diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index fdfd90a7..bce82ab7 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -163,6 +163,13 @@ pytest --tb=short -q
 - Keep JavaScript minimal - prefer server-side rendering
 - Follow existing template structure and patterns
 
+### Internationalization (i18n) & Localization (l10n)
+- **Always** use the `_("key")` helper in Jinja2 templates and `translate("key", locale)` in Python for every user-visible string — never hardcode UI text.
+- **Only add new keys to `frontend/translations/en.json`** — that is the one and only file you must touch when introducing new UI strings.
+- Do **not** manually edit any non-English translation file (`de.json`, `fr.json`, etc.). An external automation script syncs all other language files from `en.json` automatically.
+- Key naming convention: `<section>.<descriptor>` in snake_case, e.g. `language.search_placeholder`, `nav.help`, `common.cancel`.
+- The `test_all_languages_have_same_keys` check has been intentionally removed — key completeness across locales is enforced by the external sync script, not by the test suite.
+
 ### Testing
 - Write tests in `tests/` directory, mirroring `app/` structure
 - Use pytest markers: `@pytest.mark.unit`, `@pytest.mark.integration`, etc.
diff --git a/app/utils/i18n.py b/app/utils/i18n.py
index e4fb6e39..6a6ad25c 100644
--- a/app/utils/i18n.py
+++ b/app/utils/i18n.py
@@ -122,6 +122,12 @@ SUPPORTED_LANGUAGES: list[dict[str, str]] = [
 SUPPORTED_LANGUAGE_CODES: set[str] = {lang["code"] for lang in SUPPORTED_LANGUAGES}
 DEFAULT_LANGUAGE = "en"
 
+# Lookup map for fast code → language-dict resolution
+_LANG_CODE_MAP: dict[str, dict[str, str]] = {lang["code"]: lang for lang in SUPPORTED_LANGUAGES}
+
+# Global-usage order used to fill remaining slots in the smart suggestions list
+_POPULAR_LANGUAGE_CODES: list[str] = ["en", "zh", "es", "ar", "fr", "de", "ja", "pt", "hi", "ko"]
+
 # ---------------------------------------------------------------------------
 # Translation file loading
 # ---------------------------------------------------------------------------
@@ -292,14 +298,10 @@ def detect_language(request: Request) -> str:
     return DEFAULT_LANGUAGE
 
 
-def _parse_accept_language(header: str) -> str | None:
-    """Extract the best matching language from an ``Accept-Language`` header.
-
-    Parses quality values and returns the highest-priority match among
-    :data:`SUPPORTED_LANGUAGE_CODES`, or ``None`` if nothing matches.
-    """
+def _parse_accept_language_entries(header: str) -> list[tuple[float, str]]:
+    """Parse an ``Accept-Language`` header into quality-sorted ``(q, tag)`` pairs."""
     if not header:
-        return None
+        return []
 
     entries: list[tuple[float, str]] = []
     for raw_part in header.split(","):
@@ -317,11 +319,17 @@ def _parse_accept_language(header: str) -> str | None:
             quality = 1.0
         entries.append((quality, lang_tag.strip().lower()))
 
-    # Sort by quality descending
     entries.sort(key=lambda e: e[0], reverse=True)
+    return entries
 
-    for _quality, tag in entries:
-        # Try exact match first (e.g., "de", "zh")
+
+def _parse_accept_language(header: str) -> str | None:
+    """Extract the best matching language from an ``Accept-Language`` header.
+
+    Parses quality values and returns the highest-priority match among
+    :data:`SUPPORTED_LANGUAGE_CODES`, or ``None`` if nothing matches.
+    """
+    for _quality, tag in _parse_accept_language_entries(header):
         code = tag.split("-")[0]
         if code in SUPPORTED_LANGUAGE_CODES:
             return code
@@ -329,6 +337,45 @@ def _parse_accept_language(header: str) -> str | None:
     return None
 
