Keep the store's one connection, delete the seam it cannot survive (V-642)

`SetMaxOpenConns(1)` under WAL gives up concurrent reads, and the task
asked whether that costs anything. Measured over a fixed two-second
window, a paced writer against a read loop, three runs per cap:
reads do not queue. Four connections buy 70µs at p50 on a turn that
spends 1.19s in the resident model, and write throughput more than
halves. A 19ms worst case also cannot be the source of the 2.7s router
figure, so that line of enquiry is closed.

What the cap cannot survive is a long-lived transaction. It holds the
only connection, so a second read never completes: two seconds and
`context deadline exceeded`, against 1ms at a cap of four.

`Store.DB` handed out exactly that transaction. It had been there since
the initial commit with no production caller, and its comment described
a loop that never materialised. Its one user was a test helper reading
`delivery_attempts` by raw SQL, which `ListDeliveryAttempts` has covered
since V-390. So the cap stays and the seam goes, and the hazard is gone
by construction rather than by documentation.

`internal/store/conncap_test.go` stays as the standing measurement,
skipped under -short. The comment at the cap and the one in
`internal/ipc/server.go` that leans on it now state the invariant and
cite the numbers.

Measurement: docs/evals/2026-08-07-store-connection-cap.md

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

CLAUDE.md

@@ -53,7 +53,7 @@ CGO daemons (`mavend`, `mavsttd`, `mavttsd`, `mavenclient`) need the vendored to
 and libs wired through the Makefile — **do not** call `go build` on them bare, use `make`:
 
 ```sh
-make build          # all 9 binaries
+make build          # all 11 binaries
 make build-web      # single daemon (pure-Go ones: web/waked/poll/caldav build without CGO)
 make test           # go test -race across ./internal/... ./cmd/... with CGO env set
 ```
@@ -82,13 +82,31 @@ Pure-Go packages (`router`, `memory`, `mavweb`, …) run under a plain `go test
 | `mavpoll` | Environment poller: netdata alarms, uptime-kuma, zenmoney, wireguard presence. Writes facts, sends nothing. Telegram is `internal/delivery/telegramsink`, not this. |
 | `mavcaldav` | CalDAV calendar sync. |
 | `mavmaild` | Mail reader (IMAP, read-only). Holds the IMAP password; core never sees it. |
+| `mavgpud` | GPU supervisor. **Runs on workpc, not homesrv** — own unit, `deploy/mavgpud.service`. Keeps llama-server loaded while the card is free (V-488). Maven never asks it for anything, it reads `/health` through `llm.Pair`. |
+| `mavupdate` | Not a daemon. Operator CLI a human runs on the box to deploy a new build. |
+
+Two more binaries have no Makefile target and are built with `go run` or `go build` when
+they are needed. Neither is deployed.
+
+| Binary | Role |
+|---|---|
+| `mavseal` | Recovery tool. Encrypts a live tmpfs working copy back to the ciphertext file when mavend was killed before `defer st.Close()` sealed it. |
+| `labelgen` | Runs the stage 0 grammars over utterances and prints JSONL, the training data for the routing heads (V-546). |
 
 Daemons are wired socket-to-socket, not linked. `internal/ipc` is the client/server wire
 protocol; the config in `deploy/mavend.json` (with `${VAR}` env expansion from gitignored
 `deploy/telegram.env`) sets socket paths, model paths, and the phraser/embedder blocks.
 
-**Seven of the nine run on homesrv. `mavwaked` and `mavenclient` do not, and that is the
-decision, not an oversight** (Vikunja #463, `docs/plans/17-where-the-voice-loop-runs.md`).
+**`docker-compose.yml` runs five: `mavend`, `mavsttd`, `mavttsd`, `mavweb`, `mavpoll`.**
+Count against compose, not against the table. Four of the nine daemons are absent, and each
+absence has a different reason.
+
+`mavmaild` is commented out in compose, with the reason written beside it: it needs a mail
+account and this box has none. `mavcaldav` appears nowhere at all, and unlike the other
+three that is an oversight rather than a decision (V-644).
+
+**`mavwaked` and `mavenclient` are absent by decision, not oversight** (Vikunja #463,
+`docs/plans/17-where-the-voice-loop-runs.md`).
 homesrv has a microphone — it is a laptop — but it is in the wrong room, so a wake-word
 daemon there listens to nobody. They belong on a client machine where the owner is standing.
 
@@ -305,9 +323,20 @@ not a transcript. The transcript still expires. The gesture that writes one is
 two buttons beside the reply on `/chat`, reached over `ipc.CorrectTurn` and the
 trace id that now rides back on `ipc.ChatReply`. A turn marked wrong with no
 target is a usable negative, so naming the intent is never required. The target
-is one of the seven intents and never free text. Only `/chat` offers it: the wire
-op assumes no browser, but telegram and voice do not call it yet, and
-`docs/plans/22-correcting-a-turn.md` says why voice is the hard one. Adding a rung to the ladder
+is one of the seven intents and never free text. **All three reaches offer it as
+of 06-08-2026**, and this section used to say only `/chat` did. Voice is the
+`repair` rung, which has read spoken corrections since V-455 and now writes the
+durable label beside the classifier seed it always wrote; a spoken negative with
+no target is its own rung, `repair-negative` (V-636, `docs/plans/22-correcting-a-turn.md`).
+Telegram is an inline keyboard under the reply, and it needed the chat to become
+readable first — **telegram is no longer outbound only** (V-637,
+`docs/plans/23-inbound-telegram.md`). The poller is dark unless the `telegram`
+block says `intake`, it long-polls because the box takes no inbound connections,
+it accepts `chat_id` and no other sender, and it drops whatever queued while the
+daemon was down. It reaches the daemon through `ipc.CoreAPI` alone, so a chat
+turn takes the path `POST /api/chat` takes. Note that the turn source is still
+`tap:text` for both, so provenance cannot tell a chat turn from a typed one.
+Adding a rung to the ladder
 in `runTurn` means adding its name to `preRouteLadder` in
 `cmd/mavend/decisiontrace.go`, or that rung is silently missing from the record.
 

cmd/mavend/actions_act.go

@@ -60,6 +60,17 @@ func (h *reactiveHandler) actionAct(ctx context.Context, dec router.Decision) st
 			phrase := actPhrase(dec.Slots.Fn, dec.Slots.Args)
 			h.park(dec.Slots.Fn, dec.Slots.Args, phrase)
 			return phraser.A(phraser.ActConfirm, map[string]string{"name": phrase})
+		case errors.Is(err, tool.ErrUnknownTarget):
+			// The verb reached a tool and the tail did not reach a target, so
+			// nothing ran. Saying which word she could not place is the whole
+			// answer: he either renames it or gives the row an alias that
+			// carries the target, and both are one turn away (V-634).
+			word := ""
+			var unknown *tool.UnknownTargetError
+			if errors.As(err, &unknown) {
+				word = unknown.Target
+			}
+			return phraser.A(phraser.ActUnknownTarget, map[string]string{"name": word})
 		case errors.Is(err, tool.ErrNeedsAuthedSurface):
 			// Irreversible (internal/tool/risk.go). A confirm turn would not
 			// help: everything that proposed this act — the STT, the router,

cmd/mavend/boot.go

@@ -0,0 +1,120 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"log"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/kami/maven/internal/event"
+	"github.com/kami/maven/internal/ipc"
+	"github.com/kami/maven/internal/store"
+)
+
+// The two boot paths meet here. run() wires the daemon twice: once at boot
+// when a key is in the environment, and once inside UnlockFn after a passkey
+// assertion, minutes or days later. Listing the same wiring in both places is
+// what let them drift — seven workers started untracked on the unlock path and
+// two daemonAPI fields were never set there, silently, for as long as anyone
+// had been cold-starting (V-639).
+//
+// So both paths call newDaemonAPI and startBackground and nothing else. A
+// field or a worker added later reaches both paths or neither.
+
+// bootDeps is everything the two constructors below read. It is filled from
+// the same variables on both paths, by depsNow in run().
+type bootDeps struct {
+	coreFor    func() ipc.CoreAPI
+	tl         *tickLoop
+	evBus      *event.Bus
+	voiceW     *voiceWiring
+	st         *store.Store
+	factWorker *factEnrichmentWorker
+	evalWorker *memoryEvalWorker // nil ⇒ memory evaluation off (the default)
+	feedWkr    *feedWorker       // nil ⇒ no feed is read (the default)
+	crawlWkr   *crawlWorker      // nil ⇒ no page is watched (the default)
+}
+
+// newDaemonAPI builds the real CoreAPI, with every field set. The unlock path
+// used to leave nexus and getMCPServers nil, so after a cold start
+// ResolveEntity refused with a nexus block configured and /tools rendered
+// "not configured" with an mcp block configured. Empty is a wrong answer
+// there, not a degraded one.
+func newDaemonAPI(d bootDeps) *daemonAPI {
+	api := &daemonAPI{
+		CoreAPI:          d.coreFor(),
+		getTrace:         d.tl.trace,
+		getMorningStatus: func(ctx context.Context) []ipc.MorningRoutineStatus { return d.tl.morningStatus(ctx, time.Now()) },
+		getDayPlan:       func(ctx context.Context) ipc.DayPlan { return d.tl.dayPlan(ctx, time.Now()) },
+		getEvents:        intakeEventsFn(d.evBus),
+		getDecisions:     turnDecisionsFn(d.voiceW),
+		seedStore:        seedStoreIfAllowed(d.st),
+		nexus:            nexusOf(d.voiceW),
+	}
+	if d.voiceW != nil && d.voiceW.handler != nil {
+		api.chatFn = d.voiceW.handler.handleText
+		// And the reverse: the handler was wired with the bare store adapter,
+		// which cannot serve the day plan. See upgradeAPI.
+		d.voiceW.handler.upgradeAPI(api)
+	}
+	if d.voiceW != nil && d.voiceW.mcp != nil {
+		api.getMCPServers = d.voiceW.mcp.status
+	}
+	return api
+}
+
+// namedWorker is one long-running goroutine. The name exists so the set is
+// assertable from a test and readable in a log; nothing dispatches on it.
+type namedWorker struct {
+	name string
+	run  func(ctx context.Context)
+}
+
+// backgroundWorkers lists what this deployment runs. It is pure — it starts
+// nothing — so a test can compare the set the two paths would start without
+// standing a daemon up.
+func backgroundWorkers(d bootDeps) []namedWorker {
+	var ws []namedWorker
+	if d.voiceW != nil && d.voiceW.server != nil {
+		ws = append(ws, namedWorker{"voice", func(context.Context) {
+			if err := d.voiceW.server.Serve(); err != nil && !errors.Is(err, net.ErrClosed) {
+				log.Printf("voice serve: %v", err)
+			}
+		}})
+	}
+	ws = append(ws,
+		namedWorker{"tick", d.tl.run},
+		namedWorker{"fact-enrichment", d.factWorker.run},
+	)
+	if d.evalWorker != nil {
+		ws = append(ws, namedWorker{"memory-eval", d.evalWorker.run})
+	}
+	if d.feedWkr != nil {
+		ws = append(ws, namedWorker{"feed", d.feedWkr.run})
+	}
+	if d.crawlWkr != nil {
+		ws = append(ws, namedWorker{"crawl", d.crawlWkr.run})
+	}
+	if d.voiceW != nil && d.voiceW.mcp != nil {
+		ws = append(ws, namedWorker{"mcp", d.voiceW.mcp.run})
+	}
+	if d.voiceW != nil && d.voiceW.home != nil {
+		ws = append(ws, namedWorker{"home", d.voiceW.home.run})
+	}
+	return ws
+}
+
+// startBackground starts every worker through goWorker, so waitWorkers can
+// wait for it at shutdown. A worker started as a bare `go func()` is the
+// shutdown bug documented at the end of run(): run() never returns, the
+// deferred Close never seals the database, and the ciphertext goes stale.
+func startBackground(ctx context.Context, wg *sync.WaitGroup, d bootDeps) {
+	for _, w := range backgroundWorkers(d) {
+		goWorker(wg, func() { w.run(ctx) })
+	}
+	if d.voiceW != nil && d.voiceW.server != nil {
+		log.Printf("mavend: voice listening on %s", d.voiceW.server.Addr())
+	}
+}

cmd/mavend/boot_test.go

@@ -0,0 +1,96 @@
+package main
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/kami/maven/internal/decision"
+	"github.com/kami/maven/internal/event"
+	"github.com/kami/maven/internal/ipc"
+	"github.com/kami/maven/internal/store"
+	"github.com/kami/maven/internal/voice"
+)
+
+// fullDeps — a deployment with every optional piece present. Nothing here is
+// run: newDaemonAPI takes method values and backgroundWorkers is pure, so
+// zero-value wirings are enough to say what WOULD be started.
+func fullDeps() bootDeps {
+	h := &reactiveHandler{
+		ecosystem: &ecosystemWiring{nexus: &nexusClient{}},
+		decisions: decision.NewRing(),
+	}
+	return bootDeps{
+		coreFor:    func() ipc.CoreAPI { return ipc.UnimplementedCoreAPI{} },
+		tl:         &tickLoop{},
+		evBus:      event.NewBus(4),
+		st:         &store.Store{},
+		factWorker: &factEnrichmentWorker{},
+		evalWorker: &memoryEvalWorker{},
+		feedWkr:    &feedWorker{},
+		crawlWkr:   &crawlWorker{},
+		voiceW: &voiceWiring{
+			server:  &voice.Server{},
+			handler: h,
+			mcp:     &mcpWiring{},
+			home:    &homeWiring{},
+		},
+	}
+}
+
+// The unlock path used to build its own daemonAPI literal and leave nexus and
+// getMCPServers nil (V-639). Both paths call newDaemonAPI now, so the drift
+// that can still happen is a field added to the struct and not to the
+// constructor. This catches that one, by name.
+func TestNewDaemonAPISetsEveryField(t *testing.T) {
+	prev := allowSeedOnStart
+	allowSeedOnStart = true
+	defer func() { allowSeedOnStart = prev }()
+
+	api := newDaemonAPI(fullDeps())
+	v := reflect.ValueOf(*api)
+	for i := range v.NumField() {
+		if v.Field(i).IsZero() {
+			t.Errorf("newDaemonAPI left %s unset — a fully wired deployment must fill every field", v.Type().Field(i).Name)
+		}
+	}
+}
+
+// The handler is wired with the bare store adapter and cannot serve the day
+// plan until upgradeAPI hands it the real one. The unlocked path did that and
+// the unlock path did it too; keep it a property of the constructor.
+func TestNewDaemonAPIUpgradesTheHandler(t *testing.T) {
+	d := fullDeps()
+	api := newDaemonAPI(d)
+	if d.voiceW.handler.api != ipc.CoreAPI(api) {
+		t.Fatal("newDaemonAPI did not hand the handler the API it built")
+	}
+}
+
+// Every worker the daemon runs goes through startBackground, so shutdown can
+// wait for it. The unlock path used to start seven of these as bare
+// `go func()` under a shadowed WaitGroup.
+func TestBackgroundWorkersFullSet(t *testing.T) {
+	want := []string{"voice", "tick", "fact-enrichment", "memory-eval", "feed", "crawl", "mcp", "home"}
+	var got []string
+	for _, w := range backgroundWorkers(fullDeps()) {
+		got = append(got, w.name)
+	}
+	if !reflect.DeepEqual(got, want) {
+		t.Errorf("workers = %v, want %v", got, want)
+	}
+}
+
+// A default box configures none of the optional blocks. Two workers always run
+// and the rest stay dark, rather than a nil run being scheduled.
+func TestBackgroundWorkersFloor(t *testing.T) {
+	d := fullDeps()
+	d.evalWorker, d.feedWkr, d.crawlWkr, d.voiceW = nil, nil, nil, nil
+	want := []string{"tick", "fact-enrichment"}
+	var got []string
+	for _, w := range backgroundWorkers(d) {
+		got = append(got, w.name)
+	}
+	if !reflect.DeepEqual(got, want) {
+		t.Errorf("workers = %v, want %v", got, want)
+	}
+}

