Name each embedded static file so a missing Alpine.js fails the build (closes #166)

static/static.go embedded the css and js directories, so a build without the extracted Alpine.js file compiled and produced a binary whose admin pages silently had no Alpine. It now names the four files the pages load, so such a build fails naming js/alpine.min.js; make build extracts the file first, so the failure shows when that step is skipped. Both lint stages extract Alpine.js before linting, since the static package no longer compiles without it, and the README's lint stage says so. static/css/input.css, the Tailwind source no page loads, is no longer embedded or served.

Model: opus-5-5

README.md

@@ -1348,7 +1348,9 @@ apply. The directory is `3p/` rather than `vendor/` because Go treats a root
 where `go:embed` picks it up. `script/test`, `make build` and `make dev` run
 it first, and the Dockerfile builds through `make test` and `make build`, so
 nothing downloads Alpine.js. The extracted file is not committed, and
-`.dockerignore` keeps any host copy out of the build context.
+`.dockerignore` keeps any host copy out of the build context. `static/static.go`
+names every file it embeds, so a build that skips the extraction, such as a
+bare `go build`, fails with an error naming `js/alpine.min.js`.
 
 To move to a new version: download
 `https://registry.npmjs.org/@alpinejs/csp/-/csp-<version>.tgz`, check it against
@@ -3379,8 +3381,9 @@ version is fixed independently of the compiler's:
 
 1. **Lint stage** (`golangci/golangci-lint:v2.12.2`, Debian-based) —
    installs `make`, downloads dependencies, copies the source, and runs
-   `make fmt-check`, then `golangci-lint config verify` and
-   `golangci-lint run`, both with `--network=none`.
+   `make fmt-check`, then `script/assets` to extract Alpine.js from
+   `3p/`, then `golangci-lint config verify` and `golangci-lint run`,
+   both with `--network=none`.
 2. **Builder stage** (`golang:1.26.1-bookworm`) — depends on the lint
    stage passing (it copies a file from it), runs `make test` and
    `make build` (both extract Alpine.js from `3p/` first), and finally