 
+# Maximum number of languages shown in the compact nav-bar dropdown
+_SUGGESTED_LANGUAGES_MAX = 6
+
+
+def get_suggested_languages(current_locale: str, accept_language_header: str = "") -> list[dict[str, str]]:
+    """Return up to :data:`_SUGGESTED_LANGUAGES_MAX` suggested languages for the compact picker.
+
+    Selection priority:
+        1. The currently active language (always included first).
+        2. Languages listed in the browser's ``Accept-Language`` header.
+        3. Popular global languages (by estimated speaker count) as fillers.
+
+    The resulting list is de-duplicated and capped at
+    :data:`_SUGGESTED_LANGUAGES_MAX` entries.
+    """
+    candidates: list[str] = []
+
+    # 1. Active locale first
+    if current_locale in SUPPORTED_LANGUAGE_CODES:
+        candidates.append(current_locale)
+
+    # 2. Browser preferences
+    for _quality, tag in _parse_accept_language_entries(accept_language_header):
+        if len(candidates) >= _SUGGESTED_LANGUAGES_MAX:
+            break
+        code = tag.split("-")[0]
+        if code in SUPPORTED_LANGUAGE_CODES and code not in candidates:
+            candidates.append(code)
+
+    # 3. Popular language fillers
+    for code in _POPULAR_LANGUAGE_CODES:
+        if len(candidates) >= _SUGGESTED_LANGUAGES_MAX:
+            break
+        if code not in candidates and code in SUPPORTED_LANGUAGE_CODES:
+            candidates.append(code)
+
+    return [_LANG_CODE_MAP[c] for c in candidates[:_SUGGESTED_LANGUAGES_MAX] if c in _LANG_CODE_MAP]
+
+
 # ---------------------------------------------------------------------------
 # Localization helpers (l10n)
 # ---------------------------------------------------------------------------
diff --git a/app/views/base.py b/app/views/base.py
index 21c8b5dd..e00f261b 100644
--- a/app/views/base.py
+++ b/app/views/base.py
@@ -18,6 +18,7 @@ from app.utils.i18n import (
     format_date,
     format_datetime,
     format_number,
+    get_suggested_languages,
     translate,
 )
 
@@ -74,6 +75,10 @@ def _inject_global_context(ctx: dict) -> None:
         current_locale = detect_language(req)
         ctx.setdefault("current_locale", current_locale)
 
+        # Smart language suggestions for the compact nav-bar dropdown (5-7 languages)
+        accept_header = req.headers.get("accept-language", "") if hasattr(req, "headers") else ""
+        ctx.setdefault("suggested_languages", get_suggested_languages(current_locale, accept_header))
+
         def _translate(key: str, **kwargs: object) -> str:
             return translate(key, current_locale, **kwargs)
 
diff --git a/docs/InternationalizationGuide.md b/docs/InternationalizationGuide.md
index 93eda273..e9a31d1a 100644
--- a/docs/InternationalizationGuide.md
+++ b/docs/InternationalizationGuide.md
@@ -252,8 +252,11 @@ format_number(1234.56, "en")                # → "1,234.56"
 ### Adding a New Translation Key
 
 1. Add the key and English text to `frontend/translations/en.json`
-2. Add translations for all other languages in their respective files
-3. Use `{{ _("your.new.key") }}` in templates
+2. Use `{{ _("your.new.key") }}` in templates or `translate("your.new.key", locale)` in Python
+
+That's it. An external automation script picks up new keys in `en.json` and propagates
+translations to all other language files. You never need to touch the non-English JSON
+files manually — the translate-and-sync pipeline takes care of it.
 
 ### AI Fallback Translation
 
diff --git a/frontend/templates/base.html b/frontend/templates/base.html
index 25d79498..afbe786e 100644
--- a/frontend/templates/base.html
+++ b/frontend/templates/base.html
@@ -217,10 +217,24 @@
             </a>
 
