news: tell Pete who's out there right now, not just who died

We only ever told Pete about outcomes. Nothing emitted when an expedition
*started*, which is why the two bored adventurers walked into dungeons and the
news feed said nothing at all — it wasn't broken, it had nothing to say.

Two halves:

A roster snapshot, pushed every 2 minutes. Deliberately NOT on the durable fact
queue: a fact is history and losing it loses it forever, so it retries. A
snapshot is a photograph of the present, and a retried one is a lie — by the
time it lands, she's moved. The next tick carries the truth. That's also what
lets Pete's staleness timer work: if we stay down, nothing arrives, and the
board stops claiming to be live instead of insisting forever that Josie is
still in holymachina.

And a "departure" bulletin when a bored adventurer lets itself out.

The snapshot omits opted-out players rather than anonymizing them, and carries a
board token distinct from every event token, so a standing row can't become the
key that links a player's dispatches back together.

The player_meta scan folds last_player_action_at/created_at in Go instead of
COALESCE()ing in SQL — modernc rebuilds time.Time from the declared column type
and COALESCE erases it. A failed scan here would publish an empty board and
every adventurer would vanish from the page.

internal/plugin/adventure.go

@@ -285,6 +285,7 @@ func (p *AdventurePlugin) Init() error {
 	go p.expeditionRecapTicker()
 	go p.expeditionAmbientTicker()
 	go p.expeditionAutoRunTicker()
+	go p.peteRosterTicker()
 	go p.expeditionExtractionSweepTicker()
 	go p.expeditionBoredomTicker()
 

internal/plugin/expedition_boredom.go

@@ -286,6 +286,7 @@ func (p *AdventurePlugin) tryBoredomStart(uid id.UserID, now time.Time) error {
 
 	slog.Info("boredom: adventurer left on its own",
 		"user", uid, "zone", zone.ID, "level", c.Level, "cost", int(cost))
+	emitBoredomDeparture(uid, zone, c.Level)
 	return p.SendDM(uid, renderBoredomDepartureDM(zone, supplies, purchase))
 }
 

internal/plugin/pete.go

@@ -268,6 +268,35 @@ func claimRealmFirst(kind, target string) bool {
 // zone_first would just echo TwinBee back at the same people. Bulletin still
 // gets the story onto the site and into the daily digest, where it reads as a
 // roundup rather than a repeat.
+// emitBoredomDeparture announces that an adventurer got restless and let itself
+// out. The one thing gogobee never used to tell Pete was that an expedition
+// *started* — every dispatch was an outcome — which is why the two live boredom
+// runs produced no news at all.
+//
+// The event_type must be one Pete already knows: an unknown type is a 400, which
+// retries and then parks the bulletin forever. Deploy Pete first.
+func emitBoredomDeparture(userID id.UserID, zone ZoneDefinition, level int) {
+	if !peteclient.Enabled() || !newsEmissionOn() {
+		return
+	}
+	name := charName(userID)
+	if name == "" {
+		return
+	}
+	ts := nowUnix()
+	disc := fmt.Sprintf("departure:%s:%d", zone.ID, ts)
+	emitFact(peteclient.Fact{
+		GUID:       fmt.Sprintf("departure:%s:%s:%d", eventToken(userID, disc), zone.ID, ts),
+		EventType:  "departure",
+		Tier:       "bulletin",
+		Subject:    name,
+		Zone:       zone.Display,
+		Level:      level,
+		Outcome:    "departed",
+		OccurredAt: ts,
+	}, userID, "")
+}
+
 func emitZoneClearNews(userID id.UserID, exp *Expedition) {
 	if !peteclient.Enabled() || !newsEmissionOn() {
 		return

