Merge branch 'automatons'

.gitignore

@@ -5,3 +5,4 @@ dist/
 .DS_Store
 data/
 .claude/
+.playwright-mcp/

packages/engine/src/automaton.ts

@@ -0,0 +1,663 @@
+// The automaton: a clockwork wizard. It plays from its own redacted view —
+// the same information a human seat receives — and returns one command per
+// consultation; the server keeps consulting until the maze stops asking.
+// It never throws: when in doubt it passes, discards, or ends its turn.
+//
+// Temperaments color its judgment: the HUNTER marches for treasure, the
+// BERSERKER for blood, the WORRIER for the shadows between the two.
+
+import { cardDef, type CardInstance } from "./cards";
+import { cellKey, edgeKey, stepTarget, SIDES, type Cell, type Side } from "./board";
+import { sightedCellsFor, type GameView } from "./view";
+import type { AmbushTrigger, Command, PlayerId } from "./game";
+
+export type AutomatonStyle = "hunter" | "berserker" | "worrier";
+export const AUTOMATON_STYLES: AutomatonStyle[] = ["hunter", "berserker", "worrier"];
+
+/**
+ * Difficulty degrades resources and repertoire, never judgment. The
+ * apprentice draws one card a turn and knows a modest spellbook; the adept
+ * draws two but keeps no ambushes or amplifies; the archmage knows all.
+ * Every tier plays its cards correctly — none of them is ever stupid.
+ */
+export type AutomatonTier = "apprentice" | "adept" | "archmage";
+export const AUTOMATON_TIERS: AutomatonTier[] = ["apprentice", "adept", "archmage"];
+
+interface TierTraits {
+  draw: number;
+  /** Added to every counteraction threshold: thrift, not blindness. */
+  counterThrift: number;
+  afflictions: boolean;
+  amplify: boolean;
+  ambush: boolean;
+  guardGold: boolean;
+  buffs: boolean;
+  dejaVu: boolean;
+}
+const TIERS: Record<AutomatonTier, TierTraits> = {
+  apprentice: { draw: 1, counterThrift: 2, afflictions: false, amplify: false, ambush: false, guardGold: false, buffs: false, dejaVu: false },
+  adept:      { draw: 2, counterThrift: 0, afflictions: true,  amplify: false, ambush: false, guardGold: true,  buffs: true,  dejaVu: true },
+  archmage:   { draw: 2, counterThrift: 0, afflictions: true,  amplify: true,  ambush: true,  guardGold: true,  buffs: true,  dejaVu: true },
+};
+
+/** Damage attacks the clockwork understands: flat damage plus per-number scaling. */
+const ATTACKS: Record<string, { base: number; perNumber: boolean; needsNumber?: boolean; sameSquare?: boolean }> = {
+  fireball: { base: 5, perNumber: false },
+  "sudden-death": { base: 10, perNumber: false },
+  powerthrust: { base: 2, perNumber: true },
+  waterbolt: { base: 0, perNumber: true, needsNumber: true },
+  "lightning-blast": { base: 0, perNumber: true, needsNumber: true },
+  wizardblade: { base: 0, perNumber: true, needsNumber: true },
+  "power-drain": { base: 0, perNumber: true, needsNumber: true },
+  dagger: { base: 3, perNumber: false },
+  "large-rock": { base: 2, perNumber: false },
+  "blaster-wand": { base: 3, perNumber: false },
+  disease: { base: 3, perNumber: false, sameSquare: true },
+};
+
+/**
+ * Afflictions cast at an enemy: no damage, but a turn of misery. Cast with a
+ * number for the duration where one helps.
+ */
+const AFFLICTIONS: Record<string, { withNumber: boolean; vsCarrier?: boolean }> = {
+  blind: { withNumber: true },
+  slow: { withNumber: true },
+  "no-spell": { withNumber: true },
+  medusa: { withNumber: true },
+  "lock-in-place": { withNumber: true },
+  "walking-dead": { withNumber: false },
+  "slow-death": { withNumber: false },
+  idiot: { withNumber: false },
+  weakness: { withNumber: false, vsCarrier: true },
+  "go-away": { withNumber: true },
+  "thought-steal": { withNumber: false },
+};
+
+/** Every stone earns its place on the table the moment it is drawn. */
+const STONES = new Set([
+  "bloodstone", "brainstone", "powerstone", "shadowstone",
+  "shieldstone", "soulstone", "speedstone", "visionstone",
+]);
+
+const SUMMONS = new Set(["troll", "skeleton", "wraith", "fire-imp", "shadow", "democratic-monster"]);
+const UNLOCKS = ["master-key", "pick-lock", "remove-lock"];
+
+function me(view: GameView) {
+  return view.players.find((p) => p.id === view.you)!;
+}
+
+function livingEnemies(view: GameView) {
+  return view.players.filter((p) => p.alive && p.id !== view.you);
+}
+
+function inHand(view: GameView, cardId: string): CardInstance | undefined {
+  return view.yourHand.find((c) => c.cardId === cardId);
+}
+
+function numbersInHand(view: GameView): CardInstance[] {
+  return view.yourHand
+    .filter((c) => cardDef(c.cardId).cardType === "number")
+    .sort((a, b) => (cardDef(a.cardId).value ?? 0) - (cardDef(b.cardId).value ?? 0));
+}
+
+/** Cards the automaton happily discards to churn its hand, worst first. */
+function discardValue(c: CardInstance): number {
+  const def = cardDef(c.cardId);
+  if (def.cardType === "counteraction" || def.cardType === "neutral/counteraction") return 9;
+  if (SUMMONS.has(c.cardId) || UNLOCKS.includes(c.cardId) || STONES.has(c.cardId)) return 8;
+  if (ATTACKS[c.cardId] != null || AFFLICTIONS[c.cardId] != null) return 7;
+  if (c.cardId === "speed" || c.cardId === "interrupt" || c.cardId === "opportunity-fire" ||
+      c.cardId === "ward" || c.cardId === "drop-object" || c.cardId === "gift-from-above" ||
+      c.cardId === "deja-vu" || c.cardId === "amplify" || c.cardId === "safe" ||
+      c.cardId === "glue") return 6;
+  if (def.cardType === "number") return 4 + (def.value ?? 0);
+  if (def.cardType === "attack") return 3;
+  return 2; // situational neutrals go first
+}
+
+interface PathResult {
+  dir: Side;
+  distance: number;
+  /** A locked door stands on the first step of this path. */
+  doorAhead?: { cell: Cell; side: Side };
+}
+
+/**
+ * BFS over walkable steps toward the nearest goal. Doors count as passable
+ * when the clockwork can unlock them; the first such door is reported so the
+ * key gets used before the boot.
+ */
+function pathToward(
+  view: GameView,
+  from: Cell,
+  goals: Set<string>,
+  opts: { avoidNearEnemies?: boolean; canUnlock?: boolean } = {},
+): PathResult | null {
+  if (goals.size === 0 || goals.has(cellKey(from))) return null;
+  const enemyCells = livingEnemies(view).map((p) => p.position);
+  const nearEnemy = (c: Cell) =>
+    enemyCells.some((e) => Math.abs(e.x - c.x) + Math.abs(e.y - c.y) <= 2);
+  const cameBy = new Map<string, { prev: string; dir: Side; viaDoor: boolean }>();
+  const seen = new Set<string>([cellKey(from)]);
+  let frontier: Cell[] = [from];
+  let found: string | null = null;
+  let depth = 0;
+  for (; depth < 60 && frontier.length > 0 && !found; depth++) {
+    const next: Cell[] = [];
+    for (const c of frontier) {
+      for (const dir of SIDES) {
+        const t = stepTarget(view.board, c, dir);
+        let to: Cell;
+        let viaDoor = false;
+        if (t.kind === "blocked") {
+          if (t.by !== "door") continue;
+          const k = edgeKey(c, dir);
+          const alreadyOpen =
+            view.openDoorEdges.includes(k) || view.doorStates[k] === "removed";
+          if (!alreadyOpen && !opts.canUnlock) continue;
+          const n = { x: c.x + (dir === "E" ? 1 : dir === "W" ? -1 : 0),
+                      y: c.y + (dir === "S" ? 1 : dir === "N" ? -1 : 0) };
