web: seed a backdated event from the routines page (V-518)

A "seed" action on the existing POST /routines, taking key, value and
ago-in-hours. That route is already step-up gated and already the place a
proposed routine is accepted or dismissed, so seeding lands next to the thing
it produces. No new page and no second gated surface.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011x5DgnExQ5XZy8TZPs5bot

cmd/mavend/main.go

@@ -127,8 +127,10 @@ func run(args []string) error {
 	cfgPath := flag.String("config", defaultConfigPath(), "path to mavend JSON config")
 	wrappedKeyPath := flag.String("wrapped-key-file", "", "path to wrapped encryption key blob (enables cold-start unlock)")
 	reembed := flag.Bool("reembed", false, "re-embed every stored note and fact with the configured embedder, then serve normally (run once after an embedder swap; the daemon does not answer until it finishes)")
+	allowSeed := flag.Bool("allow-seed", false, "enable the backdated seed_event write path (QA only: it lets a caller place a fact in the past and mint a routine the tick loop will then act on; off means the method has nothing to write with)")
 	flag.CommandLine.Parse(args)
 	reembedOnStart = *reembed
+	allowSeedOnStart = *allowSeed
 	cfg, err := config.Load(*cfgPath)
 	if err != nil {
 		return err
@@ -338,6 +340,7 @@ func run(args []string) error {
 			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),
+			seedStore:        seedStoreIfAllowed(st),
 		}
 		if voiceW != nil && voiceW.handler != nil {
 			api := coreAPI.(*daemonAPI)
@@ -605,6 +608,7 @@ func run(args []string) error {
 				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),
+				seedStore:        seedStoreIfAllowed(st),
 			}
 			if voiceW != nil && voiceW.handler != nil {
 				newAPI.chatFn = voiceW.handler.handleText

cmd/mavend/seed.go

@@ -0,0 +1,107 @@
+// mavend/seed.go — the backdated-fact seam (Vikunja #518).
+//
+// The pattern detector needs four events for one action+object, spread by at
+// least pattern.MinIntervalDays, before it proposes a routine. Nothing could
+// produce that against a running daemon in one sitting: the only writer is a
+// fact write at time.Now(), so V-43, V-46, V-247 and V-254 all stopped at the
+// same missing step and had been stopped there since they were filed.
+//
+// This is the write path that unblocks them, and it is deliberately the narrow
+// one. It takes a fact, not an event, so pattern.Extract runs for real and a
+// key the extractor ignores seeds nothing. It runs detectAndPropose, so what a
+// seed proves is the daemon's own wiring rather than the detector in isolation
+// — which is what an eval-lab fixture would have proved, and is not what those
+// four tasks doubt.
+//
+// It is off unless mavend was started with -allow-seed, and AuthStepUp in the
+// authority table besides. See ipc.SeedEventReq and auth.Requirement.
+package main
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"fmt"
+	"log"
+
+	"github.com/kami/maven/internal/ipc"
+	"github.com/kami/maven/internal/pattern"
+	"github.com/kami/maven/internal/store"
+)
+
+// errSeedDisabled — what a caller gets on an ordinary box. Named rather than
+// inline so the mavweb route can tell "not allowed here" apart from "the seed
+// ran and the extractor declined", which look the same to a reader otherwise.
