From 2ec69427d012ebf9725462e102952dadffc2a527 Mon Sep 17 00:00:00 2001
From: Eric <ciregenz@berkeley.edu>
Date: Wed, 27 May 2026 20:51:14 -0700
Subject: [PATCH] [eric] revert: drop the five windows ablations now that
 electron 42 (chromium 146) erases the chromium-144 crashes they were working
 around

---
 .../components/Onboarding/OnboardingPanel.tsx |  4 +-
 .../components/editor/RichPromptEditor.tsx    | 82 ++++++------------
 .../ChatInput/view/EditorSurface.tsx          | 85 ++++++-------------
 frontend/src/app/pages/Views/CodeEditor.tsx   | 29 +------
 frontend/src/app/pages/Views/ViewPreview.tsx  |  4 +-
 5 files changed, 57 insertions(+), 147 deletions(-)

diff --git a/frontend/src/app/components/Onboarding/OnboardingPanel.tsx b/frontend/src/app/components/Onboarding/OnboardingPanel.tsx
index 85386811..958bdaf5 100644
--- a/frontend/src/app/components/Onboarding/OnboardingPanel.tsx
+++ b/frontend/src/app/components/Onboarding/OnboardingPanel.tsx
@@ -443,11 +443,11 @@ const StepCardBody: React.FC<StepCardProps> = ({
             : undefined,
         }}
       >
-        {step.videoSrc && !(typeof navigator !== 'undefined' && navigator.userAgent.includes('Windows')) ? (
+        {step.videoSrc ? (
           <Box
             component="video"
             src={step.videoSrc}
-            autoPlay
+            autoPlay={typeof navigator === 'undefined' || !navigator.userAgent.includes('Windows')}
             muted
             loop
             playsInline
diff --git a/frontend/src/app/components/editor/RichPromptEditor.tsx b/frontend/src/app/components/editor/RichPromptEditor.tsx
index f726bfc2..7ef2b468 100644
--- a/frontend/src/app/components/editor/RichPromptEditor.tsx
+++ b/frontend/src/app/components/editor/RichPromptEditor.tsx
@@ -321,62 +321,32 @@ const RichPromptEditor: React.FC<RichPromptEditorProps> = ({
         )}
 
         <Box sx={{ px: 1.75, pt: label ? 2 : 1.25, pb: 1.25, position: 'relative' }}>
-          {(typeof navigator !== 'undefined' && navigator.userAgent.includes('Windows') && navigator.userAgent.includes('Electron')) ? (
-            // Windows-Electron: <div contentEditable> hits the Chromium 144 TSF native crash; fall back to a plain textarea (loses inline pills but stays alive).
-            <textarea
-              ref={editorRef as unknown as React.RefObject<HTMLTextAreaElement>}
-              onInput={handleInput as unknown as React.FormEventHandler<HTMLTextAreaElement>}
-              onClick={handleEditorClick as unknown as React.MouseEventHandler<HTMLTextAreaElement>}
-              onKeyDown={handleKeyDown as unknown as React.KeyboardEventHandler<HTMLTextAreaElement>}
-              onPaste={handlePaste as unknown as React.ClipboardEventHandler<HTMLTextAreaElement>}
-              onFocus={() => setFocused(true)}
-              onBlur={() => setFocused(false)}
-              spellCheck={false}
-              style={{
-                width: '100%',
-                minHeight: `${minHeight}rem`,
-                maxHeight: `${maxHeight}rem`,
-                overflowY: 'auto',
-                background: 'transparent',
-                border: 'none',
-                outline: 'none',
-                resize: 'none',
-                color: c.text.primary,
-                fontSize: `${FONT_SIZE}rem`,
-                lineHeight: `${LINE_HEIGHT}`,
-                fontFamily: 'inherit',
-                wordBreak: 'break-word',
-                whiteSpace: 'pre-wrap',
-              }}
-            />
-          ) : (
-            <div
-              ref={editorRef}
-              contentEditable
-              suppressContentEditableWarning
-              onInput={handleInput}
-              onClick={handleEditorClick}
-              onKeyDown={handleKeyDown}
-              onPaste={handlePaste}
-              onFocus={() => setFocused(true)}
-              onBlur={() => setFocused(false)}
-              style={{
-                width: '100%',
-                minHeight: `${minHeight}rem`,
-                maxHeight: `${maxHeight}rem`,
-                overflowY: 'auto',
-                background: 'transparent',
-                border: 'none',
-                outline: 'none',
-                color: c.text.primary,
-                fontSize: `${FONT_SIZE}rem`,
-                lineHeight: `${LINE_HEIGHT}`,
-                fontFamily: 'inherit',
-                wordBreak: 'break-word',
-                whiteSpace: 'pre-wrap',
-              }}
-            />
-          )}
+          <div
+            ref={editorRef}
+            contentEditable
+            suppressContentEditableWarning
+            onInput={handleInput}
+            onClick={handleEditorClick}
+            onKeyDown={handleKeyDown}
+            onPaste={handlePaste}
+            onFocus={() => setFocused(true)}
+            onBlur={() => setFocused(false)}
+            style={{
+              width: '100%',
+              minHeight: `${minHeight}rem`,
+              maxHeight: `${maxHeight}rem`,
+              overflowY: 'auto',
+              background: 'transparent',
+              border: 'none',
+              outline: 'none',
+              color: c.text.primary,
+              fontSize: `${FONT_SIZE}rem`,
+              lineHeight: `${LINE_HEIGHT}`,
+              fontFamily: 'inherit',
+              wordBreak: 'break-word',
+              whiteSpace: 'pre-wrap',
+            }}
+          />
           {!hasContent && (
             <div
               style={{
diff --git a/frontend/src/app/pages/AgentChat/ChatInput/view/EditorSurface.tsx b/frontend/src/app/pages/AgentChat/ChatInput/view/EditorSurface.tsx
index ef6ef622..03977d82 100644
--- a/frontend/src/app/pages/AgentChat/ChatInput/view/EditorSurface.tsx
+++ b/frontend/src/app/pages/AgentChat/ChatInput/view/EditorSurface.tsx
@@ -18,9 +18,6 @@ interface Props {
   onPaste: (e: React.ClipboardEvent) => void;
 }
 