+          if (!view.board.cells[cellKey(n)]) continue;
+          to = n;
+          viaDoor = !alreadyOpen;
+        } else {
+          to = t.to;
+        }
+        const k = cellKey(to);
+        if (seen.has(k)) continue;
+        if (view.squareContents[k]?.kind === "stone") continue;
+        seen.add(k);
+        cameBy.set(k, { prev: cellKey(c), dir, viaDoor });
+        if (goals.has(k)) { found = k; break; }
+        const hazard = view.squareContents[k]?.kind;
+        if (hazard === "pit" || hazard === "ooze" || hazard === "thornbush" ||
+            hazard === "rosebush" || hazard === "slime") continue;
+        if (opts.avoidNearEnemies && nearEnemy(to)) continue;
+        next.push(to);
+      }
+      if (found) break;
+    }
+    frontier = next;
+  }
+  if (!found) return null;
+  let cursor = found;
+  for (;;) {
+    const hop = cameBy.get(cursor)!;
+    if (hop.prev === cellKey(from)) {
+      return {
+        dir: hop.dir,
+        distance: depth,
+        ...(hop.viaDoor ? { doorAhead: { cell: from, side: hop.dir } } : {}),
+      };
+    }
+    cursor = hop.prev;
+  }
+}
+
+/** The treasure squares worth marching for. */
+function treasureGoals(view: GameView): Set<string> {
+  const self = me(view);
+  const goals = new Set<string>();
+  if (self.carriedTreasureId) {
+    goals.add(cellKey(self.home));
+    return goals;
+  }
+  for (const t of view.treasures) {
+    if (!t.position || t.carriedBy) continue;
+    if (t.owner === view.you) continue;
+    if (cellKey(t.position) === cellKey(self.home)) continue;
+    goals.add(cellKey(t.position));
+  }
+  return goals;
+}
+
+/** The wizard making off with MY gold, if any. */
+function thiefOfMine(view: GameView) {
+  const carriers = new Set(
+    view.treasures.filter((t) => t.owner === view.you && t.carriedBy && t.carriedBy !== view.you)
+      .map((t) => t.carriedBy!),
+  );
+  return livingEnemies(view).find((p) => carriers.has(p.id)) ?? null;
+}
+
+function overLimit(view: GameView): number {
+  return Math.max(0, view.yourHand.length - 7);
+}
+
+function worstCards(view: GameView, n: number): string[] {
+  return [...view.yourHand]
+    .sort((a, b) => discardValue(a) - discardValue(b))
+    .slice(0, n)
+    .map((c) => c.instanceId);
+}
+
+/** A square up to four spaces away that maximizes distance from enemies. */
+function escapeCell(view: GameView, from: Cell): Cell | null {
+  const enemies = livingEnemies(view).map((p) => p.position);
+  let best: { cell: Cell; score: number } | null = null;
+  for (const k of Object.keys(view.board.cells)) {
+    const [x, y] = k.split(",").map(Number) as [number, number];
+    const d = Math.abs(x - from.x) + Math.abs(y - from.y);
+    if (d === 0 || d > 4) continue;
+    if (view.squareContents[k]) continue;
+    const score = Math.min(...enemies.map((e) => Math.abs(e.x - x) + Math.abs(e.y - y)), 99);
+    if (!best || score > best.score) best = { cell: { x, y }, score };
+  }
+  return best?.cell ?? null;
+}
+
+/** Counteraction judgment; the worrier flinches at less. */
+function respond(view: GameView, style: AutomatonStyle, tier: TierTraits): Command {
+  const stack = view.stack!;
+  const you = view.you;
+  const find = (id: string) => view.yourHand.find((c) => c.cardId === id);
+
+  if (stack.defenderId !== you) {
+    // Pressing the attack: ANTI-ANTI burns the counter that would stop us
+    // (the engine refuses it against escapes; the fallback pass covers that).
+    if (stack.attackerId === you) {
+      const last = [...stack.counters].reverse().find((c) => !c.nullified);
+      const anti = find("anti-anti");
+      if (anti && last && last.card.cardId !== "teleport") {
+        return { type: "counteract", instanceId: anti.instanceId };
+      }
+    }
+    return { type: "pass" };
+  }
+
+  const flinch = (style === "worrier" ? 1 : 0) - tier.counterThrift;
+  const attackId = stack.attackCard?.cardId ?? null;
+  const atk = attackId ? ATTACKS[attackId] : null;
+  const affliction = attackId ? AFFLICTIONS[attackId] != null : false;
+  const incoming = stack.attackCard
+    ? (atk ? atk.base + (atk.perNumber ? stack.numberValue ?? 1 : 0) : 2)
+    : 1;
+  if (stack.kind === "spell") {
+    // REVERSE turns the biggest blasts into a meal.
+    const reverse = find("reverse");
+    if (reverse && incoming >= 4 - flinch) return { type: "counteract", instanceId: reverse.instanceId };
+    // ABSORB SPELL steals the good ones for later.
+    const absorbSpell = find("absorb-spell");
+    if (absorbSpell && incoming >= 3) return { type: "counteract", instanceId: absorbSpell.instanceId };
+    const shield = find("full-shield");
+    if (shield && (incoming >= 3 - flinch || (affliction && style === "worrier"))) {
+      return { type: "counteract", instanceId: shield.instanceId };
+    }
+    const reflect = find("full-reflection");
+    if (reflect && incoming >= 4 - flinch) return { type: "counteract", instanceId: reflect.instanceId };
+    // A curse in flight is best refused at the door.
+    if (affliction) {
+      const cleanse = find("remove-curse");
+      if (cleanse) return { type: "counteract", instanceId: cleanse.instanceId };
+    }
+    const half = find("reflection");
+    if (half && incoming >= 3) return { type: "counteract", instanceId: half.instanceId };
+  }
+  const absorb = find("absorb");
+  if (absorb && incoming >= 2 - flinch && incoming <= 3) return { type: "counteract", instanceId: absorb.instanceId };
+  const blunt = find("blunt");
+  if (blunt && incoming >= 2 - flinch) return { type: "counteract", instanceId: blunt.instanceId };
+  // The berserker shares its pain out of spite.
+  const empathy = find("empathy");
+  if (empathy && style === "berserker" && incoming >= 2) {
+    return { type: "counteract", instanceId: empathy.instanceId };
+  }
+  // Nothing to block with: teleport clear of the big ones.
+  const tp = find("teleport");
+  if (tp && incoming >= 4 - flinch) {
+    const out = escapeCell(view, me(view).position);
+    if (out) return { type: "counteract", instanceId: tp.instanceId, params: { cell: out } };
+  }
+  // A displayed shieldstone lets numbers soak the small ones.
+  const stoneShown = me(view).displayed.some((c) => c.cardId === "shieldstone");
+  if (stoneShown && incoming >= 2) {
+    const num = numbersInHand(view)[0];
+    if (num) return { type: "counteract", instanceId: num.instanceId };
+  }
+  return { type: "pass" };
+}
+
+/** The best attack available against a visible target, numbers and amplify included. */
+function bestAttack(view: GameView, targetId: PlayerId, tier: TierTraits): Command | null {
+  const numbers = numbersInHand(view);
+  const biggest = numbers[numbers.length - 1];
+  const biggestValue = biggest ? (cardDef(biggest.cardId).value ?? 0) : 0;
+  const target = view.players.find((p) => p.id === targetId)!;
+  const together = cellKey(target.position) === cellKey(me(view).position);
+  const amplify = tier.amplify ? inHand(view, "amplify") : undefined;
+  let best: { cmd: Command; damage: number } | null = null;
+  for (const c of view.yourHand) {
+    const atk = ATTACKS[c.cardId];
+    if (!atk) continue;
+    if (atk.sameSquare && !together) continue;
+    // A wand needs its charges set by a number on first use.
