fix(selection): port SmartBox click lighting pulse

Port the retail high/low material-lighting cadence for successful world clicks, keep it instance-scoped in the modern renderer, and restore authored lighting after 0.8 seconds. Correct the selection oracle and pin timing plus per-frame buffer lifecycle with tests.

Co-authored-by: Codex <codex@openai.com>

src/AcDream.App/Rendering/Selection/IRetailSelectionLightingSource.cs

@@ -0,0 +1,17 @@
+namespace AcDream.App.Rendering.Selection;
+
+/// <summary>
+/// Supplies the transient material lighting override which retail applies to
+/// a world object after SmartBox resolves a click.
+/// </summary>
+internal interface IRetailSelectionLightingSource
+{
+    /// <summary>Advances the retail SmartBox flip cadence once for this frame.</summary>
+    void TickLighting();
+
+    /// <summary>
+    /// Returns the current CMaterial luminosity/diffuse replacement for an
+    /// object, or false when its authored material values must be restored.
+    /// </summary>
+    bool TryGetLighting(uint serverGuid, out RetailSelectionLighting lighting);
+}