From 69d0f5ee78553574a9bd17133a6a666469b6c429 Mon Sep 17 00:00:00 2001 From: claude Date: Thu, 6 Aug 2026 21:11:42 +0200 Subject: [PATCH] No deadline survives the turn path, from mavweb down to llama-server (#188) Co-authored-by: claude Co-committed-by: claude --- cmd/mavend/clarify.go | 2 +- cmd/mavend/replier_llm.go | 8 +- cmd/mavend/replier_llm_test.go | 10 +- cmd/mavend/voice.go | 2 +- cmd/mavweb/main.go | 20 +- docs/plans/24-no-deadline-on-the-turn-path.md | 10 +- internal/ipc/cancel_test.go | 192 ++++++++++++++++++ internal/ipc/client.go | 106 ++++++++-- internal/ipc/server.go | 36 +++- internal/voice/replier.go | 9 +- 10 files changed, 363 insertions(+), 32 deletions(-) create mode 100644 internal/ipc/cancel_test.go diff --git a/cmd/mavend/clarify.go b/cmd/mavend/clarify.go index bb87835..1271b8d 100644 --- a/cmd/mavend/clarify.go +++ b/cmd/mavend/clarify.go @@ -571,7 +571,7 @@ func (h *reactiveHandler) finishClarified(ctx context.Context, dec router.Decisi } reply := h.applyAction(ctx, dec) if reply == "" { - reply = h.replier.Reply(dec) + reply = h.replier.Reply(ctx, dec) } if reply == "" { // Belt: an empty reply here would be a silent drop. diff --git a/cmd/mavend/replier_llm.go b/cmd/mavend/replier_llm.go index cde52e2..36f0d7f 100644 --- a/cmd/mavend/replier_llm.go +++ b/cmd/mavend/replier_llm.go @@ -22,7 +22,7 @@ func newLLMReplier(c phraser.Completer, block func() string) *llmReplier { // Reply never fails: a clarify, a model error and an unusable generation all // answer from the stub, which is what keeps a turn from breaking on the model. -func (r *llmReplier) Reply(d router.Decision) string { +func (r *llmReplier) Reply(ctx context.Context, d router.Decision) string { if d.Clarify { // The deck, not the stub's single sentence: a clarify she cannot turn // into a question is the line he hears most often when she misses him, @@ -39,14 +39,14 @@ func (r *llmReplier) Reply(d router.Decision) string { // что ты выпел стакан воды" for "я выпил воды". return phraser.FactAck(d.Utterance) } - out, err := r.p.PhraseReply(context.Background(), d) + out, err := r.p.PhraseReply(ctx, d) if err != nil || out == "" { - return r.stub.Reply(d) + return r.stub.Reply(ctx, d) } // The persona checks, on the live path (personaguard.go). A reply that // leaks reasoning or calls him "вы" is worse than a flat one. if _, ok := guardSpoken("reply", out); !ok { - return r.stub.Reply(d) + return r.stub.Reply(ctx, d) } return out } diff --git a/cmd/mavend/replier_llm_test.go b/cmd/mavend/replier_llm_test.go index 027670c..3b3a32c 100644 --- a/cmd/mavend/replier_llm_test.go +++ b/cmd/mavend/replier_llm_test.go @@ -22,7 +22,7 @@ func (s stubCompleter) Complete(_ context.Context, _ llm.Req) (string, error) { func TestLLMReplierPassesTheModelReplyThrough(t *testing.T) { r := newLLMReplier(stubCompleter{out: `{"response":"записала, кофе закончился","mood":"neutral"}`}, nil) - got := r.Reply(router.Decision{Intent: router.IntentNote, Slots: router.Slots{Text: "кофе закончился"}}) + got := r.Reply(context.Background(), router.Decision{Intent: router.IntentNote, Slots: router.Slots{Text: "кофе закончился"}}) if got != "записала, кофе закончился" { t.Errorf("got %q, want %q", got, "записала, кофе закончился") } @@ -42,7 +42,7 @@ func TestLLMReplierFallsBackToStubOnEmpty(t *testing.T) { // the clarify deck rather than the stub's single sentence. func TestLLMReplierClarifyReadsTheDeck(t *testing.T) { r := newLLMReplier(stubCompleter{out: "я всё поняла"}, nil) - got := r.Reply(router.Decision{Clarify: true, Utterance: "мгм"}) + got := r.Reply(context.Background(), router.Decision{Clarify: true, Utterance: "мгм"}) if got == "я всё поняла" { t.Fatal("a clarify must not be phrased by the model") } @@ -50,7 +50,7 @@ func TestLLMReplierClarifyReadsTheDeck(t *testing.T) { t.Errorf("on clarify: got %q, want %q", got, want) } // Two different misses do not sound identical. - if same := r.Reply(router.Decision{Clarify: true, Utterance: "а"}); same == got { + if same := r.Reply(context.Background(), router.Decision{Clarify: true, Utterance: "а"}); same == got { t.Log("two utterances hashed to the same line, which is allowed but should be rare") } } @@ -60,14 +60,14 @@ func TestLLMReplierClarifyReadsTheDeck(t *testing.T) { // produce, which is the same claim without pinning one wording. func assertAck(t *testing.T, r *llmReplier, d router.Decision, key, what string) { t.Helper() - if got := r.Reply(d); !phraser.IsAck(key, nil, got) { + if got := r.Reply(context.Background(), d); !phraser.IsAck(key, nil, got) { t.Errorf("on %s: got %q, want a %q line", what, got, key) } } func assertStub(t *testing.T, r *llmReplier, d router.Decision, what string) { t.Helper() - got, want := r.Reply(d), voice.NewStubReplier().Reply(d) + got, want := r.Reply(context.Background(), d), voice.NewStubReplier().Reply(context.Background(), d) if got != want { t.Errorf("on %s: got %q, want stub %q", what, got, want) } diff --git a/cmd/mavend/voice.go b/cmd/mavend/voice.go index 4e12bce..d148ac9 100644 --- a/cmd/mavend/voice.go +++ b/cmd/mavend/voice.go @@ -458,7 +458,7 @@ func (h *reactiveHandler) runTurn(ctx context.Context, text string, src turnSour // 9. replier — phrase the reply across the router decision. if replyText == "" { - replyText = h.replier.Reply(dec) + replyText = h.replier.Reply(ctx, dec) } return withNotice(expiredNotice, replyText) } diff --git a/cmd/mavweb/main.go b/cmd/mavweb/main.go index 22578cd..a42d959 100644 --- a/cmd/mavweb/main.go +++ b/cmd/mavweb/main.go @@ -58,6 +58,12 @@ func main() { // mutex, so sharing the connection would freeze every other page for the // length of the load. See handleModels. var swapConn modelController + // turnConn — a third connection, for POST /api/chat and nothing else, for + // the same reason /models has one (V-638). A chat turn routes, phrases and + // may act, bounded only by phraser.timeout at 60s, and every other handler + // on this server queues behind it on the shared client's one mutex. Nil ⇒ + // chat shares the main connection, which is how it behaved before. + var turnConn ipc.CoreAPI if *coreSock != "" { c, err := ipc.DialWait(*coreSock, 60*time.Second) if err != nil { @@ -71,6 +77,12 @@ func main() { defer sc.Close() swapConn = sc } + if tc, err := ipc.Dial(*coreSock); err != nil { + log.Printf("chat: third core connection failed (%v) — /api/chat will share the main one and a turn will block the other pages", err) + } else { + defer tc.Close() + turnConn = tc + } } // stepUpSession stays nil unless the passkey endpoints are wired below — it @@ -208,7 +220,13 @@ func main() { // decides how every utterance is routed and how every reply is worded. mux.HandleFunc("/tools", gatedPage(handleTools)) mux.HandleFunc("/routines", gatedPage(handleRoutines)) - mux.HandleFunc("/api/chat", gatedPage(handleChatAPI)) + mux.HandleFunc("/api/chat", func(w http.ResponseWriter, r *http.Request) { + c := turnConn + if c == nil { + c = core + } + handleChatAPI(w, r, c, stepUpSession, *requireStepUp) + }) mux.HandleFunc("/api/revert", gatedPage(handleRevert)) mux.HandleFunc("/api/correct", gatedPage(handleCorrectAPI)) mux.HandleFunc("/models", func(w http.ResponseWriter, r *http.Request) { diff --git a/docs/plans/24-no-deadline-on-the-turn-path.md b/docs/plans/24-no-deadline-on-the-turn-path.md index 331223f..f8adc58 100644 --- a/docs/plans/24-no-deadline-on-the-turn-path.md +++ b/docs/plans/24-no-deadline-on-the-turn-path.md @@ -1,6 +1,14 @@ # No deadline on the turn path -Last verified: 06-08-2026 @ 06c1cf2 +Last verified: 06-08-2026 @ 60e64dd + +**All four steps landed on 06-08-2026.