fix: edit dialog remaps terms when target language changes

When the user changes the target language dropdown in the edit dialog,
terms now remap to show the language-specific translation from the
translations dict. E.g. changing to Spanish shows 'servidor' instead
of 'server'. Falls back to default English if no translation exists.

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

frontend/src/app/dashboard/glossaries/EditGlossaryDialog.tsx

@@ -1,6 +1,6 @@
 'use client';
 
-import { useState, useCallback, useRef } from 'react';
+import { useState, useCallback, useRef, useEffect } from 'react';
 import {
   Dialog,
   DialogContent,
@@ -27,6 +27,13 @@ interface EditGlossaryDialogProps {
   isSaving: boolean;
 }
 
+/** Get the display target for a term based on the selected target language */
+function getDisplayTarget(term: { target: string; translations?: Record<string, string> }, lang: string): string {
+  if (lang === 'multi' || lang === 'en') return term.target;
+  const translations = term.translations || {};
+  return translations[lang] || term.target;
+}
+
 export function EditGlossaryDialog({
   open,
   onOpenChange,
@@ -39,14 +46,19 @@ export function EditGlossaryDialog({
   const [targetLanguage, setTargetLanguage] = useState('multi');
   const [terms, setTerms] = useState<GlossaryTermInput[]>([]);
   const fileInputRef = useRef<HTMLInputElement>(null);
-
   const isInitialized = useRef(false);
 
+  // Initialize when glossary changes
   if (glossary && !isInitialized.current) {
     setName(glossary.name);
     setSourceLanguage(glossary.source_language || 'fr');
     setTargetLanguage(glossary.target_language || 'multi');
-    setTerms(glossary.terms.map(t => ({ source: t.source, target: t.target })));
+    // Store terms with full translations data
+    setTerms(glossary.terms.map(t => ({
+      source: t.source,
+      target: t.target,
+      translations: t.translations || {},
+    })));
     isInitialized.current = true;
   }
 
@@ -54,6 +66,23 @@ export function EditGlossaryDialog({
     isInitialized.current = false;
   }
 
+  // When target language changes, remap displayed targets from translations dict
+  const handleTargetLanguageChange = useCallback((newLang: string) => {
+    setTargetLanguage(newLang);
+    // Don't remap if multi or en — those use the default target field
+    if (newLang === 'multi' || newLang === 'en') return;
+    setTerms(prev => prev.map(t => {
+      const translations = (t as any).translations || {};
+      const langTarget = translations[newLang];
+      if (langTarget) {
+        // Show the language-specific translation as the target
+        return { source: t.source, target: langTarget, translations };
+      }
+      // No translation for this language — keep the default English target
+      return t;
+    }));
+  }, []);
+
   const handleSave = useCallback(async () => {
     if (!glossary || !name.trim()) return;
 
@@ -77,7 +106,7 @@ export function EditGlossaryDialog({
         id: `temp-${i}`,
         source: t.source,
         target: t.target,
-        translations: t.translations || {},
+        translations: (t as any).translations || {},
         created_at: null,
       })),
     };
@@ -144,7 +173,7 @@ export function EditGlossaryDialog({
         <DialogHeader>
           <DialogTitle>Edit Glossary</DialogTitle>
           <DialogDescription>
-            Update the glossary name and term pairs.
+            Update the glossary name, language pair, and terms.
           </DialogDescription>
         </DialogHeader>
 
@@ -179,7 +208,7 @@ export function EditGlossaryDialog({
               <Label className="text-xs text-muted-foreground mb-1 block">Langue cible</Label>
               <select
                 value={targetLanguage}
-                onChange={e => setTargetLanguage(e.target.value)}
+                onChange={e => handleTargetLanguageChange(e.target.value)}
                 disabled={isSaving}
                 className="w-full h-9 rounded-md border border-input bg-background px-3 text-sm focus:outline-none focus:ring-2 focus:ring-ring"
               >