+var errSeedDisabled = errors.New("mavend: seeding is off (start with -allow-seed)")
+
+// seedSource — every seeded fact carries this, and no other writer uses it.
+// The point is that seeded data stays identifiable forever: a fact that came
+// from a QA sitting must never be mistaken for something he said, either by a
+// person reading /history or by the wipe in V-494 when it lands.
+const seedSource = "seed:qa"
+
+// seedStoreIfAllowed returns st only when -allow-seed was passed, and logs the
+// fact loudly when it does. A box that can rewrite its own past should say so
+// in its boot log, so nobody reads a seeded routine months later as evidence of
+// something he actually did.
+func seedStoreIfAllowed(st *store.Store) *store.Store {
+	if !allowSeedOnStart {
+		return nil
+	}
+	log.Printf("seed: -allow-seed is ON — backdated fact writes are permitted under source %q (Vikunja #518)", seedSource)
+	return st
+}
+
+// SeedEvent writes the fact at the caller's timestamp, extracts an event from
+// it, and runs the same detect-and-propose step the voice path runs.
+//
+// Best-effort is NOT the shape here, unlike detectPattern: a seed that half
+// worked is a QA result nobody can trust, so every step reports its own
+// failure. Extraction declining is not a failure — it is the extractor's
+// documented answer for a value outside its lexicon, and Extracted says so.
+func (d *daemonAPI) SeedEvent(ctx context.Context, req ipc.SeedEventReq) (ipc.SeedEventResp, error) {
+	if d.seedStore == nil {
+		return ipc.SeedEventResp{}, errSeedDisabled
+	}
+	if req.Key == "" || req.Value == "" {
+		return ipc.SeedEventResp{}, errors.New("mavend: seed needs a key and a value")
+	}
+	if req.Ts.IsZero() {
+		return ipc.SeedEventResp{}, errors.New("mavend: seed needs an explicit timestamp")
+	}
+
+	// No Subject, unlike the voice path: a seeded key must not queue a Nexus
+	// resolution. QA data has no business reaching the ecosystem.
+	factID, err := d.seedStore.WriteFact(ctx, req.Ts, store.KindSelf, req.Key, req.Value, seedSource, 1.0, sql.NullInt64{})
+	if err != nil {
+		return ipc.SeedEventResp{}, fmt.Errorf("seed write fact: %w", err)
+	}
+	resp := ipc.SeedEventResp{FactID: factID}
+
+	ev := pattern.Extract(factID, req.Key, req.Value, req.Ts)
+	if ev == nil {
+		// The fact is written and stays written. Saying so matters: a caller
+		// that assumed a seed always produces an event would otherwise read
+		// four silent successes and conclude the detector is broken.
+		log.Printf("seed: %s=%s wrote fact %d, no event (value outside the action lexicon)", req.Key, req.Value, factID)
+		return resp, nil
+	}
+	resp.Extracted, resp.Action, resp.Object = true, ev.Action, ev.Object
+
+	eventID, err := d.seedStore.CreateEvent(ctx, factID, ev.Action, ev.Object, req.Ts)
+	if err != nil {
+		return resp, fmt.Errorf("seed create event: %w", err)
+	}
+	resp.EventID = eventID
+
+	r, routineID, err := detectAndPropose(ctx, d.seedStore, ev.Action, ev.Object, req.Ts)
+	if err != nil {
+		return resp, fmt.Errorf("seed detect: %w", err)
+	}
+	if r == nil {
+		return resp, nil // too few events yet, too irregular, or already decided
+	}
+	resp.Proposed, resp.RoutineID, resp.IntervalDays = true, routineID, r.IntervalDays
+	log.Printf("seed: proposed routine %d — %s/%s every %.1f days", routineID, r.Action, r.Object, r.IntervalDays)
+	return resp, nil
+}

