feat(drill): ProviderDrawer with Overview tab + DrillDrawerHeader shell

src/components/ProviderDrawer/ProviderOverview.tsx

@@ -0,0 +1,43 @@
+import type { Provider } from "@/types";
+import { fmt } from "@/lib/format";
+
+/**
+ * Overview tab content for the provider drill-down drawer (SP21
+ * Task 2.2). Renders the base provider fields in a two-column grid:
+ *
+ *   - Identity: NPI, Tax ID, address, phone
+ *   - Activity: claim count, outstanding AR
+ *
+ * Subsequent tasks (Phase 3) will hang ``recent_claims`` and
+ * ``recent_activity`` off this surface; for now we only render the
+ * base fields the drawer needs to present "who is this provider and
+ * what's their activity shape" at a glance.
+ */
+export function ProviderOverview({ provider }: { provider: Provider }) {
+  return (
+    <div className="space-y-4">
+      <div className="grid grid-cols-2 gap-3">
+        <Field label="NPI" value={provider.npi} mono />
+        <Field label="Tax ID" value={provider.taxId} mono />
+        <Field
+          label="Address"
+          value={`${provider.address}, ${provider.city}, ${provider.state} ${provider.zip}`}
+        />
+        <Field label="Phone" value={provider.phone} mono />
+      </div>
+      <div className="grid grid-cols-2 gap-3 pt-3 border-t border-border/30">
+        <Field label="Claims" value={fmt.num(provider.claimCount)} mono />
+        <Field label="Outstanding AR" value={fmt.usd(provider.outstandingAr)} mono />
+      </div>
+    </div>
+  );
+}
+
+function Field({ label, value, mono }: { label: string; value: string; mono?: boolean }) {
+  return (
+    <div>
+      <div className="eyebrow">{label}</div>
+      <div className={`text-[13px] mt-1 ${mono ? "display mono" : ""}`}>{value}</div>
+    </div>
+  );
+}