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/jackc/pgx/v5/pgxpool/batch_results.go

@@ -0,0 +1,52 @@
+package pgxpool
+
+import (
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+type errBatchResults struct {
+	err error
+}
+
+func (br errBatchResults) Exec() (pgconn.CommandTag, error) {
+	return pgconn.CommandTag{}, br.err
+}
+
+func (br errBatchResults) Query() (pgx.Rows, error) {
+	return errRows{err: br.err}, br.err
+}
+
+func (br errBatchResults) QueryRow() pgx.Row {
+	return errRow{err: br.err}
+}
+
+func (br errBatchResults) Close() error {
+	return br.err
+}
+
+type poolBatchResults struct {
+	br pgx.BatchResults
+	c  *Conn
+}
+
+func (br *poolBatchResults) Exec() (pgconn.CommandTag, error) {
+	return br.br.Exec()
+}
+
+func (br *poolBatchResults) Query() (pgx.Rows, error) {
+	return br.br.Query()
+}
+
+func (br *poolBatchResults) QueryRow() pgx.Row {
+	return br.br.QueryRow()
+}
+
+func (br *poolBatchResults) Close() error {
+	err := br.br.Close()
+	if br.c != nil {
+		br.c.Release()
+		br.c = nil
+	}
+	return err
+}