Sync print weight and time parameters

README.md

@@ -98,6 +98,13 @@ BMB-<first-12-sha1-chars>
 
 This means repeat prints of the same file/name reuse the same `Part` and create new `StockItem` rows. To change matching behavior later, edit `PART_KEY_FIELDS`.
 
+## InvenTree Part Parameters
+
+For each synced `Part`, the service updates these InvenTree parameters when matching parameter templates exist:
+
+- `Weight`: filament weight per printed item in grams. If a Bambuddy archive has `quantity=2`, the total filament weight is divided by 2.
+- `PrintTime`: print duration from Bambuddy. The visible value is formatted as `1h 6m 1s`; `data_numeric` stores the duration in seconds.
+
 ## Useful Endpoints
 
 ```text