[3m1n3nc3]

Summary

Follow-ups to #23 that bring Fastify level with Express and H3.

Inertia

• @arkstack/driver-fastify/middlewares exports inertia(). It runs the rest of the request inside Inertia's context and upgrades 302 redirects to 303 for Inertia PUT, PATCH and DELETE visits.
• create-arkstack no longer blocks Inertia for the Fastify template. Its existing setup step wires the middleware and the root route without changes.

Lean profile

• Lean Fastify projects crashed on start. The template built its CORS options in the Application constructor, before the env global exists. Plugin options can now be a function that Fastify calls when it loads the plugin, and the template uses that.
• The Fastify router skips route files that don't exist, so lean projects no longer log an error about the missing api.ts. A file that fails to load is still logged.
• The template's middleware config now type-checks (req was implicitly any).

Docs

• Fastify is marked Stable.
• The Inertia guide has a Fastify tab, and the Fastify guide no longer says Inertia is unavailable.
• The getting-started guide, the API page and the roadmap described express-lean and h3-lean as template aliases, but those aliases were removed. They now describe lean and full as profiles of every template, chosen at the prompt or with --lean or --full.

Testing

• packages/driver-fastify: 44 tests pass, including new ones for the Inertia middleware, function plugin options and missing or broken route files.
• create-arkstack and packages/inertia tests pass, and lint is clean.
• I built and started a lean Fastify project made with makeLeanProfile. It serves / and answers CORS preflights with the configured origin.
• I scaffolded a full Fastify project with applyInertia(…, 'vue'), built it and started it. / returns the Inertia page object for X-Inertia requests and the HTML document otherwise.

[codecov]

Codecov Report

❌ Patch coverage is 92.00000% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
packages/driver-fastify/src/middlewares/inertia.ts	88.23%	2 Missing ⚠️

📢 Thoughts on this report? Let us know!