+    const isWand = c.cardId === "blaster-wand";
+    const uncharged = isWand && view.wandCharges[c.instanceId] == null;
+    if ((uncharged || atk.needsNumber) && !biggest) continue;
+    const withNumber = (atk.perNumber || uncharged) && biggest;
+    let damage = atk.base + (atk.perNumber && withNumber ? biggestValue : 0);
+    if (damage <= 0) continue;
+    // AMPLIFY doubles the heavy hitters (spells only, not thrown things).
+    const amplified = amplify && damage >= 4 && !isWand &&
+      c.cardId !== "dagger" && c.cardId !== "large-rock";
+    if (amplified) damage *= 2;
+    if (!best || damage > best.damage) {
+      best = {
+        damage,
+        cmd: {
+          type: "cast", instanceId: c.instanceId,
+          target: { kind: "player", playerId: targetId },
+          ...(withNumber ? { numberInstanceIds: [biggest.instanceId] } : {}),
+          ...(amplified ? { amplifyInstanceIds: [amplify.instanceId] } : {}),
+        },
+      };
+    }
+  }
+  return best?.cmd ?? null;
+}
+
+/** An affliction worth casting when no damage lands, mid number attached. */
+function bestAffliction(view: GameView, targetId: PlayerId, isThief: boolean): Command | null {
+  const numbers = numbersInHand(view);
+  const mid = numbers[Math.floor(numbers.length / 2)];
+  for (const c of view.yourHand) {
+    const aff = AFFLICTIONS[c.cardId];
+    if (!aff) continue;
+    if (aff.vsCarrier && !isThief) continue;
+    if (aff.withNumber && !mid) continue;
+    return {
+      type: "cast", instanceId: c.instanceId,
+      target: { kind: "player", playerId: targetId },
+      ...(aff.withNumber && mid ? { numberInstanceIds: [mid.instanceId] } : {}),
+    };
+  }
+  return null;
+}
+
+/** An empty, sighted square near the target for a summoned creature. */
+function summonSpot(view: GameView, near: Cell): Cell | null {
+  const sighted = sightedCellsFor(view);
+  let best: { cell: Cell; d: number } | null = null;
+  for (const k of sighted) {
+    if (view.squareContents[k]) continue;
+    const [x, y] = k.split(",").map(Number) as [number, number];
+    if (view.creatures.some((c) => c.position.x === x && c.position.y === y)) continue;
+    if (view.board.homes.some((h) => h.x === x && h.y === y)) continue;
+    const d = Math.abs(x - near.x) + Math.abs(y - near.y);
+    if (!best || d < best.d) best = { cell: { x, y }, d };
+  }
+  return best?.cell ?? null;
+}
+
+/** Self-buffs and housekeeping worth a neutral cast this turn. */
+function selfCare(view: GameView, style: AutomatonStyle, tier: TierTraits): Command | null {
+  const self = me(view);
+  const numbers = numbersInHand(view);
+  const mid = numbers[Math.floor(numbers.length / 2)];
+
+  // Extra turns are always good turns.
+  const speed = inHand(view, "speed");
+  if (speed && view.turn.round > 1 && !view.turn.actionsEnded) {
+    return { type: "cast", instanceId: speed.instanceId };
+  }
+  // Free life is free.
+  const gift = inHand(view, "gift-from-above");
+  if (gift) return { type: "cast", instanceId: gift.instanceId };
+  // Every stone goes on the table the turn it is drawn.
+  for (const c of view.yourHand) {
+    if (STONES.has(c.cardId) && !self.displayed.some((d) => d.instanceId === c.instanceId)) {
+      return { type: "cast", instanceId: c.instanceId };
+    }
+  }
+  if (!tier.buffs) return null; // the apprentice's book ends at the stones
+  // A curse on the clockwork gets scrubbed off.
+  const cursed = view.sustained.some(
+    (e) => e.targetId === view.you && e.casterId !== view.you && AFFLICTIONS[e.cardId] != null,
+  );
+  const cleanse = inHand(view, "remove-curse");
+  if (cursed && cleanse) return { type: "cast", instanceId: cleanse.instanceId };
+  // Three or more wizards: LIFESAVER takes elimination off the table.
+  const lifesaver = inHand(view, "lifesaver");
+  if (lifesaver && view.players.length > 2) return { type: "cast", instanceId: lifesaver.instanceId };
+  // The ward guards the gold while its owner is away robbing yours.
+  if (inHand(view, "ward") && !view.yourWardArmed) {
+    return { type: "armWard", armed: true };
+  }
+  const enemyNear = livingEnemies(view).some(
+    (p) => Math.abs(p.position.x - self.position.x) + Math.abs(p.position.y - self.position.y) <= 3,
+  );
+  // The berserker grows; the worrier fades.
+  if (style === "berserker" && enemyNear && mid) {
+    const big = inHand(view, "big-man");
+    if (big) {
+      return { type: "cast", instanceId: big.instanceId, numberInstanceIds: [mid.instanceId] };
+    }
+  }
+  if (style === "worrier" && enemyNear && mid) {
+    for (const id of ["invisible", "mist-body", "shrink"]) {
+      const buff = inHand(view, id);
+      if (buff) {
+        return { type: "cast", instanceId: buff.instanceId, numberInstanceIds: [mid.instanceId] };
+      }
+    }
+    // Or slam a wall in the pursuer's face.
+    const wall = inHand(view, "create-wall");
+    if (wall) {
+      const foe = livingEnemies(view).sort((a, b) =>
+        (Math.abs(a.position.x - self.position.x) + Math.abs(a.position.y - self.position.y)) -
+        (Math.abs(b.position.x - self.position.x) + Math.abs(b.position.y - self.position.y)))[0]!;
+      const dx = foe.position.x - self.position.x;
+      const dy = foe.position.y - self.position.y;
+      const side: Side = Math.abs(dx) >= Math.abs(dy) && dx !== 0
+        ? (dx > 0 ? "E" : "W") : dy > 0 ? "S" : "N";
+      if ((view.board.edges[edgeKey(self.position, side)] ?? "open") === "open") {
+        return { type: "cast", instanceId: wall.instanceId, target: { kind: "edge", cell: self.position, side } };
+      }
+    }
+  }
+  // Guard the gold on the floor: a SAFE locks it, GLUE sticks it down.
+  const myFloorTreasure = tier.guardGold
+    ? view.treasures.find((t) => t.owner === view.you && t.position && !t.carriedBy)
+    : undefined;
+  if (myFloorTreasure && enemyNear) {
+    const safe = inHand(view, "safe");
+    if (safe) {
+      return { type: "cast", instanceId: safe.instanceId, target: { kind: "cell", cell: myFloorTreasure.position! } };
+    }
+    const glue = inHand(view, "glue");
+    const midN = numbers[Math.floor(numbers.length / 2)];
+    if (glue && midN) {
+      return {
+        type: "cast", instanceId: glue.instanceId,
+        target: { kind: "cell", cell: myFloorTreasure.position! },
+        numberInstanceIds: [midN.instanceId],
+      };
+    }
+  }
+  // Empty of violence: DEJA-VU pulls the best attack back from the pile.
+  const dv = tier.dejaVu ? inHand(view, "deja-vu") : undefined;
+  if (dv && !view.yourHand.some((c) => ATTACKS[c.cardId] != null)) {
+    const buried = [...view.discardPile].reverse().find(
+      (c) => ATTACKS[c.cardId] != null && c.cardId !== "blaster-wand" && !ATTACKS[c.cardId]!.needsNumber,
+    );
+    if (buried) {
+      return { type: "cast", instanceId: dv.instanceId, params: { cardId: buried.cardId } };
+    }
+  }
+  // An ambush costs nothing to hold and everything to walk into.
+  const via = tier.ambush ? (inHand(view, "interrupt") ?? inHand(view, "opportunity-fire")) : undefined;
+  const spell = view.yourHand.find((c) => ATTACKS[c.cardId] != null && !ATTACKS[c.cardId]!.perNumber &&
+    c.cardId !== "blaster-wand");
+  if (via && spell && view.yourAmbushes.length === 0) {
