diff --git a/src/AcDream.UI.Abstractions/Panels/Debug/DebugVM.cs b/src/AcDream.UI.Abstractions/Panels/Debug/DebugVM.cs
index baf1055..b051dc0 100644
--- a/src/AcDream.UI.Abstractions/Panels/Debug/DebugVM.cs
+++ b/src/AcDream.UI.Abstractions/Panels/Debug/DebugVM.cs
@@ -291,6 +291,72 @@ public sealed class DebugVM
         set => PhysicsDiagnostics.ProbeAutoWalkEnabled = value;
     }
 
+    // ── Indoor rendering diagnostics (2026-05-19) ───────────────────
+    // Mirror RenderingDiagnostics statics so DebugPanel checkbox toggles
+    // take effect on the next render frame without relaunching.
+
+    /// <summary>
+    /// Runtime mirror of <c>RenderingDiagnostics.ProbeIndoorWalkEnabled</c>
+    /// (env var <c>ACDREAM_PROBE_INDOOR_WALK</c>).
+    /// </summary>
+    public bool ProbeIndoorWalk
+    {
+        get => RenderingDiagnostics.ProbeIndoorWalkEnabled;
+        set => RenderingDiagnostics.ProbeIndoorWalkEnabled = value;
+    }
+
+    /// <summary>
+    /// Runtime mirror of <c>RenderingDiagnostics.ProbeIndoorLookupEnabled</c>
+    /// (env var <c>ACDREAM_PROBE_INDOOR_LOOKUP</c>).
+    /// </summary>
+    public bool ProbeIndoorLookup
+    {
+        get => RenderingDiagnostics.ProbeIndoorLookupEnabled;
+        set => RenderingDiagnostics.ProbeIndoorLookupEnabled = value;
+    }
+
+    /// <summary>
+    /// Runtime mirror of <c>RenderingDiagnostics.ProbeIndoorUploadEnabled</c>
+    /// (env var <c>ACDREAM_PROBE_INDOOR_UPLOAD</c>).
+    /// </summary>
+    public bool ProbeIndoorUpload
+    {
+        get => RenderingDiagnostics.ProbeIndoorUploadEnabled;
+        set => RenderingDiagnostics.ProbeIndoorUploadEnabled = value;
+    }
+
+    /// <summary>
+    /// Runtime mirror of <c>RenderingDiagnostics.ProbeIndoorXformEnabled</c>
+    /// (env var <c>ACDREAM_PROBE_INDOOR_XFORM</c>).
+    /// </summary>
+    public bool ProbeIndoorXform
+    {
+        get => RenderingDiagnostics.ProbeIndoorXformEnabled;
+        set => RenderingDiagnostics.ProbeIndoorXformEnabled = value;
+    }
+
+    /// <summary>
+    /// Runtime mirror of <c>RenderingDiagnostics.ProbeIndoorCullEnabled</c>
+    /// (env var <c>ACDREAM_PROBE_INDOOR_CULL</c>).
+    /// </summary>
+    public bool ProbeIndoorCull
+    {
+        get => RenderingDiagnostics.ProbeIndoorCullEnabled;
+        set => RenderingDiagnostics.ProbeIndoorCullEnabled = value;
+    }
+
+    /// <summary>
+    /// Runtime mirror of <c>RenderingDiagnostics.IndoorAll</c> — toggles all
+    /// five indoor probes together. No dedicated env var; set any individual
+    /// probe env var or use <c>ACDREAM_PROBE_INDOOR_ALL</c> to initialize
+    /// all five flags on at startup.
+    /// </summary>
+    public bool ProbeIndoorAll
+    {
+        get => RenderingDiagnostics.IndoorAll;
+        set => RenderingDiagnostics.IndoorAll = value;
+    }
+
     // ── Chase camera tunables (forward to CameraDiagnostics) ──────────
 
     /// <summary>Runtime mirror of <see cref="CameraDiagnostics.UseRetailChaseCamera"/>.</summary>