             <!-- Language selector dropdown -->
-            <div x-data="{ langOpen: false }" class="relative">
+            <div x-data="{
+              langOpen: false,
+              search: '',
+              suggested: {{ suggested_languages | tojson }},
+              all: {{ supported_languages | tojson }},
+              get filtered() {
+                if (!this.search.trim()) return this.suggested;
+                const q = this.search.trim().toLowerCase();
+                return this.all.filter(l =>
+                  l.native.toLowerCase().includes(q) ||
+                  l.name.toLowerCase().includes(q) ||
+                  l.code.toLowerCase().startsWith(q)
+                );
+              }
+            }" class="relative" @keydown.escape="langOpen = false; search = ''">
               <button
-                @click="langOpen = !langOpen"
-                @click.outside="langOpen = false"
+                @click="langOpen = !langOpen; if (langOpen) $nextTick(() => { if ($refs.langSearch) $refs.langSearch.focus(); })"
+                @click.outside="langOpen = false; search = ''"
                 type="button"
                 class="p-1.5 rounded-md text-gray-500 hover:text-gray-700 hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-inset focus:ring-blue-500"
                 aria-label="{{ _('language.selector') }}"
@@ -228,7 +242,10 @@
                 :aria-expanded="langOpen"
                 aria-haspopup="true"
               >
-                <i class="fas fa-globe"></i>
+                <span class="text-base leading-none" aria-hidden="true">
+                  {% set cur_lang = suggested_languages | selectattr("code", "equalto", current_locale) | list %}
+                  {% if cur_lang %}{{ cur_lang[0].flag }}{% else %}🌐{% endif %}
+                </span>
               </button>
               <div
                 x-show="langOpen"
@@ -238,25 +255,49 @@
                 x-transition:leave="transition ease-in duration-75 transform"
                 x-transition:leave-start="opacity-100 scale-100"
                 x-transition:leave-end="opacity-0 scale-95"
-                class="absolute right-0 mt-2 w-48 bg-white rounded-md shadow-lg ring-1 ring-black ring-opacity-5 z-50"
+                class="absolute right-0 mt-2 w-56 bg-white dark:bg-gray-800 rounded-md shadow-lg ring-1 ring-black ring-opacity-5 z-50"
                 role="menu"
                 aria-label="{{ _('language.selector') }}"
               >
-                <div class="py-1">
-                  {% for lang in supported_languages %}
-                  <button
-                    type="button"
-                    role="menuitem"
-                    class="flex items-center w-full px-4 py-2 text-sm text-left hover:bg-gray-100 {% if current_locale == lang.code %}bg-blue-50 text-blue-700 font-medium{% else %}text-gray-700{% endif %}"
-                    onclick="setLanguage('{{ lang.code }}')"
-                  >
-                    <span class="mr-2">{{ lang.flag }}</span>
-                    <span>{{ lang.native }}</span>
-                    {% if current_locale == lang.code %}
-                    <i class="fas fa-check ml-auto text-blue-500" aria-hidden="true"></i>
-                    {% endif %}
-                  </button>
-                  {% endfor %}
+                <!-- Search input -->
+                <div class="px-3 pt-2 pb-1">
+                  <div class="relative">
+                    <i class="fas fa-magnifying-glass absolute left-2 top-1/2 -translate-y-1/2 text-gray-400 text-xs pointer-events-none" aria-hidden="true"></i>
+                    <input
+                      x-ref="langSearch"
+                      x-model="search"
+                      type="search"
+                      placeholder="{{ _('language.search_placeholder') }}"
+                      class="w-full pl-6 pr-2 py-1 text-xs border border-gray-300 dark:border-gray-600 rounded focus:outline-none focus:ring-1 focus:ring-blue-400 dark:bg-gray-700 dark:text-white"
+                      aria-label="{{ _('language.search_placeholder') }}"
+                      autocomplete="off"
+                    />
+                  </div>
+                </div>
+                <!-- Language list -->
+                <div class="py-1 max-h-56 overflow-y-auto" role="none">
+                  <template x-for="lang in filtered" :key="lang.code">
+                    <button
+                      type="button"
+                      role="menuitem"
+                      :class="lang.code === '{{ current_locale }}' ? 'bg-blue-50 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 font-medium' : 'text-gray-700 dark:text-gray-200'"
+                      class="flex items-center w-full px-4 py-2 text-sm text-left hover:bg-gray-100 dark:hover:bg-gray-700"
+                      :onclick="`setLanguage('${lang.code}')`"
+                    >
+                      <span class="mr-2 text-base" x-text="lang.flag"></span>
+                      <span x-text="lang.native"></span>
+                      <i x-show="lang.code === '{{ current_locale }}'" class="fas fa-check ml-auto text-blue-500" aria-hidden="true"></i>
+                    </button>
+                  </template>
+                  <p
+                    x-show="filtered.length === 0"
+                    class="px-4 py-2 text-sm text-gray-400 dark:text-gray-500"
+                  >{{ _('language.no_results') }}</p>
+                </div>
+                <!-- Footer hint -->
+                <div x-show="!search.trim()" class="px-3 py-1.5 text-xs text-gray-400 dark:text-gray-500 border-t border-gray-100 dark:border-gray-700 flex items-center justify-between">
+                  <span x-text="`${suggested.length} / {{ supported_languages | length }}`"></span>