+    const trigger: AmbushTrigger = style === "worrier" ? { kind: "near" } : { kind: "treasure" };
+    return { type: "setAmbush", instanceId: via.instanceId, trigger, spellInstanceId: spell.instanceId };
+  }
+  return null;
+}
+
+/**
+ * One decision from the automaton's seat, or null when the maze is not
+ * asking it anything.
+ */
+export function automatonCommand(
+  view: GameView,
+  style: AutomatonStyle = "hunter",
+  tierName: AutomatonTier = "archmage",
+): Command | null {
+  const you = view.you as PlayerId;
+  const tier = TIERS[tierName] ?? TIERS.archmage;
+  if (view.phase !== "playing") return null;
+
+  if (view.pendingDiscard === you) {
+    return { type: "discard", instanceIds: worstCards(view, Math.max(1, overLimit(view))) };
+  }
+  if (view.chaosPending && view.chaosPending.queue[0] === you) {
+    const shield = inHand(view, "full-shield");
+    return style === "worrier" && shield
+      ? { type: "counteract", instanceId: shield.instanceId }
+      : { type: "pass" };
+  }
+  if (view.stack) {
+    return view.stack.waitingOn === you ? respond(view, style, tier) : null;
+  }
+  if (view.outOfTurnWindow?.playerId === you) return { type: "pass" };
+  if (view.activePlayerId !== you) return null;
+
+  const self = me(view);
+  const here = cellKey(self.position);
+
+  if (view.turn.actionsEnded) return { type: "endTurn", draw: tier.draw };
+
+  // Deliver or grab treasure underfoot.
+  if (self.carriedTreasureId && here === cellKey(self.home)) return { type: "dropTreasure" };
+  if (!self.carriedTreasureId) {
+    const prize = view.treasures.find(
+      (t) => t.position && !t.carriedBy && t.owner !== you && cellKey(t.position) === here &&
+             here !== cellKey(self.home),
+    );
+    if (prize) return { type: "pickUpTreasure" };
+  }
+
+  // Wounded clockwork teleports clear of visible hunters.
+  if (self.life <= 5) {
+    const sighted = sightedCellsFor(view);
+    const hunted = livingEnemies(view).some((p) => sighted.has(cellKey(p.position)));
+    const tp = inHand(view, "teleport");
+    if (hunted && tp) {
+      const out = escapeCell(view, self.position);
+      if (out) return { type: "cast", instanceId: tp.instanceId, target: { kind: "cell", cell: out } };
+    }
+  }
+
+  const care = selfCare(view, style, tier);
+  if (care) return care;
+
+  // Command the menagerie: creatures march and maul before the wizard moves.
+  for (const c of view.creatures) {
+    if (c.controllerId !== you || c.justCreated) continue;
+    const enemyHere = livingEnemies(view).find((p) => cellKey(p.position) === cellKey(c.position));
+    if (enemyHere && !c.attackUsed &&
+        (c.kind === "troll" || c.kind === "skeleton" || c.kind === "shadow")) {
+      return { type: "creatureAttack", creatureId: c.id, targetId: enemyHere.id };
+    }
+    if (c.movementUsed < c.movesPerTurn) {
+      const enemyCells = new Set(livingEnemies(view).map((p) => cellKey(p.position)));
+      const hunt = pathToward(view, c.position, enemyCells, {});
+      if (hunt && !hunt.doorAhead) return { type: "moveCreature", creatureId: c.id, direction: hunt.dir };
+    }
+  }
+
+  const thief = thiefOfMine(view);
+
+  // One attack per turn: the thief of my gold dies first, then the weakest.
+  if (!view.turn.attackUsed && view.turn.round > 1) {
+    const sighted = sightedCellsFor(view);
+    const visible = livingEnemies(view).filter((p) => sighted.has(cellKey(p.position)));
+    if (visible.length > 0) {
+      const target = thief && visible.some((p) => p.id === thief.id)
+        ? thief
+        : visible.sort((a, b) => a.life - b.life)[0]!;
+      // DROP OBJECT shakes my treasure out of the thief's hands.
+      if (thief && target.id === thief.id) {
+        const dob = inHand(view, "drop-object");
+        if (dob) {
+          return {
+            type: "cast", instanceId: dob.instanceId,
+            target: { kind: "player", playerId: thief.id }, params: { cardId: "treasure" },
+          };
+        }
+      }
+      const spell = bestAttack(view, target.id, tier);
+      if (spell) return spell;
+      const misery = tier.afflictions ? bestAffliction(view, target.id, thief?.id === target.id) : null;
+      if (misery) return misery;
+      if (cellKey(target.position) === here && style !== "worrier") {
+        return { type: "punch", targetId: target.id };
+      }
+    }
+    // No shot at a wizard: raise a creature to do the walking.
+    const summon = view.yourHand.find((c) => SUMMONS.has(c.cardId));
+    if (summon && livingEnemies(view).length > 0) {
+      const near = style === "worrier" ? self.position : livingEnemies(view)[0]!.position;
+      const spot = summonSpot(view, near);
+      if (spot) {
+        return { type: "cast", instanceId: summon.instanceId, target: { kind: "cell", cell: spot } };
+      }
+    }
+  }
+
+  // March. The thief-chase outranks everything; the berserker hunts wizards
+  // over gold; the worrier keeps its distance; the hunter goes to the gold.
+  if (view.turn.movementUsed < view.turn.movementAllowance) {
+    const gold = treasureGoals(view);
+    const enemyCells = new Set(livingEnemies(view).map((p) => cellKey(p.position)));
+    const canUnlock = UNLOCKS.some((id) => inHand(view, id));
+    const objectives = thief
+      ? new Set([cellKey(thief.position)])
+      : style === "berserker" && !self.carriedTreasureId
+        ? (enemyCells.size > 0 ? enemyCells : gold)
+        : gold;
+    const path =
+      pathToward(view, self.position, objectives, { avoidNearEnemies: style === "worrier" && !thief, canUnlock }) ??
+      pathToward(view, self.position, objectives, { canUnlock }) ??
+      pathToward(view, self.position, enemyCells, { canUnlock });
+    if (path) {
+      // A locked door on the very next step: use the key first.
+      if (path.doorAhead) {
+        for (const id of UNLOCKS) {
+          const key = inHand(view, id);
+          if (key) {
+            return {
+              type: "cast", instanceId: key.instanceId,
+              target: { kind: "edge", cell: path.doorAhead.cell, side: path.doorAhead.side },
+            };
+          }
+        }
+      } else {
+        const movesLeft = view.turn.movementAllowance - view.turn.movementUsed;
+        if (!view.turn.numberPlayedForMovement && path.distance > movesLeft) {
+          const numbers = numbersInHand(view);
+          const helper = numbers.find(
+            (n) => movesLeft + (cardDef(n.cardId).value ?? 0) >= path.distance,
+          ) ?? (path.distance > movesLeft + 2 ? numbers[numbers.length - 1] : undefined);
+          if (helper) {
+            return { type: "playNumberForMovement", instanceId: helper.instanceId };
+          }
+        }
+        return { type: "move", direction: path.dir };
+      }
+    }
+  }
+
+  return { type: "endTurn", draw: tier.draw };
+}
+
+/** The safe fallback when the automaton's choice was refused. */
+export function automatonFallback(view: GameView): Command {
+  const you = view.you as PlayerId;
+  if (view.pendingDiscard === you) {
+    return { type: "discard", instanceIds: worstCards(view, Math.max(1, overLimit(view))) };
+  }
+  if (view.stack || view.chaosPending || view.outOfTurnWindow) return { type: "pass" };
+  return { type: "endTurn", draw: 2 };
+}

