Initial lookbook implementation

Pinterest-style visual bookmarking app with:
- URL metadata extraction (OG/Twitter meta, oEmbed fallback)
- Image caching in Postgres with 480px thumbnails
- Multi-tag filtering with Ctrl/Cmd for OR mode
- Fuzzy tag suggestions and inline tag editing
- Browser console auth() with first-use password setup
- Brutalist UI with Commit Mono font and Pico CSS
- Light/dark mode via browser preference

Makefile

@@ -0,0 +1,26 @@
+APP := ./cmd/server
+VERSION := $(shell git rev-parse --short HEAD 2>/dev/null || echo "dev")
+LDFLAGS := -X git.soup.land/soup/lookbook/internal/static.Version=$(VERSION)
+
+.PHONY: dev run migrate rollback fmt test build
+
+dev:
+	hivemind
+
+run:
+	go run $(APP) web
+
+migrate:
+	go run $(APP) -migrate
+
+rollback:
+	go run $(APP) -rollback
+
+fmt:
+	go fmt ./...
+
+test:
+	go test -v ./...
+
+build:
+	CGO_ENABLED=0 go build -ldflags "$(LDFLAGS)" -o bin/lookbook $(APP)