chore: reduce web backend log verbosity

- Reduce "Calculated usage and settled balance" DEBUG log to only include netBalance, usageThisCycle, grantsCount, isPersonalContext
- Remove redundant console.log statements from auth redirect callback
- Demote redirect-related logs from INFO to DEBUG level
- Remove "chat completions request received" INFO log (redundant with analytics tracking)

Author: brandonkachen

packages/billing/src/balance-calculator.ts

@@ -373,7 +373,7 @@ export async function calculateUsageAndBalance(
   logger.debug(
     {
       userId,
-      balance,
+      netBalance: balance.netBalance,
       usageThisCycle,
       grantsCount: grants.length,
       isPersonalContext,

web/src/app/api/auth/[...nextauth]/auth-options.ts

@@ -161,51 +161,30 @@ export const authOptions: NextAuthOptions = {
       return session
     },
     async redirect({ url, baseUrl }) {
-      console.log('🟡 NextAuth redirect callback:', { url, baseUrl })
-
       const potentialRedirectUrl = new URL(url, baseUrl)
       const authCode = potentialRedirectUrl.searchParams.get('auth_code')
-      const referralCode =
-        potentialRedirectUrl.searchParams.get('referral_code')
-
-      console.log('🟡 NextAuth redirect parsed params:', {
-        authCode: !!authCode,
-        referralCode,
-        allParams: Object.fromEntries(
-          potentialRedirectUrl.searchParams.entries(),
-        ),
-      })
 
       if (authCode) {
         const onboardUrl = new URL(`${baseUrl}/onboard`)
         potentialRedirectUrl.searchParams.forEach((value, key) => {
           onboardUrl.searchParams.set(key, value)
         })
-        console.log('🟡 NextAuth CLI flow redirect to:', onboardUrl.toString())
-        logger.info(
+        logger.debug(
           { url, authCode, redirectTarget: onboardUrl.toString() },
           'Redirecting CLI flow to /onboard',
         )
         return onboardUrl.toString()
       }
 
       if (url.startsWith('/') || potentialRedirectUrl.origin === baseUrl) {
-        console.log(
-          '🟡 NextAuth web flow redirect to:',
-          potentialRedirectUrl.toString(),
-        )
-        logger.info(
+        logger.debug(
           { url, redirectTarget: potentialRedirectUrl.toString() },
           'Redirecting web flow to callbackUrl',
         )
         return potentialRedirectUrl.toString()
       }
 
-      console.log(
-        '🟡 NextAuth external/invalid URL, redirect to baseUrl:',
-        baseUrl,
-      )
-      logger.info(
+      logger.debug(
         { url, baseUrl, redirectTarget: baseUrl },
         'Callback URL is external or invalid, redirecting to baseUrl',
       )

web/src/app/api/v1/chat/completions/_post.ts

@@ -166,7 +166,6 @@ export async function postChatCompletions(params: {
       )
     }
 
-    logger.info({ userInfo, runId }, 'chat completions request received')
     // Track API request
     trackEvent({
       event: AnalyticsEvent.CHAT_COMPLETIONS_REQUEST,