"Hold on —": cautions before easy-to-regret plays, and a house bot tier

An optional confirmation (on by default, one checkbox to silence) catches
the classic table groans before they land: ending the turn with movement
unspent, ending it with a hand too full to take the draw, and walking off
— or ending on — your own home with a deliverable treasure still in your
arms. Preferences also learn a default automaton skill, remembered from
either the prefs panel or the lobby's tier picker.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/web/src/prefs.svelte.ts

@@ -14,12 +14,19 @@ export interface Prefs {
   wizardName: string;
   /** Preferred wizard color (0-5), claimed in lobbies when free. */
   color: number | null;
+  /** "Are you sure?" prompts before easy-to-regret plays. */
+  cautions: boolean;
+  /** Default skill for automatons seated from the lobby. */
+  botTier: "apprentice" | "adept" | "archmage";
 }
 
 const KEY = "wizwar-prefs";
 
 function load(): Prefs {
-  const fallback: Prefs = { art: "photo", autoGrab: false, flourishes: true, wizardName: "", color: null };
+  const fallback: Prefs = {
+    art: "photo", autoGrab: false, flourishes: true, wizardName: "", color: null,
+    cautions: true, botTier: "adept",
+  };
   try {
     const raw = localStorage.getItem(KEY);
     if (!raw) return fallback;
@@ -30,6 +37,8 @@ function load(): Prefs {
       flourishes: p.flourishes !== false,
       wizardName: typeof p.wizardName === "string" ? p.wizardName.slice(0, 20) : "",
       color: typeof p.color === "number" && p.color >= 0 && p.color <= 5 ? p.color : null,
+      cautions: p.cautions !== false,
+      botTier: p.botTier === "apprentice" || p.botTier === "archmage" ? p.botTier : "adept",
     };
   } catch {
     return fallback;