-// Windows-Electron: <div contentEditable> mounts hit a Chromium 144 TSF native crash on commit; the textarea ablation the handlers/draft already route for has to land here too or the renderer segfaults.
-const IS_WIN_ELECTRON = typeof navigator !== 'undefined' && navigator.userAgent.includes('Windows') && navigator.userAgent.includes('Electron');
-
 export const EditorSurface: React.FC<Props> = ({
   c, editorRef, disabled, hasContent, hasAttachments, autoRunMode, isRunning, queueLength,
   placeholderLabel, onInput, onClick, onKeyDown, onPaste,
@@ -35,62 +32,32 @@ export const EditorSurface: React.FC<Props> = ({
 
   return (
     <Box sx={{ px: 1.5, pt: hasAttachments ? 0.5 : 1.25, pb: 0.25, position: 'relative' }}>
-      {IS_WIN_ELECTRON ? (
-        <textarea
-          ref={editorRef as unknown as RefObject<HTMLTextAreaElement>}
-          data-onboarding="chat-input"
-          disabled={disabled}
-          spellCheck={false}
-          onInput={onInput}
-          onClick={onClick}
-          onKeyDown={onKeyDown as unknown as React.KeyboardEventHandler<HTMLTextAreaElement>}
-          onPaste={onPaste as unknown as React.ClipboardEventHandler<HTMLTextAreaElement>}
-          rows={1}
-          style={{
-            width: '100%',
-            minHeight: '1.5em',
-            maxHeight: 220,
-            overflowY: 'auto',
-            background: 'transparent',
-            border: 'none',
-            outline: 'none',
-            color: c.text.primary,
-            fontSize: '0.95rem',
-            lineHeight: '1.55',
-            fontFamily: 'inherit',
-            wordBreak: 'break-word',
-            whiteSpace: 'pre-wrap',
-            resize: 'none',
-          }}
-        />
-      ) : (
-        <div
-          ref={editorRef}
-          data-onboarding="chat-input"
-          contentEditable={!disabled}
-          suppressContentEditableWarning
-          spellCheck={false}
-          onInput={onInput}
-          onClick={onClick}
-          onKeyDown={onKeyDown}
-          onPaste={onPaste}
-          style={{
-            width: '100%',
-            minHeight: '1.5em',
-            maxHeight: 220,
-            overflowY: 'auto',
-            background: 'transparent',
-            border: 'none',
-            outline: 'none',
-            color: c.text.primary,
-            fontSize: '0.95rem',
-            lineHeight: '1.55',
-            fontFamily: 'inherit',
-            wordBreak: 'break-word',
-            whiteSpace: 'pre-wrap',
-          }}
-        />
-      )}
+      <div
+        ref={editorRef}
+        data-onboarding="chat-input"
+        contentEditable={!disabled}
+        suppressContentEditableWarning
+        spellCheck={false}
+        onInput={onInput}
+        onClick={onClick}
+        onKeyDown={onKeyDown}
+        onPaste={onPaste}
+        style={{
+          width: '100%',
+          minHeight: '1.5em',
+          maxHeight: 220,
+          overflowY: 'auto',
+          background: 'transparent',
+          border: 'none',
+          outline: 'none',
+          color: c.text.primary,
+          fontSize: '0.95rem',
+          lineHeight: '1.55',
+          fontFamily: 'inherit',
+          wordBreak: 'break-word',
+          whiteSpace: 'pre-wrap',
+        }}
+      />
       {!hasContent && (
         <div
           style={{
diff --git a/frontend/src/app/pages/Views/CodeEditor.tsx b/frontend/src/app/pages/Views/CodeEditor.tsx
index 4e90e15c..a0c2b8d3 100644
--- a/frontend/src/app/pages/Views/CodeEditor.tsx
+++ b/frontend/src/app/pages/Views/CodeEditor.tsx
@@ -26,9 +26,6 @@ const langExtension = (lang: Language) => {
   }
 };
 