internal/plugin/pete_roster.go

@@ -0,0 +1,156 @@
+package plugin
+
+import (
+	"context"
+	"log/slog"
+	"time"
+
+	"gogobee/internal/db"
+	"gogobee/internal/peteclient"
+
+	"maunium.net/go/mautrix/id"
+)
+
+// The live adventurer board pushed to Pete (gogobee_boredom_plan.md's sibling —
+// see the roster section of the Pete plan).
+//
+// Everything else we send Pete is an accomplishment: a death, a clear, a
+// milestone. Those are clippings — they read as archive the moment they land, no
+// matter how fast we deliver them. The board is the other kind of thing: state
+// that is *currently true*, which is the only thing that can make a page feel
+// alive. So it is a snapshot, pushed whole, replacing whatever Pete had.
+//
+// It is also, by design, a target list. The plan is to let people who aren't
+// even playing hire assassins and mobs against adventurers who are out in the
+// world right now — so the board carries a stable per-player token and real zone
+// depth, not just a pretty display string, and it shows the zone *live* while
+// they're still in it.
+const (
+	// rosterTickInterval — how often we push. Pete's staleness window is several
+	// times this, so a missed push or two is invisible; a real outage isn't.
+	rosterTickInterval = 2 * time.Minute
+
+	// rosterPushTimeout — the push is dropped on failure, never retried (a stale
+	// snapshot is a lie, and the next tick carries the truth), so it must not be
+	// able to pile up.
+	rosterPushTimeout = 15 * time.Second
+)
+
+// peteRosterTicker pushes the board to Pete forever.
+func (p *AdventurePlugin) peteRosterTicker() {
+	if !peteclient.Enabled() {
+		return
+	}
+	ticker := time.NewTicker(rosterTickInterval)
+	defer ticker.Stop()
+	for range ticker.C {
+		if !newsEmissionOn() {
+			continue // master switch off: the board goes stale on Pete and says so
+		}
+		p.pushRoster()
+	}
+}
+
+func (p *AdventurePlugin) pushRoster() {
+	snap, err := buildRosterSnapshot(time.Now().UTC())
+	if err != nil {
+		slog.Error("roster: build snapshot failed", "err", err)
+		return
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), rosterPushTimeout)
+	defer cancel()
+	if err := peteclient.PushRoster(ctx, snap); err != nil {
+		// Not an error worth shouting about: the next tick retries by simply
+		// being a fresher snapshot, and if we stay down Pete's board correctly
+		// stops claiming to be live.
+		slog.Warn("roster: push failed, dropping snapshot", "err", err)
+	}
+}
+
+// buildRosterSnapshot assembles the complete board.
+//
+// Complete is the contract: Pete *replaces* its board with this, so anyone we
+// omit drops off the public page. That is exactly how the opt-out is enforced —
+// an opted-out player is simply never in the payload, rather than being sent and
+// anonymized. A standing row showing class + level + zone is trivially
+// re-identifiable (there is one level-14 cleric), so "an adventurer" would have
+// been a fig leaf; absence is the only honest option.
+func buildRosterSnapshot(now time.Time) (peteclient.RosterSnapshot, error) {
+	snap := peteclient.RosterSnapshot{SnapshotAt: now.Unix()}
+
+	// Both DATETIME columns selected raw and folded in Go — NOT COALESCE()'d in
+	// SQL. modernc.org/sqlite rebuilds a time.Time from the column's *declared*
+	// type, and COALESCE() erases that affinity: the value comes back a string
+	// and the Scan fails. Same trap playerIsIdle documents.
+	rows, err := db.Get().Query(`
+		SELECT user_id, last_player_action_at, created_at
+		  FROM player_meta
+		 WHERE alive = 1`)
+	if err != nil {
+		return snap, err
+	}
+	defer rows.Close()
+
+	type player struct {
+		uid        id.UserID
+		lastAction *time.Time
+	}
+	var players []player
+	for rows.Next() {
+		var uid string
+		var lastAction, created *time.Time
+		if err := rows.Scan(&uid, &lastAction, &created); err != nil {
+			return snap, err
+		}
+		if lastAction == nil {
+			lastAction = created
+		}
+		players = append(players, player{id.UserID(uid), lastAction})
+	}
+	if err := rows.Err(); err != nil {
+		return snap, err
+	}
+
+	for _, pl := range players {
+		if isNewsOptedOut(pl.uid) {
+			continue
+		}
+		c, err := LoadDnDCharacter(pl.uid)
+		if err != nil || c == nil || c.PendingSetup {
+			continue // no character to show; a half-made one has no name yet
+		}
+		name := charName(pl.uid)
+		if name == "" {
+			continue // never fall back to a Matrix handle on a public page
+		}
+
+		e := peteclient.RosterEntry{
+			// Stable per-player board token: salted, so it can't be recomputed
+			// from the handle, and distinct from every event token, so the board
+			// doesn't become the key that links a player's dispatches together.
+			Token:     eventToken(pl.uid, "roster"),
+			Name:      name,
+			Level:     c.Level,
+			ClassRace: classRaceLabel(c),
+			Status:    "idle",
+		}
+
+		if exp, _ := getActiveExpedition(pl.uid); exp != nil {
+			zone := zoneOrFallback(exp.ZoneID)
+			e.Status = "expedition"
+			e.Zone = zone.Display
+			e.Day = exp.CurrentDay
+			if IsMultiRegionZone(exp.ZoneID) {
+				if r, ok := CurrentRegion(exp); ok {
+					e.Region = r.Name
+				}
+			}
+		} else if pl.lastAction != nil {
+			if h := int(now.Sub(*pl.lastAction).Hours()); h > 0 {
+				e.IdleHours = h
+			}
+		}
+		snap.Adventurers = append(snap.Adventurers, e)
+	}
+	return snap, nil
+}

