feat(demo): add reset UI and wire truthful integration status into pages

Add a "Reset demo data" action to the sidebar (Operations Manager only,
explicit confirmation, progress, error handling) -- POST /api/v1/demo/reset
already existed and was already role-gated server-side, but had no UI
trigger. Reset invalidates the acting session server-side, so the flow
signs the user out and returns them to login afterward.

Wire the new GET /api/v1/integrations/status into Automation.tsx and
Dashboard.tsx so both show the aggregate n8n state instead of the most
recent event's status, and the MCP Hub card reflects the actual
registration_enabled setting instead of a hardcoded "not configured" label.

frontend/src/pages/Automation.tsx

@@ -1,10 +1,18 @@
 import { useCallback, useEffect, useState } from "react";
 import { api, ApiError } from "../api/client";
-import type { AutomationRun, KnowledgeHealth } from "../api/types";
+import type { AutomationRun, IntegrationStatus, KnowledgeHealth } from "../api/types";
 import { StatusBadge } from "../components/Badge";
 import { useAuth } from "../context/AuthContext";
 import { ErrorState, IntegrationMark, LoadingState, PageHeader, SectionHeading } from "../components/PageChrome";
 
+const N8N_STATE_LABEL: Record<IntegrationStatus["n8n"]["state"], string> = {
+  disabled: "disabled",
+  unavailable: "unavailable",
+  degraded: "degraded",
+  operational: "available",
+  no_evidence: "no_events",
+};
+
 export function Automation() {
   const { user } = useAuth();
   const [runs, setRuns] = useState<AutomationRun[] | null>(null);
@@ -13,6 +21,7 @@ export function Automation() {
   const [retryError, setRetryError] = useState<string | null>(null);
   const [retrying, setRetrying] = useState<string | null>(null);
   const [knowledge, setKnowledge] = useState<KnowledgeHealth | null>(null);
+  const [integrationStatus, setIntegrationStatus] = useState<IntegrationStatus | null>(null);
 
   const load = useCallback(() => {
     setRuns(null);
@@ -39,12 +48,24 @@ export function Automation() {
     api.get<KnowledgeHealth>("/api/v1/knowledge/status").then(setKnowledge).catch(() => setKnowledge(null));
   }, []);
 
+  const loadIntegrationStatus = useCallback(() => {
+    api
+      .get<IntegrationStatus>("/api/v1/integrations/status")
+      .then(setIntegrationStatus)
+      .catch(() => setIntegrationStatus(null));
+  }, []);
+
+  useEffect(() => {
+    loadIntegrationStatus();
+  }, [loadIntegrationStatus]);
+
   async function handleRetry(eventId: string) {
     setRetryError(null);
     setRetrying(eventId);
     try {
       await api.post(`/api/v1/workflows/${eventId}/retry`);
       load();
+      loadIntegrationStatus();
     } catch (err) {
       setRetryError(err instanceof ApiError ? err.message : "Could not retry this delivery.");
     } finally {
@@ -66,9 +87,33 @@ export function Automation() {
       <PageHeader eyebrow="Assurance / Integrations" title="Integration control" description="Monitor delivery health, graceful degradation and retryable workflow events." />
 
       <section className="integration-cards" aria-label="Integration health">
-        <article><IntegrationMark kind="n8n" /><div><span className="integration-kicker">Orchestration</span><h2>n8n delivery</h2><p>Return events are committed locally first and then delivered through the outbox.</p></div><StatusBadge status={runs?.[0]?.status ?? "no_events"} /></article>
+        <article>
+          <IntegrationMark kind="n8n" />
+          <div>
+            <span className="integration-kicker">Orchestration</span>
+            <h2>n8n delivery</h2>
+            <p>
+              {integrationStatus
+                ? `${integrationStatus.n8n.succeeded} succeeded · ${integrationStatus.n8n.failed} failed · ${integrationStatus.n8n.pending} pending · ${integrationStatus.n8n.delivering} delivering.`
+                : "Return events are committed locally first and then delivered through the outbox."}
+            </p>
+          </div>
+          <StatusBadge status={integrationStatus ? N8N_STATE_LABEL[integrationStatus.n8n.state] : (runs?.[0]?.status ?? "no_events")} />
+        </article>
         <article><IntegrationMark kind="rag" /><div><span className="integration-kicker">Knowledge</span><h2>RAGcore</h2><p>{knowledge ? `${knowledge.document_count} procedures indexed in ${knowledge.collection}.` : "Health evidence is currently unavailable."}</p></div><StatusBadge status={knowledge?.available ? "available" : "unavailable"} /></article>
-        <article><IntegrationMark kind="mcp" /><div><span className="integration-kicker">Tool gateway</span><h2>MCP Hub</h2><p>No active MobilityOps adapter is configured in this proof of concept.</p></div><StatusBadge status="not_configured" /></article>
+        <article>
+          <IntegrationMark kind="mcp" />
+          <div>
+            <span className="integration-kicker">Tool gateway</span>
+            <h2>MCP Hub</h2>
+            <p>
+              {integrationStatus?.mcp_hub.registration_enabled
+                ? "Registration is enabled for this deployment."
+                : "No active MobilityOps adapter is configured in this proof of concept."}
+            </p>
+          </div>
+          <StatusBadge status={integrationStatus?.mcp_hub.state ?? "not_configured"} />
+        </article>
       </section>
 
       <SectionHeading title="Delivery ledger" description="Persisted outbox attempts with the latest failure evidence." />