+// TestFindChannelUnknownOrBlank 拒绝不匹配任何渠道的名字。
 func TestFindChannelUnknownOrBlank(t *testing.T) {
 	reg := capreg.New()
 	_ = reg.Register(capreg.Capability{Name: "kook:conf0", Kind: capreg.KindChannel, Value: testChannel{name: "kook:conf0"}})
@@ -56,7 +56,7 @@ func TestFindChannelUnknownOrBlank(t *testing.T) {
 	if _, ok := findChannel(reg, ""); ok {
 		t.Fatal("blank name should not be found")
 	}
-	// Skipped: non-channel capabilities must not match.
+	// 已跳过：非渠道能力不得匹配。
 	_ = reg.Register(capreg.Capability{Name: "some-tool", Kind: capreg.KindTool, Value: testChannel{name: "some-tool"}})
 	if _, ok := findChannel(reg, "some-tool"); ok {
 		t.Fatal("non-channel capability must not match findChannel")