packages/engine/src/index.ts

@@ -9,3 +9,4 @@ export * from "./cards";
 export * from "./setups";
 export * from "./game";
 export * from "./view";
+export * from "./automaton";

packages/engine/test/automaton.test.ts

@@ -0,0 +1,116 @@
+import { describe, expect, it } from "vitest";
+import {
+  applyCommand,
+  createGame,
+  type GameState,
+  type PlayerId,
+} from "../src/game";
+import { viewFor } from "../src/view";
+import { automatonCommand, automatonFallback, type AutomatonStyle, type AutomatonTier } from "../src/automaton";
+
+/** Whose input does the maze want right now? */
+function actingSeat(state: GameState): PlayerId {
+  return (
+    state.stack?.waitingOn ??
+    state.pendingDiscard ??
+    state.chaosPending?.queue[0] ??
+    state.outOfTurnWindow?.playerId ??
+    state.players[state.turn.activeIndex]!.id
+  );
+}
+
+/** Drive a full bot-vs-bot game; returns the final state and command count. */
+function playOut(
+  seed: number, players: number, expansion = true,
+  styles: AutomatonStyle[] = [], tiers: AutomatonTier[] = [],
+) {
+  const ids = Array.from({ length: players }, (_, i) => `bot${i + 1}`);
+  const styleOf = new Map(ids.map((id, i) => [id, styles[i] ?? "hunter"]));
+  const tierOf = new Map(ids.map((id, i) => [id, tiers[i] ?? "archmage"]));
+  let { state } = createGame({
+    playerIds: ids,
+    seed,
+    sets: expansion ? ["basic", "expansion1"] : ["basic"],
+    deckRev: 8,
+  });
+  let commands = 0;
+  let stuck = 0;
+  const CAP = 4000;
+  while (state.phase === "playing" && commands < CAP) {
+    const seat = actingSeat(state);
+    const view = viewFor(state, seat);
+    const cmd = automatonCommand(view, styleOf.get(seat), tierOf.get(seat)) ?? automatonFallback(view);
+    let r = applyCommand(state, seat, cmd);
+    if (!r.ok) {
+      const fb = automatonFallback(view);
+      r = applyCommand(state, seat, fb);
+      if (!r.ok) {
+        stuck++;
+        if (stuck > 3) {
+          throw new Error(
+            `automaton stuck at seat ${seat} after ${commands} commands: ` +
+            `${JSON.stringify(cmd)} -> ${JSON.stringify(fb)} both refused (${r.error})`,
+          );
+        }
+        // Last-ditch: burn the turn structure forward.
+        r = applyCommand(state, seat, { type: "endTurn", draw: 0 });
+        if (!r.ok) r = applyCommand(state, seat, { type: "pass" });
+        if (!r.ok) throw new Error(`unrecoverable at ${seat}: ${r.error}`);
+      }
+    } else {
+      stuck = 0;
+    }
+    state = r.state;
+    commands++;
+  }
+  return { state, commands };
+}
+
+describe("automaton vs automaton", () => {
+  it("two clockwork wizards fight a game to its end", () => {
+    const { state, commands } = playOut(11, 2);
+    expect(state.phase).toBe("finished");
+    expect(state.winner).not.toBeNull();
+    expect(commands).toBeLessThan(4000);
+  });
+
+  it("holds up across many seeds without wedging", () => {
+    let finished = 0;
+    for (const seed of [1, 2, 3, 5, 8, 13, 21, 34]) {
+      const { state } = playOut(seed, 2);
+      if (state.phase === "finished") finished++;
+    }
+    // Cautious clockwork can stall a maze; most games must still conclude.
+    expect(finished).toBeGreaterThanOrEqual(6);
+  });
+
+  it("a full table of four automatons concludes", () => {
+    const { state } = playOut(7, 4);
+    expect(state.phase).toBe("finished");
+  });
+
+  it("the apprentice handicap bites where cards decide: combat mirrors", () => {
+    // Deterministic across these seeds: same brains, same dice.
+    let arch = 0, appr = 0;
+    for (const seed of [1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233]) {
+      const { state } = playOut(seed, 2, true,
+        ["berserker", "berserker"], ["archmage", "apprentice"]);
+      if (state.winner === "bot1") arch++;
+      if (state.winner === "bot2") appr++;
+    }
+    expect(arch).toBeGreaterThan(appr);
+  });
+
+  it("every temperament finishes its wars", () => {
+    for (const styles of [
+      ["berserker", "hunter"], ["worrier", "hunter"], ["berserker", "worrier"],
+    ] as AutomatonStyle[][]) {
+      let finished = 0;
+      for (const seed of [3, 17, 29]) {
+        const { state } = playOut(seed, 2, true, styles);
+        if (state.phase === "finished") finished++;
+      }
+      expect(finished).toBeGreaterThanOrEqual(2);
+    }
+  });
+});

