feat: initial elysium idle game prototype

Sets up the full monorepo with pnpm workspaces. Includes shared types
package, Hono API with Discord OAuth/JWT auth, Prisma v6 + MongoDB
Atlas, and React + Vite frontend with game loop, five tabs, and
Discord-linked save/load.

apps/api/src/data/adventurers.ts

@@ -0,0 +1,104 @@
+import type { Adventurer } from "@elysium/types";
+
+export const DEFAULT_ADVENTURERS: Adventurer[] = [
+  {
+    id: "peasant",
+    name: "Peasant",
+    class: "warrior",
+    level: 1,
+    goldPerSecond: 0.1,
+    essencePerSecond: 0,
+    count: 0,
+    unlocked: true,
+  },
+  {
+    id: "militia",
+    name: "Militia",
+    class: "warrior",
+    level: 2,
+    goldPerSecond: 0.5,
+    essencePerSecond: 0,
+    count: 0,
+    unlocked: false,
+  },
+  {
+    id: "apprentice",
+    name: "Apprentice Mage",
+    class: "mage",
+    level: 3,
+    goldPerSecond: 1.5,
+    essencePerSecond: 0.01,
+    count: 0,
+    unlocked: false,
+  },
+  {
+    id: "scout",
+    name: "Scout",
+    class: "rogue",
+    level: 4,
+    goldPerSecond: 4,
+    essencePerSecond: 0.02,
+    count: 0,
+    unlocked: false,
+  },
+  {
+    id: "acolyte",
+    name: "Acolyte",
+    class: "cleric",
+    level: 5,
+    goldPerSecond: 10,
+    essencePerSecond: 0.05,
+    count: 0,
+    unlocked: false,
+  },
+  {
+    id: "ranger",
+    name: "Ranger",
+    class: "ranger",
+    level: 6,
+    goldPerSecond: 25,
+    essencePerSecond: 0.1,
+    count: 0,
+    unlocked: false,
+  },
+  {
+    id: "knight",
+    name: "Knight",
+    class: "warrior",
+    level: 7,
+    goldPerSecond: 75,
+    essencePerSecond: 0.2,
+    count: 0,
+    unlocked: false,
+  },
+  {
+    id: "archmage",
+    name: "Archmage",
+    class: "mage",
+    level: 8,
+    goldPerSecond: 200,
+    essencePerSecond: 0.5,
+    count: 0,
+    unlocked: false,
+  },
+  {
+    id: "paladin",
+    name: "Paladin",
+    class: "paladin",
+    level: 9,
+    goldPerSecond: 600,
+    essencePerSecond: 1,
+    count: 0,
+    unlocked: false,
+  },
+  {
+    id: "dragon_rider",
+    name: "Dragon Rider",
+    class: "ranger",
+    level: 10,
+    goldPerSecond: 2000,
+    essencePerSecond: 3,
+    count: 0,
+    unlocked: false,
+  },
+];