diff --git a/apps/api/src/routes/invoices.ts b/apps/api/src/routes/invoices.ts
index a5c0d95..91ac4ee 100644
--- a/apps/api/src/routes/invoices.ts
+++ b/apps/api/src/routes/invoices.ts
@@ -130,7 +130,17 @@ invoicesRouter.get("/:id", async (c) => {
     db.select().from(invoiceTipSplits).where(eq(invoiceTipSplits.invoiceId, id)),
   ]);
 
-  return c.json({ ...invoice, lineItems, tipSplits });
+  let cardLast4: string | null = null;
+  let paymentStatus: string | null = null;
+  if (invoice.stripePaymentIntentId) {
+    const details = await getPaymentIntentDetails(invoice.stripePaymentIntentId);
+    if (details) {
+      cardLast4 = details.cardLast4;
+      paymentStatus = details.paymentStatus;
+    }
+  }
+
+  return c.json({ ...invoice, lineItems, tipSplits, cardLast4, paymentStatus });
 });
 
 // Save tip splits for an invoice (replaces existing splits)
@@ -450,9 +460,6 @@ invoicesRouter.post(
     if (invoice.status !== "paid") {
       return c.json({ error: "Refund only allowed on paid invoices" }, 422);
     }
-    if (!invoice.stripePaymentIntentId) {
-      return c.json({ error: "No Stripe payment intent found for this invoice" }, 422);
-    }
 
     return await db.transaction(async (tx) => {
       if (body.idempotencyKey) {
@@ -465,17 +472,25 @@ invoicesRouter.post(
         }
       }
 
-      const result = await processRefund(id, body.amountCents);
-      if (!result) return c.json({ error: "Refund failed" }, 500);
+      let refundId: string;
+
+      if (invoice.stripePaymentIntentId) {
+        const result = await processRefund(id, body.amountCents);
+        if (!result) return c.json({ error: "Refund failed" }, 500);
+        refundId = result.refundId;
+      } else {
+        // Manual refund — no Stripe call needed
+        refundId = `manual_${id}_${Date.now()}`;
+      }
 
       await tx.insert(refunds).values({
         invoiceId: id,
-        stripeRefundId: result.refundId,
+        stripeRefundId: refundId,
         idempotencyKey: body.idempotencyKey ?? null,
         amountCents: body.amountCents ?? null,
       });
 
