fix(create-vinext-app): generate next env on first run

[james-elicx]

Summary

• omit generated next-env.d.ts from the scaffold and ignore it until vinext dev/build creates it
• load vinext/types before first run while preserving Node and platform type entries
• update existing Next-less apps and add regression coverage for typechecking, generation, and dependency installation

Testing

• vp check --fix
• vp test run tests/create-vinext-app.test.ts tests/typegen.test.ts tests/init.test.ts
• vp run create-vinext-app#build

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@vinext/cloudflare@2768

npm i https://pkg.pr.new/create-vinext-app@2768

npm i https://pkg.pr.new/@vinext/types@2768

npm i https://pkg.pr.new/vinext@2768

commit: ebd7fe5

[github-actions]

Example	Preview	Production	Original
app-router-cloudflare	preview	production
pages-router-cloudflare	preview	production
app-router-playground	preview	production	original
realworld-api-rest	preview	production
nextra-docs-template	preview	production
benchmarks	preview	production
hackernews	preview	production	original
workers-cache	preview	production
web	preview	production

[github-actions]

Performance benchmarks

Compared ebd7fe5 against base 1607104 using alternating same-runner rounds. Next.js was unchanged and skipped.

0 improved · 0 regressed · 6 within ±1.5%

Scenario	Framework	Baseline	Current	Change
Client bundle size (gzip)	vinext	134.5 KB	134.5 KB	⚫ 0.0%
Client entry size (gzip)	vinext	122.1 KB	122.1 KB	⚫ -0.0%
Dev server cold start	vinext	2.98 s	2.96 s	⚫ -0.6%
Production build time	vinext	3.14 s	3.15 s	⚫ +0.3%
RSC entry closure size (gzip)	vinext	111.9 KB	111.9 KB	⚫ +0.0%
Server bundle size (gzip)	vinext	189.6 KB	189.6 KB	⚫ -0.0%

View detailed results and traces

_{🟢 improvement · 🔴 regression · ⚫ change below 1.5% · paired base/head}