chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase

src/importers/SmartCSVImporter.ts

@@ -164,7 +164,9 @@ export class SmartCSVImporter {
       relatedColumn: 'related|see also|links|references',
       csvDelimiter: undefined as string | undefined,
       csvHeaders: true,
-      onProgress: () => {},
+      // Annotated with the full callback signature so the merged opts type has
+      // a single callable shape (the no-op default narrowed the union).
+      onProgress: (() => {}) as NonNullable<SmartCSVOptions['onProgress']>,
       ...options
     }
 
@@ -379,7 +381,7 @@ export class SmartCSVImporter {
         throughput: Math.round(rowsPerSecond * 10) / 10,
         eta: Math.round(estimatedTimeRemaining),
         phase: 'extracting'
-      } as any)
+      })
     }
 
     return {