feat: integrate @t3-oss/env for environment variable management across the application

apps/web/src/env.ts

@@ -0,0 +1,27 @@
+import { vercel } from "@t3-oss/env-core/presets-zod";
+import { createEnv } from "@t3-oss/env-nextjs";
+import { z } from "zod";
+import { keys as auth } from "@opencut/auth/keys";
+import { keys as db } from "@opencut/db/keys";
+
+export const env = createEnv({
+  extends: [vercel(), auth(), db()],
+  server: {
+    ANALYZE: z.string().optional(),
+    // Added by Vercel
+    NEXT_RUNTIME: z.enum(["nodejs", "edge"]).optional(),
+    NODE_ENV: z
+      .enum(["development", "production", "test"])
+      .default("development"),
+    UPSTASH_REDIS_REST_URL: z.string().url(),
+    UPSTASH_REDIS_REST_TOKEN: z.string(),
+  },
+  client: {},
+  runtimeEnv: {
+    ANALYZE: process.env.ANALYZE,
+    NEXT_RUNTIME: process.env.NEXT_RUNTIME,
+    NODE_ENV: process.env.NODE_ENV,
+    UPSTASH_REDIS_REST_URL: process.env.UPSTASH_REDIS_REST_URL,
+    UPSTASH_REDIS_REST_TOKEN: process.env.UPSTASH_REDIS_REST_TOKEN,
+  },
+});