packages/server/src/index.ts

@@ -35,7 +35,9 @@ import {
   getRoom,
   joinRoom,
   loadPersistedRooms,
+  addAutomaton,
   addChat,
+  driveOneAutomaton,
   makeTransferCode,
   redactFor,
   roomCount,
@@ -170,6 +172,9 @@ function roomInfo(room: Room) {
     hostId: room.hostId,
     started: room.state !== null,
     colors: Object.fromEntries(room.colorChoices),
+    bots: Object.fromEntries(
+      [...room.bots].map(([name, b]) => [name, `${b.tier} ${b.secret ? "mystery" : b.style}`]),
+    ),
   };
 }
 
@@ -181,6 +186,75 @@ function broadcast(room: Room, makeMessage: (playerId: PlayerId) => unknown): vo
   }
 }
 
+/**
+ * The clockwork plays at a watchable pace: one command every beat, each
+ * broadcast as it lands, until the maze wants a human again.
+ */
+const BOT_STEP_MS = 1500;
+
+/** The clockwork occasionally speaks. Sparingly — menace over chatter. */
+const BOT_LINES: Record<string, Record<string, string[]>> = {
+  hunter: {
+    treasurePickedUp: ["ACQUISITION COMPLETE.", "YOUR GOLD HAS BEEN REALLOCATED."],
+    treasureDropped: ["DELIVERY CONFIRMED. PLEASURE DOING BUSINESS."],
+    damaged: ["AN INEFFICIENT USE OF YOUR TURN."],
+    died: ["INVENTORY TRANSFERRED. CONDOLENCES."],
+  },
+  berserker: {
+    treasurePickedUp: ["GOLD IS MERELY BAIT."],
+    damaged: ["YES. AGAIN.", "PAIN RECEIPT PRINTED."],
+    died: ["SCHEDULED DEMISE: DELIVERED.", "NEXT."],
+    creatureCreated: ["I HAVE MADE YOU A FRIEND. IT IS NOT FRIENDLY."],
+  },
+  worrier: {
+    treasurePickedUp: ["taking this. sorry. sorry."],
+    damaged: ["ow. logged.", "unnecessary!"],
+    wallCreated: ["good wall. safe wall."],
+    died: ["oh no. oh no. it worked?"],
+  },
+};
+
+function botRemark(room: Room, seat: string, events: { type: string; [k: string]: unknown }[]): void {
+  const bot = room.bots.get(seat);
+  if (!bot) return;
+  const lines = BOT_LINES[bot.style] ?? {};
+  for (const e of events) {
+    // Speak only about its own deeds, and rarely.
+    const mine =
+      (e.type === "treasurePickedUp" && e.player === seat) ||
+      (e.type === "treasureDropped" && e.player === seat) ||
+      (e.type === "damaged" && e.player !== seat) ||
+      (e.type === "died" && e.killedBy === seat) ||
+      (e.type === "creatureCreated" && e.controller === seat) ||
+      (e.type === "wallCreated" && e.caster === seat);
+    const pool = lines[e.type];
+    if (!mine || !pool || Math.random() > 0.5) continue;
+    const text = pool[Math.floor(Math.random() * pool.length)]!;
+    const said = addChat(room, seat, text);
+    if (!("error" in said)) {
+      broadcast(room, () => ({ type: "chat", player: seat, text: said.text, at: said.at }));
+    }
+    return; // one remark per step at most
+  }
+}
+const pumping = new Set<string>();
+function runBots(room: Room): void {
+  if (pumping.has(room.id)) return;
+  pumping.add(room.id);
+  const tick = () => {
+    const step = driveOneAutomaton(room);
+    if (!step) {
+      pumping.delete(room.id);
+      return;
+    }
+    broadcast(room, (playerId) => ({ type: "events", events: redactFor(step.events, playerId) }));
+    broadcast(room, (playerId) => ({ type: "state", view: viewForPlayer(room, playerId), seq: room.log.length }));
+    botRemark(room, step.seat, step.events as { type: string }[]);
+    setTimeout(tick, BOT_STEP_MS);
+  };
+  setTimeout(tick, 800); // a beat after the human's own action settles
+}
+
 function broadcastRoomState(room: Room): void {
   broadcast(room, () => roomInfo(room));
   if (room.state) {
@@ -250,6 +324,20 @@ wss.on("connection", (socket) => {
             send(socket, { type: "events", events: redactFor(room.events, name) });
           }
           broadcastRoomState(room);
+          runBots(room);
+          break;
+        }
+        case "addBot": {
+          const room = session.roomId ? getRoom(session.roomId) : undefined;
+          if (!room || !session.playerId) return send(socket, { type: "error", message: "not in a room" });
+          if (session.playerId !== room.hostId) return send(socket, { type: "error", message: "only the host seats automatons" });
+          const result = addAutomaton(
+            room,
+            typeof msg.style === "string" ? msg.style : undefined,
+            typeof msg.tier === "string" ? msg.tier : undefined,
+          );
+          if ("error" in result) return send(socket, { type: "error", message: result.error });
+          broadcastRoomState(room);
           break;
         }
         case "start": {
@@ -260,6 +348,7 @@ wss.on("connection", (socket) => {
           if ("error" in result) return send(socket, { type: "error", message: result.error });
           broadcast(room, (playerId) => ({ type: "events", events: redactFor(result.events, playerId) }));
           broadcastRoomState(room);
+          runBots(room);
           break;
         }
         case "command": {
@@ -272,6 +361,7 @@ wss.on("connection", (socket) => {
           if ("error" in result) return send(socket, { type: "error", message: result.error });
           broadcast(room, (playerId) => ({ type: "events", events: redactFor(result.events, playerId) }));
           broadcast(room, (playerId) => ({ type: "state", view: viewForPlayer(room, playerId), seq: room.log.length }));
+          runBots(room);
           break;
         }
         case "rollDie": {

