refactor(channels): make built-in channels self-contained (#4908)

* refactor(channels): own setup and instance contracts

* refactor(channels): isolate management contracts

* refactor(channels): normalize activation contracts

* fix(channels): enforce management contracts

* refactor(channels): finish setup ownership migration

* fix(channels): harden management contracts

* fix(channels): enforce lazy loading and runtime ownership

* fix(feishu): make multi-instance startup idempotent

* fix(webui): render channel setup contracts cleanly

* fix(feishu): stop websocket clients cleanly

* fix(channels): enforce persistence and activation gates

* fix(channels): preserve global feature action scope

* fix(channels): apply defaults for single plugins

* fix(channels): enforce management contract boundaries

* refactor(feishu): remove identity helper indirection

* fix(channels): preserve management setup contracts

* refactor(channels): generalize instance settings UI

* refactor(channels): package channel plugins with web UI metadata

* refactor(channels): make built-ins self-contained packages

* test(channels): colocate tests with channel packages

* fix(dingtalk): use official brand icon

* feat(channels): colocate webui translations

* docs(channels): clarify plugin ownership

* test(exec): remove output wait race

* refactor(channels): unify plugin descriptors

* fix(channels): enforce descriptor-owned contracts

* refactor(channels): finish package-owned plugin setup

* refactor(channels): use repository-owned packages only

* fix(channels): self-describe dependencies and runtime state

* fix(channels): warn about legacy entry points

webui/src/i18n/locales/fr/common.json

@@ -513,13 +513,51 @@
       "needsConfig": "Configuration requise",
       "connect": "Connecter",
       "reconnect": "Reconnecter",
-      "feishuQrAlt": "QR code de connexion Feishu",
-      "feishuScanTitle": "Scanner avec Feishu",
-      "feishuScanDescription": "Utilisez Feishu ou Lark sur votre téléphone pour scanner ce code. nanobot terminera la configuration automatiquement après l'autorisation.",
-      "feishuWaiting": "En attente d'autorisation...",
-      "feishuConnected": "Feishu est connecté.",
-      "feishuConnectStopped": "Connexion arrêtée.",
-      "feishuConnecting": "Connexion..."
+      "advanced": "Avancé",
+      "checkAndEnable": "Vérifier et activer",
+      "checkConnection": "Vérifier la connexion",
+      "checkedAndEnabled": "Vérifié et activé.",
+      "checking": "Vérification...",
+      "checkOnly": "Vérifier uniquement",
+      "commandCopied": "Commande copiée.",
+      "commandCopyFailed": "Impossible de copier la commande.",
+      "configuredInstances": "{{count}} instances configurées",
+      "connectPreview": "La connexion dans le navigateur est la prochaine étape. Pour l'instant, exécutez la commande ci-dessous.",
+      "copyCommand": "Copier la commande",
+      "filterAll": "Tous",
+      "filterOff": "Désactivés",
+      "filterOn": "Activés",
+      "helperCopied": "{{name}} copié.",
+      "helperCopyFailed": "Impossible de copier {{name}}.",
+      "hideSecret": "Masquer le secret",
+      "instanceConfigured": "Configurée",
+      "instanceNeedsSetup": "Configuration requise",
+      "runtimeFailed": "Échec du démarrage",
+      "runtimeStarting": "Démarrage",
+      "runtimeStopped": "À l'arrêt",
+      "managedByWebui": "Géré par la WebUI",
+      "officialGuide": "Guide officiel",
+      "optional": "Facultatif",
+      "providerPreset": "Fournisseur",
+      "requiredSetup": "Configuration requise",
+      "savedSecret": "Enregistré",
+      "savedSecretPlaceholder": "Secret enregistré",
+      "savedSettings": "Paramètres enregistrés.",
+      "saveSettings": "Enregistrer les paramètres",
+      "selectChannel": "Afficher les paramètres de {{name}}",
+      "setupSteps": "Étapes suivantes",
+      "showSecret": "Afficher le secret",
+      "toggleChannel": "Canal {{name}}",
+      "toggleInstance": "Instance {{name}}",
+      "tryIt": "Essayer",
+      "validationFailed": "Vérifiez la configuration requise avant l'activation.",
+      "validation": {
+        "connected": "Connecté",
+        "configured": "Configuré manuellement",
+        "needs_setup": "Configuration requise",
+        "invalid": "Non valide",
+        "unsupported": "Configuration manuelle"
+      }
     },
     "nanobotFeatures": {
       "enabled": "Activé",