The portal in English and Turkish: a catalogue per language, a switcher at the foot of every page, landing.language, Turkish numbers and dates

Every template and handler message in internal/web goes through a JSON
catalogue under internal/web/locales/<code>/, with English as the fallback.
The language is the person's choice (a cookie set by /_lang/{code}), else
Accept-Language, else landing.language. Tests refuse a key some language
lacks, a translation with other arguments than English, and template text
left in English.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/web/admin_nodeengine.go

@@ -28,22 +28,31 @@ func (p *AccountPages) RegisterNodeEngines(mux *http.ServeMux, a NodeEngineAdmin
 		q := url.Values{}
 		if err := a.SetNodeEngine(r.Context(), node, engine, build, admin.Email); err != nil {
 			p.log.Warn("an engine build was not chosen", "admin", admin.Email, "node", node, "err", err)
+			// The control plane's reason, as it gave it: in English.
 			q.Set("problem", node+": "+err.Error())
 		} else {
 			p.log.Info("an engine build was chosen", "admin", admin.Email, "node", node, "engine", engine, "build", build)
-			q.Set("notice", node+" installs "+engine+" "+buildWords(build)+
-				"; the node is told now, and installs it in the background")
+			// Said in the language of the person who chose, since the
+			// sentence travels to the page in the address.
+			q.Set("notice", buildNotice(langOf(r), node, engine, build))
 		}
 		http.Redirect(w, r, "/admin?"+q.Encode(), http.StatusSeeOther)
 	}))
 }
 
-func buildWords(b string) string {
-	switch b {
+// buildNotice says what a node was told to install. A whole sentence for
+// each kind of choice, because where the build goes in it is the
+// language's business.
+func buildNotice(l *Lang, node, engine, build string) string {
+	switch build {
 	case "auto":
-		return "in the build its hardware runs"
+		return l.T("nodeengine.notice.auto", node, engine)
 	case "none":
-		return "no longer"
+		return l.T("nodeengine.notice.none", node, engine)
 	}
-	return "built for " + map[string]string{"cu13": "CUDA 13", "cu129": "CUDA 12.9"}[b]
+	name := map[string]string{"cu13": "CUDA 13", "cu129": "CUDA 12.9", "cu12": "CUDA 12"}[build]
+	if name == "" {
+		name = build
+	}
+	return l.T("nodeengine.notice.build", node, engine, name)
 }