Add inventory bin filter, print bin, mobile login fixes, and QR scan fix

- Inventory: location filter dropdown + Print Bin page (line #, name, color, SKU)
- Fix: Prismatic Powders QR scan now extracts manufacturer/SKU/color from URL path
  and uses full LookupAsync pipeline instead of relying on page fetch alone
- Fix: iOS Safari 'Login / data Zero KB' download -- add OnRejected HTML response to rate limiter
- Fix: mobile session logout -- ConfigureApplicationCookie with 30-day MaxAge persistent cookie
- Help: new 'Location Filtering & Bin Print' section in Inventory help article
- Help: HelpKnowledgeBase updated with bin filter and print bin details

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

src/PowderCoating.Web/Helpers/HelpKnowledgeBase.cs

@@ -301,7 +301,18 @@ public static class HelpKnowledgeBase
 
         **Time Entries:** Track labor time on a job from the Details page.
 
-        **Rework:** If a job needs to be redone, a rework record can be created from the Details page. Tracks rework type, reason, and resolution.
+        **Rework / Redo:** Rework and redo mean the same thing in this system. If a finished part fails QA or a customer brings it back damaged, open the original job's Details page and use the **Rework Log** section to record it.
+
+        Each rework entry captures: the type (internal defect, customer damage, warranty), the reason (adhesion failure, color mismatch, runs/sags, insufficient coverage, etc.), a defect description, who discovered it, and pricing responsibility.
+
+        **Pricing responsibility options:**
+        - **Shop Fault — no charge:** All rework job item prices are set to $0. Use this when the defect is the shop's fault.
+        - **Customer responsible — reduced rate:** Item prices are copied from the original job. Edit them down after the rework job is created.
+        - **Customer responsible — full price:** Item prices are copied from the original job as-is.
+
+        **Creating a rework job:** Toggle "Parts are back — create a Rework Job" in the log form. Select which items need to be redone and choose the pricing responsibility. The system creates a new job with a sub-number (e.g., JOB-2605-0001-R1), copies the selected items with their coats and prep services, and auto-records intake (parts are already on hand). The rework job description shows the defect type, reason, and pricing at the top of the job where it is easy to see.
+
+        **Rework job completion:** When the rework job reaches a terminal status (Completed, Delivered, etc.), the linked rework record on the original job is automatically marked as **Resolved**. If the rework job is Cancelled instead, the record is marked **Written Off**. No manual follow-up on the original job is needed.
 
         **Job Templates:** [/JobTemplates](/JobTemplates) — Save a job's items as a template to reuse for common work types. When creating a new job, select a template to pre-fill items.
 
@@ -462,6 +473,13 @@ public static class HelpKnowledgeBase
         - Every scan log is recorded as a JobUsage or Adjustment InventoryTransaction and immediately reduces QuantityOnHand; visible in Inventory Activity ledger
         - First-time scan on a new device requires login; browser caches the session after that
 
+        **Location / Bin filtering and printing:**
+        - Every inventory item has an optional **Location** field (e.g. "Shelf A", "Bin 3") set on the Create/Edit form.
+        - Once any item has a location, a **Location dropdown** appears in the Inventory list filter bar (next to Category). Selecting a location filters the list to only items stored there. Can be combined with keyword search and category filter simultaneously.
+        - Each location badge in the table is a clickable link that instantly filters to that bin.
+        - With a location filter active, a **Print Bin** button appears in the filter banner. Clicking it opens a printer-ready page (new tab) at /Inventory/PrintBin?location=... listing all items in that bin with line number, name, color, and SKU. No site chrome — prints cleanly on a standard sheet.
+        - The Location dropdown only appears when at least one item has a location value set. If a user doesn't see it, they need to fill in the Location field on at least one inventory item.
+
         **Catalog Lookup & Label Scanner (when adding/editing inventory items):**
         - When creating or editing an inventory item, click the **Lookup** button next to the SKU/Part Number field to search a built-in platform catalog of thousands of Prismatic Powders and other manufacturer SKUs. Select a match to auto-fill name, manufacturer, color code, finish, coverage rate, SDS/TDS links, and cure specs.
         - The catalog only shows products not already in the company's inventory (prevents duplicates). When editing, the item's own catalog entry is always shown.