Initial commit: Bun · Hono · React SPA · Postgres/Drizzle template

The starting point for an app with a React frontend. Same server, env,
database and API skeleton as template-htmx — the two differ only in what is
served at / — with a React 19 SPA, Tailwind v4 and shadcn/ui on top.

Carried from a working project rather than designed in the abstract, and
carrying the lessons that cost it time:

- The dev script states NODE_ENV=development rather than inheriting it. React
  resolves its runtime against NODE_ENV: Bun emits jsxDEV() in development
  and React's production jsx-dev-runtime defines jsxDEV as void 0. Inherit
  production while transforming for development and the app dies at first
  paint. Verified: the dev bundle resolves the development runtime and
  contains no void-0 stub.
- Asset URLs in components are relative and <base href="/"> is in the HTML,
  so a path-prefix proxy can rewrite one attribute and every asset follows. A
  test enforces it.
- Routing is in the hash, because the app may be mounted under a prefix it
  only learns at runtime and a hash means the same thing at either mount.
- index.html holds __PUBLIC_URL__ and gen-index.ts substitutes it, because
  Bun's HTML bundler fails the build on a root-relative favicon href.
- APP_ENV failing closed, env files before the ambient environment, the
  database enforced by name, one Postgres client per process — as in the
  htmx template.

The database has no tables. The App is a shell with one tab and no features,
named as a placeholder. Renaming `app` is the first step and the README lists
every place it appears.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

components.json

@@ -0,0 +1,21 @@
+{
+  "$schema": "https://ui.shadcn.com/schema.json",
+  "style": "new-york",
+  "rsc": false,
+  "tsx": true,
+  "tailwind": {
+    "config": "",
+    "css": "src/apps/frontend/globals.css",
+    "baseColor": "neutral",
+    "cssVariables": true,
+    "prefix": ""
+  },
+  "aliases": {
+    "components": "@/components",
+    "utils": "@/lib/utils",
+    "ui": "@/components/ui",
+    "lib": "@/lib",
+    "hooks": "@/hooks"
+  },
+  "iconLibrary": "lucide"
+}