Add documentation folder READMEs and visual previews

Create an index README in docs/ and every tracked docs subfolder, with relative
image galleries for Blender previews, screen designs, screenshots and concepts.
Generated realism-run READMEs were also created on disk but remain gitignored.
Validate all Markdown/image links.

docs/screens/designs/README.md

@@ -0,0 +1,29 @@
+# Screens/Designs
+
+Screen-design mockups used by the comparison and vision-judge gates for the runtime UI.
+
+## Image previews
+
+| Preview | File |
+| --- | --- |
+| <img src="access_inspection.png" width="280" alt="access_inspection.png"> | [`access_inspection.png`](access_inspection.png) |
+| <img src="body_camera_timeline.png" width="280" alt="body_camera_timeline.png"> | [`body_camera_timeline.png`](body_camera_timeline.png) |
+| <img src="crowd_panic.png" width="280" alt="crowd_panic.png"> | [`crowd_panic.png`](crowd_panic.png) |
+| <img src="emergency_radio.png" width="280" alt="emergency_radio.png"> | [`emergency_radio.png`](emergency_radio.png) |
+| <img src="escalation_hud.png" width="280" alt="escalation_hud.png"> | [`escalation_hud.png`](escalation_hud.png) |
+| <img src="joke_shop_queue.png" width="280" alt="joke_shop_queue.png"> | [`joke_shop_queue.png`](joke_shop_queue.png) |
+| <img src="late_night_avenue.png" width="280" alt="late_night_avenue.png"> | [`late_night_avenue.png`](late_night_avenue.png) |
+| <img src="movement_precision.png" width="280" alt="movement_precision.png"> | [`movement_precision.png`](movement_precision.png) |
+| <img src="night_flashlight.png" width="280" alt="night_flashlight.png"> | [`night_flashlight.png`](night_flashlight.png) |
+| <img src="pause_overlay.png" width="280" alt="pause_overlay.png"> | [`pause_overlay.png`](pause_overlay.png) |
+| <img src="prop_gallery.png" width="280" alt="prop_gallery.png"> | [`prop_gallery.png`](prop_gallery.png) |
+| <img src="radial_menu.png" width="280" alt="radial_menu.png"> | [`radial_menu.png`](radial_menu.png) |
+| <img src="radio_report.png" width="280" alt="radio_report.png"> | [`radio_report.png`](radio_report.png) |
+| <img src="responder_arrival.png" width="280" alt="responder_arrival.png"> | [`responder_arrival.png`](responder_arrival.png) |
+| <img src="settings_panel.png" width="280" alt="settings_panel.png"> | [`settings_panel.png`](settings_panel.png) |
+| <img src="shift_review.png" width="280" alt="shift_review.png"> | [`shift_review.png`](shift_review.png) |
+| <img src="start_menu.png" width="280" alt="start_menu.png"> | [`start_menu.png`](start_menu.png) |
+| <img src="studio_arrival.png" width="280" alt="studio_arrival.png"> | [`studio_arrival.png`](studio_arrival.png) |
+| <img src="targeting_npc.png" width="280" alt="targeting_npc.png"> | [`targeting_npc.png`](targeting_npc.png) |
+| <img src="venue_overview.png" width="280" alt="venue_overview.png"> | [`venue_overview.png`](venue_overview.png) |
+| <img src="wand_screening.png" width="280" alt="wand_screening.png"> | [`wand_screening.png`](wand_screening.png) |