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

src/importers/handlers/excelHandler.ts

@@ -69,13 +69,14 @@ export class ExcelHandler extends BaseFormatHandler {
         const sheet = workbook.Sheets[sheetName]
         if (!sheet) continue
 
-        // Convert sheet to JSON with headers
-        const sheetData = XLSX.utils.sheet_to_json(sheet, {
+        // Convert sheet to JSON with headers. `header: 1` makes xlsx return
+        // rows as arrays of raw cell values, typed via the generic overload.
+        const sheetData = XLSX.utils.sheet_to_json<unknown[]>(sheet, {
           header: 1, // Get as array of arrays first
           defval: null,
           blankrows: false,
           raw: false // Convert to formatted strings
-        }) as any[][]
+        })
 
         if (sheetData.length === 0) continue
 

src/importers/handlers/pdfHandler.ts

@@ -70,8 +70,20 @@ export class PDFHandler extends BaseFormatHandler {
 
       const pdfDoc = await loadingTask.promise
 
-      // Extract metadata
+      // Extract metadata. pdfjs-dist types getMetadata().info as the bare
+      // `Object` type, so the well-known PDF document-information dictionary
+      // keys (PDF 32000-1:2008 §14.3.3) are surfaced via a structural type at
+      // this library boundary.
       const metadata = await pdfDoc.getMetadata()
+      const documentInfo = metadata.info as {
+        Title?: string
+        Author?: string
+        Subject?: string
+        Creator?: string
+        Producer?: string
+        CreationDate?: string
+        ModDate?: string
+      } | undefined
       const numPages = pdfDoc.numPages
 
       // Report document loaded
@@ -177,13 +189,13 @@ export class PDFHandler extends BaseFormatHandler {
             textLength: totalTextLength,
             tableCount: detectedTables,
             pdfMetadata: {
-              title: (metadata.info as any)?.Title || null,
-              author: (metadata.info as any)?.Author || null,
-              subject: (metadata.info as any)?.Subject || null,
-              creator: (metadata.info as any)?.Creator || null,
-              producer: (metadata.info as any)?.Producer || null,
-              creationDate: (metadata.info as any)?.CreationDate || null,
-              modificationDate: (metadata.info as any)?.ModDate || null
+              title: documentInfo?.Title || null,
+              author: documentInfo?.Author || null,
+              subject: documentInfo?.Subject || null,
+              creator: documentInfo?.Creator || null,
+              producer: documentInfo?.Producer || null,
+              creationDate: documentInfo?.CreationDate || null,
+              modificationDate: documentInfo?.ModDate || null
             }
           }
         ),