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.

cmd/mavend/decisiontrace.go

@@ -31,7 +31,8 @@ import (
 // and nothing should: a missing name costs one line of the record, while a
 // check that walks the ladder would have to run the ladder.
 var preRouteLadder = []string{
-	"confirm", "clarify-answer", "quiet-toggle", "snooze", "ack", "repair", "ordinal",
+	"confirm", "clarify-answer", "quiet-toggle", "snooze", "ack", "repair",
+	"repair-negative", "ordinal",
 }
 
 // notePreRoute records one rung of that ladder and passes its verdict through

cmd/mavend/factenrichment.go

@@ -37,8 +37,8 @@ type factEnrichmentWorker struct {
 	nextTry map[int64]time.Time // fact id → earliest retry
 }
 
-// enrichmentScanLimit bounds how deep a single tick (or status report) walks
-// the pending queue looking for facts whose backoff has elapsed. The queue is
+// enrichmentScanLimit bounds how deep a single tick walks the pending queue
+// looking for facts whose backoff has elapsed. The queue is
 // ordered by id, so without a scan the oldest facts hold every batch slot
 // whether or not they are eligible, and one permanently failing fact stalls
 // every younger one behind it.
@@ -75,8 +75,8 @@ func newFactEnrichmentWorker(st *store.Store, eco *ecosystemWiring, interval tim
 // has been down all day must be visible as a backlog, not as facts that
 // silently never got tagged.
 //
-// All three numbers describe the same set of rows, the first
-// enrichmentScanLimit pending facts. Counting Pending over a thousand rows
+// All three numbers describe the same set of rows, whatever is still pending
+// out of the first enrichmentScanLimit facts. Counting Pending over a thousand rows
 // while counting InBackoff over the twenty that reached the head of a batch
 // described two different populations under one struct.
 type enrichmentStatus struct {
@@ -86,13 +86,22 @@ type enrichmentStatus struct {
 	Scanned     int // rows the other three counts were taken over
 }
 
+// status reads the queue and counts over it. For a caller with no batch in
+// hand — anything asking the worker how it is doing from outside the tick.
 func (w *factEnrichmentWorker) status(ctx context.Context) enrichmentStatus {
-	var st enrichmentStatus
 	pending, err := w.store.PendingFactResolutions(ctx, enrichmentScanLimit)
 	if err != nil {
 		log.Printf("factenrichment: status: %v", err)
-		return st
+		return enrichmentStatus{}
 	}
+	return w.statusOf(pending)
+}
+
+// statusOf counts over a batch the caller already has. The batch is the query
+// the tick already ran, so reporting the backlog costs no second read of the
+// scan limit — up to a thousand rows, on a database that serialises them.
+func (w *factEnrichmentWorker) statusOf(pending []store.Fact) enrichmentStatus {
+	var st enrichmentStatus
 	st.Pending = len(pending)
 	st.Scanned = len(pending)
 	w.mu.Lock()
@@ -144,17 +153,24 @@ func (w *factEnrichmentWorker) tick(ctx context.Context) {
 	}
 	w.forgetDeparted(pending)
 	skipped, failed, attempted := 0, 0, 0
+	// A resolved fact leaves the pending queue, so the batch in hand overstates
+	// the backlog by however many succeeded. Drop them here rather than
+	// re-reading the queue to find out.
+	remaining := make([]store.Fact, 0, len(pending))
 	for _, f := range pending {
 		if attempted >= w.batch {
-			break
+			remaining = append(remaining, f)
+			continue
 		}
 		if !w.due(f.ID) {
 			skipped++
+			remaining = append(remaining, f)
 			continue
 		}
 		attempted++
 		if !w.resolveOne(ctx, f) {
 			failed++
+			remaining = append(remaining, f)
 		}
 	}
 	if failed > 0 {
@@ -164,7 +180,7 @@ func (w *factEnrichmentWorker) tick(ctx context.Context) {
 	// Report the backlog every tick, not only when something failed: the
 	// stalled state worth seeing is the one where nothing failed because
 	// nothing was attempted.
-	if st := w.status(ctx); st.Pending > 0 {
+	if st := w.statusOf(remaining); st.Pending > 0 {
 		log.Printf("factenrichment: %d facts pending entity resolution, %d in backoff, worst attempt %d (scanned %d)",
 			st.Pending, st.InBackoff, st.MaxAttempts, st.Scanned)
 	}

cmd/mavend/main.go

@@ -252,6 +252,23 @@ func run(args []string) error {
 	// envelope per successful intake write.
 	coreFor := func() ipc.CoreAPI { return newIntakeAPI(ipc.NewStoreAPI(st), evBus, time.Now) }
 
+	// depsNow reads whatever the current path has wired. Both boot paths build
+	// the CoreAPI and start the workers from this one value, so neither can
+	// hold a field the other misses. See cmd/mavend/boot.go.
+	depsNow := func() bootDeps {
+		return bootDeps{
+			coreFor:    coreFor,
+			tl:         tl,
+			evBus:      evBus,
+			voiceW:     voiceW,
+			st:         st,
+			factWorker: factWorker,
+			evalWorker: evalWorker,
+			feedWkr:    feedWkr,
+			crawlWkr:   crawlWkr,
+		}
+	}
+
 	if !locked {
 		rules = wireRules(cfg)
 		gatherer = wireGatherer(st, cfg, rules)
@@ -284,26 +301,7 @@ func run(args []string) error {
 		feedWkr = newFeedWorker(coreFor(), embedderOf(voiceW), cfg)
 		crawlWkr = newCrawlWorker(newCrawler(cfg), coreFor(), embedderOf(voiceW), cfg)
 
-		coreAPI = &daemonAPI{
-			CoreAPI:          coreFor(),
-			getTrace:         tl.trace,
-			getMorningStatus: func(ctx context.Context) []ipc.MorningRoutineStatus { return tl.morningStatus(ctx, time.Now()) },
-			getDayPlan:       func(ctx context.Context) ipc.DayPlan { return tl.dayPlan(ctx, time.Now()) },
-			getEvents:        intakeEventsFn(evBus),
-			getDecisions:     turnDecisionsFn(voiceW),
-			seedStore:        seedStoreIfAllowed(st),
-			nexus:            nexusOf(voiceW),
-		}
-		if voiceW != nil && voiceW.handler != nil {
-			api := coreAPI.(*daemonAPI)
-			api.chatFn = voiceW.handler.handleText
-			// And the reverse: the handler was wired with the bare store
-			// adapter, which cannot serve the day plan. See upgradeAPI.
-			voiceW.handler.upgradeAPI(api)
-		}
-		if voiceW != nil && voiceW.mcp != nil {
-			coreAPI.(*daemonAPI).getMCPServers = voiceW.mcp.status
-		}
+		coreAPI = newDaemonAPI(depsNow())
 	} else {
 		// locked mode: no real store yet, so there's no meaningful CoreAPI to
 		// serve. srv.Check below is the actual guard — every CoreAPI call is
@@ -364,6 +362,9 @@ func run(args []string) error {
 	if !locked {
 		wireMailIntake(srv, st, phr, cfg, evBus)
 		wireModelSwap(srv, phr, cfg)
+		// Inbound telegram (V-637). Dark unless the telegram block says intake,
+		// and it reads one chat.
+		wireTelegramIntake(ctx, &wg, coreAPI, cfg)
 		// Vision + the media blob store (Vikunja #252). Both stay dark without a
 		// media block; MethodDescribeImage answers ErrUnknownMethod then.
 		keeper := wireVision(ctx, &wg, srv, st, embedderOf(voiceW), cfg)
@@ -494,23 +495,14 @@ func run(args []string) error {
 			crawlWkr = newCrawlWorker(newCrawler(cfg), coreFor(), embedderOf(voiceW), cfg)
 
 			// Swap the CoreAPI from the locked placeholder to the real store adapter.
-			newAPI := &daemonAPI{
-				CoreAPI:          coreFor(),
-				getTrace:         tl.trace,
-				getMorningStatus: func(ctx context.Context) []ipc.MorningRoutineStatus { return tl.morningStatus(ctx, time.Now()) },
-				getDayPlan:       func(ctx context.Context) ipc.DayPlan { return tl.dayPlan(ctx, time.Now()) },
-				getEvents:        intakeEventsFn(evBus),
-				getDecisions:     turnDecisionsFn(voiceW),
-				seedStore:        seedStoreIfAllowed(st),
-			}
-			if voiceW != nil && voiceW.handler != nil {
-				newAPI.chatFn = voiceW.handler.handleText
-				voiceW.handler.upgradeAPI(newAPI)
-			}
+			newAPI := newDaemonAPI(depsNow())
 			srv.SetAPI(newAPI)
 			srv.Check = (&auth.Gate{Enrollment: auth.NewFloorEnrollment(), Session: passkeySess}).Check
 			wireMailIntake(srv, st, phr, cfg, evBus)
 			wireModelSwap(srv, phr, cfg)
+			// Same on the unlock path, with the API that has just replaced the
+			// locked placeholder (V-637).
+			wireTelegramIntake(ctx, &wg, newAPI, cfg)
 			keeper := wireVision(ctx, &wg, srv, st, embedderOf(voiceW), cfg)
 			wireCapture(ctx, &wg, srv, keeper, st, voiceW, phr, cfg)
 			// Voice identification (Vikunja #255). Enrolment plumbing only until a
@@ -518,59 +510,10 @@ func run(args []string) error {
 			// block, so no wire path takes a voiceprint on a default box.
 			wireSpeaker(srv, st, cfg)
 
-			// Start voice server.
-			if voiceW != nil {
-				var wg sync.WaitGroup
-				wg.Add(1)
-				go func() {
-					defer wg.Done()
-					if err := voiceW.server.Serve(); err != nil && !errors.Is(err, net.ErrClosed) {
-						log.Printf("voice serve: %v", err)
-					}
-				}()
-				log.Printf("mavend: voice listening on %s", voiceW.server.Addr())
-			}
-
-			// Start tick loop.
-			go func() {
-				tl.run(ctx)
-			}()
-
-			// Start fact-entity enrichment worker.
-			go func() {
-				factWorker.run(ctx)
-			}()
-
-			// Start background memory evaluation (nil unless configured).
-			if evalWorker != nil {
-				go func() {
-					evalWorker.run(ctx)
-				}()
-			}
-
-			// Start feed reading (nil unless configured).
-			if feedWkr != nil {
-				go func() {
-					feedWkr.run(ctx)
-				}()
-			}
-
-			// Start the watched-page crawls (nil unless configured).
-			if crawlWkr != nil {
-				go func() {
-					crawlWkr.run(ctx)
-				}()
-			}
-
-			// Keep MCP connections alive (nil unless configured).
-			if voiceW != nil && voiceW.mcp != nil {
-				go voiceW.mcp.run(ctx)
-			}
-
-			// Re-enumerate the house for new devices (nil unless configured).
-			if voiceW != nil && voiceW.home != nil {
-				go voiceW.home.run(ctx)
-			}
+			// The voice server and every background worker, on the outer wg
+			// so shutdown waits for them. This used to be nine bare
+			// `go func()` calls and a shadowed WaitGroup (V-639).
+			startBackground(ctx, &wg, depsNow())
 
 			dl.unlock(st)
 			log.Printf("mavend: unlocked via passkey assertion")
@@ -585,33 +528,8 @@ func run(args []string) error {
 	})
 	log.Printf("mavend: ipc listening on %s", srv.Path())
 
-	if !locked && voiceW != nil {
-		goWorker(&wg, func() {
-			if err := voiceW.server.Serve(); err != nil && !errors.Is(err, net.ErrClosed) {
-				log.Printf("voice serve: %v", err)
-			}
-		})
-		log.Printf("mavend: voice listening on %s", voiceW.server.Addr())
-	}
-
 	if !locked {
-		goWorker(&wg, func() { tl.run(ctx) })
-		goWorker(&wg, func() { factWorker.run(ctx) })
-		if evalWorker != nil {
-			goWorker(&wg, func() { evalWorker.run(ctx) })
-		}
-		if feedWkr != nil {
-			goWorker(&wg, func() { feedWkr.run(ctx) })
-		}
-		if crawlWkr != nil {
-			goWorker(&wg, func() { crawlWkr.run(ctx) })
-		}
-		if voiceW != nil && voiceW.mcp != nil {
-			goWorker(&wg, func() { voiceW.mcp.run(ctx) })
-		}
-		if voiceW != nil && voiceW.home != nil {
-			goWorker(&wg, func() { voiceW.home.run(ctx) })
-		}
+		startBackground(ctx, &wg, depsNow())
 	}
 
 	<-ctx.Done()

cmd/mavend/repair.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/kami/maven/internal/lexicon"
 	"github.com/kami/maven/internal/morph"
+	"github.com/kami/maven/internal/phraser"
 	"github.com/kami/maven/internal/router"
 )
 
@@ -35,6 +36,11 @@ type routedTurn struct {
 	utterance string
 	intent    router.Intent
 	at        time.Time
+	// traceID — the persisted trace of this turn, stamped after the fact by
+	// stampLastTurn. 0 when nothing persisted, and then a spoken correction
+	// still teaches the classifier: the durable label is the half that needs a
+	// row to point at (V-636).
+	traceID int64
 }
 
 // repairWindow — how long a turn stays correctable. Long enough that he can
@@ -54,6 +60,13 @@ const repairWindow = 5 * time.Minute
 // said. The set's note in lexicon_ru_v1.json carries the same reasoning.
 var repairMarkers = lexicon.RepairMarkers()
 
+// repairNegatives — "she got it wrong" with no target. Matched against the whole
+// utterance, because these are complete sentences and the markers above are
+// fragments: "это не" needs an intent word after it, "не так поняла" does not.
+// Substring matching here would claim "не так" out of any sentence containing it
+// (V-636).
+var repairNegatives = lexicon.RepairNegatives()
+
 // repairIntents — the words he uses for each intent, as dictionary forms. They
 // used to be prefixes ("заметк"), which is what a prefix list costs: "команд"
 // also matched "командировка", and "факт" matched "фактически". morph.SameWord
@@ -147,6 +160,18 @@ func (h *reactiveHandler) recordTurn(utterance string, intent router.Intent) {
 	h.lastRouted = &routedTurn{utterance: utterance, intent: intent, at: h.now()}
 }
 
