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/session_orchestrator_test.go

@@ -13,7 +13,7 @@ import (
 	"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/model"
 )
 
-// callRecord is one invocation captured by the fake runner.
+// callRecord 是假 runner 捕获的一次调用。
 type callRecord struct {
 	sessionID string
 	messages  []model.Message
@@ -21,19 +21,19 @@ type callRecord struct {
 	ctx       context.Context
 }
 
-// gatedRunner is a controllable TurnRunner. Each Run blocks until it consumes one
-// ticket from tickets, or until ctx is canceled (the interrupt path). When it
-// proceeds it records the call and returns a deterministic reply. A nil err
-// produces a reply holding the *incoming* messages as text, so a test can assert
-// exactly what context the resumed turn carried.
+// gatedRunner 是一个可控 TurnRunner。每次 Run 都会阻塞，直到它
+// 从 tickets 消费一张票，或直到 ctx 被取消（打断路径）。当它
+// 继续时，它记录这次调用并返回确定性回复。err 为 nil
+// 会产出一个把*传入*消息作为文本持有的回复，使测试能断言
+// 续跑回合究竟携带了什么上下文。
 //
-// Like the real loop runner, it never executes a turn whose context is already
-// canceled, and it counts those canceled returns so a test can wait for an
-// interrupted turn to actually stop (waitCanceled) before releasing the next
-// ticket. Without that, a turn that was canceled *while parked in the select
-// below* can still win the ticket case in the same scheduler step (both cases are
-// ready) and be recorded as if it had run — a test-harness artifact, not an
-// orchestrator ordering guarantee.
+// 与真实的 loop runner 一样，它绝不执行 context 已被取消的
+// 回合，并统计那些被取消的返回，使测试能等待一个
+// 被中断的回合真正停下（waitCanceled），然后再释放下一张
+// 票。没有这一点，一个在下面 select 中驻留时被取消的回合
+// 仍可能在同一调度步骤中赢下 ticket 分支（两个分支都
+// 就绪）并被记录成仿佛已经运行 —— 这是测试夹具的产物，不是
+// 编排器的顺序保证。
 type gatedRunner struct {
 	mu       sync.Mutex
 	calls    []callRecord
@@ -68,8 +68,8 @@ func (g *gatedRunner) Run(ctx context.Context, sessionID string, messages []mode
 	return &loop.Result{Text: fmt.Sprintf("reply-%d", reply), Steps: 1, StopReason: "stop"}, nil
 }
 
-// waitCalls blocks until at least n calls are recorded and returns a copy of the
-// first n, so a test can advance the gated chain deterministically.
+// waitCalls 阻塞直到至少记录 n 次调用，并返回前 n 次的
+// 副本，使测试能确定性地推进受门控的链条。
 func (g *gatedRunner) waitCalls(n int) []callRecord {
 	deadline := time.Now().Add(3 * time.Second)
 	for time.Now().Before(deadline) {
@@ -85,25 +85,25 @@ func (g *gatedRunner) waitCalls(n int) []callRecord {
 	panic("timed out waiting for runner calls")
 }
 
-// count returns the total recorded calls.
+// count 返回已记录调用的总数。
 func (g *gatedRunner) count() int {
 	g.mu.Lock()
 	defer g.mu.Unlock()
 	return len(g.calls)
 }
 
-// recordCanceled notes one invocation that returned because its context was
-// canceled, i.e. a turn that never executed.
+// recordCanceled 记下一次因其 context 被取消而返回的调用，
+// 即一个从未执行的回合。
 func (g *gatedRunner) recordCanceled() {
 	g.mu.Lock()
 	g.canceled++
 	g.mu.Unlock()
 }
 
-// waitCanceled blocks until at least n invocations have stopped because their
-// context was canceled, reporting false when that never happens within the
-// deadline. It is the barrier a test uses between an Interrupt and the release of
-// the next ticket: once it holds, no canceled turn can still consume a ticket.
+// waitCanceled 阻塞直到至少 n 次调用因 context 被取消而
+// 停止，未能在期限内发生时报 false。它是测试在 Interrupt
+// 与释放下一张票之间使用的屏障：它一旦成立，就没有
+// 被取消的回合还能消费一张票。
 func (g *gatedRunner) waitCanceled(n int) bool {
 	deadline := time.Now().Add(3 * time.Second)
 	for time.Now().Before(deadline) {
@@ -118,10 +118,10 @@ func (g *gatedRunner) waitCanceled(n int) bool {
 	return false
 }
 