internal/plugin/pete_roster_test.go

@@ -0,0 +1,127 @@
+package plugin
+
+import (
+	"testing"
+	"time"
+
+	"gogobee/internal/db"
+
+	"maunium.net/go/mautrix/id"
+)
+
+// seedRosterPlayer puts a real, playable character on the board: a player_meta
+// row (which carries the idle clock and the display name) plus a confirmed
+// dnd_character. Real rows on purpose — the snapshot query reads two DATETIME
+// columns, and the modernc affinity trap only fires against actual stored
+// values, never against a hand-built struct.
+func seedRosterPlayer(t *testing.T, uid id.UserID, name string, created, lastAction *time.Time) {
+	t.Helper()
+	if _, err := db.Get().Exec(
+		`INSERT INTO player_meta (user_id, display_name, alive, created_at, last_player_action_at)
+		 VALUES (?, ?, 1, ?, ?)`,
+		string(uid), name, created, lastAction); err != nil {
+		t.Fatalf("seed player_meta: %v", err)
+	}
+	if err := SaveDnDCharacter(&DnDCharacter{
+		UserID: uid, Race: RaceHuman, Class: ClassFighter, Level: 5,
+		STR: 15, DEX: 14, CON: 13, INT: 12, WIS: 10, CHA: 8,
+		HPMax: 30, HPCurrent: 30, ArmorClass: 16,
+		PendingSetup: false,
+	}); err != nil {
+		t.Fatalf("seed character: %v", err)
+	}
+}
+
+// TestRosterSnapshotReadsTheClock is the scan-affinity guard. The snapshot
+// selects last_player_action_at and created_at as declared DATETIME columns and
+// folds them in Go; a COALESCE() in the SQL would erase the affinity, the Scan
+// would fail, and buildRosterSnapshot would return an error — publishing an
+// empty board (every adventurer vanishes from the public page) rather than
+// anything obviously broken.
+func TestRosterSnapshotReadsTheClock(t *testing.T) {
+	newBoredomTestDB(t)
+	now := time.Now().UTC()
+	old := now.Add(-50 * time.Hour)
+	recent := now.Add(-3 * time.Hour)
+
+	seedRosterPlayer(t, "@quiet:test", "Quack", &old, &old)
+	seedRosterPlayer(t, "@recent:test", "Josie", &old, &recent)
+	// Never acted at all: the fold falls through to created_at.
+	seedRosterPlayer(t, "@never:test", "Camcast", &old, nil)
+
+	snap, err := buildRosterSnapshot(now)
+	if err != nil {
+		t.Fatalf("buildRosterSnapshot: %v", err)
+	}
+	if len(snap.Adventurers) != 3 {
+		t.Fatalf("board has %d adventurers, want 3", len(snap.Adventurers))
+	}
+	if snap.SnapshotAt != now.Unix() {
+		t.Errorf("snapshot_at = %d, want %d", snap.SnapshotAt, now.Unix())
+	}
+
+	byName := map[string]int{}
+	for _, a := range snap.Adventurers {
+		byName[a.Name] = a.IdleHours
+		if a.Status != "idle" {
+			t.Errorf("%s status = %q, want idle (nobody is on an expedition)", a.Name, a.Status)
+		}
+		if a.Token == "" {
+			t.Errorf("%s has no board token", a.Name)
+		}
+	}
+	if got := byName["Quack"]; got != 50 {
+		t.Errorf("Quack idle hours = %d, want 50 — the clock didn't survive the scan", got)
+	}
+	if got := byName["Josie"]; got != 3 {
+		t.Errorf("Josie idle hours = %d, want 3", got)
+	}
+	if got := byName["Camcast"]; got != 50 {
+		t.Errorf("Camcast idle hours = %d, want 50 (fell through to created_at)", got)
+	}
+}
+
+// TestRosterOmitsOptedOut is the privacy contract. Pete *replaces* its whole
+// board with this payload, so omission is what enforces the opt-out. Anonymizing
+// instead would be a fig leaf: a standing row with class + level + zone names the
+// player anyway.
+func TestRosterOmitsOptedOut(t *testing.T) {
+	newBoredomTestDB(t)
+	now := time.Now().UTC()
+	old := now.Add(-30 * time.Hour)
+
+	seedRosterPlayer(t, "@shown:test", "Josie", &old, &old)
+	seedRosterPlayer(t, "@hidden:test", "Quack", &old, &old)
+	setNewsOptout("@hidden:test", true)
+
+	snap, err := buildRosterSnapshot(now)
+	if err != nil {
+		t.Fatalf("buildRosterSnapshot: %v", err)
+	}
+	if len(snap.Adventurers) != 1 {
+		t.Fatalf("board has %d adventurers, want 1", len(snap.Adventurers))
+	}
+	if snap.Adventurers[0].Name != "Quack" && snap.Adventurers[0].Name != "Josie" {
+		t.Fatalf("unexpected adventurer %q", snap.Adventurers[0].Name)
+	}
+	if snap.Adventurers[0].Name == "Quack" {
+		t.Error("an opted-out player is on the public board")
+	}
+}
+
+// TestRosterTokenIsNotAnEventToken: the board token must not be one of the
+// player's event tokens, or a standing row would become the key that links all
+// their dispatches back together — the exact unlinkability eventToken exists to
+// provide.
+func TestRosterTokenIsNotAnEventToken(t *testing.T) {
+	newBoredomTestDB(t)
+	uid := id.UserID("@josie:test")
+
+	board := eventToken(uid, "roster")
+	if board == eventToken(uid, "arrival") || board == eventToken(uid, "death:crypt:1") {
+		t.Error("board token collides with an event token — the board would deanonymize the feed")
+	}
+	if board != eventToken(uid, "roster") {
+		t.Error("board token not stable — the row would churn identity every snapshot")
+	}
+}