stock: add BOM component add page with autocomplete

- add_component.php: find component by title and store BOM xref; redirect
  to component_order.php on success, or edit_component.php (title pre-filled)
  if component not found
- add_component.tpl: form with datalist autocomplete via lookup_component.php
- includes/lookup_component.php: JSON endpoint for component title search
- edit_component.php: pre-fill title from request for new components
- view_xref_bom_group.tpl: add button now goes to add_component.php

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

1 files changed, 38 insertions, 0 deletions

diff --git a/includes/lookup_component.php b/includes/lookup_component.php
new file mode 100644
index 0000000..18d47a6
--- /dev/null
+++ b/includes/lookup_component.php
@@ -0,0 +1,38 @@
+<?php
+/**
+ * JSON autocomplete endpoint — returns component titles matching ?q=
+ * Used by add_component.tpl datalist.
+ *
+ * @package stock
+ */
+
+namespace Bitweaver\Stock;
+
+require_once '../../kernel/includes/setup_inc.php';
+
+global $gBitDb, $gBitUser;
+
+if( !$gBitUser->hasPermission( 'p_stock_view' ) ) {
+	header( 'Content-Type: application/json' );
+	echo '[]';
+	exit;
+}
+
+$q = trim( $_GET['q'] ?? '' );
+if( strlen( $q ) < 2 ) {
+	header( 'Content-Type: application/json' );
+	echo '[]';
+	exit;
+}
+
+$rows = $gBitDb->getArray(
+	"SELECT FIRST 30 lc.content_id, lc.title
+	 FROM liberty_content lc
+	 WHERE lc.content_type_guid=? AND LOWER(lc.title) LIKE ?
+	 ORDER BY lc.title",
+	[ 'stockcomponent', '%'.strtolower( $q ).'%' ]
+);
+
+header( 'Content-Type: application/json' );
+echo json_encode( array_values( $rows ?? [] ) );
+exit;