Adv 2.0 D&D Phase 11 D9: !zone lore subcommand

Wires the existing GMLore narration pool (zone-specific LoreLines* +
generic LoreLines fallback, all prewritten) into a !zone lore command.
Deterministic per (run, room) — re-asking in the same room yields the
same line; cross-room calls vary. No mood or state side-effects.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

internal/plugin/dnd_zone_cmd.go

@@ -60,6 +60,8 @@ func (p *AdventurePlugin) handleDnDZoneCmd(ctx MessageContext, args string) erro
 		return p.zoneCmdTaunt(ctx)
 	case "compliment":
 		return p.zoneCmdCompliment(ctx)
+	case "lore", "history":
+		return p.zoneCmdLore(ctx)
 	default:
 		return p.SendDM(ctx.Sender, zoneHelpText())
 	}
@@ -75,7 +77,8 @@ func zoneHelpText() string {
 	b.WriteString("`!zone advance` — resolve the current room and move on\n")
 	b.WriteString("`!zone abandon` — end the active run (no rewards)\n")
 	b.WriteString("`!zone taunt` — poke TwinBee (mood −10)\n")
-	b.WriteString("`!zone compliment` — flatter TwinBee (mood +5)")
+	b.WriteString("`!zone compliment` — flatter TwinBee (mood +5)\n")
+	b.WriteString("`!zone lore` — TwinBee shares zone history")
 	return b.String()
 }
 
@@ -541,6 +544,30 @@ func (p *AdventurePlugin) zoneMoodInteraction(
 	return p.SendDM(ctx.Sender, b.String())
 }
 
+// ── lore ────────────────────────────────────────────────────────────────────
+
+// zoneCmdLore renders a deterministic TwinBee lore line for the active
+// run's current room. Pulls from the zone-specific LoreLines* pool when
+// one exists (Tier 1–5 ship dedicated lore), falls back to the generic
+// LoreLines pool otherwise. roomIdx is folded into the selector so
+// repeated `!zone lore` in the same room returns the same prose, but
+// cross-room calls vary.
+func (p *AdventurePlugin) zoneCmdLore(ctx MessageContext) error {
+	run, err := getActiveZoneRun(ctx.Sender)
+	if err != nil {
+		return p.SendDM(ctx.Sender, "Couldn't read run state: "+err.Error())
+	}
+	if run == nil {
+		return p.SendDM(ctx.Sender, "No active zone run. Use `!zone enter <id>`.")
+	}
+	zone, _ := getZone(run.ZoneID)
+	line := twinBeeLine(zone.ID, GMLore, run.RunID, run.CurrentRoom)
+	if line == "" {
+		return p.SendDM(ctx.Sender, "TwinBee has nothing to say about this place.")
+	}
+	return p.SendDM(ctx.Sender, fmt.Sprintf("📖 **%s — Lore**\n\n%s", zone.Display, line))
+}
+
 // ── abandon ─────────────────────────────────────────────────────────────────
 
 func (p *AdventurePlugin) zoneCmdAbandon(ctx MessageContext) error {

internal/plugin/dnd_zone_cmd_test.go

@@ -318,6 +318,47 @@ func TestZoneCmd_TauntWithoutRunNoCrash(t *testing.T) {
 	}
 }
 
+// Phase 11 D9 — !zone lore.
+
+func TestZoneCmd_LoreWithoutRunNoCrash(t *testing.T) {
+	setupAuditTestDB(t)
+	uid := id.UserID("@zone-cmd-lore-norun:example")
+	zoneCmdTestCharacter(t, uid, 1)
+	defer cleanupZoneRuns(uid)
+	p := &AdventurePlugin{}
+	if err := p.handleDnDZoneCmd(MessageContext{Sender: uid}, "lore"); err != nil {
+		t.Fatalf("lore no-run: %v", err)
+	}
+}
+
+func TestZoneCmd_LoreWithActiveRunNoSideEffects(t *testing.T) {
+	setupAuditTestDB(t)
+	uid := id.UserID("@zone-cmd-lore-run:example")
+	zoneCmdTestCharacter(t, uid, 1)
+	defer cleanupZoneRuns(uid)
+	p := &AdventurePlugin{}
+	if err := p.handleDnDZoneCmd(MessageContext{Sender: uid}, "enter goblin_warrens"); err != nil {
+		t.Fatalf("enter: %v", err)
+	}
+	before, err := getActiveZoneRun(uid)
+	if err != nil || before == nil {
+		t.Fatalf("active run after enter: %v", err)
+	}
+	if err := p.handleDnDZoneCmd(MessageContext{Sender: uid}, "lore"); err != nil {
+		t.Fatalf("lore: %v", err)
+	}
+	after, err := getActiveZoneRun(uid)
+	if err != nil || after == nil {
+		t.Fatalf("active run after lore: %v", err)
+	}
+	if after.GMMood != before.GMMood {
+		t.Errorf("lore should not move mood: before %d, after %d", before.GMMood, after.GMMood)
+	}
+	if after.CurrentRoom != before.CurrentRoom {
+		t.Errorf("lore should not advance room: before %d, after %d", before.CurrentRoom, after.CurrentRoom)
+	}
+}
+
 func TestTauntComplimentResponseLines_Deterministic(t *testing.T) {
 	const runID = "run-d7-test"
 	t1 := tauntResponseLine(runID, 0)