[aidan] ux/large-text-paste: make pasted-text cards editable with autosave

frontend/src/app/components/editor/richEditorUtils.ts

@@ -91,6 +91,11 @@ function formatPasteLabel(charCount: number): string {
   return `Pasted text (${charCount.toLocaleString()} chars)`;
 }
 
+export function updatePasteCardLabel(card: HTMLElement, charCount: number): void {
+  const label = card.firstElementChild as HTMLElement | null;
+  if (label) label.textContent = formatPasteLabel(charCount);
+}
+
 export function createPasteCardElement(
   pasteId: string,
   charCount: number,
@@ -122,7 +127,13 @@ export function createPasteCardElement(
 
   const label = document.createElement('span');
   label.textContent = formatPasteLabel(charCount);
-  Object.assign(label.style, { maxWidth: '240px', overflow: 'hidden', textOverflow: 'ellipsis' });
+  Object.assign(label.style, {
+    maxWidth: '240px',
+    overflow: 'hidden',
+    textOverflow: 'ellipsis',
+    opacity: '0.85',
+    transition: 'transform 0.15s ease, opacity 0.15s ease',
+  });
   label.addEventListener('mousedown', (e) => { e.preventDefault(); e.stopPropagation(); onExpand(pasteId); });
 
   const closeBtn = document.createElement('span');
@@ -145,6 +156,9 @@ export function createPasteCardElement(
   closeBtn.addEventListener('mouseout', () => { closeBtn.style.opacity = '0.6'; closeBtn.style.color = 'inherit'; });
   closeBtn.addEventListener('mousedown', (e) => { e.preventDefault(); e.stopPropagation(); onRemove(pasteId); });
 
+  card.addEventListener('mouseenter', () => { label.style.transform = 'translateX(2px)'; label.style.opacity = '1'; });
+  card.addEventListener('mouseleave', () => { label.style.transform = 'translateX(0)'; label.style.opacity = '0.85'; });
+
   card.appendChild(label);
   card.appendChild(closeBtn);
   return card;

frontend/src/app/pages/AgentChat/ChatInput.tsx

@@ -107,8 +107,6 @@ const ChatInput = forwardRef<ChatInputHandle, Props>(({ onSend, disabled, mode,
     };
   }, [prefillPrompt]);
 
-  useDraftLoad(editorRef, ownerId);
-
   const [hasContent, setHasContent] = useState(() => !!loadDraft(ownerId));
   const [attachedSkills, setAttachedSkills] = useState<Record<string, AttachedSkill>>({});
   const [previewPasteId, setPreviewPasteId] = useState<string | null>(null);
@@ -292,6 +290,7 @@ const ChatInput = forwardRef<ChatInputHandle, Props>(({ onSend, disabled, mode,
     isDragOver,
     handleInput, handleEditorClick, handlePickerSelect, handleKeyDown, handlePaste,
     handleDragOver, handleDragLeave, handleDrop,
+    removePasteCard, savePasteCard,
   } = useEditorHandlers({
     editorRef, generalFileInputRef, ownerId, sessionId, autoRunMode, c, skills,
     elementSelection, setHasContent, setAttachedSkills, setForcedTools, onModeChange,
@@ -299,6 +298,8 @@ const ChatInput = forwardRef<ChatInputHandle, Props>(({ onSend, disabled, mode,
     onPasteExpand: setPreviewPasteId,
   });
 
+  useDraftLoad(editorRef, ownerId, setPreviewPasteId, removePasteCard, c.font.mono, c.status.error);
+
   const currentMode = modesMap[mode];
   const FALLBACK_MODE = { ...FALLBACK_MODE_BASE, color: c.accent.primary };
   const modeConf = currentMode
@@ -310,7 +311,7 @@ const ChatInput = forwardRef<ChatInputHandle, Props>(({ onSend, disabled, mode,
 
   return (
     <>
-    <PastePreviewDialog pasteId={previewPasteId} onClose={() => setPreviewPasteId(null)} />
+    <PastePreviewDialog pasteId={previewPasteId} onClose={() => setPreviewPasteId(null)} onSave={savePasteCard} />
     <ChatInputView
       c={c}
       containerRef={containerRef}

frontend/src/app/pages/AgentChat/ChatInput/hooks/draftStore.ts

@@ -1,5 +1,5 @@
 import { useEffect, RefObject } from 'react';
-import { PASTE_CARD_ATTR, getPasteContent } from '@/app/components/editor/richEditorUtils';
+import { PASTE_CARD_ATTR, getPasteContent, createPasteCardElement } from '@/app/components/editor/richEditorUtils';
 
 // Module-level draft store keyed by sessionId; survives unmount/remount and preserves skill pills via innerHTML.
 const _draftStore = new Map<string, string>();
@@ -26,7 +26,14 @@ export function deleteDraft(ownerId: string) {
   _draftStore.delete(ownerId);
 }
 