+// stampLastTurn attaches the trace id to the turn a correction would point at.
+// It cannot be done in recordTurn: the trace is written when the turn ends, and
+// recordTurn runs in the middle of it.
+func (h *reactiveHandler) stampLastTurn(utterance string, traceID int64) {
+	h.mu.Lock()
+	defer h.mu.Unlock()
+	if h.lastRouted == nil || h.lastRouted.utterance != utterance {
+		return
+	}
+	h.lastRouted.traceID = traceID
+}
+
 func (h *reactiveHandler) takeLastTurn() *routedTurn {
 	h.mu.Lock()
 	defer h.mu.Unlock()
@@ -157,6 +182,56 @@ func (h *reactiveHandler) takeLastTurn() *routedTurn {
 	return last
 }
 
+// resolveUntargetedRepair handles the cheap half of a spoken correction: he says
+// she got it wrong and does not say what it should have been (V-636).
+//
+// It is worth having on its own. V-630 made the target optional on the web for
+// the same reason: a turn marked wrong with no target is a usable negative, and
+// requiring the target would cost the correction he was willing to give. Voice
+// needs it more than the web does — naming an intent aloud means saying
+// "заметка" or "факт", which is Maven's vocabulary and not his.
+//
+// Nothing is redone and the classifier is not taught. There is no target, so
+// there is nothing to redo it as and nothing to teach. Only the label is written,
+// and she says so, because a correction he cannot see reads as one that was
+// dropped.
+func (h *reactiveHandler) resolveUntargetedRepair(ctx context.Context, text string) (string, bool) {
+	if !isRepairNegative(text) {
+		return "", false
+	}
+	last := h.takeLastTurn()
+	if last == nil || h.now().Sub(last.at) > repairWindow {
+		return "", false
+	}
+	if last.traceID == 0 {
+		// No row to point at, so there is no label to write and nothing this
+		// resolver can do. Routing the words normally is the honest outcome.
+		return "", false
+	}
+	h.labelCorrection(ctx, last, "")
+	log.Printf("voice: repair — %q marked wrong, no target given", last.utterance)
+	return phraser.A(phraser.RepairNoted, nil), true
+}
+
+// isRepairNegative matches the whole utterance, minus a leading "нет" and any
+// trailing punctuation. "нет, не так" is the shortest one he says.
+func isRepairNegative(utterance string) bool {
+	s := strings.ToLower(strings.TrimSpace(utterance))
+	s = strings.TrimRight(s, " .!?")
+	for _, p := range []string{"нет,", "нет", "no,", "no"} {
+		if rest := strings.TrimSpace(strings.TrimPrefix(s, p)); rest != s && rest != "" {
+			s = rest
+			break
+		}
+	}
+	for _, n := range repairNegatives {
+		if s == n {
+			return true
+		}
+	}
+	return false
+}
+
 // resolveRepair handles a spoken correction of the previous turn: teach the
 // classifier, redo the request under the corrected intent, and say so.
 func (h *reactiveHandler) resolveRepair(ctx context.Context, text string) (string, bool) {
@@ -182,6 +257,7 @@ func (h *reactiveHandler) resolveRepair(ctx context.Context, text string) (strin
 		learned = false
 	}
 	log.Printf("voice: repair — %q was %s, corrected to %s (learned=%v)", last.utterance, last.intent, corrected, learned)
+	h.labelCorrection(ctx, last, string(corrected))
 
 	dec := router.Decision{
 		Utterance: last.utterance,
@@ -207,3 +283,24 @@ func repairLine(say string, learned bool) string {
 	}
 	return "поняла, это " + say + " — запомнила."
 }
+
+// labelCorrection promotes a spoken correction into routing_labels, the same
+// table the /chat gesture writes (V-630, V-636).
+//
+// Two sinks and not one, because they keep different things. CorrectMisroute
+// appends a classifier seed, which is what makes the NEXT turn better today.
+// The label is what a fitted head trains on later, it survives the 14-day
+// transcript, and until now only the web produced any. A sample that only ever
+// held typed turns would skew to whatever he happens to be at a keyboard for,
+// and voice is where the hard cases are.
+//
+// Best-effort and silent. He has already been told the correction landed, and a
+// second sink failing is not his problem to hear about.
+func (h *reactiveHandler) labelCorrection(ctx context.Context, last *routedTurn, shouldBe string) {
+	if h.api == nil || last == nil || last.traceID == 0 {
+		return
+	}
+	if err := h.api.CorrectTurn(ctx, last.traceID, shouldBe); err != nil {
+		log.Printf("voice: repair: could not label trace %d: %v", last.traceID, err)
+	}
+}

cmd/mavend/repair_test.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/kami/maven/internal/router"
+	"github.com/kami/maven/internal/store"
 )
 
 func TestParseRepairReadsTheCorrectedIntent(t *testing.T) {
@@ -149,3 +150,95 @@ func TestRepairIntentWordCollisions(t *testing.T) {
 		}
 	}
 }
+
+// V-636. A spoken correction lands in the same table the /chat gesture writes,
+// so the sample is not limited to the turns he happened to type.
+func TestSpokenCorrectionWritesTheLabel(t *testing.T) {
+	h, st, _ := newClarifyHandler(t)
+	emb := router.NewHashEmbedder(256)
+	h.recall.embedder = emb
+	h.router = router.New(router.Config{Classifier: router.NewClassifier(emb), Extractor: h.extractor})
+	ctx := context.Background()
+
+	id, err := st.WriteRoutingTrace(ctx, store.RoutingTrace{
+		Ts: h.now(), Utterance: "купить хлеб", Intent: "fact", Source: "tap:voice",
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	h.recordTurn("купить хлеб", router.IntentFact)
+	h.stampLastTurn("купить хлеб", id)
+
+	if _, handled := h.resolveRepair(ctx, "нет, это заметка"); !handled {
+		t.Fatal("the correction was not handled")
+	}
+	labels, err := st.RoutingLabels(ctx, 5)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(labels) != 1 || labels[0].Was != "fact" || labels[0].ShouldBe != "note" {
+		t.Fatalf("labels %+v: the spoken correction did not land as a pair", labels)
+	}
+}
+
+// The cheap half, which voice needs more than the web does: naming an intent
+// aloud means saying "заметка", which is her vocabulary and not his.
+func TestUntargetedSpokenCorrection(t *testing.T) {
+	h, st, now := newClarifyHandler(t)
+	ctx := context.Background()
+	seed := func(utterance string) int64 {
+		id, err := st.WriteRoutingTrace(ctx, store.RoutingTrace{
+			Ts: h.now(), Utterance: utterance, Intent: "query", Source: "tap:voice",
+		})
+		if err != nil {
+			t.Fatal(err)
+		}
+		h.recordTurn(utterance, router.IntentQuery)
+		h.stampLastTurn(utterance, id)
+		return id
+	}
+
+	seed("поужинал")
+	reply, handled := h.resolveUntargetedRepair(ctx, "нет, не так")
+	if !handled {
+		t.Fatal("«нет, не так» was not read as a correction")
+	}
+	if reply == "" {
+		t.Error("a correction he cannot hear reads as one that was dropped")
+	}
+	labels, err := st.RoutingLabels(ctx, 5)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(labels) != 1 || labels[0].ShouldBe != "" || labels[0].Was != "query" {
+		t.Fatalf("labels %+v: want one untargeted negative naming what she chose", labels)
+	}
+
+	// Outside the window it is a fresh sentence, not a verdict.
+	seed("поужинал ещё раз")
+	*now = now.Add(repairWindow + time.Minute)
+	if _, handled := h.resolveUntargetedRepair(ctx, "не так"); handled {
+		t.Error("a correction outside the window was handled")
+	}
+}
+
+// Whole-utterance, never a substring. This is the difference between the
+// negatives and the markers, and getting it wrong would claim any sentence with
+// "не так" in it.
+func TestRepairNegativeIsTheWholeUtterance(t *testing.T) {
+	for _, s := range []string{
+		"не так поняла", "нет, не так", "ты ошиблась", "неправильно", "wrong", "no, that was wrong",
+	} {
+		if !isRepairNegative(s) {
+			t.Errorf("%q is not read as a correction", s)
+		}
+	}
+	for _, s := range []string{
+		"это не важно", "напомни не так поздно", "а не завтра", "не так, а вот так — это заметка",
+		"", "нет",
+	} {
+		if isRepairNegative(s) {
+			t.Errorf("%q was read as a correction", s)
+		}
+	}
+}

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
 }

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)
 	}

cmd/mavend/routingtrace.go

@@ -134,6 +134,10 @@ func (h *reactiveHandler) persistDecision(turnCtx context.Context, rec *decision
 	// on the turn it is already showing (V-630). Noted on the ORIGINAL context,
 	// not the detached one above: the sink belongs to the caller's turn.
 	noteTraceID(turnCtx, id)
+	// And the spoken path, which has no reply to hang a badge on: a correction
+	// said out loud points at the previous turn, so it needs that turn's row
+	// (V-636, repair.go).
+	h.stampLastTurn(rec.Utterance, id)
 }
 
 // wonIntent — what the winning claimant made the turn. Read from the claim

cmd/mavend/telegramintake.go

@@ -0,0 +1,59 @@
+// mavend/telegramintake.go — wiring the inbound telegram poller (V-637).
+//
+// The poller reaches the daemon through ipc.CoreAPI and nothing else, so a
+// telegram turn takes exactly the path the web's POST /api/chat takes: Chat
+// returns the reply and the persisted trace id, and CorrectTurn writes the
+// label. Nothing in internal/delivery knows what a handler is.
+package main
+
+import (
+	"context"
+	"log"
+	"sync"
+
+	"github.com/kami/maven/internal/config"
+	"github.com/kami/maven/internal/delivery/telegramsink"
+	"github.com/kami/maven/internal/ipc"
+)
+
+// wireTelegramIntake starts the poller, or returns having done nothing. It is
+// nil-safe in every argument, because it is called from both boot paths — the
+// unlocked start and the passkey unlock — and telegram must behave the same on
+// either.
+//
+// A sink that will not build is logged rather than fatal here. The push half
+// already failed the boot in wireDispatcher for the same config, so a second
+// hard failure would only lose that message.
+func wireTelegramIntake(ctx context.Context, wg *sync.WaitGroup, api ipc.CoreAPI, cfg *config.Config) {
+	if cfg == nil || cfg.Telegram == nil || !cfg.Telegram.Intake || api == nil {
+		return
+	}
+	sink, err := telegramsink.New(*cfg.Telegram)
+	if err != nil {
+		log.Printf("telegram intake: %v", err)
+		return
+	}
+	poller, err := telegramsink.NewPoller(sink, chatTurnFn(api), api.CorrectTurn)
+	if err != nil {
+		log.Printf("telegram intake: %v", err)
+		return
+	}
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		poller.Run(ctx)
+	}()
+}
+
+// chatTurnFn adapts ipc.Chat to the poller's Turn. The trace id comes back on
+// the reply because the daemon's Chat collects it off the context (V-630), so
+// the chat can offer the same correction the web does without a second op.
+func chatTurnFn(api ipc.CoreAPI) telegramsink.Turn {
+	return func(ctx context.Context, conversation, text string) (string, int64, error) {
+		reply, err := api.Chat(ctx, conversation, text)
+		if err != nil {
+			return "", 0, err
+		}
+		return reply.Reply, reply.TraceID, nil
+	}
+}

cmd/mavend/voice.go

@@ -365,6 +365,14 @@ func (h *reactiveHandler) runTurn(ctx context.Context, text string, src turnSour
 		return withNotice(expiredNotice, reply)
 	}
 
+	// 4d-ii. and the same correction without a target — "нет, не так" (V-636).
+	// After the targeted one, which is the narrower claim: an utterance that
+	// names an intent is answered by redoing the request, and this rung only
+	// gets the ones that name nothing.
+	if reply, handled := h.resolveUntargetedRepair(ctx, text); notePreRoute(ctx, "repair-negative", handled) {
+		return withNotice(expiredNotice, reply)
+	}
+
 	// 4e. ordinal selection — "второй", "первую сделал" pick from the list she
 	// just read (ordinal.go). Before routing, and only when a list is actually
 	// bound to the session: with nothing offered, "второй" is an ordinary word
@@ -450,7 +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)
 }

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) {

deploy/mavend.json

@@ -37,7 +37,15 @@
       "This needs a matching ufw rule or the container's SYN is dropped:",
       "  ufw allow from 192.168.240.0/20 to any port 10808 proto tcp"
     ],
-    "proxy": "socks5://192.168.240.1:10808"
+    "proxy": "socks5://192.168.240.1:10808",
+    "//intake": [
+      "Read the chat as well as write to it (V-637). The poller long-polls",
+      "getUpdates through the same relay and accepts chat_id as the only",
+      "sender. Deleting this key turns inbound off again.",
+      "chat_id must be numeric here or the daemon refuses to start: an inbound",
+      "update names its chat by number, so an @-name would match nothing."
+    ],
+    "intake": true
   },
 
   "//workstation": [

docs/evals/2026-08-06-routing-trajectory.md

@@ -0,0 +1,71 @@
+# The routing trajectory, and the number that is missing
+
+**06-08-2026. V-464.** Not a new measurement. This collates the figures already recorded
+in `docs/evals/` and CLAUDE.md, and names one measurement that has not been taken. Dated
+because the conclusion expires the moment the missing number is measured.
+
+## The question
+
+126 of the 1023 commits between 03-07-2026 and 06-08-2026 touch `internal/router`. Is the
+routing between the core functions and his speech getting better?
+
+## The trajectory
+
+RU routing fixture, classifier plus the ONNX embedder, no LLM arm in any of these runs.
+
+| date | change | fixture | source |
+|---|---|---|---|
+| 02-08-2026 | classifier re-measured | 68.8% of 77 | CLAUDE.md |
+| 04-08-2026 | V-498, rest-of-day and narrative rules | 58/82, 70.7% | CLAUDE.md |
+| 06-08-2026 | V-626 baseline | 64/91, 70.3% | `2026-08-06-seeds-to-prompt-boundary.md` |
+| 06-08-2026 | V-626, seeds onto the prompt boundary | 66/91, 72.5% | same |
+| 06-08-2026 | V-627, alarm verbs reach stage 0 | 69/91, 75.8% | `2026-08-06-alarm-verbs-reach-stage-0.md` |
+| 06-08-2026 | V-633, Russian acts reach tools | 69/91, unchanged | `2026-08-06-russian-acts-reach-tools.md` |
+
+The fixture grew from 77 to 82 to 91 cases across this window. So the percentages are
+comparable and the counts are not.
+
+## Accuracy moved late
+
+It sat near 70% for a month. V-626 and V-627 landed the same day and took the
+deterministic path from 64/91 to 69/91. That is the first real accuracy movement since the
+stage-0 rules went in.
+
+## Most of the work was reach, not accuracy
+
+Praxis went 0/12 to 11/12 and lifecycle 0/5 to 5/5 (V-516,
+`2026-08-05-praxis-reach.md`). No Russian utterance could reach a tool before V-633. That
+one landed at 69/91 unchanged, because the fixture holds no case for it. Alarm verbs,
+ordinal selection, spoken corrections and the claimant ladder share the shape.
+
+So the fixture undercounts the month. Things that were structurally unreachable now reach,
+and a fixture that never asked about them cannot show it. Judge reach against
+`make eval-reach` and the ecosystem fixture, not against the routing one.
+
+## The missing number
+
+On 05-08-2026 the cascade with the resident model scored 69/91, 75.8% full, 80.2%
+intent-only, at p50 1.19s (`2026-08-05-routing-resident-model.md`).
+
+On 06-08-2026 the classifier and stage 0 alone reached 69/91, 75.8% full, at p50 22.9ms.
+
+Those are the same full-accuracy score. The cascade has not been re-measured since V-626
+and V-627 landed. Both are stage-0 changes, and stage 0 runs inside the cascade, so the
+cascade should have gained from them too.
+
+One of two things is true, and nothing on the box says which:
+
+- The cascade gained as well, the model still separates from the floor on intent-only, and
+  it earns its place.
+- The deterministic floor has caught up on this fixture, and the resident model is costing
+  1.17 seconds a turn for nothing measurable.
+
+Take that measurement before planning more routing work. It needs a second llama-server on
+a fixed host port, because the resident one binds `--port 0` inside the container.
+
+## What this does not settle
+
+Intent-only is the more honest comparison for the model arm. The model routes `reminder`
+and leaves the time to the daemon, which is what the contract asks. The 05-08 run puts it
+at 80.2% through the cascade and 61.5% for the model alone. There is no 06-08 intent-only
+figure for the deterministic path to set beside those.

