fix(shopfloor,reports): make QR scan actually navigate after decode

Two bugs were colluding to make iPhone scans look like "nothing
happens":

1. The in-app scanner was calling action.doAction({res_model: 'fp.job',
   res_id: <decoded-id>}). Old physical stickers (still on every box)
   encode /fp/wo/<mrp.production.id> — that id space doesn't match
   fp.job, so the form opened on a non-existent record and silently
   showed nothing. New /fp/job/<id> stickers happened to work because
   the IDs lined up by coincidence.

2. The /fp/wo/<id> controller redirected to mrp.production / mrp.workorder
   forms, both of which still exist as legacy records but aren't the
   canonical source of truth post-migration.

Fix:
- qr_scanner._handleCode now navigates via window.location.href instead
  of action.doAction. It hands /fp/job/<n> and /fp/wo/<n> URLs straight
  to the existing server-side controllers, which know how to resolve
  the right record. Bare numeric ids pasted manually -> /fp/job/<n>.
  Anything else surfaces the decoded text as an error so the operator
  can see decode worked but the value isn't a sticker.

- Modal now shows "Detected: <value>" the moment a code is decoded
  (before navigation), so even on slow phones the operator sees
  immediate feedback that the camera read the QR.

- wo_scan.py now resolves in this order:
    1. fp.job by legacy_mrp_production_id (migration-aware — old
       stickers route to the new model)
    2. mrp.production direct browse
    3. mrp.workorder direct browse
    4. fall back to /odoo/plating-jobs (or work-orders list)

Versions: shopfloor 19.0.17.0.0 -> 19.0.18.0.0,
          reports   19.0.7.15.0 -> 19.0.7.16.0.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating_reports/controllers/wo_scan.py

@@ -22,25 +22,42 @@ class FpWoScanController(http.Controller):
     def wo_scan_redirect(self, wo_id, **kwargs):
         """Redirect a scanned sticker to the right backend form.
 
-        Stickers are printed from two sources — mrp.workorder (WO) and
-        mrp.production (MO) — and both embed their own numeric id in
-        the QR. Try the MO table first (operators live on the MO
-        form — customer, SO, all WOs visible) and fall back to WO.
+        Resolution order:
+          1. fp.job mapped from this MO id via legacy_mrp_production_id
+             (post-migration: physical stickers still encode the old MO
+             id, but the canonical record is now an fp.job)
+          2. mrp.production with this id (pre-migration callers, or if
+             the legacy mapping wasn't run)
+          3. mrp.workorder with this id (older stickers that encoded
+             the WO id rather than the MO id)
+          4. fall back to the jobs list so staff can search manually.
         """
-        MO = request.env['mrp.production'].sudo()
-        WO = request.env['mrp.workorder'].sudo()
+        env = request.env
 
-        mo = MO.browse(wo_id).exists()
+        # 1) New native model — preferred when migration has run.
+        if 'fp.job' in env and 'legacy_mrp_production_id' in env['fp.job']._fields:
+            job = env['fp.job'].sudo().search(
+                [('legacy_mrp_production_id', '=', wo_id)], limit=1)
+            if job:
+                return request.redirect(
+                    '/odoo/action-fusion_plating.action_fp_job/%d' % job.id
+                )
+
+        # 2) Legacy MO form (pre-migration or non-migrated records).
+        mo = env['mrp.production'].sudo().browse(wo_id).exists()
         if mo:
             return request.redirect(
                 '/odoo/action-mrp.mrp_production_action/%d' % mo.id
             )
 
-        wo = WO.browse(wo_id).exists()
+        # 3) Legacy WO form.
+        wo = env['mrp.workorder'].sudo().browse(wo_id).exists()
         if wo:
             return request.redirect(
                 '/odoo/action-mrp.action_mrp_workorder/%d' % wo.id
             )
 
-        # Neither resolved — land on the WO list so staff can search manually.
+        # 4) Fall back: native jobs list if it exists, otherwise WO list.
+        if 'fp.job' in env:
+            return request.redirect('/odoo/plating-jobs')
         return request.redirect('/odoo/manufacturing/work-orders')