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

vendor/github.com/pressly/goose/v3/reset.go

@@ -0,0 +1,64 @@
+package goose
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"sort"
+)
+
+// Reset rolls back all migrations
+func Reset(db *sql.DB, dir string, opts ...OptionsFunc) error {
+	ctx := context.Background()
+	return ResetContext(ctx, db, dir, opts...)
+}
+
+// ResetContext rolls back all migrations
+func ResetContext(ctx context.Context, db *sql.DB, dir string, opts ...OptionsFunc) error {
+	option := &options{}
+	for _, f := range opts {
+		f(option)
+	}
+	migrations, err := CollectMigrations(dir, minVersion, maxVersion)
+	if err != nil {
+		return fmt.Errorf("failed to collect migrations: %w", err)
+	}
+	if option.noVersioning {
+		return DownToContext(ctx, db, dir, minVersion, opts...)
+	}
+
+	statuses, err := dbMigrationsStatus(ctx, db)
+	if err != nil {
+		return fmt.Errorf("failed to get status of migrations: %w", err)
+	}
+	sort.Sort(sort.Reverse(migrations))
+
+	for _, migration := range migrations {
+		if !statuses[migration.Version] {
+			continue
+		}
+		if err = migration.DownContext(ctx, db); err != nil {
+			return fmt.Errorf("failed to db-down: %w", err)
+		}
+	}
+
+	return nil
+}
+
+func dbMigrationsStatus(ctx context.Context, db *sql.DB) (map[int64]bool, error) {
+	dbMigrations, err := store.ListMigrations(ctx, db, TableName())
+	if err != nil {
+		return nil, err
+	}
+	// The most recent record for each migration specifies
+	// whether it has been applied or rolled back.
+	results := make(map[int64]bool)
+
+	for _, m := range dbMigrations {
+		if _, ok := results[m.VersionID]; ok {
+			continue
+		}
+		results[m.VersionID] = m.IsApplied
+	}
+	return results, nil
+}