RDP tabs on Windows: no visible mstsc windows and resolution follows the tab size. mstsc is started with /v: instead of an unsigned .rdp file (avoids the mandatory "unknown publisher" security warning; a file is still used when the host needs drive redirection, clipboard/audio off or scaling); a WinEvent hook adopts the session window while it is still hidden (borderless, parked off-screen until logged in), keeps the "connecting" progress dialog invisible and shows real prompts (certificate, errors) centered over the tab; servers without dynamic resolution (mstsc clamps the window to the session size) are detected and reconnected with the new size after resizing, re-confirming a certificate the user already accepted for this session

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/renderer/app.js

@@ -1994,6 +1994,10 @@ class RdpSession {
       this.overlay?.remove(); this.overlay = null;
       setTabState(this, 'on');
       if (this.isVisible()) { this.pushBounds(); api.rdp.show(this.id); } else api.rdp.hide(this.id);
+    } else if (type === 'resizing') {
+      this.attached = false;
+      setTabState(this, 'wait');
+      this.showOverlay(T('Adjusting resolution …'));
     } else if (type === 'exit') {
       this.attached = false; this.exited = true;
       setTabState(this, payload?.code ? 'err' : '');