packages/server/src/rooms.ts

@@ -17,6 +17,14 @@ import {
 } from "@wizwar/engine";
 import { appendLine, ensureDataDir, readAllRooms, roomFileExists, type RoomLine } from "./store";
 import { recordRoom } from "./stats";
+import {
+  automatonCommand,
+  automatonFallback,
+  AUTOMATON_STYLES,
+  AUTOMATON_TIERS,
+  type AutomatonStyle,
+  type AutomatonTier,
+} from "@wizwar/engine";
 
 export interface LoggedCommand {
   seq: number;
@@ -41,6 +49,8 @@ export interface Room {
   events: GameEvent[]; // full history (unredacted — redact per recipient)
   /** Table talk, persisted with the room (public to all seats). */
   chat: { player: PlayerId; text: string; at: string }[];
+  /** Seats the server itself plays: temperament, tier, and secrecy. */
+  bots: Map<PlayerId, { style: AutomatonStyle; secret: boolean; tier: AutomatonTier }>;
 }
 
 const rooms = new Map<string, Room>();
@@ -98,6 +108,7 @@ export function createRoom(hostId: PlayerId): { room: Room; token: string } {
     log: [],
     events: [],
     chat: [],
+    bots: new Map(),
   };
   rooms.set(room.id, room);
   recordRoom(room);
@@ -230,6 +241,68 @@ export function addChat(room: Room, playerId: PlayerId, rawText: string): { text
   return { text, at };
 }
 
+const AUTOMATON_NAMES = ["Automaton", "Automaton II", "Automaton III", "Automaton IV", "Automaton V"];
+
+/** Seat a clockwork wizard (host's choice, before the game starts). */
+export function addAutomaton(
+  room: Room,
+  styleWanted?: string,
+  tierWanted?: string,
+): { name: PlayerId } | { error: string } {
+  if (room.state) return { error: "the game has started" };
+  if (room.players.length >= 6) return { error: "room is full" };
+  const name = AUTOMATON_NAMES.find((n) => !room.players.includes(n));
+  if (!name) return { error: "the workshop is empty" };
+  const known = AUTOMATON_STYLES.includes(styleWanted as AutomatonStyle);
+  const style: AutomatonStyle = known
+    ? (styleWanted as AutomatonStyle)
+    : AUTOMATON_STYLES[randomInt(AUTOMATON_STYLES.length)]!;
+  const secret = !known; // the mystery machine keeps its mood to itself
+  const tier: AutomatonTier = AUTOMATON_TIERS.includes(tierWanted as AutomatonTier)
+    ? (tierWanted as AutomatonTier)
+    : "adept";
+  room.players.push(name);
+  room.bots.set(name, { style, secret, tier });
+  appendLine(room.id, { kind: "join", name, bot: true, style, tier, ...(secret ? { secret: true } : {}) });
+  return { name };
+}
+
+/** Whose input does the maze want right now? */
+function actingSeat(room: Room): PlayerId | null {
+  const s = room.state;
+  if (!s || s.phase !== "playing") return null;
+  return (
+    s.stack?.waitingOn ??
+    s.pendingDiscard ??
+    s.chaosPending?.queue[0] ??
+    s.outOfTurnWindow?.playerId ??
+    s.players[s.turn.activeIndex]!.id
+  );
+}
+
+/**
+ * One automaton command, if the maze is waiting on clockwork. Null when a
+ * human holds the floor (or the game is over, or the clockwork is wedged).
+ */
+export function driveOneAutomaton(room: Room): { seat: PlayerId; events: GameEvent[] } | null {
+  const seat = actingSeat(room);
+  if (!seat || !room.bots.has(seat)) return null;
+  const view = viewFor(room.state!, seat);
+  const bot = room.bots.get(seat);
+  const cmd = automatonCommand(view, bot?.style, bot?.tier) ?? automatonFallback(view);
+  let r = runCommand(room, seat, cmd);
+  if ("error" in r) {
+    r = runCommand(room, seat, automatonFallback(view));
+    if ("error" in r) r = runCommand(room, seat, { type: "endTurn", draw: 0 });
+    if ("error" in r) r = runCommand(room, seat, { type: "pass" });
+    if ("error" in r) {
+      console.error(`automaton ${seat} wedged in ${room.id}: ${r.error}`);
+      return null;
+    }
+  }
+  return { seat, events: r.events };
+}
+
 export interface GameSummary {
   roomId: string;
   name: PlayerId;
@@ -427,13 +500,23 @@ export function loadPersistedRooms(): void {
         log: [],
         events: [],
         chat: [],
+        bots: new Map(),
       };
       for (const line of lines.slice(1)) {
         if (line.kind === "join") {
+          if (line.bot) {
+            room.players.push(line.name);
+            room.bots.set(line.name, {
+              style: (line.style as AutomatonStyle) ?? "hunter",
+              secret: line.secret === true,
+              tier: (line.tier as AutomatonTier) ?? "archmage",
+            });
+          } else {
             const joinHash = line.tokenHash ?? (line.token ? hashToken(line.token) : null);
             if (!joinHash) throw new Error("join line has no token");
             room.players.push(line.name);
             room.tokens.set(line.name, joinHash);
+          }
         } else if (line.kind === "start") {
           const r = startInMemory(room, line.expansion, line.colors, line.deckRev);
           if ("error" in r) throw new Error(`replay start failed: ${r.error}`);

packages/server/src/stats.ts

@@ -24,6 +24,8 @@ export interface EngagementStats {
   firstGameAt: string | null;
   /** How many of the games were hotseat tables reporting in anonymously. */
   hotseatGames: number;
+  /** Games with at least one clockwork wizard at the table. */
+  automatonGames: number;
 }
 
 interface StatsFile extends Omit<EngagementStats, "wizardsSeated"> {
@@ -40,7 +42,7 @@ let data: StatsFile = {
   commandsPlayed: 0, minutesAtTable: 0,
   winsByTreasure: 0, winsByLastStanding: 0,
   longestGameCommands: 0, fullestTable: 0, firstGameAt: null,
-  hotseatGames: 0, wizards: [], roomStages: {},
+  hotseatGames: 0, automatonGames: 0, wizards: [], roomStages: {},
 };
 let wizardSet = new Set<string>();
 let loaded = false;
@@ -84,6 +86,7 @@ export function recordRoom(room: Room): void {
   const stage = data.roomStages[room.id];
 
