Headless real-character sim + new-feature exercise harness

Run the actual Adventure module against a copy of the prod DB with no
Matrix client, to smoke-test before deploy.

- expedition-sim: -real-user @mxid runs an EXISTING character loaded from
  -data's gogobee.db instead of a synthetic build. SimRunner gains
  PrepareRealCharacter (heals to full + tops up bankroll; keeps real
  race/class/subclass/level/gear/spells).
- plugin.SendReply now honors the MessageSink like SendMessage/SendDM.
  Reply-based handlers (duels, !town, !rivals, !achievements) previously
  bypassed the capture seam and hit a nil client under the sink. Prod
  behavior is unchanged (sink is nil in production).
- exercise_prod_test.go (build tag: prodexercise) drives every N-series
  feature — world boss, duels, Shadow, Renown, achievements, journal,
  town registries, vault, gifting — against a prod DB copy with all
  outbound messages captured. Gated on GOGOBEE_PROD_DB_DIR; never runs in
  normal CI.

Claude-Session: https://claude.ai/code/session_017mEwUmmS7aQTP2NQXj6rUa

internal/plugin/exercise_prod_test.go

@@ -0,0 +1,290 @@
+//go:build prodexercise
+
+package plugin
+
+// Headless smoke-exercise of the N-series features (parties aside — those have
+// their own sim path) against a COPY of the prod DB. Nothing here touches the
+// live prod file: point GOGOBEE_PROD_DB_DIR at a directory holding a *copy* of
+// gogobee.db (+ optional -wal/-shm) and the test re-copies that into t.TempDir()
+// before opening it, so even the copy is left pristine.
+//
+//	GOGOBEE_PROD_DB_DIR=/path/to/dbcopy \
+//	    go test -tags prodexercise -run TestExerciseNewFeaturesProd -v ./internal/plugin/
+//
+// Every outbound DM / room message a handler would have sent to Matrix is
+// captured via the existing MessageSink seam and dumped with t.Log, so the run
+// shows exactly what a player would see. Each feature is wrapped so a panic or
+// error in one is reported and the battery continues.
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"testing"
+
+	"gogobee/internal/db"
+
+	"maunium.net/go/mautrix/id"
+)
+
+func TestExerciseNewFeaturesProd(t *testing.T) {
+	srcDir := os.Getenv("GOGOBEE_PROD_DB_DIR")
+	if srcDir == "" {
+		t.Skip("set GOGOBEE_PROD_DB_DIR to a dir holding a COPY of gogobee.db")
+	}
+	if _, err := os.Stat(filepath.Join(srcDir, "gogobee.db")); err != nil {
+		t.Skipf("no gogobee.db in %s", srcDir)
+	}
+
+	tmp := t.TempDir()
+	for _, f := range []string{"gogobee.db", "gogobee.db-wal", "gogobee.db-shm"} {
+		copyIfPresent(t, filepath.Join(srcDir, f), filepath.Join(tmp, f))
+	}
+
+	db.Close()
+	if err := db.Init(tmp); err != nil {
+		t.Fatalf("db.Init: %v", err)
+	}
+	t.Cleanup(db.Close)
+
+	// Reproducibility: the weekly Omen keys off wall-clock time.Now(); pin it off
+	// so the same DB copy exercises identically regardless of which week we run.
+	simOmenDisabled = true
+	simAutoArmEnabled = true
+
+	euro := NewEuroPlugin(nil)
+	xp := NewXPPlugin(nil)
+	p := NewAdventurePlugin(nil, euro, xp)
+	sink := &captureSink{}
+	p.Sink = sink
+	mark := 0
+	drain := func() {
+		for _, m := range sink.msgs[mark:] {
+			who := string(m.ToUser)
+			if who == "" {
+				who = "room:" + string(m.ToRoom)
+			}
+			t.Logf("      → [%s]\n%s", who, indent(m.Text))
+		}
+		mark = len(sink.msgs)
+	}
+	exercise := func(name string, fn func()) {
+		defer func() {
+			if r := recover(); r != nil {
+				t.Logf("  !! %s PANICKED: %v", name, r)
+				mark = len(sink.msgs)
+			}
+		}()
+		t.Logf("──────── %s ────────", name)
+		fn()
+		drain()
+	}
+
+	chars := runnableChars(t)
+	if len(chars) == 0 {
+		t.Fatal("no runnable characters (dnd_character with class + adventure_characters row) in the DB copy")
+	}
+	t.Logf("runnable characters: %d", len(chars))
+	for _, c := range chars {
+		healToFull(t, c.uid)
+		euro.Credit(c.uid, 5000, "exercise bankroll")
+		t.Logf("  • %-28s %s L%d", c.uid, c.class, c.level)
+	}
+	ctxFor := func(uid id.UserID, body string) MessageContext {
+		return MessageContext{Sender: uid, RoomID: id.RoomID("!exercise:sim"), EventID: "$ex", Body: body}
+	}
+
+	// ── N7/B2 Renown & prestige ─────────────────────────────────────────────
+	exercise("N7/B2 Renown — standing + prestige announce", func() {
+		for _, c := range chars {
+			xp, _ := loadRenownXP(c.uid)
+			lvl := renownLevelForUser(c.uid)
+			t.Logf("    %s: renownXP=%d renownLevel=%d rank=%q", c.uid, xp, lvl, renownRankFor(lvl))
+		}
+		// Push the first character up a renown level to fire the announce path.
+		c0 := chars[0]
+		before, after, err := addRenownXP(c0.uid, 500)
+		if err != nil {
+			t.Logf("    addRenownXP: %v", err)
+			return
+		}
+		t.Logf("    %s renownXP %d→%d", c0.uid, before, after)
+		p.announceRenown(c0.uid, renownLevelFor(before), renownLevelFor(after))
+	})
+
+	// ── N6/C3 World Boss / Siege raid ───────────────────────────────────────
+	exercise("N6/C3 World Boss — spawn, status, each fighter's bout", func() {
+		boss, err := p.spawnWorldBoss("exercise-siege")
