fix(monitoring): Overview's middle sections are one line each, as drawn

The KPI row already matched the wireframe, but the two sections under it did
not, which is what still read as "unchanged":

  * TÀI NGUYÊN was four stretched columns — on a 1900px screen each value sat
    at the far right of its quarter, with a 700px progress bar drawn as a rule
    between. It is now one line: CPU 0% · Bộ nhớ 141 MB · Disk I/O 1 MB/s ·
    Mạng 1 KB/s, packed left. 130px → 57px. The bars are kept and still
    updated, just not drawn.

  * SANDBOX and QUYỀN were two four-row columns side by side. The wireframe
    draws ONE section with one line, so they are merged: the summary line
    carries file system · network · process · resource limits, and both the
    sandbox rows (ID, created, uptime) and the permission rows sit behind a
    "Chi tiết" fold. Nothing is dropped — 168px → 80px closed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

i18n.py

@@ -2388,6 +2388,10 @@ STRINGS: Dict[str, Dict[str, str]] = {
     "monitoring.col_action": {"en": "Action", "ja": "アクション", "vi": "Hành động"},
     # The fourth KPI tile on Overview, as the wireframe labels it.
     "monitoring.overview_calls": {"en": "Calls", "ja": "呼び出し", "vi": "Lượt gọi"},
+    # The fold under the Sandbox summary line — the wireframe shows only the
+    # summary, so the ID / created / uptime / limits rows live behind this.
+    "monitoring.overview_sbx_detail": {
+        "en": "Details", "ja": "詳細", "vi": "Chi tiết"},
     "monitoring.col_detail": {"en": "Detail", "ja": "詳細", "vi": "Chi tiết"},
     "monitoring.col_account": {"en": "Account", "ja": "アカウント", "vi": "Tài khoản"},
     "monitoring.col_machine": {"en": "Machine", "ja": "マシン", "vi": "Máy"},