cmd/mavend/seed_test.go

@@ -0,0 +1,105 @@
+package main
+
+import (
+	"context"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/kami/maven/internal/ipc"
+)
+
+// Off is the default and it must mean "nothing to write with", not "permission
+// to refuse later". A daemonAPI with no seedStore writes no fact at all.
+func TestSeedRefusedWithoutTheFlag(t *testing.T) {
+	d := &daemonAPI{CoreAPI: ipc.UnimplementedCoreAPI{}}
+	_, err := d.SeedEvent(context.Background(), ipc.SeedEventReq{
+		Key: "cat_water_fountain", Value: "заправил", Ts: time.Now(),
+	})
+	if err == nil {
+		t.Fatal("seed succeeded with no seedStore")
+	}
+	if !strings.Contains(err.Error(), "-allow-seed") {
+		t.Errorf("error does not name the flag: %v", err)
+	}
+}
+
+// The whole point of the task: four seeds spread past the detector's floor
+// produce a proposal against the real daemon path, which is what nobody could
+// do before (Vikunja #518). Three seeds must NOT propose — MinEvents is four,
+// and a test that only checked the happy end would pass on an off-by-one.
+func TestSeedFourEventsProposesARoutine(t *testing.T) {
+	ctx := context.Background()
+	d := &daemonAPI{CoreAPI: ipc.UnimplementedCoreAPI{}, seedStore: newTestStore(t)}
+	now := time.Now()
+
+	var last ipc.SeedEventResp
+	// Oldest first, three hours apart — past MinIntervalDays (two hours).
+	for i := 3; i >= 0; i-- {
+		var err error
+		last, err = d.SeedEvent(ctx, ipc.SeedEventReq{
+			Key:   "cat_water_fountain",
+			Value: "заправил",
+			Ts:    now.Add(-time.Duration(i) * 3 * time.Hour),
+		})
+		if err != nil {
+			t.Fatalf("seed %d: %v", i, err)
+		}
+		if !last.Extracted {
+			t.Fatalf("seed %d: no event extracted from a lexicon verb", i)
+		}
+		if i > 0 && last.Proposed {
+			t.Fatalf("proposed after only %d events, MinEvents is 4", 4-i)
+		}
+	}
+	if !last.Proposed {
+		t.Fatal("four spaced events did not propose a routine")
+	}
+	if last.Action != "refill" || last.Object != "cat_water_fountain" {
+		t.Errorf("wrong pair: %s/%s", last.Action, last.Object)
+	}
+	if last.IntervalDays < 0.1 {
+		t.Errorf("interval %v — the detector saw a burst, not a rhythm", last.IntervalDays)
+	}
+
+	// The proposal is readable through the same list the /routines page uses,
+	// which is the wiring an eval-lab fixture would not have proved.
+	proposed, err := d.seedStore.ListProposedRoutines(ctx)
+	if err != nil {
+		t.Fatalf("list: %v", err)
+	}
+	if len(proposed) != 1 {
+		t.Fatalf("expected 1 proposed routine, got %d", len(proposed))
+	}
+}
+
+// A value outside the action lexicon writes the fact and says it seeded
+// nothing. Silence here would read as four working seeds and a broken
+// detector.
+func TestSeedReportsWhenExtractionDeclines(t *testing.T) {
+	d := &daemonAPI{CoreAPI: ipc.UnimplementedCoreAPI{}, seedStore: newTestStore(t)}
+	resp, err := d.SeedEvent(context.Background(), ipc.SeedEventReq{
+		Key: "mood", Value: "ok", Ts: time.Now(),
+	})
+	if err != nil {
+		t.Fatalf("seed: %v", err)
+	}
+	if resp.FactID == 0 {
+		t.Error("fact was not written")
+	}
+	if resp.Extracted || resp.EventID != 0 || resp.Proposed {
+		t.Errorf("claimed an event for a non-action value: %+v", resp)
+	}
+}
+
+// A seed with no timestamp is refused rather than defaulting to now: the only
+// reason this seam exists is the caller choosing when, so a zero Ts is a bug in
+// the caller and must not silently write a fact at the wrong time.
+func TestSeedRequiresAnExplicitTimestamp(t *testing.T) {
+	d := &daemonAPI{CoreAPI: ipc.UnimplementedCoreAPI{}, seedStore: newTestStore(t)}
+	if _, err := d.SeedEvent(context.Background(), ipc.SeedEventReq{
+		Key: "cat_water_fountain", Value: "заправил",
+	}); err == nil {
+		t.Fatal("seed accepted a zero timestamp")
+	}
+}

cmd/mavend/tick_api.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/kami/maven/internal/ipc"
 	"github.com/kami/maven/internal/loop"
+	"github.com/kami/maven/internal/store"
 )
 
 // daemonAPI wraps a store-backed CoreAPI and overrides TickTrace with the
@@ -22,6 +23,11 @@ type daemonAPI struct {
 	chatFn           func(ctx context.Context, conversation, text string) string
 	getMCPServers    func() []ipc.MCPServerStatus
 	getEvents        func(n int) []ipc.IntakeEvent
+	// seedStore — non-nil ONLY when mavend was started with -allow-seed. It is
+	// the whole off-switch for the backdated write path (Vikunja #518), and it
+	// is a store rather than a bool so that leaving the flag off means the
+	// method has nothing to write with, not merely permission to refuse.
+	seedStore *store.Store
 }
 
 // RecentEvents — the unified intake journal (Vikunja #283). Empty, not an

cmd/mavend/voicewire.go

@@ -552,6 +552,11 @@ func repairFactVectors(dataStore *store.Store, emb router.Embedder) {
 // runReembed.
 var reembedOnStart bool
 