** What follows describes the defect as it was and +the work as it was planned. Two things came out differently. `Client.Close` read the conn +field with no lock while `roundtrip` re-dialed and dropped it. `-race` caught that on the +new cancellation test. So the conn field now has a mutex of its own, held only across a +read or an assignment. And `/api/ptt` needed nothing: it proxies to the voice port and never +touches the shared client, so only `/api/chat` got the extra connection. The pool inside +`ipc.Client` is still unbuilt and still waiting on a second module measured queueing. V-638. Sibling of V-607, which is the same class of bug in `internal/worker`. Reads with `docs/offload.md` and `docs/protocol.md`. diff --git a/internal/ipc/cancel_test.go b/internal/ipc/cancel_test.go new file mode 100644 index 0000000..084d7b7 --- /dev/null +++ b/internal/ipc/cancel_test.go @@ -0,0 +1,192 @@ +package ipc + +import ( + "context" + "errors" + "net" + "path/filepath" + "testing" + "time" +) + +// A cancelled context has to abort a call that is already in flight. It did not +// until V-638: call checked ctx once before sending and then blocked in +// roundtrip with no connection deadline, so a daemon that read the frame and +// never answered parked the caller for as long as the socket stayed open. +// +// The server here is that daemon: it accepts, reads nothing, replies nothing. + +func deafServer(t *testing.T) string { + t.Helper() + sock := filepath.Join(t.TempDir(), "deaf.sock") + ln, err := net.Listen("unix", sock) + if err != nil { + t.Fatalf("listen: %v", err) + } + t.Cleanup(func() { _ = ln.Close() }) + go func() { + for { + conn, err := ln.Accept() + if err != nil { + return + } + // Hold it open and say nothing. Closed by the listener cleanup. + t.Cleanup(func() { _ = conn.Close() }) + } + }() + return sock +} + +func TestClientCancelAbortsAReadInFlight(t *testing.T) { + c, err := Dial(deafServer(t)) + if err != nil { + t.Fatalf("dial: %v", err) + } + defer c.Close() + + ctx, cancel := context.WithCancel(context.Background()) + go func() { + time.Sleep(50 * time.Millisecond) + cancel() + }() + + done := make(chan error, 1) + go func() { + _, err := c.Ping(ctx) + done <- err + }() + + select { + case err := <-done: + // Ping is read-only, so the cancellation is reported as itself rather + // than as an ambiguous mutation. + if !errors.Is(err, context.Canceled) { + t.Errorf("got %v, want context.Canceled", err) + } + case <-time.After(5 * time.Second): + t.Fatal("a cancelled Ping did not return") + } +} + +// A mutation cancelled while awaiting the reply may already have committed, so +// it is ErrAmbiguousOutcome and never a retry. That split is the invariant +// internal/ipc/maperr_test.go's neighbours rest on. +func TestClientCancelLeavesAMutationAmbiguous(t *testing.T) { + c, err := Dial(deafServer(t)) + if err != nil { + t.Fatalf("dial: %v", err) + } + defer c.Close() + + ctx, cancel := context.WithTimeout(context.Background(), 50*time.Millisecond) + defer cancel() + + done := make(chan error, 1) + go func() { + _, err := c.WriteFact(ctx, WriteFactReq{Key: "water", Value: "drank"}) + done <- err + }() + + select { + case err := <-done: + if !errors.Is(err, ErrAmbiguousOutcome) { + t.Errorf("got %v, want ErrAmbiguousOutcome", err) + } + case <-time.After(5 * time.Second): + t.Fatal("a cancelled WriteFact did not return") + } +} + +// The deadline itself, with no cancellation: a call on a context with no +// deadline used to have no bound at all. This one has one and must respect it. +func TestClientDeadlineBoundsACall(t *testing.T) { + c, err := Dial(deafServer(t)) + if err != nil { + t.Fatalf("dial: %v", err) + } + defer c.Close() + + ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond) + defer cancel() + + start := time.Now() + if _, err := c.Ping(ctx); err == nil { + t.Fatal("a deaf server answered a Ping") + } + if elapsed := time.Since(start); elapsed > 3*time.Second { + t.Errorf("Ping took %v, want the context deadline to bound it", elapsed) + } +} + +// blockingAPI parks Presence until its context is cancelled and records what +// cancelled it. Every other method is the unimplemented floor. +type blockingAPI struct { + UnimplementedCoreAPI + entered chan struct{} + err chan error +} + +func (b *blockingAPI) Presence(ctx context.Context) (Presence, error) { + close(b.entered) + <-ctx.Done() + b.err <- ctx.Err() + return Presence{}, ctx.Err() +} + +// serveConn dispatched under context.Background() until V-638, so Close could +// only abandon a dispatch in flight and never tell it to stop. +func TestServerCloseCancelsADispatchInFlight(t *testing.T) { + api := &blockingAPI{entered: make(chan struct{}), err: make(chan error, 1)} + srv, err := Listen(filepath.Join(t.TempDir(), "core.sock"), api) + if err != nil { + t.Fatalf("listen: %v", err) + } + served := make(chan struct{}) + go func() { _ = srv.Serve(); close(served) }() + + cli, err := Dial(srv.Path()) + if err != nil { + t.Fatalf("dial: %v", err) + } + defer cli.Close() + go func() { _, _ = cli.Presence(context.Background()) }() + + select { + case <-api.entered: + case <-time.After(5 * time.Second): + t.Fatal("the handler was never dispatched") + } + + _ = srv.Close() + <-served + select { + case got := <-api.err: + if !errors.Is(got, context.Canceled) { + t.Errorf("handler saw %v, want context.Canceled", got) + } + case <-time.After(5 * time.Second): + t.Fatal("Close did not cancel the dispatch") + } +} + +// The watchdog closes the conn, and it races the end of the call: a +// cancellation landing as the reply arrives can close a conn the call was +// already done with. That is survivable either way, because a write to a closed +// socket is errWriteLost and errWriteLost re-dials and retries, so this test +// passes with or without the drop in roundtrip's defer. What it pins is that +// the recovery is real and costs one round trip at most, never an error the +// caller sees. +func TestClientSurvivesACancelledCall(t *testing.T) { + _, _, cli, _ := newServerWithStore(t) + + for i := 0; i < 20; i++ { + ctx, cancel := context.WithCancel(context.Background()) + go cancel() // races the reply on purpose + _, _ = cli.Ping(ctx) + cancel() + + if _, err := cli.Ping(context.Background()); err != nil { + t.Fatalf("call %d after a cancelled one: %v", i, err) + } + } +} diff --git a/internal/ipc/client.go b/internal/ipc/client.go index 5cf1fc9..08c885c 100644 --- a/internal/ipc/client.go +++ b/internal/ipc/client.go @@ -26,9 +26,20 @@ type Client struct { conn net.Conn path string // the address as configured, kept for errors and logs addr netaddr.Addr // parsed, so a dropped conn can be re-dialed (core restart) - mu sync.Mutex + mu sync.Mutex // one request at a time, so a frame and its reply pair up + + // connMu guards the conn field alone, and is held only across an assignment + // or a read. It exists so Close and the cancellation watchdog can reach the + // connection without waiting for the call that is holding c.mu (V-638). + connMu sync.Mutex } +// defaultCallTimeout bounds a call whose context carries no deadline. It is +// the same 120s internal/voice/client.go settles on: long enough for a model +// call on a cold resident model, short enough that a daemon which stopped +// answering does not park the caller forever. +const defaultCallTimeout = 120 * time.Second + // errWriteLost marks a conn drop while sending the request frame: the request // never reached the server (or the server never saw a complete frame), so // retrying is always safe regardless of method — nothing was applied to @@ -103,11 +114,22 @@ func Dial(path string) (*Client, error) { return &Client{conn: c, path: path, addr: addr}, nil } +// Close closes the connection out from under a call in flight, on purpose: a +// shutdown must not wait out a parked read. It takes connMu and never c.mu, so +// it cannot block behind the call it is interrupting. +// +// The lock is taken and released by hand, around the two field accesses and +// nothing else. The socket close happens outside it, because a close on a tcp +// conn can block and connMu is on the path of every call. func (c *Client) Close() error { - if c.conn == nil { + c.connMu.Lock() + conn := c.conn + c.conn = nil + c.connMu.Unlock() + if conn == nil { return nil } - return c.conn.Close() + return conn.Close() } // DialWait