docs: README auf v4.2 aktualisiert

README.md

@@ -104,19 +104,22 @@ Available in:
 
 See [CHANGELOG.md](CHANGELOG.md) for detailed version history.
 
-### 3.8 (Current)
+### 4.2 (Current)
+- PDF attachments now properly linked to supplier invoices via ECM database
+- Most expensive item shown as invoice label in supplier invoice list
+
+### 4.0
+- Fixed nested HTML forms issue with supplier price selection
+- Unit price display instead of total price for supplier prices
+
+### 3.8
 - Improved cable pricing for different supplier formats (Sonepar vs Kluxen/Witte)
 - Automatic ring size detection from product names (Ri100, Tr500, etc.)
 - EAN auto-update from ZUGFeRD invoices with automatic barcode type detection
-- New extrafield "produktpreis" for material price without copper surcharge
-- Cross-catalog search now EAN-only (prevents mismatches)
 
 ### 3.7
 - GlobalNotify integration for import notifications
 
-### 3.6
-- Cron job stability fixes and dedicated logging
-
 ### 3.5
 - Automatic cron import from watch folder and IMAP