+		if err != nil {
+			t.Logf("    spawnWorldBoss: %v", err)
+		}
+		if boss != nil {
+			t.Logf("    spawned %q tier=%d hp=%d", boss.Name, boss.Tier, boss.HPMax)
+		}
+		p.handleWorldBossCmd(ctxFor(chars[0].uid, ""), "status")
+		for _, c := range chars {
+			t.Logf("    -- %s takes a bout --", c.uid)
+			p.handleWorldBossCmd(ctxFor(c.uid, ""), "fight")
+		}
+		t.Logf("    -- pool after the raid --")
+		p.handleWorldBossCmd(ctxFor(chars[0].uid, ""), "status")
+	})
+
+	// ── N6/C2 Duel (needs two eligible players) ─────────────────────────────
+	exercise("N6/C2 Duel — challenge, accept, resolve", func() {
+		if len(chars) < 2 {
+			t.Log("    need 2 characters for a duel; skipping")
+			return
+		}
+		a, b := chars[0], chars[1]
+		p.handleDuelCmd(ctxFor(a.uid, ""), fmt.Sprintf("%s 100", b.uid))
+		p.handleDuelCmd(ctxFor(b.uid, ""), "accept")
+	})
+
+	// ── N6/D3 The Shadow ────────────────────────────────────────────────────
+	exercise("N6/D3 Shadow — standing vs the rival", func() {
+		for _, c := range chars {
+			p.handleShadowCmd(ctxFor(c.uid, ""))
+		}
+	})
+
+	// ── N5/D1a Campaign journal ─────────────────────────────────────────────
+	exercise("N5/D1a Journal — collected campaign pages", func() {
+		for _, c := range chars {
+			p.handleJournalCmd(ctxFor(c.uid, ""))
+		}
+	})
+
+	// ── N4/E3 Town registries ───────────────────────────────────────────────
+	exercise("N4/E3 Town — !town / !graveyard / !rivals", func() {
+		p.handleTownCmd(ctxFor(chars[0].uid, ""))
+		p.handleGraveyardCmd(ctxFor(chars[0].uid, ""))
+		p.handleRivalsCmd(ctxFor(chars[0].uid, ""))
+		p.handleRivalsTopCmd(ctxFor(chars[0].uid, ""), "")
+	})
+
+	// ── N4/E1 Estate vault ──────────────────────────────────────────────────
+	exercise("N4/E1 Vault — list (gated on T4 estate)", func() {
+		for _, c := range chars {
+			p.handleVaultCmd(ctxFor(c.uid, ""), "")
+		}
+	})
+
+	// ── N4/E2 Item gifting ──────────────────────────────────────────────────
+	exercise("N4/E2 Gifting — !give <item> @user", func() {
+		if len(chars) < 2 {
+			t.Log("    need 2 characters to gift; skipping")
+			return
+		}
+		giver, receiver := chars[0], chars[1]
+		item := firstInventoryItem(giver.uid)
+		if item == "" {
+			t.Logf("    %s has no inventory items to gift", giver.uid)
+			return
+		}
+		body := fmt.Sprintf("!give %s %s", item, receiver.uid)
+		t.Logf("    %s gifts %q to %s", giver.uid, item, receiver.uid)
+		p.handleGiveCmd(ctxFor(giver.uid, body))
+	})
+
+	// ── N7/B4 Achievements wing (best-effort; needs a registry) ─────────────
+	exercise("N7/B4 Achievements — !achievements", func() {
+		ach := NewAchievementsPlugin(nil, nil)
+		ach.Sink = sink
+		p.SetAchievements(ach)
+		for _, c := range chars {
+			ach.handleAchievements(ctxFor(c.uid, ""))
+		}
+	})
+}
+
+// ---- helpers ---------------------------------------------------------------
+
+type exChar struct {
+	uid   id.UserID
+	class string
+	level int
+}
+
+// runnableChars lists characters that have both a completed dnd_character (class
+// set) and the legacy adventure_characters row the expedition/feature paths load.
+func runnableChars(t *testing.T) []exChar {
+	t.Helper()
+	d := db.Get()
+	rows, err := d.Query(`
+		SELECT d.user_id, d.class, d.dnd_level
+		FROM dnd_character d
+		JOIN adventure_characters a ON a.user_id = d.user_id
+		WHERE d.class != ''`)
+	if err != nil {
+		t.Fatalf("query chars: %v", err)
+	}
+	defer rows.Close()
+	var out []exChar
+	for rows.Next() {
+		var c exChar
+		var uid string
+		if err := rows.Scan(&uid, &c.class, &c.level); err != nil {
+			t.Fatal(err)
+		}
+		c.uid = id.UserID(uid)
+		out = append(out, c)
+	}
+	sort.Slice(out, func(i, j int) bool { return out[i].level > out[j].level })
+	return out
+}
+
+func healToFull(t *testing.T, uid id.UserID) {
+	t.Helper()
+	c, err := LoadDnDCharacter(uid)
+	if err != nil || c == nil {
+		t.Logf("    healToFull: load %s: %v", uid, err)
+		return
+	}
+	c.HPCurrent = c.HPMax
+	c.TempHP = 0
+	c.Exhaustion = 0
+	c.ShortRestCharges = c.Level
+	if err := SaveDnDCharacter(c); err != nil {
+		t.Logf("    healToFull: save %s: %v", uid, err)
+	}
+}
+
+func firstInventoryItem(uid id.UserID) string {
+	d := db.Get()
+	var name string
+	// adventure_inventory holds the player's consumables/misc, one row per item.
+	_ = d.QueryRow(
+		`SELECT name FROM adventure_inventory WHERE user_id=? LIMIT 1`,
+		string(uid),
+	).Scan(&name)
+	return name
+}
+
+func copyIfPresent(t *testing.T, src, dst string) {
+	t.Helper()
+	in, err := os.Open(src)
+	if err != nil {
+		return // wal/shm may be absent — fine
+	}
+	defer in.Close()
+	out, err := os.Create(dst)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer out.Close()
+	if _, err := io.Copy(out, in); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func indent(s string) string {
+	lines := strings.Split(strings.TrimRight(s, "\n"), "\n")
+	for i, l := range lines {
+		lines[i] = "        " + l
+	}
+	return strings.Join(lines, "\n")
+}

