fix: QR wallet pairing broken by multi-clinic routing (v0.8.1)

QR "scan to connect" pairing has no wallet number, so nothing registered
the request with the relay and the scanning device's response was rejected
("unknown or expired request"). The backend now pre-registers the pairing
request over the relay's new hub:expect event on POST /pair, and
re-registers still-pending requests on hub (re)connect so routing survives
a relay restart. /pair now requires the clinic to have joined the network
(clear 409, surfaced in the import dialog, localized in all five langs).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/components/patients/import-from-wallet-dialog.tsx

@@ -141,6 +141,8 @@ export function ImportFromWalletDialog({
     } catch (err) {
       if (err instanceof ApiError && err.status === 400) {
         setError(t("patients.importApp.invalidWallet"));
+      } else if (err instanceof ApiError && err.status === 409) {
+        setError(t("patients.importApp.networkOff"));
       } else {
         setError(t("patients.importApp.error"));
       }
@@ -171,8 +173,12 @@ export function ImportFromWalletDialog({
       setPairUri(`temetro-pair:?${params.toString()}`);
       setRequest(pairing);
       setPhase("waiting");
-    } catch {
-      setError(t("patients.importApp.error"));
+    } catch (err) {
+      if (err instanceof ApiError && err.status === 409) {
+        setError(t("patients.importApp.networkOff"));
+      } else {
+        setError(t("patients.importApp.error"));
+      }
       setPhase("error");
     }
   };

frontend/lib/i18n/locales/ar/translation.json

@@ -322,6 +322,7 @@
       "expiredTitle": "انتهت صلاحية الطلب",
       "expiredBody": "انتهت مهلة الطلب قبل أن يستجيب المريض.",
       "invalidWallet": "لا يبدو هذا رقم محفظة صالحًا.",
+      "networkOff": "انضم أولاً إلى شبكة Temetro (الإعدادات ← التوقيع) للمشاركة مع تطبيقات المرضى.",
       "errorTitle": "تعذّر الوصول إلى المحفظة",
       "error": "يرجى التحقّق من رقم المحفظة والمحاولة مرة أخرى.",
       "savedTitle": "تم استيراد المريض",

frontend/lib/i18n/locales/de/translation.json

@@ -310,6 +310,7 @@
       "expiredTitle": "Anfrage abgelaufen",
       "expiredBody": "Die Anfrage ist abgelaufen, bevor der Patient geantwortet hat.",
       "invalidWallet": "Das sieht nicht nach einer gültigen Wallet-Nummer aus.",
+      "networkOff": "Treten Sie zuerst dem Temetro-Netzwerk bei (Einstellungen → Signierung), um mit Patienten-Apps zu teilen.",
       "errorTitle": "Wallet nicht erreichbar",
       "error": "Bitte prüfen Sie die Wallet-Nummer und versuchen Sie es erneut.",
       "savedTitle": "Patient importiert",

frontend/lib/i18n/locales/en/translation.json

@@ -310,6 +310,7 @@
       "expiredTitle": "Request expired",
       "expiredBody": "The request timed out before the patient responded.",
       "invalidWallet": "That doesn't look like a valid wallet number.",
+      "networkOff": "Join the Temetro Network first (Settings → Signing) to share with patient apps.",
       "errorTitle": "Couldn't reach the wallet",
       "error": "Please check the wallet number and try again.",
       "savedTitle": "Patient imported",

frontend/lib/i18n/locales/fr/translation.json

@@ -310,6 +310,7 @@
       "expiredTitle": "Demande expirée",
       "expiredBody": "La demande a expiré avant que le patient ne réponde.",
       "invalidWallet": "Cela ne ressemble pas à un numéro de portefeuille valide.",
+      "networkOff": "Rejoignez d'abord le Réseau Temetro (Paramètres → Signature) pour partager avec les applications des patients.",
       "errorTitle": "Impossible de joindre le portefeuille",
       "error": "Veuillez vérifier le numéro de portefeuille et réessayer.",
       "savedTitle": "Patient importé",

frontend/lib/i18n/locales/so/translation.json

@@ -310,6 +310,7 @@
       "expiredTitle": "Codsiga waa dhacay",
       "expiredBody": "Codsiga wuu dhacay ka hor inta uusan bukaanku ka jawaabin.",
       "invalidWallet": "Taasi uma muuqato lambar wallet oo sax ah.",
+      "networkOff": "Marka hore ku biir Shabakadda Temetro (Dejinta → Saxiixa) si aad ula wadaagto abaabulka bukaannada.",
       "errorTitle": "Wallet-ka lama gaari karin",
       "error": "Fadlan hubi lambarka wallet-ka oo isku day mar kale.",
       "savedTitle": "Bukaanka waa la soo dejiyay",

frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "frontend",
-  "version": "0.8.0",
+  "version": "0.8.1",
   "private": true,
   "scripts": {
     "dev": "next dev",