docs/evals/2026-08-07-store-connection-cap.md

@@ -0,0 +1,69 @@
+# Does one sqlite connection make reads queue? No (V-642)
+
+Measured 07-08-2026 at `7b507de`, on homesrv. The harness is
+`internal/store/conncap_test.go`. It stays in the repo, because this claim gets
+re-argued and the numbers should be re-runnable rather than quoted.
+
+`internal/store/store.go` opens the database with `SetMaxOpenConns(1)`, while
+`schema.sql` sets `journal_mode=WAL`. WAL exists to let readers run beside one
+writer, so the cap gives up the thing the journal mode was chosen for. The
+question was whether that costs anything.
+
+## What was measured
+
+A fixed two-second window. One writer calling `SetValue` paced at 2ms, and a
+reader loop calling `RecentFacts(50)` over 500 seeded rows as fast as it can.
+Same schema, same modernc driver, same machine, three runs per cap.
+
+The window is wall-clock rather than a read count on purpose. A first version ran
+a fixed 300 reads. That finished sooner at the higher cap, so it received fewer
+writes, and two runs that did different work cannot be compared.
+
+| cap | reads | writes | p50 | p95 | max |
+|---|---|---|---|---|---|
+| 1 | ~3050 | ~760 | 594µs | 900µs | 16-19ms |
+| 4 | ~3600 | ~340 | 525µs | 710µs | 1-2ms |
+
+## What it says
+
+**Reads do not queue behind writes.** Four connections buy about 70µs at p50. A
+turn spends 1.19s in the resident model. The tail does improve, from 19ms to 2ms,
+and 19ms is still not a figure anyone notices in a spoken reply.
+
+**Write throughput more than halves at the higher cap**, 760 writes against 340.
+inference, not measured directly: at one connection the reader and the writer take
+turns with no lock contention. At four the writer contends for the WAL write lock
+with a live reader. Whatever the mechanism, the trade runs the opposite way from
+the one the task expected.
+
+**The cap was not the source of the 2.7s router figure.** CLAUDE.md records that
+figure as contention rather than the model. This task was a candidate for where
+that contention came from. A 19ms worst case cannot produce it. That line of
+enquiry is closed.
+
+**One transaction is what the cap cannot survive.** With a read-only transaction
+open, a second read at cap 1 never completes. The harness gave it two seconds and
+got `context deadline exceeded`. The same read at cap 4 took 1ms. The transaction
+holds the only connection, so this is not a slow read, it is a stalled database.
+
+## What was done
+
+The cap stays at 1. The reason is now written where the cap is set, rather than
+inferred from a four-word comment.
+
+`Store.DB` was deleted. It handed out exactly the read-only transaction measured
+above. It had been there since the initial commit with no production caller, and
+its doc comment described a loop that never materialised. Its one user was a test
+helper reading `delivery_attempts` by raw SQL. `ListDeliveryAttempts` has covered
+that since V-390, and the helper now goes through the reader.
+
+So the hazard is gone by construction, not by documentation.
+`TestConnCap_ReadBlocksBehindOpenSnapshot` is the standing measurement of what
+re-adding the seam would cost.
+
+## Not answered
+
+Whether reads queue on the deployed box under real load, as opposed to a
+synthetic loop. The harness writes and reads one table. Digestion reads four and
+embeds while it does. The finding that closes this task is the transaction stall,
+which is structural and does not depend on load.

docs/plans/23-inbound-telegram.md

@@ -0,0 +1,70 @@
+# Inbound telegram
+
+Last verified: 06-08-2026 @ c61b0b3
+
+V-637, under V-628. Reads with `22-correcting-a-turn.md`.
+
+## What was missing
+
+Telegram was a reach and nothing else. `telegramsink` pushed an away message and the chat
+had no way to answer, so the correction gesture reached the web and voice only.
+
+That skews the labels. V-546 fits routing heads on them, and a sample drawn from wherever
+the owner happens to be sitting is the wrong sample.
+
+## Long-poll, not a webhook
+
+The box takes no inbound connections and reaches api.telegram.org through a relay, so the
+connection has to open outward. `getUpdates` with a 25 second hold, one goroutine in the
+daemon's WaitGroup.
+
+A failed poll waits 15 seconds and retries without escalating. The relay going down is the
+normal cause and it comes back on its own.
+
+## The backlog is dropped on start
+
+Telegram keeps undelivered updates for 24 hours. A daemon that was down overnight would
+otherwise wake and answer every queued message in order.
+
+That is worse than missing them. A question asked eight hours ago has been answered
+already. A reminder set from it lands at the wrong time. So the first call moves the offset
+past whatever is queued and acts on none of it.
+
+## One chat
+
+`ChatID` is the only accepted sender, and it is the same chat the push half already sends
+to. A message from anywhere else is dropped with no reply, because a reply confirms the bot
+exists and whose it is.
+
+Chat ids are not guessable. They are also not secret, since they travel in every forwarded
+message. So this is the whole authorisation and it is an allowlist of one.
+
+## The gesture
+
+Two taps at most. The reply carries one button, `не то`. Tapping it writes nothing and opens
+the seven intents plus `просто неверно`. The untargeted negative stays reachable, because he
+may have opened the row without meaning to name anything.
+
+Callback data carries the trace id and the target, under telegram's 64 byte cap. It comes
+off the wire. So an id that will not parse is dropped, and so is a target that is not one of
+the seven. A label nothing can score is worse than no label.
+
+A failed write says so on the button and leaves the keyboard up. A successful one takes the
+keyboard off, because a live keyboard on an answered turn invites correcting it twice.
+
+## The seam
+
+`NewPoller` takes two functions and no daemon type. `cmd/mavend/telegramintake.go` fills
+them from `ipc.CoreAPI`: `Chat` returns the reply and the trace id it collected off the
+context, and `CorrectTurn` writes the label. So a chat turn takes the path
+`POST /api/chat` already takes, and nothing in `internal/delivery` knows what a handler is.
+
+## What is not done
+
+The turn source is still `tap:text`, which telegram shares with the web. Provenance cannot
+tell a chat turn from a typed one, so a label's `source` column cannot either.
+That matters the first time someone asks whether corrections given in the chat differ from
+corrections given at the desk.
+
+Voice messages are ignored. The poller reads `message.text` and nothing else, so a voice
+note in the chat does not reach `mavsttd`.

docs/plans/24-no-deadline-on-the-turn-path.md

@@ -0,0 +1,99 @@
+# No deadline on the turn path
+
+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`.
+
+## What is missing
+
+A chat turn starts in a mavweb HTTP handler and ends at llama-server. Nothing between those
+two points can be cancelled, and one hop has a timeout.
+
+Four places, all on the same path.
+
+`voice.Replier.Reply` takes no context (`internal/voice/replier.go:41`). So `llmReplier`
+calls `PhraseReply(context.Background(), d)` at `cmd/mavend/replier_llm.go:42`. The turn
+cannot deadline its own reply. The only bound is `phraser.timeout`, 60s in deploy.
+
+`ipc.Client.roundtrip` sets no connection deadline (`internal/ipc/client.go:202`). A daemon
+that stops answering parks the caller for as long as the socket stays open.
+
+`ipc.Client.call` checks the context once, before sending (`client.go:149`), then blocks in
+`roundtrip`. Cancelling mid-call does nothing.
+
+`ipc.Server.serveConn` dispatches under `context.Background()` (`internal/ipc/server.go:253`).
+A client that hangs up does not cancel the turn, and neither does `Server.Close`.
+
+## And every call queues behind the slowest one
+
+`ipc.Client` serialises on one connection and one mutex. mavweb routes `/api/chat` and
+`/api/ptt` through the shared client, so one turn blocks all 28 handlers while it runs.
+Worst case is a 60s page load.
+
+This is understood for exactly one route already. `cmd/mavweb/main.go:57` opens a second
+connection for `/models`, and the comment there says why. A model swap is a multi-minute
+call, and sharing the connection would freeze every other page.
+
+## The pattern is already in the repo
+
+`internal/voice/client.go:101` derives a connection deadline from the caller's context,
+falls back to 120s, and clears it with a defer. `internal/ipc/client.go` never learned it.
+Copy that rather than inventing a second convention.
+
+## The work
+
+One commit each.
+
+**Context on the reply seam.** `phraser.Replier.PhraseReply` already takes a context and the
+interface has two implementations, so this is small. Change `Reply` to take a context, have
+`StubReplier` ignore it, and pass it through `llmReplier` to `PhraseReply`. Both call sites
+already hold one: `cmd/mavend/voice.go:461` and `cmd/mavend/clarify.go:574`.
+
+**Deadlines and cancellation on the client.** Pass the context into `roundtrip` and set
+`SetDeadline` from it. For cancellation mid-call, a watchdog goroutine that calls `c.drop()`
+on `ctx.Done()` is enough. `drop` exists, and the retry split already separates a lost write
+from a lost read. So a cancelled call lands in `errReadLost` and is never retried for a
+mutation. Check that against `internal/ipc/maperr_test.go`.
+
+**A request context on the server.** `serveConn` should derive from a server-scoped context
+so `Close` cancels a dispatch in flight. `Server` already carries `done` and a conn registry
+for this class of problem. The registry comment records what the last version of it cost:
+eleven days of stale ciphertext.
+
+**Stop serialising mavweb.** Give `/api/chat` and `/api/ptt` their own connection, the way
+`/models` has one. Roughly ten lines, and it changes no shared code.
+
+A connection pool inside `ipc.Client` is the general form and is deliberately not the first
+step. Each connection is already its own request and response stream. So a pool preserves
+frame pairing by construction. It still has to keep re-dial on drop, the
+`errWriteLost` and `errReadLost` split, and `Close`. Do the narrow fix, measure, and reach
+for the pool only if a second module turns out to queue.
+
+## How it is judged
+
+`make test` stays green. It is green at `06c1cf2`.
+
+Nothing here changes routing or recall, so `make eval-router` and `make eval-recall` are
+unchanged rather than re-measured.
+
+By hand: load `/dash` while a chat turn is in flight. Before the change it waits for the
+length of the turn.
+
+There is no test today that a cancelled context aborts an in-flight `ipc.Client` call. That
+absence is why two of these four went unnoticed, so the test is part of the work.
+
+## What is not done here
+
+The store is still `SetMaxOpenConns(1)` (`internal/store/store.go:99`) under WAL. WAL is
+built for concurrent readers against one writer, and the cap makes every read queue.
+`Store.DB(ctx)` hands the digestion worker a read transaction on that same connection. This
+plan does not touch it. It is measurable first and should be measured before it is changed.

docs/plans/25-the-two-boot-paths.md

@@ -0,0 +1,99 @@
+# The two boot paths have drifted
+
+Last verified: 06-08-2026 @ 69d0f5e
+
+V-639. Reads with `docs/operations.md`.
+
+## What landed
+
+`cmd/mavend/boot.go`. `newDaemonAPI(deps)` builds the CoreAPI with every field
+set, and `startBackground(ctx, &wg, deps)` starts the voice server and every
+worker through `goWorker`. `backgroundWorkers(deps)` is the pure list behind it,
+so a test can compare the set without standing a daemon up. Both paths in
+`run()` now read `coreAPI = newDaemonAPI(depsNow())` and one
+`startBackground(...)`, where `depsNow` reads whatever the current path wired.
+
+The shadowed `wg` is gone. Four tests in `cmd/mavend/boot_test.go`. Every
+`daemonAPI` field is set on a fully wired deployment. The handler gets the API
+it was built with. The worker set is asserted by name, at the full set and at
+the floor.
+
+Still by hand: unlock a locked box by passkey, ask something that needs Nexus,
+and check `/tools` lists the MCP servers.
+
+## What is wrong
+
+`run()` in `cmd/mavend/main.go` brings the daemon up two ways. A box with a key in the
+environment starts unlocked and wires everything at lines 280 to 621. A box without one
+starts locked. It wires the same things again inside the unlock closure, at lines 500 to
+579, after a passkey assertion.
+
+The two lists have drifted apart. Three ways.
+
+**Seven workers start untracked.** The unlocked path puts every one through
+`goWorker(&wg, ...)`, so `waitWorkers` at line 637 can wait for them. The unlock path
+starts `tl.run`, `factWorker`, `evalWorker`, `feedWkr`, `crawlWkr`, `mcp.run` and
+`home.run` as bare `go func()`. Nothing waits for any of them.
+
+That is the shutdown bug the code already documents at lines 631 to 636, reintroduced on
+the other path. The comment there records what it cost the first time. `run()` never
+returned, so `defer st.Close()` never sealed the database. The deployed ciphertext was
+eleven days stale before anyone noticed.
+
+**A shadowed WaitGroup hides it.** Line 529 declares `var wg sync.WaitGroup` inside the
+`if voiceW != nil` block, shadowing the one from line 359. It is `Add`ed and `Done`d and
+never waited. Reading the block, the voice server looks tracked. It is not.
+
+**Two `daemonAPI` fields are never set.** The unlocked path fills `nexus` at line 295 and
+`getMCPServers` at line 305. The unlock path fills neither. So after a passkey unlock,
+`ResolveEntity` answers `ErrNotImplemented` with a `nexus` block configured, and
+`MCPServers` answers empty with an `mcp` block configured.
+
+The second is the worse one. Empty is not a degraded answer, it is a wrong answer, and
+`/tools` renders it as "not configured".
+
+## Why it drifted
+
+`wireTelegramIntake` was added to both paths on 06-08-2026 (V-637) and it does use the
+outer `wg`, at line 519. So the newest line on that path is correct and the older ones
+around it are not. The path gets touched one line at a time and is never read whole.
+
+The shape of `cmd/mavend` is what allows that. It is 155 files and 9,551 lines of code.
+Six things live in it with no seam between them:
+
+- the handler
+- the action dispatch
+- the 19 query sources
+- the wiring functions
+- the six background workers
+- these two boot paths
+
+Nothing in the package makes the divergence visible.
+
+## The fix
+
+Make the two paths call one function instead of listing the same wiring twice.
+
+One `startBackground(ctx, &wg, deps)` that takes what it needs and starts every worker
+through `goWorker`. One `newDaemonAPI(deps)` that fills every field, including `nexus` and
+`getMCPServers`, so a field added later cannot reach one path and miss the other. Both
+call sites then read as one call each, and a future addition has one place to go.
+
+Delete the shadowed `wg` at line 529 as part of it.
+
+## How it is judged
+
+`make test` stays green.
+
+The regression that matters is a test asserting the two paths wire the same set. Compare
+the constructed `daemonAPI` field by field, and assert the worker count started under the
+outer `wg` matches. Without that, this drifts again the next time a wiring line is added.
+
+Then confirm on a locked box: unlock by passkey, ask something that needs Nexus, and check
+`/tools` lists the MCP servers. Both answer wrongly today.
+
+## Priority
+
+Latent, not live. `deploy/mavend.json` sets `db_key_env`, so homesrv boots unlocked and
+takes the correct path. This bites the locked deployment that `docs/operations.md`
+describes, and it bites silently.

