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>

server/routes/hooks.js

@@ -1230,6 +1230,17 @@ const processEventTx = db.transaction((hookType, data, tool = "claude") => {
     created_at: new Date().toISOString(),
   };
   broadcast("new_event", event);
+  // A claude.ai page the session published goes into its owner's Artifacts.
+  if (hookType === "PostToolUse" && toolName === "Artifact" && tool !== "codex") {
+    try {
+      const row = require("../lib/artifacts").captureFromHook(sessionId, data);
+      if (row) {
+        broadcast("artifact_changed", { id: row.id, ownerId: row.owner_id, shared: false });
+      }
+    } catch (err) {
+      console.warn("[artifacts] capture failed:", err.message);
+    }
+  }
   return event;
 });