feat: introduce web dashboard with multi-bot management

- add Discord OAuth2 authentication
- allow users to register their bots via token
- implement dynamic bot start/stop system
- store bots in database (multi-tenant)
- replace single-bot env setup with scalable architecture

apps/api/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "@saas/api",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "tsx watch src/index.ts",
+    "build": "npm run build -w @saas/shared && tsc -p tsconfig.json",
+    "typecheck": "npm run build -w @saas/shared && tsc -p tsconfig.json --noEmit",
+    "start": "node dist/index.js",
+    "migrate": "node scripts/migrate.mjs"
+  },
+  "dependencies": {
+    "@saas/shared": "*",
+    "bullmq": "^5.21.2",
+    "cookie-parser": "^1.4.7",
+    "cors": "^2.8.5",
+    "dotenv": "^16.4.7",
+    "express": "^4.21.2",
+    "ioredis": "^5.4.1",
+    "jose": "^5.9.6",
+    "pg": "^8.13.3",
+    "zod": "^3.24.1"
+  },
+  "devDependencies": {
+    "@types/cookie-parser": "^1.4.8",
+    "@types/cors": "^2.8.17",
+    "@types/express": "^4.17.21",
+    "@types/pg": "^8.11.11"
+  }
+}