feat: integration/webhook counts in project overview

ProjectOverview gains integration_count + webhook_count (enabled only);
dashboard Resources list gets an Integrations row linking to the new
view. Covers the "dashboard widget if cheap" Phase 4 item.

Authored By: TDvorak <[email protected]>

packages/api-client/src/generated/models/ProjectOverview.ts

@@ -15,5 +15,13 @@ export type ProjectOverview = {
     pending_invitation_count: number;
     audit_events_24h: number;
     last_audit_at?: string | null;
+    /**
+     * Connectors attached to the project.
+     */
+    integration_count: number;
+    /**
+     * Enabled outbound webhooks.
+     */
+    webhook_count: number;
 };