+// allowSeedOnStart is the -allow-seed flag (set in run()). Opt-in, and the
+// default is the one that matters: a box nobody is testing has no live path to
+// write a fact into the past. See seed.go and Vikunja #518.
+var allowSeedOnStart bool
+
 // checkStoredEmbedder compares the embedder we just loaded with the one that
 // wrote the vectors already in the DB (Vikunja #378).
 //

cmd/mavweb/main.go

@@ -1094,34 +1094,53 @@ func handleRoutines(w http.ResponseWriter, r *http.Request, core ipc.CoreAPI, se
 	var msg string
 	if r.Method == http.MethodPost {
 		action := r.FormValue("action")
-		idStr := r.FormValue("id")
-		var rid int64
-		if n, _ := fmt.Sscanf(idStr, "%d", &rid); n != 1 {
-			http.Error(w, "invalid id", http.StatusBadRequest)
-			return
-		}
-		switch action {
-		case "accept":
+		// "seed" is the one action with no routine to act on — it is what
+		// MAKES a routine (Vikunja #518), so it runs before the id parse. It
+		// lives on this route rather than a page of its own because it is
+		// already the step-up-gated surface for this table, and a second gated
+		// surface is a second thing to get wrong.
+		if action == "seed" {
 			if !stepUpOK(session, requireStepUp) {
 				http.Error(w, "step-up required: assert a passkey first", http.StatusForbidden)
 				return
 			}
-			if err := acceptRoutine(ctx, core, rid); err != nil {
-				log.Printf("routines: accept %d: %v", rid, err)
-				http.Error(w, "accept failed: "+err.Error(), http.StatusBadGateway)
+			out, err := seedRoutineEvent(ctx, core, r)
+			if err != nil {
+				log.Printf("routines: seed: %v", err)
+				http.Error(w, "seed failed: "+err.Error(), http.StatusBadGateway)
 				return
 			}
-			msg = "accepted routine — maven will remind you"
-		case "dismiss":
-			if err := core.DismissProposedRoutine(ctx, rid); err != nil {
-				log.Printf("routines: dismiss %d: %v", rid, err)
-				http.Error(w, "dismiss failed: "+err.Error(), http.StatusBadGateway)
+			msg = out
+		} else {
+			idStr := r.FormValue("id")
+			var rid int64
+			if n, _ := fmt.Sscanf(idStr, "%d", &rid); n != 1 {
+				http.Error(w, "invalid id", http.StatusBadRequest)
+				return
+			}
+			switch action {
+			case "accept":
+				if !stepUpOK(session, requireStepUp) {
+					http.Error(w, "step-up required: assert a passkey first", http.StatusForbidden)
+					return
+				}
+				if err := acceptRoutine(ctx, core, rid); err != nil {
+					log.Printf("routines: accept %d: %v", rid, err)
+					http.Error(w, "accept failed: "+err.Error(), http.StatusBadGateway)
+					return
+				}
+				msg = "accepted routine — maven will remind you"
+			case "dismiss":
+				if err := core.DismissProposedRoutine(ctx, rid); err != nil {
+					log.Printf("routines: dismiss %d: %v", rid, err)
+					http.Error(w, "dismiss failed: "+err.Error(), http.StatusBadGateway)
+					return
+				}
+				msg = "dismissed routine"
+			default:
+				http.Error(w, "unknown action", http.StatusBadRequest)
 				return
 			}
-			msg = "dismissed routine"
-		default:
-			http.Error(w, "unknown action", http.StatusBadRequest)
-			return
 		}
 	}
 	proposed, err := core.ListProposedRoutines(ctx)
@@ -1158,6 +1177,45 @@ func toRoutineViews(rs []ipc.ProposedRoutine) []routineView {
 // may do it (Vikunja #367): accepting gives the tick loop a standing new
 // reason to speak, which DESIGN.md puts at layer 3, and the button here is
 // behind step-up. Voice can park the question and dismiss, never accept.
+// seedRoutineEvent drives one backdated fact write through core (Vikunja #518),
+// so the pattern detector can be exercised against a running daemon instead of
+// over real days. Refused unless mavend was started with -allow-seed; on an
+// ordinary box the error says so and nothing is written.
+//
+// Takes "ago" rather than an absolute timestamp — hours before now, as a float
+// so a QA sitting can space four seeds three hours apart without doing clock
+// arithmetic. The detector's floor is two hours, and "0" is a legal answer
+// meaning now.
+func seedRoutineEvent(ctx context.Context, core ipc.CoreAPI, r *http.Request) (string, error) {
+	key := strings.TrimSpace(r.FormValue("key"))
+	value := strings.TrimSpace(r.FormValue("value"))
+	if key == "" || value == "" {
+		return "", errors.New("seed needs a key and a value")
+	}
+	agoHours, err := strconv.ParseFloat(strings.TrimSpace(r.FormValue("ago")), 64)
+	if err != nil {
+		return "", fmt.Errorf("seed: bad ago (hours before now): %w", err)
+	}
+	if agoHours < 0 {
+		return "", errors.New("seed: ago is hours BEFORE now, so it cannot be negative")
+	}
+	resp, err := core.SeedEvent(ctx, ipc.SeedEventReq{
+		Key:   key,
+		Value: value,
+		Ts:    time.Now().Add(-time.Duration(agoHours * float64(time.Hour))),
+	})
+	if err != nil {
+		return "", err
+	}
+	if !resp.Extracted {
+		return fmt.Sprintf("wrote fact %d, but %q is not in the action lexicon — no event, no pattern", resp.FactID, value), nil
+	}
+	if !resp.Proposed {
+		return fmt.Sprintf("seeded %s/%s (fact %d, event %d) — not enough yet to propose", resp.Action, resp.Object, resp.FactID, resp.EventID), nil
+	}
+	return fmt.Sprintf("seeded %s/%s and PROPOSED routine %d, every %.1f days", resp.Action, resp.Object, resp.RoutineID, resp.IntervalDays), nil
+}
+
 func acceptRoutine(ctx context.Context, core ipc.CoreAPI, id int64) error {
 	proposed, err := core.ListProposedRoutines(ctx)
 	if err != nil {

