AGENTS.md — atmmi-info-ui

Single Fresh 2 app on Deno (not a monorepo). Dashboard for ATM Milano transit info.

Commands

Command	Action
`deno task dev`	Vite dev server (URL in terminal; often port 5173)
`deno task build`	Production client + server bundle (`vite build`)
`deno task start`	Serve `_fresh/server.js` via `deno serve`
`deno task check`	`deno fmt --check`, `deno lint`, `deno check` on entrypoints
`deno task test`	`deno test -A` (parser + utils tests)
`deno install`	Populate `node_modules` for npm-specified packages (Preact, Vite plugins, etc.)

CI: deno install → deno task check → deno task test (no production build in CI).

Fresh 2 (jsr:@fresh/core) with main.ts + app.fsRoutes(), Preact JSX, @fresh/plugin-vite + Vite 7.
Vanilla CSS in assets/styles.css (design tokens as :root variables, nesting; no Tailwind/DaisyUI).
Deno fmt/lint (tabs, line width in deno.json). No Biome / npm scripts.
nodeModulesDir: "manual" — run deno install after clone or dependency changes.

Entry: main.ts → static files + file routes.
Layout: routes/_app.tsx — <html lang="it-IT">, meta, favicon.
Home: routes/index.tsx — server-loads dashboard data via lib/dashboard_data.ts, renders Header, Dashboard, Footer.
API: routes/api/*.tsx — JSON handlers mirroring old Nuxt server/api/ paths.
Upstream HTTP: lib/atm_fetch.ts uses Deno.createHttpClient({ tlsOptions: { insecure: true } }) for www.atm.it and giromilano.atm.it (legacy TLS). Surface alerts use default fetch to alert.atm.it.
HTML parsing: happy-dom in lib/parser.ts and data modules (same approach as Nuxt server).
Types: types/line.ts (ScrapedLineStatus, MetroLineStatusV2), types/news.ts.

No root tsconfig.json (Vite + deno.json own TS settings). Do not reintroduce Nuxt’s .nuxt/tsconfig extends.
TSX files that render JSX start with import "preact/jsx-runtime"; so deno check resolves Fresh’s jsx: "precompile" emit cleanly.

.vscode/settings.json: tab size 2, format on save. Install the Deno extension and enable the workspace if prompted.