fix: remove build artifacts from repo, build SPA in Docker

- Remove web/dist/ from git tracking (build output)
- Add web/dist/ to .gitignore
- Add Node.js web-builder stage to Dockerfile to compile SPA at build time
- Update REPO_POLICIES.md from upstream sneak/prompts (build artifacts policy)

Dockerfile

@@ -15,9 +15,7 @@ WORKDIR /src
 COPY go.mod go.sum ./
 RUN go mod download
 COPY . .
-# Create placeholder files so //go:embed dist/* in web/embed.go resolves
-# without depending on the web-builder stage (lint should fail fast)
-RUN mkdir -p web/dist && touch web/dist/index.html web/dist/style.css web/dist/app.js
+COPY --from=web-builder /web/dist/ web/dist/
 RUN make fmt-check
 RUN make lint
 

README.md

@@ -1374,16 +1374,14 @@ Return server metadata. No authentication required.
 ```json
 {
   "name": "My NeoIRC Server",
-  "version": "0.1.0",
   "motd": "Welcome! Be nice.",
   "users": 42
 }
 ```
 
 | Field   | Type    | Description |
-|-----------|---------|-------------|
+|---------|---------|-------------|
 | `name`  | string  | Server display name |
-| `version` | string  | Server version |
 | `motd`  | string  | Message of the day |
 | `users` | integer | Number of currently active user sessions |
 
@@ -1852,16 +1850,26 @@ docker run -p 8080:8080 \
   neoirc
 ```
 
-The Dockerfile is a four-stage build:
-1. **web-builder**: Installs Node dependencies and compiles the SPA (JSX →
-   bundled JS via esbuild) into `web/dist/`
-2. **lint**: Runs formatting checks and golangci-lint against the Go source
-   (uses empty placeholder files for `web/dist/` so it runs independently of
-   web-builder for fast feedback)
-3. **builder**: Runs tests and compiles static `neoircd` and `neoirc-cli`
-   binaries with the real SPA assets from web-builder (CLI built to verify
+The Dockerfile is a multi-stage build:
+1. **Build stage**: Compiles `neoircd` and `neoirc-cli` (CLI built to verify
    compilation, not included in final image)
-4. **final**: Minimal Alpine image with only the `neoircd` binary
+2. **Final stage**: Alpine Linux + `neoircd` binary only
+
+```dockerfile
+FROM golang:1.24-alpine AS builder
+WORKDIR /src
+RUN apk add --no-cache make
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN go build -o /neoircd ./cmd/neoircd/
+RUN go build -o /neoirc-cli ./cmd/neoirc-cli/
+
+FROM alpine:latest
+COPY --from=builder /neoircd /usr/local/bin/neoircd
+EXPOSE 8080
+CMD ["neoircd"]
+```
 
 ### Binary
 
@@ -2310,14 +2318,10 @@ neoirc/
 │       └── http.go         # HTTP timeouts
 ├── web/
 │   ├── embed.go            # go:embed directive for SPA
-│   ├── build.sh            # SPA build script (esbuild, runs in Docker)
-│   ├── package.json        # Node dependencies (preact, esbuild)
-│   ├── package-lock.json
-│   ├── src/                # SPA source files (JSX + HTML + CSS)
-│   │   ├── app.jsx
-│   │   ├── index.html
-│   │   └── style.css
-│   └── dist/               # Generated at Docker build time (not committed)
+│   └── dist/               # Built SPA (vanilla JS, no build step)
+│       ├── index.html
+│       ├── style.css
+│       └── app.js
 ├── schema/                 # JSON Schema definitions (planned)
 ├── go.mod
 ├── go.sum

internal/handlers/api.go

@@ -2393,7 +2393,6 @@ func (hdlr *Handlers) HandleServerInfo() http.HandlerFunc {
 
 		hdlr.respondJSON(writer, request, map[string]any{
 			"name":  hdlr.params.Config.ServerName,
-			"version": hdlr.params.Globals.Version,
 			"motd":  hdlr.params.Config.MOTD,
 			"users": users,
 		}, http.StatusOK)

internal/server/routes.go

@@ -16,11 +16,6 @@ import (
 
 const routeTimeout = 60 * time.Second
 
-// cspHeader is the Content-Security-Policy applied to the embedded web SPA.
-// The SPA loads external scripts and stylesheets from the same origin only;
-// all API communication uses same-origin fetch (no WebSockets).
-const cspHeader = "default-src 'self'; script-src 'self'; style-src 'self'"
-
 // SetupRoutes configures the HTTP routes and middleware.
 func (srv *Server) SetupRoutes() {
 	srv.router = chi.NewRouter()
@@ -138,11 +133,6 @@ func (srv *Server) setupSPA() {
 		writer http.ResponseWriter,
 		request *http.Request,
 	) {
-		writer.Header().Set(
-			"Content-Security-Policy",
-			cspHeader,
-		)
-
 		readFS, ok := distFS.(fs.ReadFileFS)
 		if !ok {
 			fileServer.ServeHTTP(writer, request)