feat(shopfloor): /fp/tablet/tiles returns session_mode + kiosk_uid

OWL lock screen needs to know (a) the active session mode (legacy or
session_swap) to branch between endpoints, and (b) the kiosk uid to
determine 'is the current browser session the kiosk?' Both come from
the bootstrap response so no extra round-trips on every render.

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

fusion_plating/fusion_plating_shopfloor/controllers/tablet_controller.py

@@ -498,10 +498,24 @@ class FpTabletController(http.Controller):
             })
         # Clocked-in first, then alphabetical within bucket
         tiles.sort(key=lambda t: (not t['is_clocked_in'], t['name']))
+        # Phase D bootstrap: lock screen needs the feature flag + kiosk
+        # uid so it knows whether to call /unlock (legacy) or
+        # /unlock_session (new), and whether the current session is
+        # the kiosk's (= no tech logged in).
+        ICP = env['ir.config_parameter'].sudo()
+        session_mode = ICP.get_param('fp.shopfloor.tablet_session_mode', 'legacy')
+        kiosk = env.ref(
+            'fusion_plating_shopfloor.user_fp_tablet_kiosk',
+            raise_if_not_found=False,
+        )
+        kiosk_uid = kiosk.id if kiosk else None
         return {
             'ok': True,
             'company': _lock_company_payload(request.env),
             'tiles': tiles,
+            'tablet_session_mode': session_mode,
+            'kiosk_uid': kiosk_uid,
+            'current_uid': request.env.uid,
         }
 
     # ======================================================================