feat(docs): version-based docs, correct Gitea tag links, form guide help

- each release now carries a full docs snapshot (reference + handbook)
  under docs/releases/<v>/; the docs frontend loads a version's snapshot
  for /docs/vX.Y.Z/* and shows the handbook/reference of that version
- version dropdown navigates to /docs/<version> (docs home) instead of
  the release notes page; old /docs/vX.Y.Z redirect removed
- generator: --snapshot writes handbook + reference; build copies
  versioned snapshots (last 7 versions) into /docs/versions/<v>/
- fix Gitea tag links: /admin/tool-evaluator/tags/<v> was 404, correct
  URL is /releases/tag/<v>
- add GuideHelp button to forms/pages linking to the matching handbook
  guide (rating, tool add/edit, costs, compare, watchlist, analytics)

artifacts/toolrate/src/pages/analytics.tsx

@@ -6,6 +6,7 @@ import {
   GetTopToolsMetric
 } from "@workspace/api-client-react";
 import { Layout } from "@/components/layout";
+import { GuideHelp } from "@/components/guide-help";
 import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/components/ui/card";
 import { Skeleton } from "@/components/ui/skeleton";
 import { 
@@ -48,7 +49,10 @@ export default function Analytics() {
     <Layout>
       <div className="space-y-6 pb-10">
         <div>
-          <h1 className="text-3xl font-bold tracking-tight mb-2">Platform Analytics</h1>
+          <h1 className="text-3xl font-bold tracking-tight mb-2 flex items-center gap-2">
+            Platform Analytics
+            <GuideHelp guide="analytics" label="Platform Analytics" />
+          </h1>
           <p className="text-muted-foreground">Macro-level insights into tool performance and community engagement.</p>
         </div>