refactor(env): remove defaults from most client env vars

- Remove .default() from NEXT_PUBLIC_CB_ENVIRONMENT
- Remove .default() from NEXT_PUBLIC_CODEBUFF_APP_URL
- Remove .default() from NEXT_PUBLIC_WEB_PORT
- Keep defaults only for SUPPORT_EMAIL and POSTHOG_HOST_URL
- Add NEXT_PUBLIC_WEB_PORT to .env.example

Author: brandonkachen

.env.example

@@ -35,3 +35,4 @@ NEXT_PUBLIC_POSTHOG_API_KEY=phc_dummy_posthog_key
 NEXT_PUBLIC_POSTHOG_HOST_URL=https://us.i.posthog.com
 NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=pk_test_dummy_publishable
 NEXT_PUBLIC_STRIPE_CUSTOMER_PORTAL=https://billing.stripe.com/p/login/test_dummy
+NEXT_PUBLIC_WEB_PORT=3000

common/src/env-schema.ts

@@ -3,8 +3,8 @@ import z from 'zod/v4'
 export const CLIENT_ENV_PREFIX = 'NEXT_PUBLIC_'
 
 export const clientEnvSchema = z.object({
-  NEXT_PUBLIC_CB_ENVIRONMENT: z.enum(['dev', 'test', 'prod']).default('prod'),
-  NEXT_PUBLIC_CODEBUFF_APP_URL: z.url().min(1).default('https://codebuff.com'),
+  NEXT_PUBLIC_CB_ENVIRONMENT: z.enum(['dev', 'test', 'prod']),
+  NEXT_PUBLIC_CODEBUFF_APP_URL: z.url().min(1),
   NEXT_PUBLIC_SUPPORT_EMAIL: z
     .email()
     .min(1)
@@ -17,7 +17,7 @@ export const clientEnvSchema = z.object({
   NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY: z.string().min(1),
   NEXT_PUBLIC_STRIPE_CUSTOMER_PORTAL: z.url().min(1),
   NEXT_PUBLIC_GOOGLE_SITE_VERIFICATION_ID: z.string().optional(),
-  NEXT_PUBLIC_WEB_PORT: z.coerce.number().min(1000).default(3000),
+  NEXT_PUBLIC_WEB_PORT: z.coerce.number().min(1000),
 } satisfies Record<`${typeof CLIENT_ENV_PREFIX}${string}`, any>)
 export const clientEnvVars = clientEnvSchema.keyof().options
 export type ClientEnvVar = (typeof clientEnvVars)[number]