feat: add apotheosis third prestige layer and remove IDEAS.md

Apotheosis is the ultimate reset — wipes absolutely everything
including prestige and transcendence — in exchange for a pure
bragging-rights badge. No mechanical benefit whatsoever.

Unlock condition: all 15 Transcendence echo upgrades purchased.
Can be achieved multiple times; each cycle requires repurchasing
all Transcendence upgrades again.

What survives: Codex lore entries and lifetime profile statistics.
What is wiped: resources, prestige, runestones, transcendence data
(echoes, echo upgrades, multipliers), equipment, upgrades, bosses,
quests, zones, adventurers, achievements.

New files: Apotheosis.ts type, apotheosis service, apotheosis route,
ApotheosisPanel.tsx component.

Modified: GameState (apotheosis field), Api.ts, types/index.ts,
prestige service (carry apotheosis), transcendence service (carry
apotheosis), game.ts anti-cheat (cap apotheosis count), API client,
GameContext (apotheosis() function), GameLayout (new tab), ResourceBar
(gold apotheosis badge shown above transcendence and prestige badges),
styles.css, AboutPanel how-to-play.

Also removes IDEAS.md — all planned features are now implemented!

apps/web/src/components/game/GameLayout.tsx

@@ -14,13 +14,14 @@ import { EditProfileModal } from "./EditProfileModal.js";
 import { EquipmentPanel } from "./EquipmentPanel.js";
 import { OfflineModal } from "./OfflineModal.js";
 import { PrestigePanel } from "./PrestigePanel.js";
+import { ApotheosisPanel } from "./ApotheosisPanel.js";
 import { TranscendencePanel } from "./TranscendencePanel.js";
 import { QuestPanel } from "./QuestPanel.js";
 import { StatisticsPanel } from "./StatisticsPanel.js";
 import { UpgradePanel } from "./UpgradePanel.js";
 import { DailyChallengePanel } from "./DailyChallengePanel.js";
 
-type Tab = "adventurers" | "upgrades" | "quests" | "bosses" | "equipment" | "achievements" | "prestige" | "transcendence" | "statistics" | "daily" | "codex" | "about";
+type Tab = "adventurers" | "upgrades" | "quests" | "bosses" | "equipment" | "achievements" | "prestige" | "transcendence" | "apotheosis" | "statistics" | "daily" | "codex" | "about";
 
 const BASE_TABS: { id: Tab; label: string }[] = [
   { id: "adventurers", label: "⚔️ Adventurers" },
@@ -31,6 +32,7 @@ const BASE_TABS: { id: Tab; label: string }[] = [
   { id: "achievements", label: "🏆 Achievements" },
   { id: "prestige", label: "⭐ Prestige" },
   { id: "transcendence", label: "🌌 Transcendence" },
+  { id: "apotheosis", label: "✨ Apotheosis" },
   { id: "statistics", label: "📊 Statistics" },
   { id: "daily", label: "📅 Daily" },
   { id: "codex", label: "📖 Codex" },
@@ -69,6 +71,7 @@ export const GameLayout = (): React.JSX.Element => {
         runestones={state.prestige.runestones}
         prestigeCount={state.prestige.count}
         transcendenceCount={state.transcendence?.count ?? 0}
+        apotheosisCount={state.apotheosis?.count ?? 0}
         profileUrl={profileUrl}
         onEditProfile={() => { setEditingProfile(true); }}
         lastSavedAt={lastSavedAt}
@@ -116,6 +119,7 @@ export const GameLayout = (): React.JSX.Element => {
             {activeTab === "achievements" && <AchievementPanel />}
             {activeTab === "prestige" && <PrestigePanel />}
             {activeTab === "transcendence" && <TranscendencePanel />}
+            {activeTab === "apotheosis" && <ApotheosisPanel />}
             {activeTab === "statistics" && <StatisticsPanel />}
             {activeTab === "daily" && <DailyChallengePanel />}
             {activeTab === "codex" && <CodexPanel />}