Drop NODE_ENV for explicit config toggles (todo §0.1); app is environment-agnostic

src/server.ts

@@ -1,10 +1,10 @@
 import { createApp } from "./app.ts";
 import { loadConfig } from "./config.ts";
 
-const { port } = loadConfig(); // validates the env (incl. prod secrets) — fails loud at boot
+const config = loadConfig(); // validates the env (incl. enforced secrets) — fails loud at boot
 
-const server = createApp().listen(port, () => {
-  console.log(`Listening on http://localhost:${port}`);
+const server = createApp({ cache: config.cacheTemplates }).listen(config.port, () => {
+  console.log(`Listening on http://localhost:${config.port}`);
 });
 
 // Drain in-flight requests on container stop instead of cutting them mid-response.