Wire the first-shift tutorial into gameplay

Add the non-blocking prompt card, safe compliant visitor, action-driven
advancement through the real wheel/inspection/warning/radio panels, persisted
completion/skip, a Settings replay action and localized tutorial strings.
Scripted tests/captures bypass the tutorial unless --tutorial is passed. Add a
windowed smoke covering the full flow. Headless 237/237, Python 94/94, tutorial
smoke passes.

content/strings.en.json

@@ -88,5 +88,17 @@
   "review.timeline_button": "Body camera timeline",
   "hud.nearby": "%d nearby · Tab or mouse wheel cycles targets",
   "hud.precision": "Precision walk (Shift)",
-  "hud.controls_gamepad": "Left stick move · Right stick look · A wheel/confirm · B cancel · X inspect · Y radio · LB slow · RB wand"
+  "hud.controls_gamepad": "Left stick move · Right stick look · A wheel/confirm · B cancel · X inspect · Y radio · LB slow · RB wand",
+  "tutorial.header": "FIRST SHIFT",
+  "tutorial.skip_hint": "F1 skip tutorial",
+  "tutorial.arrive": "Walk forward and look around. The entrance is behind you.",
+  "tutorial.focus": "Look at the visitor. Press Tab or the mouse wheel to cycle targets.",
+  "tutorial.wheel": "Open the action wheel with Space or left click.",
+  "tutorial.inspect": "Choose Inspect and read the access evidence.",
+  "tutorial.direction": "Close the panel and give a polite direction.",
+  "tutorial.warning": "Give a formal warning if the visitor persists. It arms the body camera.",
+  "tutorial.radio": "Open the assistance radio and submit a short report.",
+  "tutorial.review": "Finish the shift and review what happened.",
+  "tutorial.completed": "Tutorial complete.",
+  "tutorial.skipped": "Tutorial skipped."
 }