   for (const p of room.players) {
+    if (room.bots.has(p)) continue; // the clockwork are not wizards seated
     const key = p.toLowerCase();
     if (!wizardSet.has(key)) { wizardSet.add(key); dirty = true; }
   }
@@ -95,6 +98,7 @@ export function recordRoom(room: Room): void {
   }
   if (room.state && data.roomStages[room.id] === "created") {
     data.gamesStarted++;
+    if (room.bots.size > 0) data.automatonGames++;
     data.fullestTable = Math.max(data.fullestTable, room.players.length);
     data.roomStages[room.id] = "started";
     dirty = true;

packages/server/src/store.ts

@@ -24,6 +24,14 @@ export interface JoinLine {
   tokenHash?: string;
   /** Legacy plaintext token (pre-hashing files only). */
   token?: string;
+  /** An automaton seat: no token; the server plays it. */
+  bot?: true;
+  /** The automaton's temperament. */
+  style?: string;
+  /** The automaton's difficulty tier. */
+  tier?: string;
+  /** A mystery machine: the temperament is not revealed to the table. */
+  secret?: true;
 }
 
 export interface StartLine {

packages/web/src/App.svelte

@@ -36,6 +36,7 @@
   /** Leafing through the face-up discard pile. */
   let showDiscards = $state(false);
   let chatDraft = $state("");
+  let botTier = $state("adept");
   /** Card whose official FAQ rulings are open. */
   let faqCardId = $state<string | null>(null);
   /** A discard-pile card enlarged above the pile. */
@@ -1028,7 +1029,7 @@
               {:else}
                 <span class="dot" style:background="#b3a687"></span>
               {/if}
-              {p}{p === net.hostId ? " — host" : ""}{chosen === undefined ? " — choosing…" : ""}
+              {p}{p === net.hostId ? " — host" : ""}{net.roomBots[p] ? ` ⚙ ${net.roomBots[p]}` : chosen === undefined ? " — choosing…" : ""}
             </li>
           {/each}
         </ul>
@@ -1049,6 +1050,20 @@
           {/each}
         </div>
         {#if net.you === net.hostId}
+          {#if net.players.length < 6}
+            <span class="bot-row">
+              ⚙ seat a
+              <select class="tier-pick" bind:value={botTier} aria-label="automaton difficulty">
+                <option value="apprentice">apprentice</option>
+                <option value="adept">adept</option>
+                <option value="archmage">archmage</option>
+              </select>
+              <button class="stamp tiny" onclick={() => net.addBot("hunter", botTier)}>hunter</button>
+              <button class="stamp tiny" onclick={() => net.addBot("berserker", botTier)}>berserker</button>
+              <button class="stamp tiny" onclick={() => net.addBot("worrier", botTier)}>worrier</button>
+              <button class="stamp tiny" onclick={() => net.addBot(undefined, botTier)}>mystery</button>
+            </span>
+          {/if}
           <label class="check">
             <input type="checkbox" bind:checked={withExpansion} />
             Include Expansion Set #1 — monsters &amp; wands
@@ -1156,7 +1171,10 @@
           {#each view.players as p (p.id)}
             <div class="score-row" class:dead={!p.alive} class:active={p.id === view.activePlayerId}>
               <span class="dot" style:background={playerColor(p.id)}></span>
-              <span class="score-name">{p.id}{p.id === view.you ? " (you)" : ""}</span>
+              <span class="score-name">
+                {p.id}{p.id === view.you ? " (you)" : ""}{#if net.roomBots[p.id]}
+                  <span class="score-temper">⚙ {net.roomBots[p.id]}</span>{/if}
+              </span>
               <span class="score-life">{p.life}</span>
               <span class="score-marks">
                 {p.handCount} cards{#if p.lostTurns > 0}&nbsp;· dazed {p.lostTurns}{/if}{#if p.carriedTreasureId}&nbsp;· 💰{/if}
@@ -1833,6 +1851,12 @@
   }
   .slip.creature-note { background: #e7edda; border-color: #7d8a5a; }
   .score-row.active .score-name { font-weight: 700; }
+  .score-temper {
+    font-family: "Caveat", cursive;
+    font-size: 0.85rem;
+    color: #8a7a5e;
+    margin-left: 0.25rem;
+  }
   .table-cards {
     display: flex;
     flex-wrap: wrap;
@@ -1994,6 +2018,21 @@
   .big-peek :global(.card:hover) { transform: scale(2.1); }
   .big-peek { display: flex; flex-direction: column; align-items: center; }
   .big-peek-note { margin-top: 6.8rem; max-width: 15rem; font-size: 0.8rem; }
+  .tier-pick {
+    background: #f6f0df;
+    border: 1px solid #b3a687;
+    border-radius: 3px;
+    font: inherit;
+    color: #43331f;
+    padding: 0.1rem 0.25rem;
+  }
+  .bot-row {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.35rem;
+    font-size: 0.85rem;
+    color: #6b5a41;
+  }
   .discard-link {
     background: none;
     border: none;

packages/web/src/Help.svelte

@@ -100,6 +100,7 @@
               <dt>{stats.longestGameCommands}</dt><dd>actions in the longest game yet played — every step, spell, and pass in its ledger</dd>
               <dt>{stats.fullestTable}</dt><dd>wizards at the fullest table</dd>
               <dt>{stats.hotseatGames}</dt><dd>of the games were hotseat tables, reporting in anonymously</dd>
+              <dt>{stats.automatonGames ?? 0}</dt><dd>games fought against the clockwork</dd>
             </dl>
             {#if stats.firstGameAt}
               <p class="colophon">The first game was dealt {new Date(String(stats.firstGameAt)).toLocaleDateString(undefined, { year: "numeric", month: "long", day: "numeric" })}. Hotseat tables send only counts — names and moves stay on the device.</p>

packages/web/src/net.svelte.ts

@@ -225,6 +225,7 @@ class Net {
   started = $state(false);
   /** Lobby standee choices, by player name. */
   roomColors = $state<Record<string, number>>({});
+  roomBots = $state<Record<string, string>>({});
   you = $state<string | null>(null);
   view = $state<GameView | null>(null);
   log = $state<string[]>([]);
@@ -295,6 +296,7 @@ class Net {
         case "room":
           this.roomId = msg.roomId;
           this.roomColors = msg.colors ?? {};
+          this.roomBots = msg.bots ?? {};
           if (this.you && this.token) {
             const seat: Seat = { name: this.you, roomId: msg.roomId, token: this.token };
             localStorage.setItem(SEAT_KEY, JSON.stringify(seat));
@@ -426,6 +428,10 @@ class Net {
   }
 
   /** Ask the server how all our games are doing. */
+  addBot(style?: string, tier?: string): void {
+    this.send({ type: "addBot", ...(style ? { style } : {}), ...(tier ? { tier } : {}) });
+  }
+
   rollTableDie(): void {
     this.send({ type: "rollDie" });
   }