internal/config/config.go

@@ -456,9 +456,30 @@ func (c *Config) validate() error {
 	if err := c.validateCapture(); err != nil {
 		return err
 	}
+	if err := c.validateTelegram(); err != nil {
+		return err
+	}
 	return nil
 }
 
+// validateTelegram refuses an intake half that cannot read the chat it is
+// pointed at. The push half accepts an @channelusername and the intake half
+// does not, so a box configured with both boots clean, keeps pushing, and
+// answers nothing — the failure is invisible from the chat. Same shape as
+// validateNetScan: fail the config rather than the turn.
+func (c *Config) validateTelegram() error {
+	if c.Telegram == nil || !c.Telegram.Intake {
+		return nil
+	}
+	// An unset ${TELEGRAM_*} expands to empty, and the daemon already reads an
+	// empty token or chat id as telegram not being wired at all. Validating a
+	// block that wires nothing would fail a box that merely has no bot.
+	if c.Telegram.BotToken == "" || c.Telegram.ChatID == "" {
+		return nil
+	}
+	return telegramsink.ValidateIntakeChatID(c.Telegram.ChatID)
+}
+
 // DBEncryptionKey resolves the at-rest encryption key: DBKeyEnv (if set) wins
 // over DBKeyB64. Returns (nil, nil) when neither is set — the caller then opens
 // a plaintext store. A configured-but-invalid key is an error (fail closed,

internal/config/config_test.go

@@ -466,3 +466,29 @@ func TestNormaliseKeepsExplicitWorkstationHealth(t *testing.T) {
 		t.Errorf("Health = %q, want %q", got, want)
 	}
 }
+
+func TestTelegramIntakeRefusesNamedChat(t *testing.T) {
+	// The push half accepts an @channelusername and the intake half cannot use
+	// one, so a box with both boots clean and answers nothing. Refuse the
+	// config instead.
+	p := writeConfig(t, `{"telegram":{"bot_token":"t","chat_id":"@maven","intake":true}}`)
+	if _, err := Load(p); err == nil {
+		t.Fatal("Load succeeded for intake with an @-name chat id; want error")
+	}
+}
+
+func TestTelegramNamedChatOKWithoutIntake(t *testing.T) {
+	// Push-only is what the @-name is for, so nothing changes for a box that
+	// never turned intake on.
+	p := writeConfig(t, `{"telegram":{"bot_token":"t","chat_id":"@maven"}}`)
+	if _, err := Load(p); err != nil {
+		t.Fatalf("Load: %v", err)
+	}
+}
+
+func TestTelegramIntakeAcceptsNumericChat(t *testing.T) {
+	p := writeConfig(t, `{"telegram":{"bot_token":"t","chat_id":"-1001234567890","intake":true}}`)
+	if _, err := Load(p); err != nil {
+		t.Fatalf("Load: %v", err)
+	}
+}

internal/delivery/durability_test.go

@@ -94,20 +94,22 @@ func openTestStore(t *testing.T) *store.Store {
 
 // attemptStatus reads one attempt row back. Returns ok=false when the row is
 // gone, which would itself be a broken promise (a dropped attempt).
+//
+// It goes through ListDeliveryAttempts rather than raw SQL. This helper used to
+// reach past the store into store.DB, which was the tell that the outbox was
+// write-only; the reader landed in V-390 and this caller was not moved over.
 func attemptStatus(t *testing.T, st *store.Store, id int64) (status string, completed bool, ok bool) {
 	t.Helper()
-	tx, err := st.DB(context.Background())
+	attempts, err := st.ListDeliveryAttempts(context.Background(), "", 200)
 	if err != nil {
-		t.Fatalf("read tx: %v", err)
+		t.Fatalf("ListDeliveryAttempts: %v", err)
 	}
-	defer func() { _ = tx.Rollback() }()
-	var completedTS *int64
-	err = tx.QueryRowContext(context.Background(),
-		`SELECT status, completed_ts FROM delivery_attempts WHERE id = ?`, id).Scan(&status, &completedTS)
-	if err != nil {
-		return "", false, false
+	for _, a := range attempts {
+		if a.ID == id {
+			return a.Status, a.HasComplete, true
+		}
 	}
-	return status, completedTS != nil, true
+	return "", false, false
 }
 
 // TestCrashBetweenBeginAndCompleteBecomesUnknown — simulate the crash window:

internal/delivery/telegramsink/botapi.go

@@ -0,0 +1,175 @@
+// botapi.go — the telegram bot API calls the intake half makes, and the inbound
+// shapes it reads (V-637). Split out of intake.go so the poller reads as the
+// policy it is, with the wire in one place under it.
+package telegramsink
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"strings"
+)
+
+// getUpdates long-polls. The offset is telegram's own acknowledgement: asking
+// for lastSeen+1 is what drops everything before it from the queue, so an
+// update is handled once even across a restart.
+func (p *Poller) getUpdates(ctx context.Context, timeoutSec int) ([]update, error) {
+	body, err := json.Marshal(map[string]any{
+		"offset":          p.offset,
+		"timeout":         timeoutSec,
+		"allowed_updates": []string{"message", "callback_query"},
+	})
+	if err != nil {
+		return nil, err
+	}
+	var env struct {
+		telegramResp
+		Result []update `json:"result"`
+	}
+	if err := p.call(ctx, "getUpdates", body, &env); err != nil {
+		return nil, err
+	}
+	for _, u := range env.Result {
+		if u.UpdateID >= p.offset {
+			p.offset = u.UpdateID + 1
+		}
+	}
+	return env.Result, nil
+}
+
+func (p *Poller) send(ctx context.Context, text string, kb *inlineKeyboard) error {
+	body, err := json.Marshal(sendMessageReq{
+		ChatID: p.cfgChatID(),
+		Text:   text,
+		// A reply to something he just typed is not an alarm, but it is still his
+		// own data in a third party's chat, so it stays unforwardable like the
+		// away messages the sink pushes.
+		ProtectContent: true,
+		ReplyMarkup:    kb,
+	})
+	if err != nil {
+		return err
+	}
+	return p.call(ctx, "sendMessage", body, nil)
+}
+
+// answerCallback stops the clock on the tapped button. text empty is a silent
+// acknowledgement; anything else shows as a toast.
+func (p *Poller) answerCallback(ctx context.Context, id, text string) {
+	body, err := json.Marshal(map[string]any{"callback_query_id": id, "text": text})
+	if err != nil {
+		return
+	}
+	if err := p.call(ctx, "answerCallbackQuery", body, nil); err != nil {
+		log.Printf("telegram intake: answer callback: %v", err)
+	}
+}
+
+// editKeyboard replaces the buttons under a message the bot sent. kb nil takes
+// them off.
+func (p *Poller) editKeyboard(ctx context.Context, chatID string, messageID int64, kb *inlineKeyboard) error {
+	payload := map[string]any{"chat_id": chatID, "message_id": messageID}
+	if kb != nil {
+		payload["reply_markup"] = kb
+	} else {
+		payload["reply_markup"] = inlineKeyboard{Rows: [][]inlineButton{}}
+	}
+	body, err := json.Marshal(payload)
+	if err != nil {
+		return err
+	}
+	return p.call(ctx, "editMessageReplyMarkup", body, nil)
+}
+
+// call posts one bot API method and checks the envelope. out may be nil when
+// only the ok flag matters. Every error goes through the sink's redaction: the
+// token is in the URL path because telegram accepts it nowhere else, and
+// net/http prints that URL in transport errors.
+func (p *Poller) call(ctx context.Context, method string, body []byte, out any) error {
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost,
+		p.sink.base+"/bot"+p.sink.cfg.BotToken+"/"+method, bytes.NewReader(body))
+	if err != nil {
+		return p.sink.redact(err)
+	}
+	req.Header.Set("Content-Type", "application/json")
+	resp, err := p.hc.Do(req)
+	if err != nil {
+		return fmt.Errorf("telegramsink: %s: %w", method, p.sink.redact(err))
+	}
+	defer resp.Body.Close()
+	rb, _ := io.ReadAll(io.LimitReader(resp.Body, maxIntakeRespBytes))
+
+	var tr telegramResp
+	if err := json.Unmarshal(rb, &tr); err != nil {
+		return fmt.Errorf("telegramsink: %s: %d with a body that is not the bot API envelope: %s",
+			method, resp.StatusCode, snippet(rb))
+	}
+	if !tr.Ok {
+		return fmt.Errorf("telegramsink: %s: telegram returned error %d: %s",
+			method, tr.ErrorCode, strings.TrimSpace(tr.Description))
+	}
+	if out == nil {
+		return nil
+	}
+	if err := json.Unmarshal(rb, out); err != nil {
+		return fmt.Errorf("telegramsink: %s: decode result: %w", method, err)
+	}
+	return nil
+}
+
+// maxIntakeRespBytes — a getUpdates batch carries up to 100 messages, so the
+// send path's cap is too small here. Still bounded: the body is wire-controlled
+// and a relay sits in front of it.
+const maxIntakeRespBytes = 4 << 20
+
+// The inbound shapes, cut to what the poller reads.
+type update struct {
+	UpdateID      int64          `json:"update_id"`
+	Message       *message       `json:"message,omitempty"`
+	CallbackQuery *callbackQuery `json:"callback_query,omitempty"`
+}
+
+type message struct {
+	MessageID int64  `json:"message_id"`
+	Chat      chat   `json:"chat"`
+	Text      string `json:"text"`
+}
+
+type callbackQuery struct {
+	ID      string  `json:"id"`
+	Data    string  `json:"data"`
+	Message message `json:"message"`
+}
+
+// chat — the id arrives as a JSON number for a user and a string for a channel,
+// and the config holds whichever was written. json.Number keeps both without
+// choosing.
+type chat struct {
+	ID       json.Number `json:"id"`
+	Username string      `json:"username,omitempty"`
+}
+
+func (c chat) idString() string {
+	if s := c.ID.String(); s != "" {
+		return s
+	}
+	if c.Username != "" {
+		return "@" + c.Username
+	}
+	return ""
+}
+
+// inlineKeyboard — the reply_markup shape. Rows of buttons, each carrying
+// callback data.
+type inlineKeyboard struct {
+	Rows [][]inlineButton `json:"inline_keyboard"`
+}
+
+type inlineButton struct {
+	Text string `json:"text"`
+	Data string `json:"callback_data"`
+}

internal/delivery/telegramsink/correction.go

@@ -0,0 +1,101 @@
+// correction.go — the correction gesture as it appears in the chat (V-637).
+// Two taps at most: "не то" opens the seven intents, and one of them writes the
+// label. The web's version of the same gesture is cmd/mavweb/chat.go.
+package telegramsink
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// CorrectionTargets — the intents a correction may name, in the order the
+// buttons are drawn. It mirrors the seven the web offers, and it is a closed
+// list for the same reason: V-632 fits prototypes from the label table, and a
+// label nothing can score is worse than no label.
+var CorrectionTargets = []string{"fact", "note", "reminder", "query", "act", "chat", "system"}
+
+// correctionKeyboard — the one gesture beside the reply. Nothing when the turn
+// did not persist: a button that cannot name a row would report a failure the
+// owner cannot act on.
+func (p *Poller) correctionKeyboard(traceID int64) *inlineKeyboard {
+	if traceID <= 0 || p.correct == nil {
+		return nil
+	}
+	return &inlineKeyboard{Rows: [][]inlineButton{{
+		{Text: "не то", Data: fmt.Sprintf("%s%d", prefixAsk, traceID)},
+	}}}
+}
+
+// targetKeyboard — the seven intents, plus the cheap half kept reachable. He
+// opened the row without knowing he had to name something, and closing it with
+// no way out would price the negative he was willing to give.
+func targetKeyboard(traceID int64) *inlineKeyboard {
+	var rows [][]inlineButton
+	row := []inlineButton{}
+	for _, t := range CorrectionTargets {
+		row = append(row, inlineButton{Text: t, Data: fmt.Sprintf("%s%d:%s", prefixTarget, traceID, t)})
+		if len(row) == 4 {
+			rows, row = append(rows, row), nil
+		}
+	}
+	if len(row) > 0 {
+		rows = append(rows, row)
+	}
+	return &inlineKeyboard{Rows: append(rows, []inlineButton{
+		{Text: "просто неверно", Data: fmt.Sprintf("%s%d:", prefixTarget, traceID)},
+	})}
+}
+
+// Callback data is capped at 64 bytes by telegram, so it carries the trace id
+// and the target and nothing else.
+const (
+	prefixAsk    = "w:"
+	prefixTarget = "t:"
+)
+
+type callbackKind int
+
+const (
+	callbackUnknown callbackKind = iota
+	callbackAskTarget
+	callbackTarget
+)
+
+// parseCallback reads button data. An unparseable id, or a target that is not
+// one of the seven, is callbackUnknown — the data came off the wire, and a
+// label the fitting code cannot score is worse than no label.
+func parseCallback(data string) (traceID int64, target string, kind callbackKind) {
+	switch {
+	case strings.HasPrefix(data, prefixAsk):
+		id, err := strconv.ParseInt(strings.TrimPrefix(data, prefixAsk), 10, 64)
+		if err != nil || id <= 0 {
+			return 0, "", callbackUnknown
+		}
+		return id, "", callbackAskTarget
+	case strings.HasPrefix(data, prefixTarget):
+		rest := strings.TrimPrefix(data, prefixTarget)
+		idPart, target, ok := strings.Cut(rest, ":")
+		if !ok {
+			return 0, "", callbackUnknown
+		}
+		id, err := strconv.ParseInt(idPart, 10, 64)
+		if err != nil || id <= 0 {
+			return 0, "", callbackUnknown
+		}
+		if target != "" && !isCorrectionTarget(target) {
+			return 0, "", callbackUnknown
+		}
+		return id, target, callbackTarget
+	}
+	return 0, "", callbackUnknown
+}
+
+func isCorrectionTarget(s string) bool {
+	for _, t := range CorrectionTargets {
+		if t == s {
+			return true
+		}
+	}
+	return false
+}

