fix(chat): a file-manager copy pasted on a local browser attaches by its own path

Chrome gives a PASTE of a file manager's copy (Ctrl+C in Nautilus, Ctrl+V in
the chat) the files and their paths as plain text, but no text/uri-list —
only a drag carries that — so localCandidates found no path and every such
file was uploaded, and refused past the upload limit. Plain-text paths (or
file:// lines) whose names match the pasted files one for one are now
candidates too; sameFilesHere still has the server confirm each is the same
file (size) on this machine, so server mode and remote browsers upload as
before. The prompt box also attaches a file:// text paste with no file by
path, as the terminal already did (copiedFilePaths moved to promptAttach).

client/src/components/run/RunSetup.tsx

@@ -70,6 +70,7 @@ import {
   ATTACH_MIME,
   addAttachments,
   claudeMention,
+  copiedFilePaths,
   droppedAttachments,
   droppedSkill,
   droppedText,
@@ -452,6 +453,14 @@ export function PromptEditor({
     });
     return true;
   };
+  /** A file manager's copy pasted with no file beside it, only `file://`
+   *  text: attached by those paths, as the terminal pastes them. */
+  const pastedLocalFiles = (dt: DataTransfer | null | undefined) => {
+    const paths = isLocalBrowser() ? copiedFilePaths(dt) : null;
+    if (!paths) return false;
+    onImagesChange((prev) => addAttachments(prev, paths.map(localAttachment)));
+    return true;
+  };
   /** Dropped or pasted files: by their own paths when the browser is on the
    *  dashboard's machine and the server finds the same files there (a file
    *  manager hands over `file://` paths beside the bytes), else uploaded. */
@@ -675,6 +684,7 @@ export function PromptEditor({
           onKeyDown={handleKeyDown}
           onPaste={(e) => {
             if (attachDropped(e.clipboardData, e.clipboardData?.files)) e.preventDefault();
+            else if (pastedLocalFiles(e.clipboardData)) e.preventDefault();
             else {
               // A very long paste goes in as a text file, like Claude Desktop:
               // the prompt then carries its path, never the text (#68: a CLI's

client/src/components/run/TerminalView.tsx

@@ -65,14 +65,10 @@ import { useTheme } from "../../hooks/useTheme";
 import { terminalThemeFor } from "../../lib/terminalTheme";
 import { api } from "../../lib/api";
 import { writeClipboard } from "../../lib/clipboard";
-import {
-  MENU_CURSOR_ROW,
-  notePaneFocus,
-  notePaneOutput,
-  registerPane,
-} from "../../lib/panePaste";
+import { MENU_CURSOR_ROW, notePaneFocus, notePaneOutput, registerPane } from "../../lib/panePaste";
 import {
   claudePastes,
+  copiedFilePaths,
   droppedFilePaths,
   isLocalBrowser,
   localCandidates,
@@ -160,15 +156,6 @@ const hasFiles = (e: DragEvent) => Array.from(e.dataTransfer.types).includes("Fi
 const hasText = (e: DragEvent) =>
   !hasFiles(e) && Array.from(e.dataTransfer.types).includes("text/plain");
 
-/** The `file://` paths a paste carries as text — a file manager's copy — or
- *  null: its uri-list, else its plain text when every line is one. */
-function copiedFilePaths(dt: DataTransfer | null): string[] | null {
-  const text = dt?.getData("text/plain") ?? "";
-  if (droppedFilePaths(dt)) return droppedFilePaths(dt);
-  if (!/^file:\/\//.test(text.trim())) return null;
-  return droppedFilePaths({ getData: () => text } as unknown as DataTransfer);
-}
-
 interface TerminalViewProps {
   runId: string;
   wsBaseUrl: string;