is Dial with patience: it retries with capped backoff until the @@ -163,16 +185,26 @@ func (c *Client) call(ctx context.Context, m Method, params, result any) error { } var resp Response - err := c.roundtrip(m, raw, &resp) + err := c.roundtrip(ctx, m, raw, &resp) switch { case errors.Is(err, errWriteLost): // The request never left; a duplicate send can't double-apply. // Redial (roundtrip re-dials on a nil conn) and retry exactly once. - err = c.roundtrip(m, raw, &resp) + // Not when the caller has given up — a retry would only be a second + // frame nobody is waiting for. + if ctx.Err() == nil { + err = c.roundtrip(ctx, m, raw, &resp) + } case errors.Is(err, errReadLost): if readOnlyMethods[m] { + if ctx.Err() != nil { + // The caller cancelled the read it was waiting for. Nothing + // was applied, so this is the cancellation and not an + // ambiguity. + return ctx.Err() + } // A duplicate read can't double-apply either — safe to replay. - err = c.roundtrip(m, raw, &resp) + err = c.roundtrip(ctx, m, raw, &resp) } else { // The mutation may have already committed server-side. Do not // retry: report the ambiguity instead of guessing. @@ -199,19 +231,55 @@ func (c *Client) call(ctx context.Context, m Method, params, result any) error { // failure is wrapped in errReadLost (ambiguous — call() only retries it for // read-only methods). Either way a failed conn is dropped so the next call // re-dials clean. Caller holds c.mu. -func (c *Client) roundtrip(m Method, raw json.RawMessage, resp *Response) error { - if c.conn == nil { - conn, err := netaddr.Dial(c.addr) +// +// The connection carries a deadline derived from ctx, falling back to +// defaultCallTimeout, and a watchdog closes it if ctx is cancelled mid-call +// (V-638). Before that a daemon which stopped answering parked the caller for +// as long as the socket stayed open. The watchdog closes the conn rather than +// calling drop, because drop wants c.mu and the caller is holding it — the +// closed socket fails the read, and roundtrip drops it on the way out. +func (c *Client) roundtrip(ctx context.Context, m Method, raw json.RawMessage, resp *Response) error { + conn := c.currentConn() + if conn == nil { + dialed, err := netaddr.Dial(c.addr) if err != nil { return fmt.Errorf("%w: dial %s: %v", errWriteLost, c.addr, err) } - c.conn = conn + c.setConn(dialed) + conn = dialed } - if err := writeFrame(c.conn, Request{Method: m, Params: raw}); err != nil { + if dl, ok := ctx.Deadline(); ok { + _ = conn.SetDeadline(dl) + } else { + _ = conn.SetDeadline(time.Now().Add(defaultCallTimeout)) + } + defer conn.SetDeadline(time.Time{}) + + // The watchdog and the end of the call race by construction: a cancellation + // landing just as the reply arrives can close a conn this call is already + // done with, and c.conn would still point at the closed socket. So a call + // whose context ended does not leave the conn behind for the next one, + // whichever of the two got there first. + done := make(chan struct{}) + defer func() { + close(done) + if ctx.Err() != nil { + c.drop() + } + }() + go func() { + select { + case <-ctx.Done(): + _ = conn.Close() + case <-done: + } + }() + + if err := writeFrame(conn, Request{Method: m, Params: raw}); err != nil { c.drop() return fmt.Errorf("%w: %v", errWriteLost, err) } - if err := readFrame(c.conn, resp); err != nil { + if err := readFrame(conn, resp); err != nil { c.drop() return fmt.Errorf("%w: %v", errReadLost, err) } @@ -220,12 +288,26 @@ func (c *Client) roundtrip(m Method, raw json.RawMessage, resp *Response) error // drop closes and forgets the current conn so the next call re-dials. func (c *Client) drop() { + c.connMu.Lock() + defer c.connMu.Unlock() if c.conn != nil { _ = c.conn.Close() c.conn = nil } } +func (c *Client) currentConn() net.Conn { + c.connMu.Lock() + defer c.connMu.Unlock() + return c.conn +} + +func (c *Client) setConn(conn net.Conn) { + c.connMu.Lock() + defer c.connMu.Unlock() + c.conn = conn +} + // hydrate