internal/delivery/telegramsink/correction_test.go

@@ -0,0 +1,30 @@
+package telegramsink
+
+import "testing"
+
+// Button data comes off the wire. An unparseable id or an intent that is not one
+// of the seven must not reach the label table V-632 fits prototypes from.
+func TestParseCallbackRejectsWhatCannotBeALabel(t *testing.T) {
+	for _, data := range []string{
+		"", "nonsense", "w:", "w:0", "w:-3", "w:abc",
+		"t:77", "t:0:note", "t:abc:note", "t:77:погода", "t:77:fact:extra",
+	} {
+		if _, _, kind := parseCallback(data); kind != callbackUnknown {
+			t.Errorf("%q was accepted, want callbackUnknown", data)
+		}
+	}
+	if id, target, kind := parseCallback("t:77:reminder"); id != 77 || target != "reminder" || kind != callbackTarget {
+		t.Errorf("got %d %q %v, want the reminder correction", id, target, kind)
+	}
+}
+
+// Every intent the web offers has a button here, so a new intent cannot exist
+// with no way to correct a chat turn into it.
+func TestIntakeTargetsAreTheSeven(t *testing.T) {
+	if len(CorrectionTargets) != 7 {
+		t.Fatalf("%d targets, want the seven public intents", len(CorrectionTargets))
+	}
+	if isCorrectionTarget("") {
+		t.Error("empty is the absence of a target, not one of them")
+	}
+}

internal/delivery/telegramsink/intake.go

@@ -0,0 +1,225 @@
+// intake.go — the inbound half of the telegram channel (V-637).
+//
+// Until this file, telegram was a reach and nothing else: the sink pushes an
+// away message and the chat has no way to answer. That made the correction
+// gesture (V-630) reachable from the web and from voice only, and the sample of
+// labels skews to wherever the owner happens to be standing.
+//
+// Long-poll getUpdates, not a webhook. The box takes no inbound connections and
+// it reaches api.telegram.org through a relay, so the direction of the
+// connection has to stay outbound. The poller is off unless the telegram block
+// says intake, and it accepts messages from exactly one chat.
+package telegramsink
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log"
+	"net/http"
+	"strings"
+	"time"
+)
+
+// longPollSeconds — how long telegram holds an empty getUpdates open. The HTTP
+// client's own timeout has to sit above it or every poll ends as a transport
+// error, which is why the poller does not reuse the sink's client.
+const longPollSeconds = 25
+
+// pollBackoff — the wait after a failed poll. The relay going down is the
+// normal cause and it comes back on its own, so this is a quiet retry rather
+// than an escalation.
+const pollBackoff = 15 * time.Second
+
+// Turn runs one utterance as a turn and reports the reply and the persisted
+// trace id. traceID 0 means nothing persisted, and then the reply carries no
+// correction buttons — there is no row for them to point at.
+type Turn func(ctx context.Context, conversation, text string) (reply string, traceID int64, err error)
+
+// Correct records the owner's correction of one turn. shouldBe empty is the
+// cheap half of the gesture: wrong, target unstated.
+type Correct func(ctx context.Context, traceID int64, shouldBe string) error
+
+// Poller reads the configured chat and answers in it. One per daemon.
+type Poller struct {
+	sink    *Sink
+	turn    Turn
+	correct Correct
+	hc      *http.Client
+	offset  int64
+}
+
+// ValidateIntakeChatID refuses a chat id the intake half cannot use. The push
+// half accepts @channelusername as a destination. The intake half cannot: an
+// inbound update names its chat by numeric id, so an @-name would match nothing
+// and the poller would read the chat and answer none of it. Config validation
+// calls this, so the box refuses to boot rather than running a dead reach —
+// NewPoller returning an error is too late, because the daemon is already up.
+func ValidateIntakeChatID(chatID string) error {
+	id := strings.TrimSpace(chatID)
+	if id == "" {
+		return errors.New("telegramsink: intake needs a chat id")
+	}
+	digits := strings.TrimPrefix(id, "-")
+	if digits == "" || strings.TrimLeft(digits, "0123456789") != "" {
+		return fmt.Errorf("telegramsink: intake needs the numeric chat id, not %s", chatID)
+	}
+	return nil
+}
+
+// NewPoller builds the intake half around an already-validated sink, so the
+// token, the base URL and the relay are resolved in one place. turn is
+// required; correct may be nil, and then the reply carries no buttons.
+func NewPoller(s *Sink, turn Turn, correct Correct) (*Poller, error) {
+	if s == nil {
+		return nil, errors.New("telegramsink: intake needs a sink")
+	}
+	if turn == nil {
+		return nil, errors.New("telegramsink: intake needs a turn handler")
+	}
+	if err := ValidateIntakeChatID(s.cfg.ChatID); err != nil {
+		return nil, err
+	}
+	// The sink's transport already carries the relay. Only the timeout differs,
+	// and it has to clear the long poll.
+	hc := &http.Client{
+		Timeout:   (longPollSeconds + 10) * time.Second,
+		Transport: s.hc.Transport,
+	}
+	return &Poller{sink: s, turn: turn, correct: correct, hc: hc}, nil
+}
+
+// Run polls until the context ends. It never returns an error: a chat that
+// cannot be read is a degraded reach, not a reason to stop the daemon.
+func (p *Poller) Run(ctx context.Context) {
+	p.discardBacklog(ctx)
+	log.Printf("telegram intake: reading chat %s", p.sink.cfg.ChatID)
+	for ctx.Err() == nil {
+		updates, err := p.getUpdates(ctx, longPollSeconds)
+		if err != nil {
+			if ctx.Err() != nil {
+				return
+			}
+			log.Printf("telegram intake: poll: %v", err)
+			select {
+			case <-ctx.Done():
+				return
+			case <-time.After(pollBackoff):
+			}
+			continue
+		}
+		for _, u := range updates {
+			p.handle(ctx, u)
+		}
+	}
+}
+
+// discardBacklog moves the offset past whatever is already queued, without
+// acting on any of it.
+//
+// Telegram holds undelivered updates for 24 hours, so a daemon that was down
+// overnight would otherwise wake up and answer every question in order. A
+// question asked eight hours ago has been answered by the owner himself or has
+// stopped mattering, and a reminder set from it would land at the wrong time.
+// Missing it is the safe direction.
+func (p *Poller) discardBacklog(ctx context.Context) {
+	// getUpdates returns at most 100 per call, so one call is not the queue. The
+	// loop is bounded rather than "until empty": the timeout is 0, so an instance
+	// that keeps handing back a full batch would spin, and a thousand skipped
+	// messages is already a box that was down for a long time.
+	skipped := 0
+	for range 10 {
+		updates, err := p.getUpdates(ctx, 0)
+		if err != nil {
+			// Not fatal. The offset stays where it was, so the first real poll sees
+			// what is left and answers it late. Say so rather than hide it.
+			log.Printf("telegram intake: could not skip the backlog, old messages may be answered: %v", err)
+			return
+		}
+		skipped += len(updates)
+		if len(updates) == 0 {
+			break
+		}
+	}
+	if skipped > 0 {
+		log.Printf("telegram intake: skipped %d message(s) queued while the daemon was down", skipped)
+	}
+}
+
+// handle dispatches one update. Anything that is neither a message from the
+// owner's chat nor a callback on one of Maven's own keyboards is dropped in
+// silence: a reply to a stranger confirms the bot exists and who it belongs to.
+func (p *Poller) handle(ctx context.Context, u update) {
+	switch {
+	case u.CallbackQuery != nil:
+		p.onCallback(ctx, u.CallbackQuery)
+	case u.Message != nil:
+		p.onMessage(ctx, u.Message)
+	}
+}
+
+func (p *Poller) onMessage(ctx context.Context, m *message) {
+	text := strings.TrimSpace(m.Text)
+	if text == "" || !p.fromOwner(m.Chat.idString()) {
+		return
+	}
+	// The conversation id keys the dialogue, so a clarify question asked in the
+	// chat is not answered by an utterance typed on the web.
+	reply, traceID, err := p.turn(ctx, "telegram:"+m.Chat.idString(), text)
+	if err != nil {
+		log.Printf("telegram intake: turn: %v", err)
+		return
+	}
+	if strings.TrimSpace(reply) == "" {
+		return
+	}
+	if err := p.send(ctx, reply, p.correctionKeyboard(traceID)); err != nil {
+		log.Printf("telegram intake: reply: %v", err)
+	}
+}
+
+// onCallback handles a tap on a correction button. Every path from the owner
+// answers the callback: telegram spins a clock on the button until it is
+// answered, and an unanswered tap reads as a gesture that was dropped. A tap
+// from anyone else gets silence, the same as a message from a stranger.
+func (p *Poller) onCallback(ctx context.Context, cb *callbackQuery) {
+	if !p.fromOwner(cb.Message.Chat.idString()) {
+		return
+	}
+	traceID, target, kind := parseCallback(cb.Data)
+	if kind == callbackUnknown || p.correct == nil {
+		p.answerCallback(ctx, cb.ID, "")
+		return
+	}
+	// A tap on "не то" only opens the second row. Nothing is written yet: the
+	// target is worth much more than the negative, so he gets the chance to name
+	// it before the gesture is spent.
+	if kind == callbackAskTarget {
+		p.answerCallback(ctx, cb.ID, "")
+		if err := p.editKeyboard(ctx, cb.Message.Chat.idString(), cb.Message.MessageID, targetKeyboard(traceID)); err != nil {
+			log.Printf("telegram intake: open the target row: %v", err)
+		}
+		return
+	}
+	if err := p.correct(ctx, traceID, target); err != nil {
+		log.Printf("telegram intake: correct turn %d: %v", traceID, err)
+		p.answerCallback(ctx, cb.ID, "не записалось")
+		return
+	}
+	p.answerCallback(ctx, cb.ID, "записала")
+	// The buttons come off, because the correction is given and a live keyboard
+	// on an answered turn invites correcting it twice.
+	if err := p.editKeyboard(ctx, cb.Message.Chat.idString(), cb.Message.MessageID, nil); err != nil {
+		log.Printf("telegram intake: clear the keyboard: %v", err)
+	}
+}
+
+// fromOwner — one chat, and it is the one the sink already sends to. Telegram
+// chat ids are not guessable, but they are also not secret: they travel in
+// every forwarded message. So this is the whole authorisation and it is an
+// allowlist of one.
+func (p *Poller) fromOwner(chatID string) bool {
+	return chatID != "" && chatID == p.cfgChatID()
+}
+
+func (p *Poller) cfgChatID() string { return strings.TrimSpace(p.sink.cfg.ChatID) }

