Add production waitlist email verification

[leoisadev1]

Summary

• Replace production sign-up gating with a Resend-backed waitlist email verification flow
• Redirect production /sign-in traffic to /sign-up while keeping preview auth behavior available
• Add Convex waitlist storage/code verification and update build chunking/size checks for current TanStack output

Validation

• bun run lint
• bun run check-types
• bun test scripts/build-size.test.ts scripts/auth-redirects.test.ts scripts/auth-errors.test.ts
• bun run build

Production config

• Set RESEND_API_KEY on the production Convex deployment
• Set EMAIL_FROM on the production Convex deployment

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Summary by cubic

Adds a production waitlist email verification flow using Convex actions and Resend to replace public sign-ups. Also redirects unauthenticated production /sign-in to /sign-up and updates bundling and build-size checks.

• New Features

  • Production sign-up uses a 6‑digit waitlist code sent via Resend; Convex stores entries in waitlistEntries, enforces cooldowns, and verifies codes.
  • In production, unauthenticated /sign-in redirects to /sign-up; preview auth is unchanged.
  • Worktree-scoped dev: WORKTREE_NAME drives portless domains; scripts/setup-agentic-convex.ts creates/selects per‑worktree Convex dev deployments and syncs env.
  • Build uses Rolldown code-splitting groups; build-size checks now support .output/public and related turbo outputs.

• Migration

  • In the production Convex env, set RESEND_API_KEY and EMAIL_FROM (optionally SITE_URL).
  • For local dev, run bun run dev:setup (or bun run dev:setup:local) to create/select a per‑worktree deployment and sync apps/web/.env.

^{Written for commit 1992486. Summary will update on new commits. Review in cubic}

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 1278573e-367c-4a29-8be8-9d1513d2edf4

📥 Commits

Reviewing files that changed from the base of the PR and between 4228e43 and 1992486.

⛔ Files ignored due to path filters (1)

• packages/backend/convex/_generated/api.d.ts is excluded by !**/_generated/**

📒 Files selected for processing (8)

• apps/web/src/components/sign-in-form.tsx
• apps/web/src/components/sign-up-form.tsx
• apps/web/src/routes/sign-in.tsx
• apps/web/vite.config.ts
• packages/backend/convex/schemaProductIdentityTables.ts
• packages/backend/convex/waitlist.ts
• scripts/build-size.ts
• turbo.json

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