Update order-search-filter.lua

Motivation
Prevent deleted work orders from being reinserted into the filtered snapshot while a search filter is active, which could lead to UI actions on stale entries and crashes.

Description
Track the IDs of the last filtered set in self.last_filtered_ids and compute the current live orders IDs each filter application.
When previously-visible orders are missing from the live list, prune those IDs out of self.unfiltered_orders so deleted orders are not re-added.
Reset self.last_filtered_ids when restoring the full, unfiltered list in restore_orders.

Author: unboundlopez

order-search-filter.lua

@@ -169,6 +169,7 @@ function OrderSearchFilter:restore_orders()
     end
     self:rebuild_orders(self.unfiltered_orders)
     self.unfiltered_orders = nil
+    self.last_filtered_ids = nil
 end
 
 function OrderSearchFilter:apply_filter(filter)
@@ -180,13 +181,38 @@ function OrderSearchFilter:apply_filter(filter)
         self.unfiltered_orders = self:snapshot_orders()
     end
     local filter_lc = filter:lower()
+    local current_ids = {}
+    for _, order in ipairs(orders) do
+        current_ids[order.id] = true
+    end
+    if self.last_filtered_ids then
+        local deleted_ids = {}
+        for id in pairs(self.last_filtered_ids) do
+            if not current_ids[id] then
+                deleted_ids[id] = true
+            end
+        end
+        if next(deleted_ids) then
+            local cleaned = {}
+            for _, order in ipairs(self.unfiltered_orders) do
+                if not deleted_ids[order.id] then
+                    table.insert(cleaned, order)
+                end
+            end
+            self.unfiltered_orders = cleaned
+        end
+    end
     local filtered = {}
     for _, order in ipairs(self.unfiltered_orders) do
         if order_matches(filter_lc, order) then
             table.insert(filtered, order)
         end
     end
     self:rebuild_orders(filtered)
+    self.last_filtered_ids = {}
+    for _, order in ipairs(filtered) do
+        self.last_filtered_ids[order.id] = true
+    end
 end
 
 function OrderSearchFilter:on_filter_change(text)