fix(client): restore retail interaction parity

Harden keyboard and camera routing, inventory and vendor interactions, chat/emotes, relog portal flow, and paperdoll rendering. Add retail research, connected gate coverage, and release-gate validation.

src/AcDream.App/Diagnostics/FrameScreenshotController.cs

@@ -63,6 +63,36 @@ internal sealed class FrameScreenshotController
         return true;
     }
 
+    /// <summary>
+    /// Queues the first free retail-style screenshot name. Retail scans
+    /// <c>ScreenShot00000.jpg</c> through <c>ScreenShot99999.jpg</c> beside
+    /// its preferences file; acdream keeps the exact stem/numbering while
+    /// writing lossless PNGs in the portable screenshots directory.
+    /// </summary>
+    public bool TryRequestRetailScreenshot(out string path, out string error)
+    {
+        for (int index = 0; index < 100_000; index++)
+        {
+            string name = $"ScreenShot{index:D5}";
+            string candidate = Path.Combine(_directory, name + ".png");
+            if (File.Exists(candidate) || _status.ContainsKey(name))
+                continue;
+
+            if (TryRequest(name, out error))
+            {
+                path = candidate;
+                return true;
+            }
+
+            path = string.Empty;
+            return false;
+        }
+
+        path = string.Empty;
+        error = "all retail screenshot names ScreenShot00000 through ScreenShot99999 are in use";
+        return false;
+    }
+
     public bool IsComplete(string name) =>
         _status.TryGetValue(name, out CaptureStatus? status)
         && status.State == CaptureState.Complete;