fix: persist CPNP No. across refreshes by saving as 'edited' and restoring in merge

- saveRowToSupabase now accepts optional status param (default 'pending')
- CosmeticItemsView saves CPNP with status 'edited' so resetAllPendingRows
  does not affect it and it survives the startup merge
- Re-added CPNP_NO to editableColumns so the merge restores it from Supabase

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

src/lib/supabase.ts

@@ -72,7 +72,7 @@ export async function getAllSyncedRows(): Promise<Record<string, SyncedRow>> {
   }
 }
 
-export async function saveRowToSupabase(articleNo: string, rowData: ExcelRow): Promise<{ success: boolean; error?: string }> {
+export async function saveRowToSupabase(articleNo: string, rowData: ExcelRow, status: 'pending' | 'edited' | 'synced' = 'pending'): Promise<{ success: boolean; error?: string }> {
   try {
     const response = await safeFetch(
       `${SUPABASE_URL}/rest/v1/products`,
@@ -85,7 +85,7 @@ export async function saveRowToSupabase(articleNo: string, rowData: ExcelRow): P
         body: JSON.stringify({
           product_id: articleNo,
           data: rowData,
-          status: 'pending',
+          status,
           updated_at: new Date().toISOString()
         })
       }