fix(benchmark): fair to reasoning models, fair to router degradation, real sub-cent costs

Three false signals in benchmark results, all seen on a live run:

- Reasoning models were scored ❌ because the per-test max_tokens cap cut
  them mid-<think> before the actual answer. Every run now gets +256 tokens
  of headroom; non-thinking models stop at EOS as before, thinking ones get
  to finish (math-mult on nanbeige: false 0/1 → honest 1/1).
- When the router degraded (timeout → fallback chain) the table showed
  "✗ degraded" and counted it against classification accuracy. There was no
  classification to judge — such rows now show a muted "⚠ router degraded"
  with an explanatory tooltip and are excluded from the accuracy KPI.
- Costs below $0.0001 (cheap flash models) collapsed to "$0.0000". money
  formatting now grows precision until two significant digits survive
  ($0.000035 instead of $0.0000).

2 new strings in all 7 languages.

web/js/i18n/de.js

@@ -616,4 +616,6 @@ export default {
   "keys.h.st.installed": "Auf der Gateway-Maschine installiert",
   "keys.h.st.configured": "Bereits für dieses Gateway konfiguriert",
   "keys.h.st.notFound": "Auf der Gateway-Maschine nicht gefunden",
+  "bm.degraded": "Router degradiert",
+  "bm.routerDegraded": "Der Router hat nicht rechtzeitig geantwortet — die Anfrage nutzte die Fallback-Kette; die Klassifikation wird nicht gewertet.",
 };

web/js/i18n/en.js

@@ -609,4 +609,6 @@ export default {
   "keys.h.st.installed": "Installed on the gateway machine",
   "keys.h.st.configured": "Already configured for this gateway",
   "keys.h.st.notFound": "Not found on the gateway machine",
+  "bm.degraded": "router degraded",
+  "bm.routerDegraded": "The router did not answer in time — the request used the fallback chain; classification is not judged.",
 };

web/js/i18n/es.js

@@ -616,4 +616,6 @@ export default {
   "keys.h.st.installed": "Instalado en la máquina de la pasarela",
   "keys.h.st.configured": "Ya configurado para esta pasarela",
   "keys.h.st.notFound": "No encontrado en la máquina de la pasarela",
+  "bm.degraded": "router degradado",
+  "bm.routerDegraded": "El router no respondió a tiempo — la petición usó la cadena de reserva; la clasificación no se cuenta.",
 };

web/js/i18n/fr.js

@@ -616,4 +616,6 @@ export default {
   "keys.h.st.installed": "Installé sur la machine de la passerelle",
   "keys.h.st.configured": "Déjà configuré pour cette passerelle",
   "keys.h.st.notFound": "Introuvable sur la machine de la passerelle",
+  "bm.degraded": "routeur dégradé",
+  "bm.routerDegraded": "Le routeur n'a pas répondu à temps — la requête a suivi la chaîne de secours ; la classification n'est pas comptée.",
 };

web/js/i18n/ru.js

@@ -608,4 +608,6 @@ export default {
   "keys.h.st.installed": "Установлен на машине шлюза",
   "keys.h.st.configured": "Уже настроен на этот шлюз",
   "keys.h.st.notFound": "Не найден на машине шлюза",
+  "bm.degraded": "роутер деградировал",
+  "bm.routerDegraded": "Роутер не успел ответить — запрос ушёл по резервной цепочке; классификация не засчитывается.",
 };

web/js/i18n/tr.js

@@ -616,4 +616,6 @@ export default {
   "keys.h.st.installed": "Ağ geçidi makinesinde kurulu",
   "keys.h.st.configured": "Bu ağ geçidi için zaten yapılandırılmış",
   "keys.h.st.notFound": "Ağ geçidi makinesinde bulunamadı",
+  "bm.degraded": "yönlendirici yedeğe düştü",
+  "bm.routerDegraded": "Yönlendirici zamanında yanıt vermedi — istek yedek zincire gitti; sınıflandırma sayılmaz.",
 };

web/js/i18n/zh.js

@@ -616,4 +616,6 @@ export default {
   "keys.h.st.installed": "已安装在网关所在机器上",
   "keys.h.st.configured": "已配置为使用此网关",
   "keys.h.st.notFound": "网关所在机器上未找到",
+  "bm.degraded": "路由器降级",
+  "bm.routerDegraded": "路由器未及时响应 — 请求走了备用链路；分类不计入统计。",
 };