internal/plugin/expedition_sim.go

@@ -131,6 +131,38 @@ func (s *SimRunner) BuildCharacter(uid id.UserID, class DnDClass, level int) (*D
 	return c, nil
 }
 
+// PrepareRealCharacter readies an already-persisted character (loaded from a
+// copy of the prod DB) for a headless run. Unlike BuildCharacter it fabricates
+// nothing: the character keeps its real race/class/subclass/level, ability
+// scores, equipment, spellbook and inventory. It only (a) heals to full — a
+// player rests before heading out, so we don't handicap a wounded prod snapshot
+// — and (b) tops the bankroll up to `bank` so the "heavy" supply preset always
+// affords itself regardless of the player's live coin balance. Returns the
+// loaded character. The DB copy is disposable; the live prod file is untouched.
+func (s *SimRunner) PrepareRealCharacter(uid id.UserID, bank float64) (*DnDCharacter, error) {
+	c, err := LoadDnDCharacter(uid)
+	if err != nil {
+		return nil, fmt.Errorf("LoadDnDCharacter: %w", err)
+	}
+	if c == nil {
+		return nil, fmt.Errorf("no character for %s in db copy", uid)
+	}
+	if c.Class == "" {
+		return nil, fmt.Errorf("%s has no class (setup incomplete) — nothing to simulate", uid)
+	}
+	c.HPCurrent = c.HPMax
+	c.TempHP = 0
+	c.Exhaustion = 0
+	c.ShortRestCharges = c.Level
+	if err := SaveDnDCharacter(c); err != nil {
+		return nil, fmt.Errorf("SaveDnDCharacter: %w", err)
+	}
+	if bal := s.Euro.GetBalance(uid); bal < bank {
+		s.Euro.Credit(uid, bank-bal, "expedition-sim real-char bankroll top-up")
+	}
+	return c, nil
+}
+
 // stockSimConsumables drops a small tier-appropriate bundle of potions
 // + a couple offensive items into the synthetic player's inventory so
 // SelectConsumables / setupAutoHealFromInventory have something to fire

internal/plugin/plugin.go

@@ -638,6 +638,14 @@ func (b *Base) SendNotice(roomID id.RoomID, text string) error {
 
 // SendReply sends a reply to a specific event.
 func (b *Base) SendReply(roomID id.RoomID, eventID id.EventID, text string) error {
+	// The sink is the headless capture seam: a reply is an outbound room
+	// message, so — like SendMessage/SendDM — it diverts here when installed and
+	// the live client is never touched. Without this branch, reply-only handlers
+	// (duels, !town, !rivals, !achievements) hit a nil client under the sink.
+	if b != nil && b.Sink != nil {
+		_, err := b.Sink.Capture(outboundMessage{ToRoom: roomID, Text: text})
+		return err
+	}
 	content := textContent(text)
 	if eventID != "" {
 		content.RelatesTo = &event.RelatesTo{