Small UI cleanup, auto-refresh, and per-kind artifact routes

- Remove redundant "manage scripts" button and pipeline sidebar from Fleet page
- Bump log tail default 200 -> 1000 lines
- Auto-refresh (5s) on deployments list/detail, betas list, server detail, and artifact detail
- Drift ignores dedicated.cfg (Plutonium MP config; regenerates if deleted)
- Extract ArtifactDetail component; mount under /scripts/[id], /configs/[id], /plugins/[id] so configs and plugins no longer land on /scripts URLs

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/routes/deployments/+page.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-    import { onMount } from 'svelte';
+    import { onMount, onDestroy } from 'svelte';
 
     interface ServerRow {
         server: string;
@@ -113,9 +113,14 @@
         }
     }
 
+    let poll: ReturnType<typeof setInterval> | null = null;
     onMount(async () => {
         await Promise.all([loadDeployments(), scanDrift()]);
         loading = false;
+        poll = setInterval(loadDeployments, 5000);
+    });
+    onDestroy(() => {
+        if (poll) clearInterval(poll);
     });
 
     function isActive(d: Deployment): boolean {