fix: restore CPNP No. as Excel-resolved column, not virtual

CPNP_NO re-added to COLUMN_PATTERNS so resolveColumnIndices maps it to
the real Excel column index. Removed it from VIRTUAL_COLS and editableColumns
in App.tsx since data comes from the spreadsheet, not Supabase-only storage.

Co-Authored-By: claude-flow <ruv@ruv.net>

src/types.ts

@@ -82,7 +82,7 @@ export const COLUMN_PATTERNS: Record<keyof typeof COLUMNS, string[]> = {
   ITEM_TO_LOGISTIC: ['item', 'logistic'],
   ANNA_CHECK: ['anna', 'check'],
   ANNA_NOTE: ['anna', 'note'],
-  CPNP_NO: [],
+  CPNP_NO: ['cpnp'],
   // Virtual/Extra columns stay hardcoded and are NOT auto-detected from headers
   // to prevent internal data from being shifted or overwritten by Excel column shifts.
 };