fix(frontend): align Settings desktop labels on French (#78)

UX decision (carnet #78): the human UI of IdeA is French by default,
uniform per surface — proper nouns and technical acronyms (URL, LAN,
IP/CIDR, HTTPS, API, CLI…) stay as-is. Settings mixed English (AI
Profiles, Deployment) with French (Appareils, frozen by UX for #77).

Renames the Settings menu/nav, the Profils IA and Déploiement panels
(titles, actions, states, help text) to French, per the carnet's
exhaustive list. Updates the affected tests accordingly.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

frontend/src/features/settings/SettingsView.tsx

@@ -13,6 +13,12 @@
  *
  * `EmbedderSettings` / `ModelServersPanel` are **not** pulled in here — that is
  * a separate lateral rework. The section list is the seam they would slot into.
+ *
+ * Ticket #78 — UX decision: the human UI of IdeA is French by default, uniform
+ * per surface (proper nouns/technical acronyms like `URL`, `LAN`, `IP/CIDR`,
+ * `HTTPS`, `API`, `CLI` stay as-is). Settings previously mixed `AI Profiles` /
+ * `Deployment` (English) with `Appareils` (French, frozen by UX for #77); this
+ * aligns the whole surface on French.
  */
 
 import { Button, cn } from "@/shared";
@@ -23,17 +29,10 @@ import { DeploymentSettings } from "./DeploymentSettings";
 /** The Settings sections, in menu/nav order. */
 export type SettingsSection = "aiProfiles" | "deployment" | "devices";
 
-/**
- * Human labels, shared by the nav column and the `Settings` menu.
- *
- * `Appareils` is French where its neighbours are English: the device vocabulary
- * is frozen by UX across web and desktop (carnet #77), and the web surface it
- * mirrors is French throughout. Aligning the whole Settings surface on one
- * language is a UX call beyond this ticket.
- */
+/** Human labels, shared by the nav column and the `Settings` menu (ticket #78 — French). */
 export const SETTINGS_SECTION_LABEL: Record<SettingsSection, string> = {
-  aiProfiles: "AI Profiles",
-  deployment: "Deployment",
+  aiProfiles: "Profils IA",
+  deployment: "Déploiement",
   devices: "Appareils",
 };
 
@@ -83,7 +82,7 @@ export function SettingsView({
 
         <div className="mt-auto pt-2">
           <Button size="sm" variant="ghost" className="w-full" onClick={onClose}>
-            Close Settings
+            Fermer les paramètres
           </Button>
         </div>
       </nav>