-// waitIdle blocks until the session reports idle with an empty pending queue,
-// reporting false when it never settles within the deadline. It lets a test assert
-// the settled state deterministically instead of sleeping, and turns "a dropped
-// turn was resumed anyway" into a test failure rather than a silent pass.
+// waitIdle 阻塞直到该会话报告空闲且待处理队列为空，
+// 未能在期限内安定时报 false。它让测试能确定性地断言
+// 安定的状态而不是睡眠等待，并把「被丢弃的回合竟仍被
+// 续跑」变成测试失败，而不是静默通过。
 func waitIdle(o *Orchestrator, sessionID string) bool {
 	deadline := time.Now().Add(3 * time.Second)
 	for time.Now().Before(deadline) {
@@ -133,13 +133,13 @@ func waitIdle(o *Orchestrator, sessionID string) bool {
 	return false
 }
 
-// eventRec is one state transition captured by the recording sink.
+// eventRec 是记录型汇聚点捕获的一次状态转移。
 type eventRec struct {
 	sessionID, typ string
 	data           map[string]any
 }
 
-// recordingSink captures every emitted state transition.
+// recordingSink 捕获每一次发出的状态转移。
 type recordingSink struct {
 	mu     sync.Mutex
 	events []eventRec
@@ -170,12 +170,12 @@ func (s *recordingSink) last() (string, bool) {
 	return s.events[len(s.events)-1].typ, true
 }
 
-// userMsg builds a text-only user message.
+// userMsg 构建一条纯文本用户消息。
 func userMsg(text string) model.Message {
 	return model.TextMessage(model.RoleUser, text)
 }
 
-// messageText returns the concatenated text of a message's text parts.
+// messageText 返回消息文本部分拼接后的文本。
 func messageText(m model.Message) string {
 	var out string
 	for _, c := range m.Content {
@@ -186,8 +186,8 @@ func messageText(m model.Message) string {
 	return out
 }
 
-// seedOrchestrator builds an orchestrator with a gated runner and a recording
-// sink, both returned so the test can drive the chain and assert state events.
+// seedOrchestrator 构建一个带受门控 runner 与记录型汇聚点的
+// 编排器，二者都返回，使测试能驱动链条并断言状态事件。
 func seedOrchestrator(run *gatedRunner, maxPending int) (*Orchestrator, *recordingSink) {
 	sink := &recordingSink{}
 	o := NewOrchestrator(OrchestratorOptions{
@@ -200,13 +200,13 @@ func seedOrchestrator(run *gatedRunner, maxPending int) (*Orchestrator, *recordi
 	return o, sink
 }
 
-// readOnlyEnv returns the group-chat / stranger read-only memory lane.
+// readOnlyEnv 返回群聊 / 陌生人的只读记忆通道。
 func readOnlyEnv() loop.SessionEnv {
 	return loop.SessionEnv{MemWritable: false}
 }
 
-// fakeHistory records every Append so tests assert the orchestrator persists the
-// user stream and the assistant reply into the chat-history store.
+// fakeHistory 记录每一次 Append，使测试能断言编排器把用户
+// 消息流与助手回复持久化进聊天历史存储。
 type fakeHistory struct {
 	mu      sync.Mutex
 	appends []history.Message
@@ -286,9 +286,9 @@ func (f *fakeHistory) ListSessions(context.Context) ([]history.SessionMeta, erro
 	return nil, nil
 }
 
