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/handlers/templates.go

@@ -0,0 +1,17 @@
+package handlers
+
+import (
+	"html/template"
+
+	"lookbook/internal/static"
+)
+
+var TemplateFuncs = template.FuncMap{
+	"staticURL": static.VersionedPath,
+	"safeHTML": func(s *string) template.HTML {
+		if s == nil {
+			return ""
+		}
+		return template.HTML(*s)
+	},
+}