Apply mechanical lint fixes for golangci-lint v2.12.2 rollout

Auto-remediate style-only findings (wsl_v5, nlreturn, noinlineerr,
modernize, intrange, perfsprint, usetesting, unconvert, errorlint,
gocritic, testifylint) and rename printf-style helpers to f-suffixed
names (goprintffuncname): ui.Writer message methods, cli.ReportErrorf,
database.Fatalf, vaultik stdoutf.

internal/database/chunks.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
+	"strings"
 
 	"sneak.berlin/go/vaultik/internal/log"
 )
@@ -54,6 +55,7 @@ func (r *ChunkRepository) GetByHash(ctx context.Context, hash string) (*Chunk, e
 	if err == sql.ErrNoRows {
 		return nil, nil
 	}
+
 	if err != nil {
 		return nil, fmt.Errorf("querying chunk: %w", err)
 	}
@@ -71,14 +73,22 @@ func (r *ChunkRepository) GetByHashes(ctx context.Context, hashes []string) ([]*
 		FROM chunks
 		WHERE chunk_hash IN (`
 
-	args := make([]interface{}, len(hashes))
+	args := make([]any, len(hashes))
+
+	var querySb75 strings.Builder
+
 	for i, hash := range hashes {
 		if i > 0 {
-			query += ", "
+			querySb75.WriteString(", ")
 		}
-		query += "?"
+
+		querySb75.WriteString("?")
+
 		args[i] = hash
 	}
+
+	query += querySb75.String()
+
 	query += ") ORDER BY chunk_hash"
 
 	rows, err := r.db.conn.QueryContext(ctx, query, args...)
@@ -88,6 +98,7 @@ func (r *ChunkRepository) GetByHashes(ctx context.Context, hashes []string) ([]*
 	defer CloseRows(rows)
 
 	var chunks []*Chunk
+
 	for rows.Next() {
 		var chunk Chunk
 
@@ -122,6 +133,7 @@ func (r *ChunkRepository) ListUnpacked(ctx context.Context, limit int) ([]*Chunk
 	defer CloseRows(rows)
 
 	var chunks []*Chunk
+
 	for rows.Next() {
 		var chunk Chunk