feat: v2.7.8 — Artifacts hub, clone related repos as extra folders, quieter resume prompt

- Artifacts (/artifacts): claude.ai pages sessions publish (captured from the
  Artifact tool's hook), pinned workspace files, skills and plugins, each
  kept as a snapshot; shared ones appear in a Hub and a skill or plugin
  installs into the viewer's own account (server/lib/artifacts.js,
  /api/artifacts, docs/plans/artifacts/).
- Workspace extra folders: clone one or more related repos beside the
  workspace and add them in one step (POST /api/lanes/:id/sources/clone).
- A pane that ended by itself while tmux kept running is no longer offered
  for resume (tmux.serverStartedAt in reconcileOrphans).
- Changes panel: a folder that is not a git repo opens on Files, and its
  files open from there.
- Plus the parallel sessions' work in this tree: File Explorer button in the
  panel header, user delete, RSA SSH keys, chat/terminal and pet fixes.

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

client/src/components/run/RunSetup.tsx

@@ -69,6 +69,7 @@ import {
   addAttachments,
   droppedAttachments,
   droppedSkill,
+  droppedText,
   SKILL_MIME,
   rememberUploads,
 } from "../../lib/promptAttach";
@@ -412,7 +413,8 @@ export function PromptEditor({
   // else a `bare` editor's parent, the box every caller draws around it and
   // its toolbar — not only on the textarea: a panel row (`ATTACH_MIME`)
   // becomes an `@path` chip, a skill (`SKILL_MIME`) the prompt's leading
-  // `/command`, a file is uploaded.
+  // `/command`, a file is uploaded, a local `file://` list an `@path` chip
+  // and any other text is inserted.
   const rootRef = useRef<HTMLDivElement | null>(null);
   const dropRef = useRef<(e: DragEvent) => void>(() => {});
   dropRef.current = (e) => {
@@ -425,6 +427,17 @@ export function PromptEditor({
       e.preventDefault();
       onChange(`/${skill} ${value.replace(/^\s+/, "")}`);
     } else if (attachImages(e.dataTransfer?.files)) e.preventDefault();
+    else {
+      // Only text (a file manager's or an editor's `file://` list, a
+      // selection, a link): what the terminal beneath would paste.
+      // On the textarea itself the browser inserts text at the drop point.
+      const dropped = droppedText(e.dataTransfer);
+      if (!dropped || ("text" in dropped && e.target === taRef.current)) return;
+      e.preventDefault();
+      if ("attachments" in dropped)
+        onImagesChange((prev) => addAttachments(prev, dropped.attachments));
+      else insert(dropped.text);
+    }
   };
   useEffect(() => {
     const zone =
@@ -433,7 +446,8 @@ export function PromptEditor({
     if (!zone) return;
     const over = (e: DragEvent) => {
       const types = e.dataTransfer?.types ?? [];
-      if (![ATTACH_MIME, SKILL_MIME, "Files"].some((m) => types.includes(m))) return;
+      const accepts = [ATTACH_MIME, SKILL_MIME, "Files", "text/uri-list", "text/plain"];
+      if (!accepts.some((m) => types.includes(m))) return;
       e.preventDefault();
       e.dataTransfer!.dropEffect = "copy";
     };