fix: per-user Today, native paste and drop on a local machine

- Today's spend in the status bar and the Claude Code statusline is the
  caller's own (`GET /api/pricing/cost?mine=1`, scope.ownSessionWhere), not
  every user's sum for an admin or analyst.
- A screenshot pasted into a local claude pane is sent as Claude Code's own
  image-paste key: Alt+V on Windows (Ctrl+V did nothing there), ^V elsewhere,
  and only when the machine can read its clipboard (wl-paste/xclip + a
  display on Linux), else it is uploaded (GET /api/run/native-paste {key}).
- A file manager's files pasted or dropped on a local browser go in by their
  own paths, read from the OS clipboard or the file manager's selection
  (server/lib/file-manager.js, POST /api/run/clipboard-files and
  /selected-files): no upload, no size limit. A copied image file is pasted
  by path, text that comes with a picture of it (spreadsheet cells) is
  pasted as text, Windows paths go in as `C:/…` mentions.
- Tab titles for Snapshot, Artifacts, Files and Administration.
- An npm tool AgentHub installed under ~/.local is updated there, not by its
  own updater into npm's global prefix.

client/src/components/StatusBar.tsx

@@ -5,7 +5,8 @@
  * — with a green dot while a newer release is out —, how many SESSIONS are
  * running and how many need the user (`GET /api/sessions?status=active` and
  * `?awaiting=1` — the Dashboard's Needs-you rule —, re-read on session
- * messages), and today's spend — `GET /api/pricing/cost?date=<local date>` — and, on the
+ * messages), and today's spend — `GET /api/pricing/cost?date=<local date>&mine=1`, the
+ * user's OWN spend even for an admin — and, on the
  * Workspace page, the open workspace's total (`?lane=` on the same call: the
  * sessions it owns) and the shown session's (`GET /api/pricing/cost/:id` for
  * the URL's `session`, or the focused pane's session from the page's run poll,
@@ -403,7 +404,7 @@ export function StatusBar({
     const gen = costGen.current;
     const live = () => gen === costGen.current;
     api.pricing
-      .totalCost({ date: localDate() })
+      .totalCost({ date: localDate(), mine: true })
       .then((r) => live() && setToday(r))
       .catch(() => undefined);
     api.budgets