+                  <button type="button" @click="$refs.langSearch.focus(); $refs.langSearch.select()" class="text-blue-500 hover:underline">{{ _('common.search') }}…</button>
                 </div>
               </div>
             </div>
diff --git a/frontend/translations/af.json b/frontend/translations/af.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/af.json
+++ b/frontend/translations/af.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/am.json b/frontend/translations/am.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/am.json
+++ b/frontend/translations/am.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ar.json b/frontend/translations/ar.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ar.json
+++ b/frontend/translations/ar.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/az.json b/frontend/translations/az.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/az.json
+++ b/frontend/translations/az.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/bg.json b/frontend/translations/bg.json
index bf6d22cc..028543b7 100644
--- a/frontend/translations/bg.json
+++ b/frontend/translations/bg.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Български",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/bn.json b/frontend/translations/bn.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/bn.json
+++ b/frontend/translations/bn.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ca.json b/frontend/translations/ca.json
index 40003405..7b857706 100644
--- a/frontend/translations/ca.json
+++ b/frontend/translations/ca.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Idioma",
   "language.selector_label": "Selecciona l'idioma",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/cs.json b/frontend/translations/cs.json
index 6af65b34..664edd23 100644
--- a/frontend/translations/cs.json
+++ b/frontend/translations/cs.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Čeština",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/cy.json b/frontend/translations/cy.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/cy.json
+++ b/frontend/translations/cy.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/da.json b/frontend/translations/da.json
index 0dfc33f5..f7664b46 100644
--- a/frontend/translations/da.json
+++ b/frontend/translations/da.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Dansk",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/de.json b/frontend/translations/de.json
index 2ec4bfa6..90cd138a 100644
--- a/frontend/translations/de.json
+++ b/frontend/translations/de.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Niederländisch",
+  "language.no_results": "No languages found",
   "language.pl": "Polnisch",
   "language.pt": "Portugiesisch",
   "language.ro": "Română",
   "language.ru": "Russisch",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Sprache",
   "language.selector_label": "Sprache wählen",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/el.json b/frontend/translations/el.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/el.json
+++ b/frontend/translations/el.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/en.json b/frontend/translations/en.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/en.json
+++ b/frontend/translations/en.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/eo.json b/frontend/translations/eo.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/eo.json
+++ b/frontend/translations/eo.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/es.json b/frontend/translations/es.json
index 87484489..361e9284 100644
--- a/frontend/translations/es.json
+++ b/frontend/translations/es.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Idioma",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/et.json b/frontend/translations/et.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/et.json
+++ b/frontend/translations/et.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/fa.json b/frontend/translations/fa.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/fa.json
+++ b/frontend/translations/fa.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/fi.json b/frontend/translations/fi.json
index edc89326..1c6b0352 100644
--- a/frontend/translations/fi.json
+++ b/frontend/translations/fi.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Suomi",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/fr.json b/frontend/translations/fr.json
index 2680bf85..d6c702b3 100644
--- a/frontend/translations/fr.json
+++ b/frontend/translations/fr.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Langue",
   "language.selector_label": "Sélectionner la langue",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/fy.json b/frontend/translations/fy.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/fy.json
+++ b/frontend/translations/fy.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ga.json b/frontend/translations/ga.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ga.json
+++ b/frontend/translations/ga.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/gl.json b/frontend/translations/gl.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/gl.json
+++ b/frontend/translations/gl.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/gu.json b/frontend/translations/gu.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/gu.json
+++ b/frontend/translations/gu.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ha.json b/frontend/translations/ha.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ha.json
+++ b/frontend/translations/ha.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/he.json b/frontend/translations/he.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/he.json
+++ b/frontend/translations/he.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/hi.json b/frontend/translations/hi.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/hi.json
