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/Layout/NavMenu.razor

@@ -14,8 +14,8 @@
             </NavLink>
         </div>
         <div class="nav-item px-3">
-            <NavLink class="nav-link" href="projects">
-                <span class="bi bi-list-check-nav-menu" aria-hidden="true"></span> Projects
+            <NavLink class="nav-link" href="jobs">
+                <span class="bi bi-list-check-nav-menu" aria-hidden="true"></span> Jobs
             </NavLink>
         </div>
         <div class="nav-item px-3">