internal/auth/policy.go

@@ -91,6 +91,19 @@ func Requirement(m ipc.Method) Authority {
 		// can do is make Maven stop recognising someone, which is the state the
 		// box ships in anyway.
 		return AuthWrite
+	case ipc.MethodSeedEvent:
+		// The one backdating write path in the tree (Vikunja #518). AuthStepUp,
+		// the same rung as mutating the tool allowlist, and for a reason that is
+		// not about privilege: every other write records when something actually
+		// happened, and this one asserts it. A caller who can place a fact in the
+		// past can manufacture a routine Maven will then act on forever, which is
+		// the tick loop obeying evidence nobody produced.
+		//
+		// Step-up is not the real gate and is not meant to be. mavend refuses the
+		// method entirely unless started with -allow-seed, so the ordinary state
+		// of the box is that no gesture reaches it. This rung is what stops a
+		// module from calling it on a box where QA left the flag on.
+		return AuthStepUp
 	case ipc.MethodWriteFact:
 		return AuthWrite
 	case ipc.MethodIngestMail:

internal/ipc/api.go

@@ -184,6 +184,48 @@ type CaptureTaskResp struct {
 	Promoted bool `json:"promoted,omitempty"`
 }
 
+// SeedEventReq — write one fact at a caller-supplied timestamp and run the
+// pattern path over it, so a recurring routine can be produced on demand
+// instead of over real days (Vikunja #518).
+//
+// This is the ONLY backdating write path in the tree, and it exists for one
+// reason: the detector needs four events spread over hours before it proposes
+// anything, so V-43, V-46, V-247 and V-254 could not be verified against a
+// running daemon at all. A store fixture would have exercised the detector
+// without the wiring those tasks doubt.
+//
+// Two things hold it shut. It is AuthStepUp in the authority table, the same
+// rung as mutating the tool allowlist. And mavend refuses it outright unless
+// started with -allow-seed, so a box nobody is testing carries no live
+// backdating path even for a caller who cleared the gate.
+//
+// Key and Value are a fact, not an event: extraction runs for real, so a key
+// the extractor ignores seeds nothing and says so. That is deliberate — a
+// seam that accepted action and object directly would let QA prove a detector
+// against events no utterance could ever produce.
+type SeedEventReq struct {
+	Key   string    `json:"key"`
+	Value string    `json:"value"`
+	Ts    time.Time `json:"ts"`
+}
+
+// SeedEventResp — what the seed produced. Extracted is false when the fact was
+// written but yielded no event, which is the extractor declining rather than a
+// failure. Proposed is true only when this seed completed a pattern; the first
+// three seeds of a run return false with no routine.
+type SeedEventResp struct {
+	FactID    int64 `json:"fact_id"`
+	EventID   int64 `json:"event_id,omitempty"`
+	Extracted bool  `json:"extracted"`
+	Action    string `json:"action,omitempty"`
+	Object    string `json:"object,omitempty"`
+	Proposed  bool   `json:"proposed"`
+	RoutineID int64  `json:"routine_id,omitempty"`
+	// IntervalDays — the median the detector settled on, echoed so QA can
+	// check it against the spacing it asked for.
+	IntervalDays float64 `json:"interval_days,omitempty"`
+}
+
 // IngestMailReq — one message a mail reader has fetched, handed to core for
 // extraction (Vikunja #246).
 //

internal/ipc/client.go

@@ -487,6 +487,14 @@ func (c *Client) ListProposedRoutines(ctx context.Context) ([]ProposedRoutine, e
 	return r.Routines, nil
 }
 
