fix(cli): update Next.js templates to 16.2

[AmanVarshney01]

Summary

• bump generated Next.js projects and the docs app to 16.2.0
• update the Next app tsconfig template to match Next 16.2's expected TypeScript config
• regenerate embedded templates and refresh the lockfile

Why

I checked the official Next.js 16.2 release notes and then manually scaffolded fresh Next projects to verify compatibility. The version bump itself was fine, but fresh 16.2 apps were auto-rewriting the generated apps/web/tsconfig.json on first build. This PR bakes those TypeScript settings into the template so new projects start clean.

Verification

• bun run check
• cd apps/web && bun run build
• cd apps/web && bunx tsc --noEmit
• manual scaffold smoke tests:
  • next + self + none: bun install, bun run build, bun run check-types
  • next + self + better-auth: bun install, bun run build, bun run check-types
  • next + hono + better-auth: bun install, bun run build, bun run check-types

Summary by CodeRabbit

• Dependencies

  • Updated Next.js and related build tools to the latest versions for improved stability and performance.

• Compatibility

  • Enhanced support for newer React JSX transform conventions and framework configurations.

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Project	Deployment	Actions	Updated (UTC)
create-better-t-stack-web	Ready	Preview, Comment	Mar 18, 2026 10:52pm

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 7aa3b1b9-3710-46c5-8f25-cf575564310c

📥 Commits

Reviewing files that changed from the base of the PR and between b23dd72 and 9288076.

⛔ Files ignored due to path filters (1)

• bun.lock is excluded by !**/*.lock

📒 Files selected for processing (5)

• apps/web/package.json
• packages/template-generator/src/templates.generated.ts
• packages/template-generator/src/utils/add-deps.ts
• packages/template-generator/templates/frontend/react/next/package.json.hbs
• packages/template-generator/templates/frontend/react/next/tsconfig.json.hbs

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Walkthrough

Version bumps for Next.js dependency from ^16.1.x to ^16.2.0 across multiple package files and configuration updates. TypeScript JSX configuration updated from "preserve" to "react-jsx" in template configuration. Template include paths updated to support newer development type patterns.

Changes

Cohort / File(s)	Summary
Next.js Dependency Updates apps/web/package.json, packages/template-generator/templates/frontend/react/next/package.json.hbs, packages/template-generator/src/utils/add-deps.ts	Next.js dependency version bumped from ^16.1.x to ^16.2.0 across web application and template packages.
TypeScript Configuration Updates packages/template-generator/templates/frontend/react/next/tsconfig.json.hbs	JSX runtime changed from "preserve" to "react-jsx"; include glob paths updated to normalize path syntax and add support for .next/dev/types/**/*.ts.
Generated Templates packages/template-generator/src/templates.generated.ts	Template configurations and framework-specific layouts updated for dependency versions and React JSX transform conventions; theme providers and auth handling components integrated.

Possibly related PRs

• fix(cli): fix env package for self backend #757: Updates Next.js dependency declarations in template and package version maps similarly to this PR's version bumping approach.
• fix(cli): bump standard better-auth templates to 1.5.2 #928: Modifies the dependencyVersionMap in packages/template-generator/src/utils/add-deps.ts, the same file being updated for Next.js version changes.
• feat(cli): upgrade next and elysia #533: Updates Next.js frontend package.json templates with version upgrades aligned with this PR's Next.js dependency changes.

📝 Coding Plan

• Generate coding plan for human review comments

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