feat: Update UI for Jobs and enhanced Materials

Navigation:
- Rename Projects to Jobs in NavMenu
- Add new icon for multi-material boxes

Home page:
- Update references from Projects to Jobs

Materials pages:
- Add Type and Grade columns to index
- Shape-specific dimension editing with typed inputs
- Error handling with detailed messages

Stock pages:
- Show Shape, Type, Grade, Size columns
- Display QuantityOnHand with badges

Shared components:
- LengthInput: Add nullable binding mode for optional dimensions
- LengthInput: Format on blur for better UX
- CutListReport: Update for Job model references

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CutList.Web/Components/Pages/Tools/Index.razor

@@ -1,5 +1,5 @@
 @page "/tools"
-@inject ProjectService ProjectService
+@inject JobService JobService
 @using CutList.Core.Formatting
 
 <PageTitle>Cutting Tools</PageTitle>
@@ -122,7 +122,7 @@ else
 
     protected override async Task OnInitializedAsync()
     {
-        tools = await ProjectService.GetCuttingToolsAsync();
+        tools = await JobService.GetCuttingToolsAsync();
         loading = false;
     }
 
@@ -177,14 +177,14 @@ else
 
             if (editingTool == null)
             {
-                await ProjectService.CreateCuttingToolAsync(formTool);
+                await JobService.CreateCuttingToolAsync(formTool);
             }
             else
             {
-                await ProjectService.UpdateCuttingToolAsync(formTool);
+                await JobService.UpdateCuttingToolAsync(formTool);
             }
 
-            tools = await ProjectService.GetCuttingToolsAsync();
+            tools = await JobService.GetCuttingToolsAsync();
             showForm = false;
             editingTool = null;
         }
@@ -205,8 +205,8 @@ else
     {
         if (toolToDelete != null)
         {
-            await ProjectService.DeleteCuttingToolAsync(toolToDelete.Id);
-            tools = await ProjectService.GetCuttingToolsAsync();
+            await JobService.DeleteCuttingToolAsync(toolToDelete.Id);
+            tools = await JobService.GetCuttingToolsAsync();
         }
     }