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/plugins/+page.svelte

@@ -191,7 +191,7 @@
     {:else}
         <div class="artifacts">
             {#each plugins as a (a.id)}
-                <a class="artifact-row" href="/scripts/{a.id}">
+                <a class="artifact-row" href="/plugins/{a.id}">
                     <div class="row-top">
                         <span class="artifact-name">{a.name}</span>
                         <span class="scope tag scope-{a.scope_type ?? 'none'}">{scopeLabel(a)}</span>