-      return c.json({ refundId: result.refundId });
+      return c.json({ refundId });
     });
   }
 );
diff --git a/apps/web/src/pages/Invoices.tsx b/apps/web/src/pages/Invoices.tsx
index 246a9be..0eceb4c 100644
--- a/apps/web/src/pages/Invoices.tsx
+++ b/apps/web/src/pages/Invoices.tsx
@@ -487,7 +487,7 @@ const [showRefundDialog, setShowRefundDialog] = useState(false);
             </div>
           )}
           <div style={{ display: "flex", gap: "0.5rem", justifyContent: "flex-end" }}>
-            {invoice.status === "paid" && invoice.stripePaymentIntentId && !invoice.stripeRefundId && isManager && (
+            {invoice.status === "paid" && !invoice.stripeRefundId && isManager && (
               <button onClick={() => setShowRefundDialog(true)} style={{ ...btnStyle, color: "#fff", backgroundColor: "#7c3aed", borderColor: "#7c3aed" }}>
                 Refund
               </button>
diff --git a/charts/groombook/templates/_helpers.tpl b/charts/groombook/templates/_helpers.tpl
index 9c97648..93f19ad 100644
--- a/charts/groombook/templates/_helpers.tpl
+++ b/charts/groombook/templates/_helpers.tpl
@@ -119,3 +119,10 @@ uri
 database-url
 {{- end -}}
 {{- end }}
+
+{{/*
+Auth secret name — always use groombook-auth (sealed secret name)
+*/}}
+{{- define "groombook.authSecretName" -}}
+{{- printf "%s" "groombook-auth" }}
+{{- end }}
diff --git a/charts/groombook/templates/api-deployment.yaml b/charts/groombook/templates/api-deployment.yaml
index aaee7b0..6283210 100644
--- a/charts/groombook/templates/api-deployment.yaml
+++ b/charts/groombook/templates/api-deployment.yaml
@@ -50,6 +50,27 @@ spec:
             - name: OIDC_AUDIENCE
               value: {{ .Values.api.env.oidcAudience | quote }}
             {{- end }}
+            {{- if .Values.api.env.internalBaseUrl }}
+            - name: OIDC_INTERNAL_BASE
+              value: {{ .Values.api.env.internalBaseUrl | quote }}
+            {{- end }}
+            - name: BETTER_AUTH_URL
+              value: {{ .Values.api.env.betterAuthUrl | quote }}
+            - name: OIDC_CLIENT_ID
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "groombook.authSecretName" . }}
+                  key: OIDC_CLIENT_ID
+            - name: OIDC_CLIENT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "groombook.authSecretName" . }}
+                  key: OIDC_CLIENT_SECRET
+            - name: BETTER_AUTH_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "groombook.authSecretName" . }}
+                  key: BETTER_AUTH_SECRET
             - name: DATABASE_URL
               valueFrom:
                 secretKeyRef:
diff --git a/charts/groombook/values.yaml b/charts/groombook/values.yaml
index 5f888a5..0e85682 100644
--- a/charts/groombook/values.yaml
+++ b/charts/groombook/values.yaml
@@ -18,6 +18,8 @@ api:
     corsOrigin: ""
     oidcIssuer: ""
     oidcAudience: groombook
+    betterAuthUrl: ""
+    internalBaseUrl: ""
     port: "3000"
   service:
     type: ClusterIP
diff --git a/packages/db/src/seed.ts b/packages/db/src/seed.ts
index dca21d4..4563ce7 100644
--- a/packages/db/src/seed.ts
+++ b/packages/db/src/seed.ts
@@ -978,6 +978,7 @@ async function seed() {
         const invoiceStatus = rand() < 0.95 ? "paid" as const : "pending" as const;
         const paidAt = invoiceStatus === "paid" ? new Date(endTime.getTime() + randInt(5, 30) * 60 * 1000) : null;
 
+        const stripePaymentIntentId = invoiceStatus === "paid" && rand() < 0.2 ? `pi_test_${uuid().replace(/-/g, "").slice(0, 24)}` : null;
         invoiceBatch.push({
           id: invoiceId,
           appointmentId: apptId,
@@ -989,6 +990,7 @@ async function seed() {
           status: invoiceStatus,
           paymentMethod: invoiceStatus === "paid" ? pick(["cash", "card", "card", "card", "check"]) as "cash" | "card" | "check" : null,
           paidAt,
+          stripePaymentIntentId,
           notes: rand() < 0.05 ? "Added extra service at checkout" : null,
         });
 
@@ -1092,13 +1094,14 @@ async function seed() {
       const taxCents = Math.round(effectivePrice * 0.08);
       const totalCents = effectivePrice + taxCents + tipCents;
       const paidAt = new Date(endTime.getTime() + randInt(5, 30) * 60 * 1000);
+      const stripePaymentIntentId = rand() < 0.2 ? `pi_test_${uuid().replace(/-/g, "").slice(0, 24)}` : null;
 
       invoiceBatch.push({
         id: invoiceId, appointmentId: apptId, clientId,
         subtotalCents: effectivePrice, taxCents, tipCents, totalCents,
         status: "paid" as const,
         paymentMethod: pick(["cash", "card", "card", "card", "check"]) as "cash" | "card" | "check",
-        paidAt, notes: null,
+        paidAt, stripePaymentIntentId, notes: null,
       });
       lineItemBatch.push({
         id: uuid(), invoiceId, description: svc.name, quantity: 1,