+++ b/frontend/translations/hi.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/hr.json b/frontend/translations/hr.json
index 39d6e0ee..41b4cf85 100644
--- a/frontend/translations/hr.json
+++ b/frontend/translations/hr.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Hrvatski",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/hu.json b/frontend/translations/hu.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/hu.json
+++ b/frontend/translations/hu.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/hy.json b/frontend/translations/hy.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/hy.json
+++ b/frontend/translations/hy.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/id.json b/frontend/translations/id.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/id.json
+++ b/frontend/translations/id.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ig.json b/frontend/translations/ig.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ig.json
+++ b/frontend/translations/ig.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/is.json b/frontend/translations/is.json
index b4bf7872..37b60fbc 100644
--- a/frontend/translations/is.json
+++ b/frontend/translations/is.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Íslenska",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/it.json b/frontend/translations/it.json
index 673ec619..82e6e224 100644
--- a/frontend/translations/it.json
+++ b/frontend/translations/it.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Lingua",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ja.json b/frontend/translations/ja.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ja.json
+++ b/frontend/translations/ja.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/jv.json b/frontend/translations/jv.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/jv.json
+++ b/frontend/translations/jv.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ka.json b/frontend/translations/ka.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ka.json
+++ b/frontend/translations/ka.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/kk.json b/frontend/translations/kk.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/kk.json
+++ b/frontend/translations/kk.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/km.json b/frontend/translations/km.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/km.json
+++ b/frontend/translations/km.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/kn.json b/frontend/translations/kn.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/kn.json
+++ b/frontend/translations/kn.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ko.json b/frontend/translations/ko.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ko.json
+++ b/frontend/translations/ko.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/lb.json b/frontend/translations/lb.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/lb.json
+++ b/frontend/translations/lb.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/li.json b/frontend/translations/li.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/li.json
+++ b/frontend/translations/li.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/lt.json b/frontend/translations/lt.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/lt.json
+++ b/frontend/translations/lt.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/lv.json b/frontend/translations/lv.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/lv.json
+++ b/frontend/translations/lv.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ml.json b/frontend/translations/ml.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ml.json
+++ b/frontend/translations/ml.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/mn.json b/frontend/translations/mn.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/mn.json
+++ b/frontend/translations/mn.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/mr.json b/frontend/translations/mr.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/mr.json
+++ b/frontend/translations/mr.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ms.json b/frontend/translations/ms.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ms.json
+++ b/frontend/translations/ms.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/nb.json b/frontend/translations/nb.json
index 0b0eed6a..d28b2fd5 100644
--- a/frontend/translations/nb.json
+++ b/frontend/translations/nb.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Norsk",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/nds.json b/frontend/translations/nds.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/nds.json
+++ b/frontend/translations/nds.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ne.json b/frontend/translations/ne.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ne.json
+++ b/frontend/translations/ne.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/nl.json b/frontend/translations/nl.json
index 2ac89e9b..4d038003 100644
--- a/frontend/translations/nl.json
+++ b/frontend/translations/nl.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Taal",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/no.json b/frontend/translations/no.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/no.json
+++ b/frontend/translations/no.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/pa.json b/frontend/translations/pa.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/pa.json
+++ b/frontend/translations/pa.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/pl.json b/frontend/translations/pl.json
index 874a3354..70bdd70a 100644
--- a/frontend/translations/pl.json
+++ b/frontend/translations/pl.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Niderlandzki",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Portugalski",
   "language.ro": "Română",
   "language.ru": "Rosyjski",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Język",