-// MarkSessionRead satisfies the HistoryStore contract for the read-cursor path (D4).
-// The orchestrator never advances a cursor, so the fake only reports the requested
-// cursor back without storing it.
+// MarkSessionRead 为读游标路径（D4）满足 HistoryStore 契约。
+// 编排器绝不推进游标，因此该假实现只把请求的游标
+// 原样报告回去，不予存储。
 func (f *fakeHistory) MarkSessionRead(_ context.Context, _ string, before time.Time) (int64, error) {
 	return before.UnixMilli(), nil
 }
@@ -326,7 +326,7 @@ func TestSubmitPersistsUserAndAssistant(t *testing.T) {
 	if recs[1].SessionID != "web" || recs[1].Role != history.RoleAssistant || recs[1].Content == "" {
 		t.Fatalf("assistant record = %+v", recs[1])
 	}
-	// No mode on the ctx → both fall back to "chat" (design/16 §5.1).
+	// ctx 上没有 mode → 二者都回退到 "chat"（design/16 §5.1）。
 	for i, rec := range recs {
 		if rec.Mode != "chat" {
 			t.Fatalf("record[%d] Mode = %q, want chat fallback", i, rec.Mode)
@@ -344,9 +344,9 @@ func TestSubmitPersistsMessageMode(t *testing.T) {
 		History: hist,
 	})
 	run.tickets <- struct{}{}
-	// The HTTP/WS boundary threads the client's behavior mode through ctx
-	// (design/01 §3, design/16 §5.1); both the user turn and the assistant reply
-	// must be persisted under that mode.
+	// HTTP/WS 边界把客户端的行为模式经 ctx 串下来
+	// （design/01 §3、design/16 §5.1）；用户回合与助手回复
+	// 都必须以该模式被持久化。
 	ctx := withMode(context.Background(), "code")
 	sr, res := o.SubmitSync(ctx, "web", []model.Message{userMsg("改代码")}, loop.OwnerEnv())
 	if !sr.Accepted || !sr.Immediate {
@@ -377,8 +377,8 @@ func TestSubmitPersistsDeviceID(t *testing.T) {
 		History: hist,
 	})
 	run.tickets <- struct{}{}
-	// The HTTP/WS boundary threads the browser deviceID through ctx (design/16 §4.5);
-	// both the user turn and the assistant reply must be tagged with it.
+	// HTTP/WS 边界把浏览器 deviceID 经 ctx 串下来（design/16 §4.5）；
+	// 用户回合与助手回复都必须被它标注。
 	ctx := withDeviceID(context.Background(), "web:chrome:a1b2c3")
 	sr, res := o.SubmitSync(ctx, "web", []model.Message{userMsg("你好")}, loop.OwnerEnv())
 	if !sr.Accepted || !sr.Immediate {
@@ -441,7 +441,7 @@ func TestSubmitDoesNotPersistRejectedTurn(t *testing.T) {
 	t.Parallel()
 	hist := &fakeHistory{}
 	o := NewOrchestrator(OrchestratorOptions{Run: newGatedRunner(0).Run, Log: slog.Default(), History: hist, MaxPending: 1})
-	// Empty turn is rejected before any persistence.
+	// 空回合在任何持久化之前就被拒绝。
 	sr := o.Submit(context.Background(), "web", nil, loop.OwnerEnv())
 	if sr.Accepted || !sr.Empty {
 		t.Fatalf("empty submit = %+v, want Empty reject", sr)
@@ -475,12 +475,12 @@ func TestSubmitBusyPendingNotDropped(t *testing.T) {
 	run := newGatedRunner(4)
 	o, sink := seedOrchestrator(run, 5)
 
-	// Turn A starts and blocks (no ticket yet), so the session is busy.
+	// 回合 A 启动并阻塞（还没有票），因此会话处于忙碌。
 	a := o.Submit(context.Background(), "s1", []model.Message{userMsg("A")}, loop.OwnerEnv())
 	if !a.Immediate {
 		t.Fatalf("A = %+v, want Immediate", a)
 	}
-	// B and C arrive while A is in flight: they must be queued, not dropped.
+	// B 与 C 在 A 在飞时到达：它们必须被排队，而不是被丢弃。
 	b := o.Submit(context.Background(), "s1", []model.Message{userMsg("B")}, readOnlyEnv())
 	c := o.Submit(context.Background(), "s1", []model.Message{userMsg("C")}, loop.OwnerEnv())
 	if !b.Accepted || !b.Pending || b.QueueDepth != 1 {
@@ -493,8 +493,8 @@ func TestSubmitBusyPendingNotDropped(t *testing.T) {
 		t.Fatalf("queue depth = %d, want 2", o.QueueDepth("s1"))
 	}
 
-	// Release the chain: A, then B, then C. The emitted ack should include the
-	// pending depth, and the sink should have seen pending_ack events.
+	// 释放链条：A，然后 B，然后 C。发出的 ack 应包含
+	// 待处理深度，且汇聚点应已看到 pending_ack 事件。
 	types := sink.types()
 	foundAck := false
 	for _, ty := range types {
@@ -537,27 +537,27 @@ func TestSubmitBusyResumeCarriesPreviousContext(t *testing.T) {
 	run.tickets <- struct{}{} // C
 	got := run.waitCalls(3)
 
