Add roadmap and deployment examples

internal/db/items.go

@@ -368,19 +368,47 @@ func (r *ItemRepository) GetRevisions(ctx context.Context, itemID string) ([]*Re
 
 // GetRevision retrieves a specific revision by item ID and revision number.
 func (r *ItemRepository) GetRevision(ctx context.Context, itemID string, revisionNumber int) (*Revision, error) {
+	// Check if status column exists (migration 007 applied)
+	var hasStatusColumn bool
+	err := r.db.pool.QueryRow(ctx, `
+		SELECT EXISTS (
+			SELECT 1 FROM information_schema.columns
+			WHERE table_name = 'revisions' AND column_name = 'status'
+		)
+	`).Scan(&hasStatusColumn)
+	if err != nil {
+		return nil, fmt.Errorf("checking schema: %w", err)
+	}
+
 	rev := &Revision{}
 	var propsJSON []byte
-	err := r.db.pool.QueryRow(ctx, `
-		SELECT id, item_id, revision_number, properties, file_key, file_version,
-		       file_checksum, file_size, thumbnail_key, created_at, created_by, comment,
-		       COALESCE(status, 'draft') as status, COALESCE(labels, '{}') as labels
-		FROM revisions
-		WHERE item_id = $1 AND revision_number = $2
-	`, itemID, revisionNumber).Scan(
-		&rev.ID, &rev.ItemID, &rev.RevisionNumber, &propsJSON, &rev.FileKey, &rev.FileVersion,
-		&rev.FileChecksum, &rev.FileSize, &rev.ThumbnailKey, &rev.CreatedAt, &rev.CreatedBy, &rev.Comment,
-		&rev.Status, &rev.Labels,
-	)
+
+	if hasStatusColumn {
+		err = r.db.pool.QueryRow(ctx, `
+			SELECT id, item_id, revision_number, properties, file_key, file_version,
+			       file_checksum, file_size, thumbnail_key, created_at, created_by, comment,
+			       COALESCE(status, 'draft') as status, COALESCE(labels, ARRAY[]::TEXT[]) as labels
+			FROM revisions
+			WHERE item_id = $1 AND revision_number = $2
+		`, itemID, revisionNumber).Scan(
+			&rev.ID, &rev.ItemID, &rev.RevisionNumber, &propsJSON, &rev.FileKey, &rev.FileVersion,
+			&rev.FileChecksum, &rev.FileSize, &rev.ThumbnailKey, &rev.CreatedAt, &rev.CreatedBy, &rev.Comment,
+			&rev.Status, &rev.Labels,
+		)
+	} else {
+		err = r.db.pool.QueryRow(ctx, `
+			SELECT id, item_id, revision_number, properties, file_key, file_version,
+			       file_checksum, file_size, thumbnail_key, created_at, created_by, comment
+			FROM revisions
+			WHERE item_id = $1 AND revision_number = $2
+		`, itemID, revisionNumber).Scan(
+			&rev.ID, &rev.ItemID, &rev.RevisionNumber, &propsJSON, &rev.FileKey, &rev.FileVersion,
+			&rev.FileChecksum, &rev.FileSize, &rev.ThumbnailKey, &rev.CreatedAt, &rev.CreatedBy, &rev.Comment,
+		)
+		rev.Status = "draft"
+		rev.Labels = []string{}
+	}
+
 	if err == pgx.ErrNoRows {
 		return nil, nil
 	}