+func (c *Client) SeedEvent(ctx context.Context, req SeedEventReq) (SeedEventResp, error) {
+	var r SeedEventResp
+	if err := c.call(ctx, MethodSeedEvent, req, &r); err != nil {
+		return SeedEventResp{}, err
+	}
+	return r, nil
+}
+
 func (c *Client) CaptureTask(ctx context.Context, req CaptureTaskReq) (CaptureTaskResp, error) {
 	var r CaptureTaskResp
 	if err := c.call(ctx, MethodCaptureTask, req, &r); err != nil {

internal/ipc/coreapi.go

@@ -110,6 +110,13 @@ type RoutineAPI interface {
 	// loop takes the schedule from there — no reminder is created (Vikunja #366).
 	AcceptProposedRoutine(ctx context.Context, id int64) error
 
+	// SeedEvent writes a backdated fact and runs extraction and detection over
+	// it, so a proposal can be produced in one sitting rather than over real
+	// days (Vikunja #518). See SeedEventReq for why this exists and what keeps
+	// it shut. Daemon-computed, like MorningStatus — the store adapter refuses
+	// it, because the detect-and-propose step lives in mavend.
+	SeedEvent(ctx context.Context, req SeedEventReq) (SeedEventResp, error)
+
 	// MorningStatus returns each configured morning routine's current
 	// checklist state (see internal/morning): active today/now, which items
 	// are done, which are still missing.

internal/ipc/server.go

@@ -524,6 +524,9 @@ var methodTable = map[Method]handlerFunc{
 	MethodCaptureTask: withParams(func(ctx context.Context, api CoreAPI, p CaptureTaskReq) (CaptureTaskResp, error) {
 		return api.CaptureTask(ctx, p)
 	}),
+	MethodSeedEvent: withParams(func(ctx context.Context, api CoreAPI, p SeedEventReq) (SeedEventResp, error) {
+		return api.SeedEvent(ctx, p)
+	}),
 	MethodListTasks: withParams(func(ctx context.Context, api CoreAPI, p listTasksReq) (listTasksResp, error) {
 		out, err := api.ListTasks(ctx, p.Status)
 		if err != nil {

internal/ipc/storeapi.go

@@ -265,6 +265,14 @@ func (a *storeAPI) TickTrace(ctx context.Context) (TickTrace, error) {
 	return TickTrace{}, errors.New("store: tick trace not available via direct store API")
 }
 
+// SeedEvent — same shape as MorningStatus: writing the fact is a store call,
+// but extraction and detect-and-propose live in mavend, and a seed that wrote
+// the fact without running them would be the one thing this seam must not be,
+// a way to prove a detector that never ran (Vikunja #518).
+func (a *storeAPI) SeedEvent(ctx context.Context, req SeedEventReq) (SeedEventResp, error) {
+	return SeedEventResp{}, errors.New("store: seed event not available via direct store API")
+}
+
 func (a *storeAPI) MorningStatus(ctx context.Context) ([]MorningRoutineStatus, error) {
 	return nil, errors.New("store: morning status not available via direct store API")
 }

internal/ipc/unimplemented.go

@@ -105,6 +105,9 @@ func (UnimplementedCoreAPI) DeleteTool(ctx context.Context, name string) error {
 func (UnimplementedCoreAPI) CaptureTask(ctx context.Context, req CaptureTaskReq) (CaptureTaskResp, error) {
 	return CaptureTaskResp{}, ErrNotImplemented
 }
+func (UnimplementedCoreAPI) SeedEvent(ctx context.Context, req SeedEventReq) (SeedEventResp, error) {
+	return SeedEventResp{}, ErrNotImplemented
+}
 func (UnimplementedCoreAPI) ListTasks(ctx context.Context, status string) ([]Task, error) {
 	return nil, ErrNotImplemented
 }

internal/ipc/wire.go

@@ -67,6 +67,7 @@ const (
 	MethodListSpeakers           Method = "list_speakers"
 	MethodForgetSpeaker          Method = "forget_speaker"
 	MethodRecentEvents           Method = "recent_events"
+	MethodSeedEvent              Method = "seed_event"
 
 	// MethodPing — liveness, and the only method that answers in locked mode
 	// without a passkey assertion. It reaches no store, takes no arguments and