Rename Object to FileUpload; use native Postgres $n placeholders.

internal/store/postgres.go

@@ -4,34 +4,12 @@ import (
 	"database/sql"
 	"fmt"
 	"net/url"
-	"strconv"
 	"strings"
 	"time"
 
 	_ "github.com/jackc/pgx/v5/stdlib"
 )
 
-// rebind converts ? placeholders to Postgres $1, $2, ... form.
-func rebind(query string) string {
-	n := 0
-	var b strings.Builder
-	for i := 0; i < len(query); i++ {
-		if query[i] == '?' {
-			n++
-			b.WriteByte('$')
-			b.WriteString(strconv.Itoa(n))
-			continue
-		}
-		b.WriteByte(query[i])
-	}
-	return b.String()
-}
-
-// q rebinds SQL placeholders for Postgres.
-func (s *Store) q(query string) string {
-	return rebind(query)
-}
-
 // applySchema runs semicolon-separated DDL statements, skipping PRAGMA lines.
 func applySchema(db *sql.DB, schema string) error {
 	for _, stmt := range strings.Split(schema, ";") {