diff --git a/docker-compose.yml b/docker-compose.yml
index 61c514f..a69a403 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -160,6 +160,7 @@ services:
       LOG_LEVEL: "${LOG_LEVEL}"
       KOKORO_URL: "${KOKORO_URL}"
       KOKORO_VOICE: "${KOKORO_VOICE}"
+      GLITCHTIP_DSN: "${GLITCHTIP_DSN}"
     healthcheck:
       test: ["CMD", "/healthcheck", "http://localhost:8080/health"]
       interval: 15s
@@ -167,7 +168,11 @@ services:
       retries: 3
 
   # ─── Runner (background task worker) ─────────────────────────────────────────
+  # profiles: [runner] prevents accidental restart on `docker compose up -d`.
+  # The homelab runner (192.168.0.109) is the sole worker in production.
+  # To start explicitly: doppler run -- docker compose --profile runner up -d runner
   runner:
+    profiles: [runner]
     image: kalekber/libnovel-runner:${GIT_TAG:-latest}
     build:
       context: ./backend
@@ -211,6 +216,7 @@ services:
       # Kokoro-FastAPI TTS endpoint
       KOKORO_URL: "${KOKORO_URL}"
       KOKORO_VOICE: "${KOKORO_VOICE}"
+      GLITCHTIP_DSN: "${GLITCHTIP_DSN}"
     healthcheck:
       # The runner writes /tmp/runner.alive on every poll.
       # 120s = 2× the default 30s poll interval with generous headroom.
@@ -256,6 +262,11 @@ services:
       PUBLIC_MINIO_PUBLIC_URL: "${MINIO_PUBLIC_ENDPOINT}"
       # Valkey
       VALKEY_ADDR: "valkey:6379"
+      # Umami analytics
+      PUBLIC_UMAMI_WEBSITE_ID: "${PUBLIC_UMAMI_WEBSITE_ID}"
+      PUBLIC_UMAMI_SCRIPT_URL: "${PUBLIC_UMAMI_SCRIPT_URL}"
+      # GlitchTip client + server-side error tracking
+      PUBLIC_GLITCHTIP_DSN: "${PUBLIC_GLITCHTIP_DSN}"
     healthcheck:
       test: ["CMD", "wget", "-qO-", "http://127.0.0.1:3000/health"]
       interval: 15s
@@ -556,7 +567,7 @@ services:
       GOTIFY_DEFAULTUSER_PASS: "${GOTIFY_ADMIN_PASS}"
       GOTIFY_SERVER_PORT: "80"
     healthcheck:
-      test: ["CMD", "wget", "-qO-", "http://localhost:80/health"]
+      test: ["CMD", "curl", "-sf", "http://localhost:80/health"]
       interval: 15s
       timeout: 5s
       retries: 5
diff --git a/ui/src/routes/+layout.svelte b/ui/src/routes/+layout.svelte
index fa2e357..793e86e 100644
--- a/ui/src/routes/+layout.svelte
+++ b/ui/src/routes/+layout.svelte
@@ -171,10 +171,10 @@
 	<meta name="viewport" content="width=device-width, initial-scale=1" />
 	<title>libnovel</title>
 	<!-- Umami analytics — no-op when PUBLIC_UMAMI_WEBSITE_ID is unset -->
-	{#if env.PUBLIC_UMAMI_WEBSITE_ID}
+	{#if env.PUBLIC_UMAMI_WEBSITE_ID && env.PUBLIC_UMAMI_SCRIPT_URL}
 		<script
 			defer
-			src="https://analytics.libnovel.cc/script.js"
+			src={env.PUBLIC_UMAMI_SCRIPT_URL}
 			data-website-id={env.PUBLIC_UMAMI_WEBSITE_ID}
 		></script>
 	{/if}
diff --git a/ui/src/routes/glitchtip-test/+page.server.ts b/ui/src/routes/glitchtip-test/+page.server.ts
new file mode 100644
index 0000000..54051fd
--- /dev/null
+++ b/ui/src/routes/glitchtip-test/+page.server.ts
@@ -0,0 +1,10 @@
+import type { PageServerLoad } from './$types';
+
+export const load: PageServerLoad = async ({ url }) => {
+	if (url.searchParams.get('server_error') === '1') {
+		// This unhandled throw is caught by handleError in hooks.server.ts,
+		// which forwards it to GlitchTip via Sentry.captureException.
+		throw new Error('GlitchTip server-side test error — ' + new Date().toISOString());
+	}
+	return {};
+};
diff --git a/ui/src/routes/glitchtip-test/+page.svelte b/ui/src/routes/glitchtip-test/+page.svelte
new file mode 100644
index 0000000..9234868
--- /dev/null
+++ b/ui/src/routes/glitchtip-test/+page.svelte
@@ -0,0 +1,48 @@
+<script lang="ts">
+	import * as Sentry from '@sentry/sveltekit';
+	import { Button } from '$lib/components/ui/button';
+
+	function throwClientError() {
+		throw new Error('GlitchTip client-side test error — ' + new Date().toISOString());
+	}
+
+	function captureManual() {
+		Sentry.captureException(
+			new Error('GlitchTip manual capture test — ' + new Date().toISOString())
+		);
+		alert('Manually captured exception sent to GlitchTip.');
+	}
+</script>
+
+<div class="max-w-lg mx-auto py-16 flex flex-col gap-6">
+	<h1 class="text-2xl font-bold text-zinc-100">GlitchTip Test Page</h1>
+	<p class="text-zinc-400 text-sm">
+		Use the buttons below to fire test errors. Check
+		<a
+			href="https://errors.libnovel.cc"
+			target="_blank"
+			rel="noopener noreferrer"
+			class="text-amber-400 hover:text-amber-300 underline">errors.libnovel.cc</a
+		> to confirm they arrive.
+	</p>
+
+	<div class="flex flex-col gap-3">
+		<!-- Triggers an unhandled JS exception → caught by handleError in hooks.client.ts -->
+		<Button variant="destructive" onclick={throwClientError}>
+			Throw unhandled client-side error
+		</Button>
+
+		<!-- Sends an exception directly via Sentry.captureException -->
+		<Button variant="outline" onclick={captureManual}>
+			Manually capture exception (Sentry.captureException)
+		</Button>
+
+		<!-- SSR load error — visit this URL to trigger a server-side throw -->
+		<a
+			href="/glitchtip-test?server_error=1"
+			class="text-sm text-zinc-400 hover:text-amber-400 underline text-center"
+		>
+			Trigger server-side load error (navigate here with ?server_error=1)
+		</a>
+	</div>
+</div>