minor refactoring of app startup sequence & some extra trivial matters

src/routes/health-manager/+page.svelte

@@ -1,22 +1,13 @@
 <script lang="ts">
-  import { onDestroy, onMount } from "svelte";
+  import { onMount } from "svelte";
   import { invoke } from "@tauri-apps/api/core";
-  import { listen } from "@tauri-apps/api/event";
+  import { page } from "$app/stores";
 
   let errorMessage = "";
-  let unlisten: (() => void) | null = null;
   let isRestarting = false;
 
-  onMount(async () => {
-    unlisten = await listen<string>("health-error", (event) => {
-      errorMessage = event.payload;
-    });
-  });
-
-  onDestroy(() => {
-    if (unlisten) {
-      unlisten();
-    }
+  onMount(() => {
+    errorMessage = $page.url.searchParams.get("err") || "";
   });
 
   const tryAgain = async () => {
@@ -34,41 +25,44 @@
 
 <div class="size-full p-4">
   <div class="flex flex-col gap-4 size-full justify-between">
-  <div class="flex flex-col gap-2">
-    <p class="text-md font-light">Something is not right...</p>
-    <p class="opacity-70 text-3xl font-bold">
-      Seems like the server is inaccessible. Check your network?
-    </p>
-    {#if errorMessage}
-      <p class="text-sm opacity-70 wrap-break-word">{errorMessage}</p>
-    {/if}
-  </div>
-  <div class="flex flex-row gap-2">
-    <button
-      class="btn"
-      class:btn-disabled={isRestarting}
-      disabled={isRestarting}
-      onclick={tryAgain}
-    >
-      {#if isRestarting}
-        Retrying…
-      {:else}
-        Try again
+    <div class="flex flex-col gap-4">
+      <div class="flex flex-col gap-2">
+        <p class="text-md font-light">Something is not right...</p>
+        <p class="opacity-70 text-3xl font-bold">
+          Seems like the server is inaccessible. Check your network?
+        </p>
+      </div>
+      {#if errorMessage}
+        <p class="text-xs opacity-70 wrap-break-word font-mono">
+          {errorMessage}
+        </p>
       {/if}
-    </button>
-    <button
-      class="btn btn-outline"
-      onclick={async () => {
-        try {
-          await invoke("open_client_config_manager");
-        } catch (err) {
-          errorMessage = `Failed to open config manager: ${err}`;
-        }
-      }}
-    >
-      Advanced options
-    </button>
-  </div>
-
+    </div>
+    <div class="flex flex-row gap-2">
+      <button
+        class="btn"
+        class:btn-disabled={isRestarting}
+        disabled={isRestarting}
+        onclick={tryAgain}
+      >
+        {#if isRestarting}
+          Retrying…
+        {:else}
+          Try again
+        {/if}
+      </button>
+      <button
+        class="btn btn-outline"
+        onclick={async () => {
+          try {
+            await invoke("open_client_config_manager");
+          } catch (err) {
+            errorMessage = `Failed to open config manager: ${err}`;
+          }
+        }}
+      >
+        Advanced options
+      </button>
+    </div>
   </div>
 </div>