-// Windows-Electron: CodeMirror's EditorView mounts a contenteditable surface internally; same Chromium 144 TSF crash as EditorSurface. Skip CodeMirror entirely on Windows and render a plain <textarea> (no syntax highlighting, but no segfault).
-const IS_WIN_ELECTRON = typeof navigator !== 'undefined' && navigator.userAgent.includes('Windows') && navigator.userAgent.includes('Electron');
-
 const CodeEditor: React.FC<Props> = ({ value, onChange, language, placeholder }) => {
   const containerRef = useRef<HTMLDivElement>(null);
   const viewRef = useRef<EditorView | null>(null);
@@ -59,7 +56,7 @@ const CodeEditor: React.FC<Props> = ({ value, onChange, language, placeholder })
   }, [language, mode, placeholder]);
 
   useEffect(() => {
-    if (IS_WIN_ELECTRON || !containerRef.current) return;
+    if (!containerRef.current) return;
 
     const state = EditorState.create({ doc: value, extensions });
     const view = new EditorView({ state, parent: containerRef.current });
@@ -73,7 +70,6 @@ const CodeEditor: React.FC<Props> = ({ value, onChange, language, placeholder })
   }, [extensions]);
 
   useEffect(() => {
-    if (IS_WIN_ELECTRON) return;
     const view = viewRef.current;
     if (!view) return;
     const current = view.state.doc.toString();
@@ -84,29 +80,6 @@ const CodeEditor: React.FC<Props> = ({ value, onChange, language, placeholder })
     }
   }, [value]);
 
-  if (IS_WIN_ELECTRON) {
-    return (
-      <textarea
-        value={value}
-        onChange={(e) => onChange(e.target.value)}
-        placeholder={placeholder}
-        spellCheck={false}
-        style={{
-          width: '100%',
-          height: '100%',
-          background: 'transparent',
-          border: 'none',
-          outline: 'none',
-          resize: 'none',
-          padding: '8px',
-          fontFamily: 'ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace',
-          fontSize: '13px',
-          color: mode === 'dark' ? '#fff' : '#000',
-        }}
-      />
-    );
-  }
-
   return <div ref={containerRef} style={{ height: '100%', width: '100%', overflow: 'hidden' }} />;
 };
 
diff --git a/frontend/src/app/pages/Views/ViewPreview.tsx b/frontend/src/app/pages/Views/ViewPreview.tsx
index e9dc9d2a..4b1bf557 100644
--- a/frontend/src/app/pages/Views/ViewPreview.tsx
+++ b/frontend/src/app/pages/Views/ViewPreview.tsx
@@ -7,8 +7,8 @@ import { useIframeElementSelector } from './useIframeElementSelector';
 import { getAuthToken, ensureAuthToken } from '@/shared/config';
 import { useClaudeTokens } from '@/shared/styles/ThemeContext';
 
-// In Electron use <webview> to escape iframe restrictions (popups, mic/camera, WebAuthn, cookied fetch); outside Electron fall back to iframe. Windows-Electron also falls back: the <webview> tag mount segfaults the renderer on Chromium 144 + Electron 40 CastLabs (same crash as BrowserCard.tsx:77).
-const isElectron = navigator.userAgent.includes('Electron') && !navigator.userAgent.includes('Windows');
+// In Electron use <webview> to escape iframe restrictions (popups, mic/camera, WebAuthn, cookied fetch); outside Electron fall back to iframe.
+const isElectron = navigator.userAgent.includes('Electron');
 
 // Card previews render small; downscale + JPEG so thumbnails don't bloat the output JSON or every list fetch.
 const THUMB_WIDTH = 600;