-export function useDraftLoad(editorRef: RefObject<HTMLDivElement>, ownerId: string) {
+export function useDraftLoad(
+  editorRef: RefObject<HTMLDivElement>,
+  ownerId: string,
+  onPasteExpand: (id: string) => void,
+  onPasteRemove: (id: string) => void,
+  monoFont: string,
+  errorColor: string,
+) {
   useEffect(() => {
     const saved = _draftStore.get(ownerId);
     const editor = editorRef.current;
@@ -41,10 +48,17 @@ export function useDraftLoad(editorRef: RefObject<HTMLDivElement>, ownerId: stri
     }
     if (!editor.textContent?.trim()) {
       editor.innerHTML = saved;
+      // innerHTML restore drops JS listeners, so stale paste cards are rebuilt fresh below instead of just kept.
       const staleCards = editor.querySelectorAll(`[${PASTE_CARD_ATTR}]`);
       staleCards.forEach((el) => {
         const pid = el.getAttribute(PASTE_CARD_ATTR);
-        if (!pid || !getPasteContent(pid)) el.remove();
+        const content = pid ? getPasteContent(pid) : undefined;
+        if (!pid || content === undefined) {
+          el.remove();
+          return;
+        }
+        const fresh = createPasteCardElement(pid, content.length, onPasteExpand, onPasteRemove, monoFont, errorColor);
+        el.replaceWith(fresh);
       });
       const range = document.createRange();
       range.selectNodeContents(editor);

frontend/src/app/pages/AgentChat/ChatInput/hooks/useEditorHandlers.ts

@@ -11,6 +11,7 @@ import {
   createPasteId,
   setPasteContent,
   deletePasteContent,
+  updatePasteCardLabel,
   detectEditorTrigger,
   TriggerState,
   EMPTY_TRIGGER,
@@ -112,6 +113,15 @@ export function useEditorHandlers(p: Params) {
     editor.focus();
   }, [updateHasContent]);
 
+  const savePasteCard = useCallback((pasteId: string, text: string) => {
+    setPasteContent(pasteId, text);
+    const editor = editorRef.current;
+    if (!editor) return;
+    const card = editor.querySelector(`[${PASTE_CARD_ATTR}="${pasteId}"]`) as HTMLElement | null;
+    if (card) updatePasteCardLabel(card, text.length);
+    scheduleDraftSave(ownerId, () => readEditorHTML(editor));
+  }, [ownerId]);
+
   const removeSkillPill = useCallback((skillId: string) => {
     const editor = editorRef.current;
     if (!editor) return;
@@ -349,5 +359,6 @@ export function useEditorHandlers(p: Params) {
     updateHasContent,
     handleInput, handleEditorClick, handlePickerSelect, handleKeyDown, handlePaste,
     handleDragOver, handleDragLeave, handleDrop,
+    removePasteCard, savePasteCard,
   };
 }

frontend/src/app/pages/AgentChat/ChatInput/view/PastePreviewDialog.tsx

@@ -1,20 +1,31 @@
-import React from 'react';
+import React, { useEffect, useState } from 'react';
 import Dialog from '@mui/material/Dialog';
 import Box from '@mui/material/Box';
 import Typography from '@mui/material/Typography';
+import TextField from '@mui/material/TextField';
 import { useClaudeTokens } from '@/shared/styles/ThemeContext';
 import { getPasteContent } from '@/app/components/editor/richEditorUtils';
 
 interface Props {
   pasteId: string | null;
   onClose: () => void;
+  onSave: (pasteId: string, text: string) => void;
 }
 
-export const PastePreviewDialog: React.FC<Props> = ({ pasteId, onClose }) => {
+export const PastePreviewDialog: React.FC<Props> = ({ pasteId, onClose, onSave }) => {
   const c = useClaudeTokens();
   const open = !!pasteId;
-  const content = pasteId ? (getPasteContent(pasteId) ?? '') : '';
-  const chars = content.length;
+  const original = pasteId ? getPasteContent(pasteId) : undefined;
+  const [draft, setDraft] = useState('');
+
+  useEffect(() => {
+    setDraft(original ?? '');
+  }, [pasteId]);
+
+  const handleChange = (text: string) => {
+    setDraft(text);
+    if (pasteId) onSave(pasteId, text);
+  };
 
   return (
     <Dialog
@@ -27,26 +38,33 @@ export const PastePreviewDialog: React.FC<Props> = ({ pasteId, onClose }) => {
           Pasted text
         </Typography>
         <Typography sx={{ color: c.text.tertiary, fontSize: '0.75rem', mt: 0.25 }}>
-          {chars.toLocaleString()} characters
+          {draft.length.toLocaleString()} characters
         </Typography>
       </Box>
-      <Box
-        sx={{
-          p: 2,
-          maxHeight: '60vh',
-          overflowY: 'auto',
-          fontFamily: c.font.mono,
-          fontSize: '0.78rem',
-          color: c.text.primary,
-          whiteSpace: 'pre-wrap',
-          wordBreak: 'break-word',
-          bgcolor: c.bg.surface,
-        }}
-      >
-        {content || (
+      <Box sx={{ p: 2, bgcolor: c.bg.surface }}>
+        {original === undefined ? (
           <Typography sx={{ color: c.text.tertiary, fontSize: '0.85rem', fontStyle: 'italic' }}>
             This pasted text is no longer available. Re-paste to restore it.
           </Typography>
+        ) : (
+          <TextField
+            value={draft}
+            onChange={(e) => handleChange(e.target.value)}
+            multiline
+            fullWidth
+            minRows={6}
+            maxRows={20}
+            autoFocus
+            sx={{
+              '& .MuiInputBase-root': {
+                fontFamily: c.font.mono,
+                fontSize: '0.78rem',
+                color: c.text.primary,
+                alignItems: 'flex-start',
+              },
+              '& .MuiOutlinedInput-notchedOutline': { borderColor: c.border.subtle },
+            }}
+          />
         )}
       </Box>
     </Dialog>