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/tool-detail.tsx

@@ -61,6 +61,7 @@ import {
 import { customFetch } from "@workspace/api-client-react";
 import { recordRecentTool } from "@/lib/recent-tools";
 import { FieldHelp } from "@/components/field-help";
+import { GuideHelp } from "@/components/guide-help";
 
 const ratingSchema = z.object({
   usefulness: z.number().min(1).max(5),
@@ -615,7 +616,10 @@ export default function ToolDetail() {
         <Dialog open={costDialogOpen} onOpenChange={(o) => { if (!o) setCostDialogOpen(false); }}>
           <DialogContent>
             <DialogHeader>
-              <DialogTitle>{editCost ? t("detail.edit") + " " + t("detail.costs") : t("detail.addCost")}</DialogTitle>
+              <DialogTitle className="flex items-center gap-2">
+                {editCost ? t("detail.edit") + " " + t("detail.costs") : t("detail.addCost")}
+                <GuideHelp guide="kosten" label={t("detail.costs")} />
+              </DialogTitle>
               <DialogDescription>Manage license cost information for this tool.</DialogDescription>
             </DialogHeader>
             <div className="space-y-4 py-2">
@@ -765,7 +769,10 @@ export default function ToolDetail() {
               {isReviewFormOpen && (
                 <Card className="border-primary shadow-sm">
                   <CardHeader>
-                    <CardTitle>{t("detail.addReview")}</CardTitle>
+                    <CardTitle className="flex items-center gap-2">
+                      {t("detail.addReview")}
+                      <GuideHelp guide="bewerten" label={t("detail.addReview")} />
+                    </CardTitle>
                     <CardDescription>Share your experience with {tool.name}</CardDescription>
                   </CardHeader>
                   <CardContent>