internal/delivery/telegramsink/intake_test.go

@@ -0,0 +1,216 @@
+package telegramsink
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"strings"
+	"testing"
+)
+
+// The turn he types in the chat is the turn the web would run, and the reply
+// carries the one gesture beside it.
+func TestIntakeRunsTheTurnAndOffersTheCorrection(t *testing.T) {
+	b := newFakeBot(t)
+	rec := &recorder{reply: "поняла", traceID: 91}
+	p := newTestPoller(t, b, rec)
+
+	p.handle(context.Background(), msg(ownerChat, "  поужинал  "))
+
+	if got := rec.took(); len(got) != 1 || got[0] != "поужинал" {
+		t.Fatalf("turns %q, want the trimmed utterance once", got)
+	}
+	// The dialogue is keyed per chat, so a clarify asked here is not answered on
+	// the web.
+	if rec.conversation != "telegram:"+ownerChat {
+		t.Errorf("conversation %q does not name the chat", rec.conversation)
+	}
+	sends := b.called("sendMessage")
+	if len(sends) != 1 {
+		t.Fatalf("%d sends, want 1", len(sends))
+	}
+	if sends[0].body["text"] != "поняла" {
+		t.Errorf("sent %v, want the reply", sends[0].body["text"])
+	}
+	if sends[0].body["protect_content"] != true {
+		t.Error("his own data went out forwardable")
+	}
+	kb, _ := json.Marshal(sends[0].body["reply_markup"])
+	if !strings.Contains(string(kb), "w:91") {
+		t.Errorf("keyboard %s does not point at the turn's trace", kb)
+	}
+}
+
+// A turn nothing persisted has no row to correct, and a button that would name
+// one reports a failure he cannot act on.
+func TestIntakeSkipsTheGestureWithNoTrace(t *testing.T) {
+	b := newFakeBot(t)
+	p := newTestPoller(t, b, &recorder{reply: "поняла", traceID: 0})
+
+	p.handle(context.Background(), msg(ownerChat, "привет"))
+
+	sends := b.called("sendMessage")
+	if len(sends) != 1 {
+		t.Fatalf("%d sends, want 1", len(sends))
+	}
+	if _, ok := sends[0].body["reply_markup"]; ok {
+		t.Error("offered a correction on a turn with no trace")
+	}
+}
+
+// One chat, and a stranger is not answered at all: a reply confirms the bot
+// exists and whose it is.
+func TestIntakeIgnoresAnyOtherChat(t *testing.T) {
+	b := newFakeBot(t)
+	rec := &recorder{reply: "поняла", traceID: 5}
+	p := newTestPoller(t, b, rec)
+
+	p.handle(context.Background(), msg("9999", "включи свет"))
+	p.handle(context.Background(), update{UpdateID: 8, CallbackQuery: &callbackQuery{
+		ID: "cb", Data: "t:5:note", Message: message{Chat: chat{ID: json.Number("9999")}},
+	}})
+
+	if got := rec.took(); len(got) != 0 {
+		t.Errorf("ran %q for a chat that is not the owner's", got)
+	}
+	if len(rec.corrections) != 0 {
+		t.Errorf("wrote %v from a chat that is not the owner's", rec.corrections)
+	}
+	if len(b.calls) != 0 {
+		t.Errorf("answered a stranger: %v", b.calls)
+	}
+}
+
+// Tapping "не то" opens the seven and writes nothing yet. The target is worth
+// much more than the negative, so it must not be spent before he can name it.
+func TestIntakeFirstTapOnlyOpensTheTargets(t *testing.T) {
+	b := newFakeBot(t)
+	rec := &recorder{}
+	p := newTestPoller(t, b, rec)
+
+	p.handle(context.Background(), update{UpdateID: 9, CallbackQuery: &callbackQuery{
+		ID: "cb", Data: "w:77", Message: message{MessageID: 11, Chat: chat{ID: json.Number(ownerChat)}},
+	}})
+
+	if len(rec.corrections) != 0 {
+		t.Fatalf("wrote %v before he named a target", rec.corrections)
+	}
+	if len(b.called("answerCallbackQuery")) != 1 {
+		t.Error("left the clock spinning on the button")
+	}
+	edits := b.called("editMessageReplyMarkup")
+	if len(edits) != 1 {
+		t.Fatalf("%d edits, want the target row", len(edits))
+	}
+	kb, _ := json.Marshal(edits[0].body["reply_markup"])
+	for _, want := range CorrectionTargets {
+		if !strings.Contains(string(kb), `"`+want+`"`) {
+			t.Errorf("target row %s is missing %s", kb, want)
+		}
+	}
+	// And the way out, because he opened the row without knowing he had to name
+	// anything.
+	if !strings.Contains(string(kb), `"t:77:"`) {
+		t.Errorf("target row %s prices out the untargeted negative", kb)
+	}
+}
+
+func TestIntakeWritesTheCorrection(t *testing.T) {
+	for _, tc := range []struct {
+		name, data, want string
+	}{
+		{"with a target", "t:77:note", "note"},
+		{"untargeted", "t:77:", ""},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			b := newFakeBot(t)
+			rec := &recorder{}
+			p := newTestPoller(t, b, rec)
+
+			p.handle(context.Background(), update{UpdateID: 9, CallbackQuery: &callbackQuery{
+				ID: "cb", Data: tc.data, Message: message{MessageID: 11, Chat: chat{ID: json.Number(ownerChat)}},
+			}})
+
+			if len(rec.corrections) != 1 || rec.corrections[0] != (correction{77, tc.want}) {
+				t.Fatalf("corrections %v, want trace 77 → %q", rec.corrections, tc.want)
+			}
+			// The buttons come off once the gesture is given.
+			edits := b.called("editMessageReplyMarkup")
+			if len(edits) != 1 {
+				t.Fatalf("%d edits, want the keyboard cleared", len(edits))
+			}
+			kb, _ := json.Marshal(edits[0].body["reply_markup"])
+			if strings.Contains(string(kb), "t:77") {
+				t.Errorf("keyboard %s still invites a second correction", kb)
+			}
+		})
+	}
+}
+
+// A write that failed says so on the button. Silence would read as recorded.
+func TestIntakeSaysWhenTheLabelDidNotLand(t *testing.T) {
+	b := newFakeBot(t)
+	rec := &recorder{correctErr: errors.New("no such routing trace")}
+	p := newTestPoller(t, b, rec)
+
+	p.handle(context.Background(), update{UpdateID: 9, CallbackQuery: &callbackQuery{
+		ID: "cb", Data: "t:77:fact", Message: message{MessageID: 11, Chat: chat{ID: json.Number(ownerChat)}},
+	}})
+
+	answers := b.called("answerCallbackQuery")
+	if len(answers) != 1 || answers[0].body["text"] == "" {
+		t.Fatalf("answers %v, want a toast saying it did not land", answers)
+	}
+	if len(b.called("editMessageReplyMarkup")) != 0 {
+		t.Error("cleared the buttons after a failed write, so he cannot try again")
+	}
+}
+
+// A question asked while the daemon was down has been answered by him or has
+// stopped mattering, and a reminder set from it would land at the wrong time.
+func TestIntakeDiscardsTheBacklog(t *testing.T) {
+	b := newFakeBot(t, []update{msg(ownerChat, "напомни в 7 позвонить маме")})
+	rec := &recorder{reply: "поняла", traceID: 3}
+	p := newTestPoller(t, b, rec)
+
+	p.discardBacklog(context.Background())
+
+	if got := rec.took(); len(got) != 0 {
+		t.Errorf("answered %q from the overnight queue", got)
+	}
+	// And the offset moved past it, so the next poll does not see it again.
+	if p.offset != 8 {
+		t.Errorf("offset %d, want the skipped update acknowledged", p.offset)
+	}
+}
+
+// The poller does not start without somewhere to send the turn.
+func TestNewPollerNeedsATurn(t *testing.T) {
+	sink, err := New(Config{BotToken: "t", ChatID: ownerChat})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := NewPoller(sink, nil, nil); err == nil {
+		t.Error("built a poller that reads the chat and answers nothing")
+	}
+	if _, err := NewPoller(nil, func(context.Context, string, string) (string, int64, error) {
+		return "", 0, nil
+	}, nil); err == nil {
+		t.Error("built a poller with no sink to answer through")
+	}
+}
+
+// A chat id the intake half cannot match is refused before anything reads the
+// chat. Config validation calls the same check, so this is the boot error.
+func TestValidateIntakeChatID(t *testing.T) {
+	for _, ok := range []string{"123", "-1001234567890", " 42 "} {
+		if err := ValidateIntakeChatID(ok); err != nil {
+			t.Errorf("ValidateIntakeChatID(%q): %v", ok, err)
+		}
+	}
+	for _, bad := range []string{"", "@maven", "-", "12a", "1 2"} {
+		if err := ValidateIntakeChatID(bad); err == nil {
+			t.Errorf("ValidateIntakeChatID(%q) accepted; want error", bad)
+		}
+	}
+}

internal/delivery/telegramsink/intakeharness_test.go

@@ -0,0 +1,123 @@
+// intakeharness_test.go — a fake bot API and a recorder for what the poller
+// asked the daemon to do. Shared by the intake tests beside it.
+package telegramsink
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"sync"
+	"testing"
+)
+
+// fakeBot stands in for the bot API. It hands out queued updates once, records
+// every other call, and answers the ok=true envelope the poller checks.
+type fakeBot struct {
+	mu      sync.Mutex
+	updates [][]update // one batch per getUpdates call, then empty
+	calls   []botCall
+	srv     *httptest.Server
+}
+
+type botCall struct {
+	method string
+	body   map[string]any
+}
+
+func newFakeBot(t *testing.T, batches ...[]update) *fakeBot {
+	t.Helper()
+	b := &fakeBot{updates: batches}
+	b.srv = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		method := r.URL.Path[strings.LastIndex(r.URL.Path, "/")+1:]
+		raw, _ := io.ReadAll(r.Body)
+		var body map[string]any
+		_ = json.Unmarshal(raw, &body)
+
+		b.mu.Lock()
+		b.calls = append(b.calls, botCall{method: method, body: body})
+		var batch []update
+		if method == "getUpdates" && len(b.updates) > 0 {
+			batch, b.updates = b.updates[0], b.updates[1:]
+		}
+		b.mu.Unlock()
+
+		w.Header().Set("Content-Type", "application/json")
+		_ = json.NewEncoder(w).Encode(map[string]any{"ok": true, "result": batch})
+	}))
+	t.Cleanup(b.srv.Close)
+	return b
+}
+
+func (b *fakeBot) called(method string) []botCall {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+	var out []botCall
+	for _, c := range b.calls {
+		if c.method == method {
+			out = append(out, c)
+		}
+	}
+	return out
+}
+
+// recorder collects what the poller asked the daemon to do.
+type recorder struct {
+	mu           sync.Mutex
+	turns        []string
+	conversation string
+	traceID      int64
+	corrections  []correction
+	reply        string
+	err          error
+	correctErr   error
+}
+
+type correction struct {
+	traceID  int64
+	shouldBe string
+}
+
+func (r *recorder) turn(_ context.Context, conversation, text string) (string, int64, error) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.turns = append(r.turns, text)
+	r.conversation = conversation
+	return r.reply, r.traceID, r.err
+}
+
+func (r *recorder) correct(_ context.Context, traceID int64, shouldBe string) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	r.corrections = append(r.corrections, correction{traceID, shouldBe})
+	return r.correctErr
+}
+
+func (r *recorder) took() []string {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	return append([]string(nil), r.turns...)
+}
+
+const ownerChat = "4242"
+
+func newTestPoller(t *testing.T, b *fakeBot, rec *recorder) *Poller {
+	t.Helper()
+	sink, err := New(Config{BotToken: "secret-token", ChatID: ownerChat, BaseURL: b.srv.URL})
+	if err != nil {
+		t.Fatal(err)
+	}
+	p, err := NewPoller(sink, rec.turn, rec.correct)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return p
+}
+
+func msg(chatID, text string) update {
+	return update{UpdateID: 7, Message: &message{
+		MessageID: 11, Text: text, Chat: chat{ID: json.Number(chatID)},
+	}}
+}

internal/delivery/telegramsink/telegramsink.go

@@ -72,6 +72,13 @@ type Config struct {
 	// Timeout — per-request; 0 = DefaultTimeout. a dead relay can't hang the
 	// tick loop.
 	Timeout time.Duration
+
+	// Intake — read the chat as well as write to it (V-637). Off by default,
+	// like the search and weather blocks: a bot that only pushes cannot be
+	// talked into anything, and turning that off has to stay a deletion. When
+	// set, a message from ChatID becomes a turn and its reply carries the
+	// correction gesture. ChatID is the only accepted sender.
+	Intake bool `json:"intake,omitempty"`
 }
 
 // Sink — implements delivery.Sink via the telegram bot sendMessage API. one
@@ -130,6 +137,11 @@ type sendMessageReq struct {
 	Text                string `json:"text"`
 	DisableNotification bool   `json:"disable_notification"` // false = ring (always — these are alarms)
 	ProtectContent      bool   `json:"protect_content"`      // true = no forwarding out of chat
+
+	// ReplyMarkup — the inline keyboard, used only by the intake half (V-637):
+	// a reply to a turn he typed carries the correction gesture. nil on every
+	// push the sink sends, and omitted from the wire when nil.
+	ReplyMarkup *inlineKeyboard `json:"reply_markup,omitempty"`
 }
 
 // telegramResp — the shape telegram returns. ok=false on logical error with

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)
+		}
+	}
+}

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.

internal/ipc/server.go

@@ -17,9 +17,11 @@ import (
 // Server — the core side of the boundary. Listens on a unix domain socket,
 // accepts module connections, frames requests to a CoreAPI and responses back.
 // One Server per daemon process; concurrent connections are handled in their
-// own goroutine but share the single CoreAPI (and therefore the single store
-// writer — store is single-connection, SetMaxOpenConns(1), so serialization is
-// already guaranteed at the db; the Server adds no locking of its own).
+// own goroutine but share the single CoreAPI, and so the single store writer.
+// The store opens at SetMaxOpenConns(1), so serialisation is already guaranteed
+// at the database and the Server adds no locking of its own. That cap is an
+// invariant this comment depends on, measured and kept on 07-08-2026 (V-642,
+// docs/evals/2026-08-07-store-connection-cap.md).
 type Server struct {
 	api  atomic.Value // stores CoreAPI
 	path string
@@ -30,6 +32,14 @@ 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 +218,14 @@ 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 +263,10 @@ 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 +290,15 @@ 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 +745,9 @@ 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

internal/lexicon/lexicon.go

@@ -97,6 +97,11 @@ func NarrativeRequests() []string { return words("narrative_requests") }
 // the set's own note for why this one is a list and not a seed set.
 func RepairMarkers() []string { return words("repair_markers") }
 
+// RepairNegatives lists the ways he says the previous turn was wrong without
+// saying what it should have been. Matched against the whole utterance, never as
+// substrings — see the set's own note.
+func RepairNegatives() []string { return words("repair_negatives") }
+
 // FirstPerson lists every form of the first-person pronoun. Callers use it to
 // decide that a sentence is about him: internal/router/complaint.go keeps a
 // complaint out of the fact store unless one of these appears, because losing a

internal/lexicon/lexicon_ru_v1.json

@@ -147,6 +147,10 @@
         "got it wrong", "not a ", "that was wrong"
       ]
     },
+    "repair_negatives": {
+      "note": "The ways he says she got it wrong WITHOUT saying what it should have been. Matched against the WHOLE utterance, not as substrings, which is what keeps them apart from repair_markers: \u0022\u044d\u0442\u043e \u043d\u0435\u0022 is a fragment that needs an intent word after it, while these are complete sentences. A member that could appear inside an ordinary sentence does not belong here.",
+      "words": ["не так поняла", "неправильно поняла", "ты не поняла", "не поняла меня", "ты ошиблась", "не так", "неправильно", "это неправильно", "that was wrong", "got it wrong", "you got it wrong", "wrong"]
+    },
     "first_person": {
       "note": "Every form of the first-person pronoun, plus the English ones. Closed class in the strictest sense: the language has these and no others. A sentence carrying one is about him, which is what makes it a fact rather than a passing complaint.",
       "words": [

internal/phraser/acts.go

@@ -45,6 +45,14 @@ const (
 	// is the only authority the voice path can offer, and this is the one act
 	// it is not enough for (Vikunja #449, #523).
 	ActNeedsAuthedSurface = "act_needs_authed_surface"
+	// ActUnknownTarget — the verb reached a tool and the target did not reach
+	// anything. Named rather than run, because the alias match swallowed the verb
+	// and handed on the next word of the sentence (V-634).
+	ActUnknownTarget = "act_unknown_target"
+	// RepairNoted — he said the turn was wrong and did not say what it should
+	// have been. She confirms the label landed and does not ask, because the
+	// answer would be one of her own intent names (V-636).
+	RepairNoted = "repair_noted"
 
 	EcoDenied        = "eco_denied"
 	EcoDown          = "eco_down"
@@ -76,7 +84,7 @@ const (
 var actKeys = []string{
 	ActDone, ActDoneOut, ActDoneEntity, ActConfirm, ActConfirmEntity, ActWhich,
 	ActFail, ActFailOut, ActFailEntity, ActServerDown, ActWithdrawn, ActNeedsArgs,
-	ActNeedsAuthedSurface,
+	ActNeedsAuthedSurface, ActUnknownTarget, RepairNoted,
 	EcoDenied, EcoDown, EcoAmbiguous, EcoUnknownEntity, EcoNoNexus, EcoAboutWhat, EcoRecall,
 	AttentionNone, AttentionList, AttentionFail,
 	AttentionNoneEntity, AttentionListEntity, AttentionFailEntity,
@@ -102,6 +110,8 @@ var actFloor = map[string]string{
 	ActServerDown:         "инструмент есть, но сервер не подключён.",
 	ActWithdrawn:          "сервер больше не отдаёт этот инструмент — сняла его с разрешённых, посмотри /tools.",
 	ActNeedsArgs:          "тут нужны аргументы, из голоса не соберу. угадывать не буду.",
+	RepairNoted:           "поняла, отметила, что ответила не так.",
+	ActUnknownTarget:      "«{name}» — не знаю такой цели. назови её как в системе.",
 	ActNeedsAuthedSurface: "это из голоса не выполню — после него ничего не вернуть. запусти сам.",
 
 	EcoDenied:        "{name} отклоняет доступ, проверь токен.",

internal/phraser/acts_ru_v1.json

@@ -60,6 +60,14 @@
       "fixed": true,
       "variants": ["тут нужны аргументы, из голоса не соберу. угадывать не буду."]
     },
+    "repair_noted": {
+      "fixed": true,
+      "variants": ["поняла, отметила, что ответила не так."]
+    },
+    "act_unknown_target": {
+      "fixed": true,
+      "variants": ["«{name}» — не знаю такой цели. назови её как в системе."]
+    },
     "act_needs_authed_surface": {
       "fixed": true,
       "variants": ["это из голоса не выполню — после него ничего не вернуть. запусти сам."]

