Static OAuth client credentials (#150)

* refactor(env): set static OAuth client credentials

* chore(env): update template

* chore(env): update template

* chore(env): rename template OAuth client credentials

Author: coopbri

.env.local.template

@@ -1,9 +1,9 @@
 # auth
 # NB: an auth secret can be generated and injected automatically with `npx auth`, see https://cli.authjs.dev
 AUTH_SECRET=""
-# get a client ID and secret from HIDRA app
-AUTH_CLIENT_ID=""
-AUTH_CLIENT_SECRET=""
+# OAuth client credentials, must match an allowed OAuth application in the IDP
+AUTH_CLIENT_ID="mock-backfeed-app-client-id"
+AUTH_CLIENT_SECRET="mock-backfeed-app-client-secret"
 
 # payment processing
 # NB: for local development, make sure this token is generated for the Polar sandbox environment (https://docs.polar.sh/integrate/sandbox) in the Polar dashboard. If `NODE_ENV` is `development`, the sandbox will be used, otherwise Polar production will be used