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/bosses.ts

@@ -0,0 +1,64 @@
+import type { Boss } from "@elysium/types";
+
+export const DEFAULT_BOSSES: Boss[] = [
+  {
+    id: "troll_king",
+    name: "The Troll King",
+    description:
+      "Gruk the Immovable has terrorised the trade roads for decades. Merchants will pay handsomely for his head.",
+    status: "available",
+    maxHp: 1_000,
+    currentHp: 1_000,
+    damagePerSecond: 5,
+    goldReward: 10_000,
+    essenceReward: 25,
+    crystalReward: 0,
+    upgradeRewards: ["click_2"],
+    prestigeRequirement: 0,
+  },
+  {
+    id: "lich_queen",
+    name: "The Lich Queen",
+    description:
+      "Seraphina the Undying commands legions of undead from her bone throne. Her defeat will echo through history.",
+    status: "locked",
+    maxHp: 10_000,
+    currentHp: 10_000,
+    damagePerSecond: 20,
+    goldReward: 100_000,
+    essenceReward: 200,
+    crystalReward: 10,
+    upgradeRewards: ["global_2"],
+    prestigeRequirement: 0,
+  },
+  {
+    id: "elder_dragon",
+    name: "Elder Dragon Vaeltharox",
+    description:
+      "The eldest dragon in existence, older than the kingdom itself. Even his breath can level mountains.",
+    status: "locked",
+    maxHp: 100_000,
+    currentHp: 100_000,
+    damagePerSecond: 75,
+    goldReward: 1_000_000,
+    essenceReward: 1_000,
+    crystalReward: 50,
+    upgradeRewards: ["click_3"],
+    prestigeRequirement: 1,
+  },
+  {
+    id: "void_titan",
+    name: "The Void Titan",
+    description:
+      "A creature from beyond the veil of reality, drawn by the power your guild has accumulated. It must not be allowed to exist.",
+    status: "locked",
+    maxHp: 1_000_000,
+    currentHp: 1_000_000,
+    damagePerSecond: 250,
+    goldReward: 10_000_000,
+    essenceReward: 5_000,
+    crystalReward: 200,
+    upgradeRewards: [],
+    prestigeRequirement: 3,
+  },
+];