Deep Route Connection Audit

Same-shell connector plan

{
  "issue": "Arena links currently navigate to /agent-arena/shell, but some do not hydrate the selected route as an internal tab.",
  "goal": "Arena links should become same-shell tab actions when already inside the shell, and deep-link hydration when opened from outside.",
  "requirements": [
    "preserve direct route links",
    "add same-shell action metadata",
    "do not iframe logged-in/external dashboards",
    "route permissions stay separate from visual shell layout",
    "tab actions work uniformly unless intentionally overridden",
    "circular routes get flagged before subtraction",
    "unique deep routes get promoted after verification"
  ],
  "nextPatch": "59R should bind data-arena-open-route attributes to shell tab actions and seed mini remote controls."
}