rehydrates a wire RpcError into the matching package sentinel. The // code↔sentinel table is the only place the wire "knows" about errors; keep it // in sync with codeOf in wire.go. diff --git a/internal/ipc/server.go b/internal/ipc/server.go index 97ee006..1f1a608 100644 --- a/internal/ipc/server.go +++ b/internal/ipc/server.go @@ -30,6 +30,14 @@ type Server struct { done chan struct{} accept sync.Mutex // guards wg.Add vs Close's wg.Wait sequence + // ctx — server-scoped, cancelled by Close, and the parent of every request + // context. serveConn dispatched under context.Background() until V-638, so + // a dispatch in flight during shutdown could not be told to stop and the + // closeGrace below could only abandon it. Cancelling gives a handler that + // respects its context the chance to return instead. + ctx context.Context + cancel context.CancelFunc + // conns — every accepted connection still being served. Close needs these // because closing the listener does nothing to a connection already // accepted: serveConn is parked in readFrame waiting for a peer that may @@ -208,11 +216,14 @@ func Listen(path string, api CoreAPI) (*Server, error) { if err != nil { return nil, err } + ctx, cancel := context.WithCancel(context.Background()) s := &Server{ - path: path, - addr: addr, - ln: ln, - done: make(chan struct{}), + path: path, + addr: addr, + ln: ln, + done: make(chan struct{}), + ctx: ctx, + cancel: cancel, } s.api.Store(api) return s, nil @@ -250,7 +261,10 @@ func (s *Server) Serve() error { func (s *Server) serveConn(c net.Conn) { caller, callerOK := peerCaller(c) - ctx := context.Background() + // Derived from the server's, so Close cancels a dispatch in flight, and + // cancelled when this conn ends so nothing a handler spawned outlives it. + ctx, cancel := context.WithCancel(s.serverContext()) + defer cancel() if callerOK { ctx = WithCaller(ctx, caller) } @@ -274,6 +288,15 @@ func (s *Server) serveConn(c net.Conn) { } } +// serverContext is s.ctx, or Background for a Server built as a zero value +// rather than by Listen (the wiring tests do that). +func (s *Server) serverContext() context.Context { + if s.ctx == nil { + return context.Background() + } + return s.ctx +} + func (s *Server) safeDispatch(ctx context.Context, req Request) (result json.RawMessage, err error) { defer func() { if r := recover(); r != nil { @@ -720,6 +743,9 @@ func (s *Server) Close() error { default: close(s.done) } + if s.cancel != nil { + s.cancel() + } err := s.ln.Close() // Closing the listener stops new connections; it does nothing to the ones // already accepted. Close those too, or every serveConn parked in readFrame diff --git a/internal/voice/replier.go b/internal/voice/replier.go index ef05de0..0d52515 100644 --- a/internal/voice/replier.go +++ b/internal/voice/replier.go @@ -26,6 +26,8 @@ package voice import ( + "context" + "github.com/kami/maven/internal/phraser" "github.com/kami/maven/internal/router" ) @@ -38,8 +40,10 @@ import ( // decision's Intent + Slots + Clarify. The Intent largely names the reply // shape (act/reminder/fact/note/query/clarify); the Slots carry the // specifics that personalise it ("got it: water at 14:00"). +// The context is the turn's, and it is the only bound an LLM-backed impl has +// besides the phraser timeout (V-638). A floor impl ignores it. type Replier interface { - Reply(d router.Decision) string + Reply(ctx context.Context, d router.Decision) string } // StubReplier — the deterministic, no-model floor. Canned per intent; @@ -54,7 +58,8 @@ func NewStubReplier() *StubReplier { return &StubReplier{} } // Reply dispatches on Intent + Clarify. Each branch is short; the LLM impl // will replace this with prompted text and the same dispatch shape. -func (s *StubReplier) Reply(d router.Decision) string { +// It makes no model call, so the context is unused. +func (s *StubReplier) Reply(_ context.Context, d router.Decision) string { if d.Clarify { return "не совсем поняла — можешь переформулировать?" }