refactor(auth): drop the isProduction prop nothing on the signin path reads

Same shape as the `isWorkflowRunning` removal: declared, required, threaded
through every layer, and never read at the end of the chain.

`SocialLoginButtons` declares `isProduction: boolean` as a REQUIRED prop and
never reads it, so every caller had to produce and forward a value that was
discarded. Neither `login-form` nor `signup-form` reads it either — each only
declares it, destructures it, and passes it down. `signup-form` forwards it twice,
through its own inner `SignupFormContent` hop.

With the chain gone, `getOAuthProviderStatus` has no consumer for the
`isProduction: isProd` it returned: the pages destructured it only to forward it,
and `/api/auth/providers` already takes just the three availability flags. So the
return value and its `isProd` import go too.

`isProduction` stays alive where it is genuinely used — `verify-content.tsx`
branches on it and hands it to `useVerification`, and imports `isProd` directly
rather than through this helper. That path is untouched.

Found by the rule enabled in #7037: it was the only `.tsx` unused-parameter
warning in `apps/sim`.

apps/sim/app/(auth)/components/oauth-provider-checker.tsx

@@ -3,7 +3,6 @@ import {
   isGithubAuthDisabled,
   isGoogleAuthDisabled,
   isMicrosoftAuthDisabled,
-  isProd,
 } from '@/lib/core/config/env-flags'
 
 export async function getOAuthProviderStatus() {
@@ -16,5 +15,5 @@ export async function getOAuthProviderStatus() {
   const microsoftAvailable =
     !!(env.MICROSOFT_CLIENT_ID && env.MICROSOFT_CLIENT_SECRET) && !isMicrosoftAuthDisabled
 
-  return { githubAvailable, googleAvailable, microsoftAvailable, isProduction: isProd }
+  return { githubAvailable, googleAvailable, microsoftAvailable }
 }

apps/sim/app/(auth)/components/social-login-buttons.tsx

@@ -15,7 +15,6 @@ interface SocialLoginButtonsProps {
   googleAvailable: boolean
   microsoftAvailable: boolean
   callbackURL?: string
-  isProduction: boolean
   children?: ReactNode
 }
 
@@ -24,7 +23,6 @@ export function SocialLoginButtons({
   googleAvailable,
   microsoftAvailable,
   callbackURL = '/workspace',
-  isProduction,
   children,
 }: SocialLoginButtonsProps) {
   const [isGithubLoading, setIsGithubLoading] = useState(false)

apps/sim/app/(auth)/login/login-form.tsx

@@ -87,13 +87,11 @@ export default function LoginPage({
   githubAvailable,
   googleAvailable,
   microsoftAvailable,
-  isProduction,
   registrationDisabled,
 }: {
   githubAvailable: boolean
   googleAvailable: boolean
   microsoftAvailable: boolean
-  isProduction: boolean
   /** DISABLE_REGISTRATION. Hides the signup cross-link, which `/signup` blocks. */
   registrationDisabled: boolean
 }) {
@@ -430,7 +428,6 @@ export default function LoginPage({
             googleAvailable={googleAvailable}
             githubAvailable={githubAvailable}
             microsoftAvailable={microsoftAvailable}
-            isProduction={isProduction}
             callbackURL={callbackUrl}
           >
             {ssoEnabled && !hasOnlySSO && (

apps/sim/app/(auth)/login/page.tsx

@@ -12,8 +12,7 @@ export const metadata: Metadata = {
 export const dynamic = 'force-dynamic'
 
 export default async function LoginPage() {
-  const { githubAvailable, googleAvailable, microsoftAvailable, isProduction } =
-    await getOAuthProviderStatus()
+  const { githubAvailable, googleAvailable, microsoftAvailable } = await getOAuthProviderStatus()
 
   return (
     <Suspense fallback={<LoginLoading />}>
@@ -21,7 +20,6 @@ export default async function LoginPage() {
         githubAvailable={githubAvailable}
         googleAvailable={googleAvailable}
         microsoftAvailable={microsoftAvailable}
-        isProduction={isProduction}
         registrationDisabled={isRegistrationDisabled}
       />
     </Suspense>

apps/sim/app/(auth)/signup/page.tsx

@@ -36,15 +36,13 @@ export default async function SignupPage({
     )
   }
 
-  const { githubAvailable, googleAvailable, microsoftAvailable, isProduction } =
-    await getOAuthProviderStatus()
+  const { githubAvailable, googleAvailable, microsoftAvailable } = await getOAuthProviderStatus()
 
   return (
     <SignupForm
       githubAvailable={githubAvailable}
       googleAvailable={googleAvailable}
       microsoftAvailable={microsoftAvailable}
-      isProduction={isProduction}
       emailSignupEnabled={!isEmailSignupDisabled}
       emailVerificationEnabled={isEmailVerificationEffectivelyEnabled()}
     />

apps/sim/app/(auth)/signup/signup-form.tsx

@@ -91,7 +91,6 @@ interface SignupFormProps {
   githubAvailable: boolean
   googleAvailable: boolean
   microsoftAvailable: boolean
-  isProduction: boolean
   emailSignupEnabled: boolean
   /** Server-derived: verification is enabled AND a mail provider is configured. */
   emailVerificationEnabled: boolean
@@ -101,7 +100,6 @@ function SignupFormContent({
   githubAvailable,
   googleAvailable,
   microsoftAvailable,
-  isProduction,
   emailSignupEnabled,
   emailVerificationEnabled,
 }: SignupFormProps) {
@@ -484,7 +482,6 @@ function SignupFormContent({
           googleAvailable={googleAvailable}
           microsoftAvailable={microsoftAvailable}
           callbackURL={redirectUrl || '/workspace'}
-          isProduction={isProduction}
         >
           {ssoEnabled && !hasOnlySSO && (
             <SSOLoginButton callbackURL={redirectUrl || '/workspace'} variant='outline' />
@@ -507,7 +504,6 @@ export default function SignupPage({
   githubAvailable,
   googleAvailable,
   microsoftAvailable,
-  isProduction,
   emailSignupEnabled,
   emailVerificationEnabled,
 }: SignupFormProps) {
@@ -519,7 +515,6 @@ export default function SignupPage({
         githubAvailable={githubAvailable}
         googleAvailable={googleAvailable}
         microsoftAvailable={microsoftAvailable}
-        isProduction={isProduction}
         emailSignupEnabled={emailSignupEnabled}
         emailVerificationEnabled={emailVerificationEnabled}
       />