fix(platform+admin-web): 3 bugs in delivery retry + webhooks delivery loading

Backend (delivery retry):
- Use NotFoundError (404) instead of BadRequestError (400) for missing log doc
- Add telegram + slack retry support (was email-only, threw error for others)

Frontend (delivery page):
- Add pk field to DeliveryEntry interface
- Pass pk query param in retry call so backend can look up the doc
- Fix handleRetry to accept full entry object instead of just id

Frontend (webhooks page):
- Parallelize delivery fetches with Promise.allSettled (was sequential for loop)
- Significant page load improvement for subscriptions with many deliveries

dashboards/admin-web/src/app/(dashboard)/delivery/page.tsx

@@ -24,6 +24,7 @@ import {
 
 interface DeliveryEntry {
   id: string;
+  pk: string;
   template: string;
   recipient: string;
   channel: string;
@@ -71,8 +72,10 @@ export default function DeliveryPage() {
     void loadData();
   }, [loadData]);
 
-  async function handleRetry(id: string) {
-    await apiFetch(`logs/${id}/retry`, { method: 'POST' });
+  async function handleRetry(entry: DeliveryEntry) {
+    await apiFetch(`logs/${entry.id}/retry?pk=${encodeURIComponent(entry.pk)}`, {
+      method: 'POST',
+    });
     loadData();
   }
 
@@ -191,7 +194,7 @@ export default function DeliveryPage() {
                       <TableCell>
                         {e.status === 'failed' && (
                           <button
-                            onClick={() => handleRetry(e.id)}
+                            onClick={() => handleRetry(e)}
                             className="text-xs text-blue-600 hover:underline"
                           >
                             Retry

dashboards/admin-web/src/app/(dashboard)/webhooks/page.tsx

@@ -81,21 +81,22 @@ export default function WebhooksPage() {
         : [];
     setSubs(subsList);
 
-    // Load deliveries per-subscription (backend only has GET /webhooks/subscriptions/:id/deliveries)
-    const allDeliveries: Delivery[] = [];
-    for (const sub of subsList.slice(0, 10)) {
-      try {
-        const dData = await apiFetch(`subscriptions/${sub.id}/deliveries`);
-        const items: Delivery[] = Array.isArray(dData?.deliveries)
-          ? dData.deliveries
-          : Array.isArray(dData)
-            ? dData
-            : [];
-        allDeliveries.push(...items);
-      } catch {
-        // best-effort
-      }
-    }
+    // Load deliveries per-subscription in parallel (backend only has per-sub endpoint)
+    const results = await Promise.allSettled(
+      subsList.slice(0, 10).map(sub =>
+        apiFetch(`subscriptions/${sub.id}/deliveries`).then((dData: Record<string, unknown>) => {
+          const items: Delivery[] = Array.isArray(dData?.deliveries)
+            ? (dData.deliveries as Delivery[])
+            : Array.isArray(dData)
+              ? (dData as unknown as Delivery[])
+              : [];
+          return items;
+        })
+      )
+    );
+    const allDeliveries = results
+      .filter((r): r is PromiseFulfilledResult<Delivery[]> => r.status === 'fulfilled')
+      .flatMap(r => r.value);
     setDeliveries(allDeliveries.sort((a, b) => b.createdAt.localeCompare(a.createdAt)));
     setLoading(false);
   }, []);

services/platform-service/src/modules/delivery/routes.ts

@@ -1,6 +1,6 @@
 import type { FastifyInstance } from 'fastify';
 import { extractAuth } from '../../lib/auth.js';
-import { BadRequestError } from '../../lib/errors.js';
+import { BadRequestError, NotFoundError } from '../../lib/errors.js';
 import {
   SendEmailSchema,
   SendSlackSchema,
@@ -130,7 +130,7 @@ export async function deliveryRoutes(app: FastifyInstance) {
 
     // Look up the original log entry
     const original = await repo.getDeliveryLog(id, pk);
-    if (!original) throw new BadRequestError(`Delivery log '${id}' not found`);
+    if (!original) throw new NotFoundError(`Delivery log '${id}' not found`);
     if (original.status !== 'failed') {
       throw new BadRequestError(
         `Can only retry failed deliveries (current status: ${original.status})`
@@ -152,6 +152,26 @@ export async function deliveryRoutes(app: FastifyInstance) {
       return { success: result.success, messageId: result.messageId, error: result.error };
     }
 
+    if (original.channel === 'telegram') {
+      const result = await dispatchTelegram({
+        text: (original.metadata as Record<string, string>)?.text ?? original.subject ?? '',
+        productId: original.productId,
+        chatId: original.to,
+        userId: original.userId,
+      });
+      return { success: result.success, messageId: result.messageId, error: result.error };
+    }
+
+    if (original.channel === 'slack') {
+      const result = await dispatchSlack({
+        text: (original.metadata as Record<string, string>)?.text ?? original.subject ?? '',
+        productId: original.productId,
+        channel: original.to,
+        userId: original.userId,
+      });
+      return { success: result.success, messageId: result.messageId, error: result.error };
+    }
+
     throw new BadRequestError(`Retry not supported for channel '${original.channel}'`);
   });