Simplify instance details and clarify diagnostics

src/lib/ui/components/TelemetryDiagnostics.svelte

@@ -79,20 +79,10 @@
         <Button size="sm" onclick={refresh} disabled={refreshing} loading={refreshing}>Refresh</Button>
     </div>
 
-    <p class="intro">
-        Incoming <code>POST /api/telemetry</code> requests with this exact server name.
-        The scoreboard uses telemetry; the fleet player count comes from RCON separately.
-    </p>
-    <p class="retention">
-        Newest first · {retention.maxPerServer ? `up to ${retention.maxPerServer} requests per server` : 'no per-server retention cap'} · {retention.maxAgeDays ? `last ${retention.maxAgeDays} days` : 'no age expiry'}. Fleet-wide limits also apply.
-        Refreshes every 5 seconds while visible.
-        {#if refreshedAt}<span>Last refreshed <time datetime={refreshedAt}>{timestamp(refreshedAt)}</time>.</span>{/if}
-    </p>
-
     {#if error}
         <p class="load-error" role="alert">
-            {error}{#if loaded} Previously loaded requests are shown below.{/if}
-        </p>
+            Couldn’t load telemetry requests. {#if loaded} Previously loaded requests are shown below.{/if}
+        </p><Button size="sm" onclick={refresh} disabled={refreshing}>Retry</Button><details class="payload"><summary>Technical details</summary>{error}</details>
     {/if}
 
     {#if !loaded && !error}
@@ -133,14 +123,24 @@
         <ListFooter total={requests.length} bind:limit label="requests" />
     {/if}
 
+    <details class="request-help"><summary>About request logging</summary>    <p class="intro">
+        Incoming <code>POST /api/telemetry</code> requests with this exact server name.
+        Fresh game telemetry supplies player counts when available; RCON provides a fallback. The scoreboard uses telemetry.
+    </p>
+    <p class="retention">
+        Newest first · {retention.maxPerServer ? `up to ${retention.maxPerServer} requests per server` : 'no per-server retention cap'} · {retention.maxAgeDays ? `last ${retention.maxAgeDays} days` : 'no age expiry'}. Fleet-wide limits also apply.
+        Refreshes every 5 seconds while visible.
+        {#if refreshedAt}<span>Last refreshed <time datetime={refreshedAt}>{timestamp(refreshedAt)}</time>.</span>{/if}
+    </p>
+
     <p class="attribution">
-        Logging starts after this update is installed.
         Requests can be linked here only when readable JSON contains a matching top-level <code>server</code> field.
         Calls that never reach Electric Cherry, malformed JSON, and different server names will not appear here.
-    </p>
+    </p></details>
 </Card>
 
 <style>
+    .request-help { margin-top: 16px; font-size: var(--text-xs); }
     .panel-head, .request-head, .request-result {
         display: flex;
         align-items: center;