Initial commit: Lookbook personal collection app

Pinterest-like app for saving images, videos, quotes, and embeds.

Features:
- Go backend with PostgreSQL, SSR templates
- Console-based admin auth (login/logout via browser console)
- Item types: images, videos (ffmpeg transcoding), quotes, embeds
- Media stored as BLOBs in PostgreSQL
- OpenGraph metadata extraction for links
- Embed detection for YouTube, Vimeo, Twitter/X
- Masonry grid layout, item detail pages
- Tag system with filtering
- Refresh metadata endpoint with change warnings
- Replace media endpoint for updating item images/videos

internal/static/static.go

@@ -0,0 +1,43 @@
+package static
+
+import (
+	"crypto/sha256"
+	"embed"
+	"encoding/hex"
+	"net/http"
+	"strings"
+	"time"
+)
+
+//go:embed css/* js/* fonts/*
+var staticFS embed.FS
+
+// Version is set via -ldflags in production
+var Version string
+
+func init() {
+	if Version == "" {
+		h := sha256.Sum256([]byte(time.Now().String()))
+		Version = hex.EncodeToString(h[:4])
+	}
+}
+
+func VersionedPath(path string) string {
+	return "/static/" + Version + "/" + path
+}
+
+func Handler() http.Handler {
+	fileServer := http.FileServer(http.FS(staticFS))
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// Strip version prefix: /static/{version}/file.css -> /file.css
+		path := r.URL.Path
+		path = strings.TrimPrefix(path, "/static/")
+		if idx := strings.Index(path, "/"); idx != -1 {
+			path = path[idx:]
+		}
+		r.URL.Path = path
+
+		w.Header().Set("Cache-Control", "public, max-age=31536000, immutable")
+		fileServer.ServeHTTP(w, r)
+	})
+}