Require auth on all work order QR codes and add top view QR

- StatusBump (GET + POST) now requires authentication; routes by job ID
  instead of anonymous ShopAccessCode GUID; records actual user name in
  status history instead of anonymous token string
- WorkOrder action generates a second "View Job" QR in the header linking
  to the authenticated Details page (for verifying specs and seeing catalog
  images on mobile); status bump QR updated to ID-based URL
- WorkOrder view: top QR added to header alongside job number; status bump
  label updated (removed "no login required" copy)
- StatusBump view: updated form routing from asp-route-token to asp-route-id
- HelpKnowledgeBase and Jobs help article updated with two-tier QR docs

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

src/PowderCoating.Web/Helpers/HelpKnowledgeBase.cs

@@ -296,6 +296,16 @@ public static class HelpKnowledgeBase
 
         **Creating an invoice from a job:** On the Job Details page, look for the Invoice section and click "Create Invoice."
 
+        **Work Order QR Codes:** Every printed job work order includes two tiers of QR codes — one for viewing the job, and a separate set for taking action on it. All QR codes require the worker to be logged in.
+
+        *Top QR — View Job:* Located in the header next to the job number. Scanning it opens the full Job Details page on the worker's phone — shows all items, catalog images, powder specs, coatings, prep services, and special instructions. Use this to verify you're working the right job and to see catalog product images on mobile.
+
+        *Bottom QR codes — Actions:*
+        - **Update Status** — advances the job to its next status stage. Opens a dedicated mobile-friendly status bump page where the worker confirms the new stage. The status change is recorded in history with the logged-in worker's name.
+        - **Log Powder Usage** — one QR per unique powder/inventory item on the job. Scanning opens the inventory usage log page pre-filled with that item and the job, so the worker can record actual lbs used without navigating through the app.
+
+        All QR codes require login — workers must have an active account. Logging in once on their phone is sufficient for the session.
+
         **Blank Work Order:** Print a pre-formatted paper work order to hand to a walk-in customer before creating a digital job record.
         - Access: Jobs list page → printer icon button "Blank Work Order" in the top-right toolbar. Or navigate directly to /WorkOrder/Blank.
         - The PDF opens in a new tab ready to print. It includes: company logo and address, Drop Off Date field, Client Name / Client Phone / Due Date fields, 12-row parts table (Part Description / Color / Quote), Notes box, customizable Terms & Conditions text, and a Customer Signature line.