Fix critical auth, billing, credit, and rerun correctness bugs

[cursor]

Summary

• Sanitizes GitHub OAuth return paths to prevent external post-login redirects.
• Restores Stripe webhook processing to update the app's Neon billing tables and user billing columns.
• Refunds credits when App Idea Chat or Pattern Analyzer fail after charging.
• Preserves existing blueprints until replacement blueprints are successfully saved on analysis reruns.

Validation

• pnpm install --frozen-lockfile
• pnpm exec tsc --noEmit
• pnpm exec eslint app/api/analyses/[id]/run/route.ts app/api/app-idea-chat/route.ts app/api/auth/github/callback/route.ts app/api/auth/github/login/route.ts app/api/pattern-analyzer/route.ts app/api/stripe/webhook/route.ts lib/queries.ts lib/redirects.ts

Note: full pnpm lint still fails on pre-existing unrelated lint errors outside the changed files.

  

[vercel]

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Project	Deployment	Actions	Updated (UTC)
repo-app-architect	Ready	Preview, Comment	May 24, 2026 11:13am
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v0-repo-app-architect	Ready	Preview, Comment, Open in v0	May 24, 2026 11:13am

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