feat(dashboard): support ?view=domain deep-link

[vector-field]

What

Adds a ?view=domain URL parameter to the dashboard so it can open directly on the domain flow view instead of always starting on the structural graph.

Why

Today the dashboard always loads on the structural view, and the only way to reach the domain view is to click the Domain toggle in the toolbar. That makes it impossible to bookmark or share a link that lands on the domain flow, or to have tooling launch the dashboard pointed straight at a domain graph. After running /understand-domain, jumping to the domain view is a common next step.

How

In the domain-graph.json fetch handler in App.tsx, after the domain graph is set in the store, check for ?view=domain and switch viewMode to "domain".

if (result.success && result.data) {
  setDomainGraph(result.data);
  // Deep-link: `?view=domain` opens straight on the domain flow view.
  if (new URLSearchParams(window.location.search).get("view") === "domain") {
    useDashboardStore.getState().setViewMode("domain");
  }
}

The switch is intentionally applied in the fetch handler, not at init — the domain view can't render until the domain graph is loaded into the store (App falls back to structural otherwise). It also composes cleanly with the existing token param, which is stripped from the URL separately while view persists.

Notes

• No new imports — useDashboardStore is already used the same way a few lines above for the knowledge view.
• Scope is minimal and additive: absent the param, behavior is unchanged (still defaults to structural).
• Only domain is handled here since structural is the default and knowledge is auto-selected for knowledge graphs; happy to extend to a general view switch if preferred.

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