-	// A starts from a blank turn.
+	// A 从空白回合开始。
 	if len(got[0].messages) != 1 || messageText(got[0].messages[0]) != "A" {
 		t.Fatalf("A messages = %v, want [A]", messageTextList(got[0].messages))
 	}
-	// B must resume carrying A's assistant reply folded into the tail.
+	// B 必须带着折进尾部的 A 助手回复续跑。
 	if !matchesText(got[1].messages, "A", "B") {
 		t.Fatalf("B messages = %v, want B to resume carrying the prior tail", messageTextList(got[1].messages))
 	}
-	// C must resume carrying A's and B's assistant replies.
+	// C 必须带着 A 与 B 的助手回复续跑。
 	if !matchesText(got[2].messages, "A", "C") {
 		t.Fatalf("C messages = %v, want C to resume carrying the prior tail", messageTextList(got[2].messages))
 	}
-	// B's env must be the one the message arrived with (read-only lane).
+	// B 的 env 必须是该消息到达时所用的那个（只读通道）。
 	if got[1].env.MemWritable {
 		t.Fatal("B resumed with MemWritable=true, want the caller's read-only env")
 	}
 }
 
-// matchesText reports whether a resumed turn begins with the captured first user
-// turn (so the prior context was carried over), ends with the expected new user
-// turn, and contains at least one assistant reply in between.
+// matchesText 报告一个续跑回合是否以捕获的首个用户
+// 回合开头（即先前上下文被带了过来）、以预期的新闻用户
+// 回合结尾，且中间至少含有一条助手回复。
 func matchesText(msgs []model.Message, first, last string) bool {
 	if len(msgs) < 3 {
 		return false
@@ -587,7 +587,7 @@ func messageTextList(msgs []model.Message) []string {
 func TestSubmitPendingBoundedRejectsOverflow(t *testing.T) {
 	t.Parallel()
 	run := newGatedRunner(8)
-	o, _ := seedOrchestrator(run, 3) // tight queue
+	o, _ := seedOrchestrator(run, 3) // 紧凑队列
 
 	if sr := o.Submit(context.Background(), "s1", []model.Message{userMsg("A")}, loop.OwnerEnv()); !sr.Immediate {
 		t.Fatalf("A = %+v, want Immediate", sr)
@@ -598,7 +598,7 @@ func TestSubmitPendingBoundedRejectsOverflow(t *testing.T) {
 			t.Fatalf("pending %d = %+v, want Pending depth=%d", i, sr, i+1)
 		}
 	}
-	// Queue is at capacity (3), so the next message is refused, not dropped.
+	// 队列已达容量（3），因此下一条消息被拒绝，而不是被丢弃。
 	over := o.Submit(context.Background(), "s1", []model.Message{userMsg("overflow")}, loop.OwnerEnv())
 	if over.Accepted || !over.PendingFull {
 		t.Fatalf("overflow = %+v, want PendingFull reject", over)
@@ -620,7 +620,7 @@ func TestInterruptCancelsTurnAndClearsPending(t *testing.T) {
 		t.Fatalf("B = %+v, want Pending", sr)
 	}
 
-	// Release no ticket: A is blocked in flight. Interrupt cancels it and clears B.
+	// 不释放任何票：A 阻塞在飞。Interrupt 取消它并清除 B。
 	dropped := o.Interrupt("s1")
 	if dropped != 1 {
 		t.Fatalf("dropped = %d, want 1", dropped)
@@ -629,16 +629,16 @@ func TestInterruptCancelsTurnAndClearsPending(t *testing.T) {
 		t.Fatalf("session not idle after interrupt: busy=%v depth=%d", o.Busy("s1"), o.QueueDepth("s1"))
 	}
 
-	// The cancel must reach the in-flight turn (design/15 §3: interrupt is a
-	// graceful context cancel) and it must stop before any further turn is
-	// released: a canceled turn never executes, so it can never consume the ticket
-	// meant for the next one.
+	// 取消必须抵达在飞回合（design/15 §3：打断是优雅的
+	// context 取消），且它必须在释放任何后续回合之前停下：
+	// 被取消的回合绝不执行，因此它绝不可能消费本该属于
+	// 下一个回合的票。
 	if !run.waitCanceled(1) {
 		t.Fatal("interrupted turn never observed its context cancellation")
 	}
 
-	// A new message after the interrupt must start fresh (Immediate), and the
-	// canceled chain must not have resumed B.
+	// 打断之后的新消息必须全新开始（Immediate），且
+	// 被取消的链条绝不续跑过 B。
 	if sr := o.Submit(context.Background(), "s1", []model.Message{userMsg("C")}, loop.OwnerEnv()); !sr.Immediate {
 		t.Fatalf("C = %+v, want Immediate after interrupt", sr)
 	}
@@ -651,18 +651,18 @@ func TestInterruptCancelsTurnAndClearsPending(t *testing.T) {
 		t.Fatalf("only surviving call = %v, want the C turn", messageTextList(got[0].messages))
 	}
 
