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/__tests__/DocumentTitle.test.tsx

@@ -34,5 +34,13 @@ describe("DocumentTitle", () => {
     expect(titleFor("/")).toMatch(/^Dashboard · /);
     expect(titleFor("/sessions")).toMatch(/^Sessions · /);
     expect(titleFor("/settings")).toMatch(/^Settings · /);
+    expect(titleFor("/artifacts")).toMatch(/^Artifacts · /);
+    expect(titleFor("/files")).toMatch(/^Files · /);
+    expect(titleFor("/admin")).toMatch(/^Administration · /);
+    expect(titleFor("/snapshot/abc")).toMatch(/^Snapshot · /);
+  });
+
+  it("titles an unknown route as not found", () => {
+    expect(titleFor("/nope")).toMatch(/^Not found · /);
   });
 });

client/src/components/__tests__/StatusBar.test.tsx

@@ -162,7 +162,7 @@ describe("StatusBar", () => {
     const conn = screen.getByRole("button", { name: /Live/ });
     expect(conn).toHaveTextContent(`v${__APP_VERSION__}`);
     const cost = await screen.findByText("Today $1.23 (12.3M Tokens)");
-    expect(api.pricing.totalCost).toHaveBeenCalledWith({ date: today() });
+    expect(api.pricing.totalCost).toHaveBeenCalledWith({ date: today(), mine: true });
     expect(cost).toHaveAttribute(
       "title",
       "Claude Opus 4.8: 12.0M · $1.20\nClaude Haiku 4.5: 300.0K · $0.03"