fix(api): harden reminder and webhook delivery

packages/api/src/lib/webhook-dispatcher.ts

@@ -7,6 +7,7 @@
  * Fire-and-forget — errors are logged, never thrown.
  */
 import { createHmac } from "node:crypto";
+import { logger } from "./logger.js";
 import { sendSlackNotification } from "./slack-notify.js";
 
 /** Available webhook event types. */
@@ -72,7 +73,7 @@ async function _dispatch(
 
     await Promise.allSettled(promises);
   } catch (err) {
-    console.error("[webhook-dispatcher] failed to dispatch:", err);
+    logger.error({ err, event }, "Failed to dispatch webhooks");
   }
 }
 
@@ -108,19 +109,23 @@ async function _sendToWebhook(
     const timeout = setTimeout(() => controller.abort(), 5_000);
 
     try {
-      await fetch(wh.url, {
+      const response = await fetch(wh.url, {
         method: "POST",
         headers,
         body,
         signal: controller.signal,
       });
+
+      if (!response.ok) {
+        throw new Error(`Webhook responded with HTTP ${response.status}`);
+      }
     } finally {
       clearTimeout(timeout);
     }
   } catch (err) {
-    console.error(
-      `[webhook-dispatcher] error sending to "${wh.name}" (${wh.id}):`,
-      err,
+    logger.warn(
+      { err, event, webhookId: wh.id, webhookName: wh.name, webhookUrl: wh.url },
+      "Webhook delivery failed",
     );
   }
 }