stock: PCK/SHT fractional display, movement qty summing, import qty type

Display fixes:
- list_stock, list_movements, view_component: PCK stock divides by
  pack_size for fractional strip display; SHT shows 2 decimal places
- list_movements: pack_size fetched per component for PCK display
- All fractional formats use %.2f consistently

StockMovement::getList component filter:
- Replace INNER JOIN on xcmp with EXISTS subquery to avoid duplicate
  rows when a component appears multiple times in a movement BOM
- cmp_qty now SUMs all matching xref rows so multi-assembly RQs
  show total quantity rather than silently dropping duplicate rows

Movement BOM edit templates:
- stockmovement/edit_xref_bom_item.tpl: proper edit form for SGL/SHT/VOL
  lines linking back to view_component
- stockmovement/edit_xref_bompck_item.tpl: same for PCK with pack size hint

Import:
- ImportSimpleComponent: columns 6/7 (qty_type, qty_value) wired up;
  PCK/SHT/VOL writes qty xref so movement CSV imports pick up default type

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/view_component.php b/view_component.php
index 82f7c18..2940441 100755
--- a/view_component.php
+++ b/view_component.php
@@ -59,7 +59,13 @@ if( $gContent->isValid() ) {
 	foreach( $rows as $row ) {
 		$stockLevels[$row['qty_type']] = (float)$row['stock_level'];
 	}
+	$ps = $gBitDb->getOne(
+		"SELECT CAST(x.`xkey` AS DOUBLE PRECISION) FROM `".BIT_DB_PREFIX."liberty_xref` x
+		 WHERE x.`content_id` = ? AND x.`item` = 'PCK'",
+		[ $gContent->mContentId ]
+	);
 	$gBitSmarty->assign( 'componentStockLevels', $stockLevels );
+	$gBitSmarty->assign( 'packSize', $ps ? (float)$ps : null );
 }
 
 require_once STOCK_PKG_INCLUDE_PATH.'display_stock_component_inc.php';