refactor: wrap bare errors with context in database package

internal/database/database.go

@@ -60,7 +60,10 @@ func RunMigrations(sqlDB *sql.DB) error {
 }
 func RunMigrationsAndFixes(sqlDB *sql.DB) error {
 	if err := RunMigrations(sqlDB); err != nil {
-		return err
+		return fmt.Errorf("run migrations: %w", err)
 	}
-	return RunDataFixes(sqlDB)
+	if err := RunDataFixes(sqlDB); err != nil {
+		return fmt.Errorf("run data fixes: %w", err)
+	}
+	return nil
 }

internal/database/fixes.go

@@ -21,12 +21,12 @@ func RunDataFixes(sqlDB *sql.DB) error {
 	}
 
 	if err := ensureDataFixTable(ctx, sqlDB); err != nil {
-		return err
+		return fmt.Errorf("ensure data fix table: %w", err)
 	}
 
 	applied, err := loadAppliedFixes(ctx, sqlDB)
 	if err != nil {
-		return err
+		return fmt.Errorf("load applied data fixes: %w", err)
 	}
 
 	for _, fix := range fixes {
@@ -46,7 +46,7 @@ func RunDataFixes(sqlDB *sql.DB) error {
 			return fmt.Errorf("data fix %s failed: %w", fix.ID, err)
 		}
 		if err := markFixApplied(ctx, sqlDB, fix.ID); err != nil {
-			return err
+			return fmt.Errorf("mark data fix %s applied: %w", fix.ID, err)
 		}
 	}
 

internal/database/fixes/20260528_backfill_avatar_url.go

@@ -13,7 +13,7 @@ func init() {
 		Apply: func(ctx context.Context, sqlDB *sql.DB) error {
 			rows, err := sqlDB.QueryContext(ctx, `SELECT id, username FROM user WHERE avatar_url = ''`)
 			if err != nil {
-				return err
+				return fmt.Errorf("query users missing avatar_url: %w", err)
 			}
 			defer func() { _ = rows.Close() }()
 
@@ -25,12 +25,12 @@ func init() {
 			for rows.Next() {
 				var r userRow
 				if err := rows.Scan(&r.id, &r.username); err != nil {
-					return err
+					return fmt.Errorf("scan user missing avatar_url: %w", err)
 				}
 				toUpdate = append(toUpdate, r)
 			}
 			if err := rows.Err(); err != nil {
-				return err
+				return fmt.Errorf("iterate users missing avatar_url: %w", err)
 			}
 
 			for _, u := range toUpdate {

internal/database/fixes/20260608_backfill_anime_duration_seconds.go

@@ -25,7 +25,7 @@ func init() {
 func applyAnimeDurationSecondsBackfill(ctx context.Context, sqlDB *sql.DB) error {
 	toUpdate, err := listAnimeMissingDurationSeconds(ctx, sqlDB)
 	if err != nil {
-		return err
+		return fmt.Errorf("list anime missing duration_seconds: %w", err)
 	}
 
 	client := jikan.NewClient(config.Config{}, db.New(sqlDB), observability.NewMetrics())