internal/store/conncap_test.go

@@ -0,0 +1,154 @@
+package store
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"path/filepath"
+	"sort"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+)
+
+// conncap_test.go measures whether a read queues behind a write at
+// SetMaxOpenConns(1), which is what openAt sets (V-642). It is a measurement
+// harness, not an assertion: the numbers it prints are the evidence, and the
+// decision to move the cap or leave it belongs in docs/evals.
+//
+// Run it with -v, and note that it is skipped under -short because it spends
+// seconds on purpose.
+
+// openCapped opens a plaintext store at the given connection cap. In-package,
+// so it can reach the handle openAt caps at 1.
+func openCapped(t *testing.T, cap int) *Store {
+	t.Helper()
+	path := filepath.Join(t.TempDir(), "cap.db")
+	db, err := openAt(context.Background(), path)
+	if err != nil {
+		t.Fatalf("openAt: %v", err)
+	}
+	db.SetMaxOpenConns(cap)
+	s := &Store{db: db}
+	t.Cleanup(func() { _ = s.Close() })
+	return s
+}
+
+func percentile(d []time.Duration, p float64) time.Duration {
+	if len(d) == 0 {
+		return 0
+	}
+	i := int(float64(len(d)-1) * p)
+	return d[i]
+}
+
+// seedFacts writes n facts so a read has rows to decode.
+func seedFacts(t *testing.T, s *Store, n int) {
+	t.Helper()
+	ctx := context.Background()
+	now := time.Now().UTC()
+	for i := 0; i < n; i++ {
+		key := fmt.Sprintf("seed_%d", i)
+		if _, err := s.SetValue(ctx, KindSelf, key, "tap:test",
+			map[string]int{"ml": i}, now.Add(time.Duration(i)*time.Millisecond)); err != nil {
+			t.Fatalf("seed %d: %v", i, err)
+		}
+	}
+}
+
+// measureReadsUnderWrites reports read latency percentiles while a writer
+// writes at a fixed pace. The pace matters: an unpaced writer completes a
+// different number of writes at each cap, because at a higher cap it competes
+// with the readers for the write lock instead of taking turns on one
+// connection. Two runs that did different work cannot be compared.
+// It runs for a fixed wall-clock window rather than a fixed read count, so the
+// paced writer does the same work at every cap. Tying the window to a read
+// count made the faster configuration receive fewer writes.
+func measureReadsUnderWrites(t *testing.T, s *Store, window, pace time.Duration) []time.Duration {
+	t.Helper()
+	ctx := context.Background()
+
+	var stop atomic.Bool
+	var writes atomic.Int64
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		now := time.Now().UTC()
+		for i := 0; !stop.Load(); i++ {
+			key := fmt.Sprintf("hot_%d", i%16)
+			if _, err := s.SetValue(ctx, KindSelf, key, "tap:test",
+				map[string]int{"n": i}, now.Add(time.Duration(i)*time.Millisecond)); err != nil {
+				t.Errorf("write: %v", err)
+				return
+			}
+			writes.Add(1)
+			time.Sleep(pace)
+		}
+	}()
+
+	var lat []time.Duration
+	deadline := time.Now().Add(window)
+	for time.Now().Before(deadline) {
+		start := time.Now()
+		if _, err := s.RecentFacts(ctx, 50); err != nil {
+			t.Fatalf("RecentFacts: %v", err)
+		}
+		lat = append(lat, time.Since(start))
+	}
+	stop.Store(true)
+	wg.Wait()
+	t.Logf("in %v: %d reads, %d writes", window, len(lat), writes.Load())
+
+	sort.Slice(lat, func(i, j int) bool { return lat[i] < lat[j] })
+	return lat
+}
+
+// TestConnCap_ReadLatencyUnderWrites is the V-642 measurement: read latency at
+// cap 1 against cap 4, same workload, same schema, same driver.
+func TestConnCap_ReadLatencyUnderWrites(t *testing.T) {
+	if testing.Short() {
+		t.Skip("measurement harness; runs for seconds")
+	}
+	for _, cap := range []int{1, 4} {
+		t.Run(fmt.Sprintf("cap=%d", cap), func(t *testing.T) {
+			s := openCapped(t, cap)
+			seedFacts(t, s, 500)
+			lat := measureReadsUnderWrites(t, s, 2*time.Second, 2*time.Millisecond)
+			t.Logf("cap=%d reads=%d p50=%v p95=%v max=%v",
+				cap, len(lat), percentile(lat, 0.50), percentile(lat, 0.95), lat[len(lat)-1])
+		})
+	}
+}
+
+// TestConnCap_ReadBlocksBehindOpenSnapshot is the sharper claim: at cap 1 an
+// open read-only transaction holds the only connection, so an unrelated read
+// cannot proceed until it commits. This is why the store exposes no way to
+// begin one — `Store.DB` used to, and was deleted in V-642 with no caller. The
+// test stays as the reason, so re-adding that seam fails a measurement rather
+// than shipping a stall.
+func TestConnCap_ReadBlocksBehindOpenSnapshot(t *testing.T) {
+	if testing.Short() {
+		t.Skip("measurement harness; waits on a timeout")
+	}
+	for _, cap := range []int{1, 4} {
+		t.Run(fmt.Sprintf("cap=%d", cap), func(t *testing.T) {
+			s := openCapped(t, cap)
+			seedFacts(t, s, 50)
+
+			tx, err := s.db.BeginTx(context.Background(), &sql.TxOptions{ReadOnly: true})
+			if err != nil {
+				t.Fatalf("BeginTx: %v", err)
+			}
+			defer func() { _ = tx.Rollback() }()
+
+			ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+			defer cancel()
+			start := time.Now()
+			_, err = s.RecentFacts(ctx, 10)
+			t.Logf("cap=%d read alongside an open snapshot: waited %v, err=%v",
+				cap, time.Since(start).Round(time.Millisecond), err)
+		})
+	}
+}

internal/store/store.go

@@ -95,7 +95,20 @@ func openAt(ctx context.Context, path string) (*sql.DB, error) {
 	if err != nil {
 		return nil, fmt.Errorf("open %s: %w", path, err)
 	}
-	// single writer expected; the daemon is the only process touching the db.
+	// One connection, so every statement is serialised at the database and no
+	// caller above needs a lock of its own. internal/ipc's Server relies on
+	// exactly this, which is why the cap is an invariant rather than a tuning
+	// knob: raising it moves the serialisation guarantee somewhere it is not
+	// written down.
+	//
+	// Measured on 07-08-2026 (V-642, docs/evals/2026-08-07-store-connection-cap.md).
+	// WAL exists to let readers run beside one writer, and the cap gives that
+	// up, but reads do not queue: p50 594µs against 525µs at a cap of four,
+	// while write throughput more than halves. The one thing the cap cannot
+	// survive is a long-lived transaction, which holds the only connection and
+	// stalls every read for its lifetime. So the store begins none, and
+	// TestConnCap_ReadBlocksBehindOpenSnapshot is the standing measurement of
+	// what re-adding one would cost.
 	db.SetMaxOpenConns(1)
 	if _, err := db.ExecContext(ctx, schemaSQL); err != nil {
 		if closeErr := db.Close(); closeErr != nil {
@@ -133,13 +146,6 @@ func (s *Store) Close() error {
 	return s.enc.closeAndSeal(s.db)
 }
 
-// DB exposes the underlying handle for internal read-only snapshots.
-// Used by the loop to take a consistent read under a single transaction.
-// Modules never receive this handle — core mediates.
-func (s *Store) DB(ctx context.Context) (*sql.Tx, error) {
-	return s.db.BeginTx(ctx, &sql.TxOptions{ReadOnly: true})
-}
-
 var (
 	// ErrNoFact — no non-voided row exists for this key.
 	ErrNoFact = errors.New("store: no fact for key")

internal/tool/tool.go

@@ -39,6 +39,7 @@ import (
 	"os/exec"
 	"strings"
 	"time"
+	"unicode"
 
 	"github.com/kami/maven/internal/ipc"
 	"github.com/kami/maven/internal/mcp"
@@ -73,8 +74,27 @@ var (
 	// confirm turn that would help: asking again would imply the second answer
 	// changes the outcome.
 	ErrNeedsAuthedSurface = errors.New("tool is irreversible and voice may not authorise it")
+	// ErrUnknownTarget — the act matched a tool and the target it carries cannot
+	// be one. A process row's args become argv for a real program, and a unit,
+	// container or host is named in ASCII on this box, so a Cyrillic tail is a
+	// word from the sentence rather than a target. Held apart from every failure
+	// above because the command never ran: forwarding it would spend a confirm
+	// turn on an act that cannot succeed, and then report the program's own
+	// confusion as if she had tried something sensible (V-634).
+	ErrUnknownTarget = errors.New("the act names a target the system cannot have")
 )
 
+// UnknownTargetError carries the word the executor could not place, because the
+// reply names it: "«роутер» — не знаю такой цели" is actionable and "не
+// получилось" sends him to the log. errors.Is(err, ErrUnknownTarget) holds.
+type UnknownTargetError struct{ Target string }
+
+func (e *UnknownTargetError) Error() string {
+	return fmt.Sprintf("%s: %q", ErrUnknownTarget, e.Target)
+}
+
+func (e *UnknownTargetError) Unwrap() error { return ErrUnknownTarget }
+
 // MCPCaller is the seam for an act that is an MCP tool call rather than a
 // process (Vikunja #251). internal/mcp.Manager satisfies it via CallPositional.
 // nil ⇒ MCP is not configured, and an MCP row refuses to run rather than
@@ -144,6 +164,16 @@ func (e *Executor) Exec(ctx context.Context, name string, args []string, confirm
 	if t.Status != "enabled" {
 		return "", ErrNotEnabled
 	}
+	// A process row's args become argv, so the target has to be able to exist.
+	// Checked before the confirm gate below, because asking "выполнить X?" about
+	// an act that cannot run spends a turn on nothing (V-634). The other two
+	// dispatches are exempt: an MCP tool may take Russian text as an argument,
+	// since a task title is not a target, and a house row drops the spoken args.
+	if !isMCPRow(t.Cmd) && !isHouseRow(t.Cmd) {
+		if bad, ok := firstUnknownTarget(args); !ok {
+			return "", &UnknownTargetError{Target: bad}
+		}
+	}
 	// The tier decides, not the column (Vikunja #449). RiskOf reads the row and
 	// answers the three questions the boolean never did: which acts are
 	// destructive, whether a confirm sticks (it never does), and what an
@@ -260,3 +290,41 @@ func (m *Matcher) Allowlist() []string { return m.names() }
 func (m *Matcher) Match(utterance string) (string, []string, bool) {
 	return router.DefaultActMatcher{Fns: m.names(), Aliases: m.aliases}.Match(utterance)
 }
+
+// firstUnknownTarget reports whether every arg could name something on this box,
+// and returns the first that could not.
+//
+// The check is the script, not a word list: this is not a fourth Russian
+// mechanism (CLAUDE.md § "Russian patterns"). A systemd unit, a container, a
+// host and a path are written in ASCII, so a non-ASCII rune in an argv element
+// means the alias match swallowed the verb and handed on the next word of the
+// sentence. "перезагрузи роутер" is the case: restart is a real tool and
+// "роутер" is a real word, and `systemctl restart роутер` is neither.
+//
+// Every process row this box enables takes a system identifier (systemctl,
+// docker, journalctl, df). A process row that legitimately wanted Russian text
+// would want a different dispatch, not a hole in this check.
+//
+// It deliberately does not try to guess the right target. Identity is Nexus's
+// (CLAUDE.md § "The ecosystem"), and a target Nexus resolves reaches Hexis
+// through handleHexisAct before this executor is asked.
+func firstUnknownTarget(args []string) (string, bool) {
+	for _, a := range args {
+		for _, r := range a {
+			if r > unicode.MaxASCII {
+				return a, false
+			}
+		}
+	}
+	return "", true
+}
+
+func isMCPRow(cmd []string) bool {
+	_, _, ok := mcp.ParseCmd(cmd)
+	return ok
+}
+
+func isHouseRow(cmd []string) bool {
+	_, _, ok := smarthome.ParseCmd(cmd)
+	return ok
+}

internal/tool/tool_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"reflect"
+	"strings"
 	"testing"
 	"time"
 
@@ -320,3 +321,55 @@ func TestExecEmptyCmdRefuses(t *testing.T) {
 		t.Fatal("a row with no cmd ran a program named by the utterance")
 	}
 }
+
+// V-634. The alias match resolves the verb and hands on the next word of the
+// sentence, so "перезагрузи роутер" became `systemctl restart роутер`: a real
+// tool, a real word, and a target that cannot exist on this box.
+func TestExecRefusesATargetTheSystemCannotHave(t *testing.T) {
+	api := fakeAPI{tools: map[string]ipc.Tool{
+		"restart": {Name: "restart", Cmd: []string{"systemctl", "restart"}, Status: "enabled"},
+		"drop":    {Name: "drop", Cmd: []string{"dropdb"}, Destructive: true, Status: "enabled"},
+	}}
+	ran := false
+	e := NewExecutor(api, 0)
+	e.run = func(context.Context, []string) (string, error) { ran = true; return "ok", nil }
+
+	_, err := e.Exec(context.Background(), "restart", []string{"роутер"}, false)
+	if !errors.Is(err, ErrUnknownTarget) {
+		t.Fatalf("err = %v, want ErrUnknownTarget", err)
+	}
+	if ran {
+		t.Fatal("the program was called with a target that cannot exist")
+	}
+	// The word is in the error, because a reply naming no word sends him to the log.
+	if !strings.Contains(err.Error(), "роутер") {
+		t.Errorf("err %v does not name the word she could not place", err)
+	}
+	// Ahead of the confirm gate: asking about an act that cannot run spends a
+	// turn on nothing.
+	if _, err := e.Exec(context.Background(), "drop", []string{"база"}, false); !errors.Is(err, ErrUnknownTarget) {
+		t.Errorf("destructive row: err = %v, want ErrUnknownTarget before ErrNeedsConfirm", err)
+	}
+	// An ASCII target still runs, unchanged.
+	if _, err := e.Exec(context.Background(), "restart", []string{"nginx"}, false); err != nil {
+		t.Errorf("restart nginx: %v", err)
+	}
+}
+
+// An MCP argument is not a target. A task title is Russian and always was.
+func TestExecMCPRowKeepsRussianArgs(t *testing.T) {
+	api := fakeAPI{tools: map[string]ipc.Tool{
+		"vikunja_create": {
+			Name: "vikunja_create", Status: "enabled",
+			Cmd: []string{"mcp", "vikunja", "create_task"},
+		},
+	}}
+	m := &fakeMCP{out: "создала"}
+	e := NewExecutor(api, time.Second).WithMCP(m)
+	if _, err := e.Exec(context.Background(), "vikunja_create", []string{"купить хлеб"}, false); err != nil {
+		t.Fatalf("exec: %v", err)
+	}
+	if len(m.args) != 1 || m.args[0] != "купить хлеб" {
+		t.Fatalf("args = %v, want the Russian title forwarded", m.args)
+	}
+}

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?"
 	}