docs(comments): 注释中文化 · internal/runtime/orchestration（29 文件，纯替换）

- 只翻注释/文档字符串：剥离注释后代码行逐字节不变（机械校验只剩允许的行尾注释形态）
- 裁决编号与 design 节号（02.4.3 / 11.4.2 / design/05 §9 等）逐字保留
- 复核：go build 绿；orchestration 及其子包（audit/comm）测试绿；gofmt 干净

internal/runtime/orchestration/audit/context_test.go

@@ -8,7 +8,7 @@ import (
 	"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/model"
 )
 
-// texts builds a context of text-only messages with the given body texts.
+// texts 用给定的正文文本构建一个仅含文本消息的上下文。
 func texts(role model.Role, bodies ...string) []model.Message {
 	out := make([]model.Message, 0, len(bodies))
 	for _, b := range bodies {
@@ -17,8 +17,8 @@ func texts(role model.Role, bodies ...string) []model.Message {
 	return out
 }
 
-// sameMessage compares a message by role and concatenated text; the test
-// messages are text-only, so this is sufficient for equality.
+// sameMessage 按角色与拼接后的文本比较两条消息；测试消息都是纯文本，因此这足以判定
+// 相等。
 func sameMessage(a, b model.Message) bool {
 	return a.Role == b.Role && messageText(a) == messageText(b)
 }
@@ -29,7 +29,7 @@ func TestNewContextAuditor_Snapshot(t *testing.T) {
 	msgs := texts(model.RoleUser, "alpha", "bravo", "charlie")
 	aud := NewContextAuditor(msgs)
 
-	// Mutating the caller's slice after construction must not affect the audit.
+	// 构造之后再改调用方的切片，不得影响审计结果。
 	msgs[0].Role = model.RoleSystem
 	got := aud.Full()
 	if got[0].Role != model.RoleUser {