-	// C's chain settles with nothing left to run: had the interrupt failed to
-	// cancel A or to clear B, the surviving chain would have resumed a turn and the
-	// session would never go idle again.
+	// C 的链条安定下来且无待运行项：若打断未能取消 A
+	// 或未能清除 B，存活的链条本会续跑一个回合，
+	// 而该会话就再也不会回到空闲。
 	if !waitIdle(o, "s1") {
 		t.Fatalf("session never settled idle: busy=%v depth=%d", o.Busy("s1"), o.QueueDepth("s1"))
 	}
 	if n := run.count(); n != 1 {
 		t.Fatalf("runner calls = %d, want 1 (neither the canceled A nor the dropped B may execute)", n)
 	}
-	// The canceled turn's completion is a no-op for session state (its generation is
-	// stale), so it must not emit the idle event of the turn now running: exactly
-	// one session_idle belongs to this scenario (C settling).
+	// 被取消回合的完成对会话状态是空操作（其代次已
+	// 陈旧），因此它不得发出正在运行那个回合的 idle 事件：
+	// 本场景恰好有一个 session_idle（C 安定）。
 	idles := 0
 	for _, ty := range sink.types() {
 		if ty == EventSessionIdle {
@@ -705,8 +705,8 @@ func TestSubmitConcurrentSameSessionIsSafeAndBounded(t *testing.T) {
 			t.Fatalf("unexpected submit result: %+v", sr)
 		}
 	}
-	// With maxPending=3: exactly 1 turn runs immediately and up to 3 queue behind
-	// it; the remaining senders are refused at capacity rather than dropped.
+	// maxPending=3 时：恰好 1 个回合立即运行，最多 3 个排在其后；
+	// 其余发送者在容量处被拒绝，而不是被丢弃。
 	if immediate != 1 {
 		t.Fatalf("immediate = %d, want 1", immediate)
 	}
@@ -720,7 +720,7 @@ func TestSubmitConcurrentSameSessionIsSafeAndBounded(t *testing.T) {
 		t.Fatalf("queue depth = %d, want 3", o.QueueDepth("s1"))
 	}
 
-	// Drain the chain: 1 running + 3 queued = 4 turns. No panic / no lost message.
+	// 排空链条：1 个在跑 + 3 个排队 = 4 个回合。无 panic / 无消息丢失。
 	for i := 0; i < 4; i++ {
 		run.tickets <- struct{}{}
 	}
@@ -750,8 +750,8 @@ func TestSubmitSyncIdleReturnsResultBusyReturnsPending(t *testing.T) {
 	run := newGatedRunner(2)
 	o, _ := seedOrchestrator(run, 5)
 
-	// Idle → synchronous run returns the reply immediately. Push a ticket so the
-	// gated runner's blocking select resolves during the synchronous wait.
+	// 空闲 → 同步运行立即返回回复。推入一张票，使
+	// 受门控 runner 的阻塞 select 在同步等待期间得以解决。
 	run.tickets <- struct{}{}
 	sr, res := o.SubmitSync(context.Background(), "s1", []model.Message{userMsg("hi")}, loop.OwnerEnv())
 	if !sr.Accepted || !sr.Immediate {
@@ -761,8 +761,8 @@ func TestSubmitSyncIdleReturnsResultBusyReturnsPending(t *testing.T) {
 		t.Fatal("sync idle should return a result")
 	}
 
-	// Hold a busy turn in flight via an async Submit (blocked, no ticket), then a
-	// sync submit must return a Pending ack without blocking and without a result.
+	// 经异步 Submit 握一个在飞的忙碌回合（阻塞，无票），随后
+	// 同步 submit 必须不阻塞、无结果地返回 Pending ack。
 	if sr2 := o.Submit(context.Background(), "s1", []model.Message{userMsg("A")}, loop.OwnerEnv()); !sr2.Immediate {
 		t.Fatalf("async A = %+v, want Immediate", sr2)
 	}
@@ -773,7 +773,7 @@ func TestSubmitSyncIdleReturnsResultBusyReturnsPending(t *testing.T) {
 	if res3 != nil {
 		t.Fatal("sync busy should not return a result (must not block)")
 	}
-	run.tickets <- struct{}{} // let A finish so the orchestrator is idle again
+	run.tickets <- struct{}{} // 让 A 结束，使编排器回到空闲
 }
 
 func TestInterruptAllClearsEverySession(t *testing.T) {