Standalone resource pages — Gateway & Reference grant

[R-Lawton]

Standalone create/edit/delete pages for Gateway and Reference grant resources, accessible from nav items and overview table actions. Reuses form components from the infrastructure setup wizard (#3).

MCP Gateway page:

• Tabs — Overview | YAML | Definition | Policies
• Overview tab (form):
  • TextInput — MCP Gateway name (required), Namespace (required)
  • Select — Gateway class
  • Listeners section (vertical tabs per listener):
    • TextInput — Listener name, Port
    • Select — Protocol, TLS certificate
    • Radio — Allow routes from namespaces (All / Same / Custom)
  • Button (secondary) — "Add listener"
  • Switch — Private Gateway IP address
  • Switch — Enable AI payload inspection
• YAML tab: CodeEditor with pre-populated Gateway template
• Actions Dropdown (kebab): Edit MCP, Delete MCP
• Button (primary): Save, Button (secondary): Cancel
• Delete: confirmation Modal → k8sDelete

Reference grant page:

• Tabs — Overview | YAML | Policies
• Overview tab (form):
  • TextInput — Grant name (required), Namespace (required)
  • Grant access from these namespaces section (vertical tabs per entry):
    • TextInput — From namespace
    • Select — Resource kind (MCPGatewayExtension)
  • Button (secondary) — "Add access for namespace"
  • To this Gateway section:
    • TextInput — Namespace
    • Select — Resource kind (Gateway)
• YAML tab: CodeEditor
• Delete: confirmation Modal → k8sDelete
• Button (primary): Save, Button (secondary): Cancel

K8s resources:

• Gateway (gateway.networking.k8s.io/v1) — k8sCreate / k8sGet / k8sUpdate / k8sDelete
• ReferenceGrant (gateway.networking.k8s.io/v1beta1) — k8sCreate / k8sGet / k8sUpdate / k8sDelete

Designs: https://www.figma.com/proto/oizjCN6EVed31dW71YXS3K/RHCL-MCP?node-id=1-25180

Definition of done

• Unit tests (Jest)
• E2e tests (Playwright)
• Documentation updated