Rename AI Tycoon to Token Empire across entire codebase

Full rebrand: UI display text, package scope (@ai-tycoon/* -> @token-empire/*),
localStorage keys, Docker/CI image paths, database names, and documentation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/server/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@ai-tycoon/server",
+  "name": "@token-empire/server",
   "version": "0.0.1",
   "private": true,
   "type": "module",
@@ -13,7 +13,7 @@
     "db:push": "drizzle-kit push"
   },
   "dependencies": {
-    "@ai-tycoon/shared": "workspace:*",
+    "@token-empire/shared": "workspace:*",
     "@hono/node-server": "^1.13.8",
     "bcryptjs": "^3.0.3",
     "drizzle-orm": "^0.44.2",
@@ -23,7 +23,7 @@
     "uuid": "^11.1.0"
   },
   "devDependencies": {
-    "@ai-tycoon/tsconfig": "workspace:*",
+    "@token-empire/tsconfig": "workspace:*",
     "@types/node": "^25.6.0",
     "drizzle-kit": "^0.31.1",
     "typescript": "^5.8.3"