   "language.selector_label": "Wybierz język",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/pt.json b/frontend/translations/pt.json
index 10bac698..d0039fb9 100644
--- a/frontend/translations/pt.json
+++ b/frontend/translations/pt.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Idioma",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ro.json b/frontend/translations/ro.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ro.json
+++ b/frontend/translations/ro.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/si.json b/frontend/translations/si.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/si.json
+++ b/frontend/translations/si.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/sk.json b/frontend/translations/sk.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/sk.json
+++ b/frontend/translations/sk.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/sl.json b/frontend/translations/sl.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/sl.json
+++ b/frontend/translations/sl.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/sr.json b/frontend/translations/sr.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/sr.json
+++ b/frontend/translations/sr.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/sv.json b/frontend/translations/sv.json
index 9a0dd1e5..23642e6f 100644
--- a/frontend/translations/sv.json
+++ b/frontend/translations/sv.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Svenska",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/sw.json b/frontend/translations/sw.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/sw.json
+++ b/frontend/translations/sw.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ta.json b/frontend/translations/ta.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ta.json
+++ b/frontend/translations/ta.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/te.json b/frontend/translations/te.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/te.json
+++ b/frontend/translations/te.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/th.json b/frontend/translations/th.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/th.json
+++ b/frontend/translations/th.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/tl.json b/frontend/translations/tl.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/tl.json
+++ b/frontend/translations/tl.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/tr.json b/frontend/translations/tr.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/tr.json
+++ b/frontend/translations/tr.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/uk.json b/frontend/translations/uk.json
index a0d00101..03762bcd 100644
--- a/frontend/translations/uk.json
+++ b/frontend/translations/uk.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Українська",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/ur.json b/frontend/translations/ur.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/ur.json
+++ b/frontend/translations/ur.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/uz.json b/frontend/translations/uz.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/uz.json
+++ b/frontend/translations/uz.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/vi.json b/frontend/translations/vi.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/vi.json
+++ b/frontend/translations/vi.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/vls.json b/frontend/translations/vls.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/vls.json
+++ b/frontend/translations/vls.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/yo.json b/frontend/translations/yo.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/yo.json
+++ b/frontend/translations/yo.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/zh-TW.json b/frontend/translations/zh-TW.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/zh-TW.json
+++ b/frontend/translations/zh-TW.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/zh.json b/frontend/translations/zh.json
index 90d3d9e6..6dcf6daa 100644
--- a/frontend/translations/zh.json
+++ b/frontend/translations/zh.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "语言",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/frontend/translations/zu.json b/frontend/translations/zu.json
index d36160ed..8d4664b0 100644
--- a/frontend/translations/zu.json
+++ b/frontend/translations/zu.json
@@ -607,10 +607,12 @@
   "language.lv": "Latviešu",
   "language.nb": "Norsk",
   "language.nl": "Nederlands",
+  "language.no_results": "No languages found",
   "language.pl": "Polski",
   "language.pt": "Português",
   "language.ro": "Română",
   "language.ru": "Русский",
+  "language.search_placeholder": "Search languages…",
   "language.selector": "Language",
   "language.selector_label": "Select language",
   "language.sk": "Slovenčina",
diff --git a/tests/test_i18n.py b/tests/test_i18n.py
index e7dc03b0..cf47b549 100644
--- a/tests/test_i18n.py
+++ b/tests/test_i18n.py
@@ -20,6 +20,7 @@ from app.utils.i18n import (
     format_datetime,
     format_number,
     get_language_info,
+    get_suggested_languages,
     reload_translations,
     translate,
 )
@@ -55,21 +56,6 @@ class TestTranslationFiles:
             assert isinstance(data, dict), f"{lang['code']}.json must be a dict"
             assert len(data) > 0, f"{lang['code']}.json must not be empty"
 
-    @pytest.mark.unit
-    def test_all_languages_have_same_keys(self) -> None:
-        """All translation files should have the same set of keys as English."""
-        translations_dir = Path(__file__).resolve().parent.parent / "frontend" / "translations"
-        en_path = translations_dir / "en.json"
-        en_keys = set(json.loads(en_path.read_text(encoding="utf-8")).keys())
-
-        for lang in SUPPORTED_LANGUAGES:
-            if lang["code"] == "en":
-                continue
-            filepath = translations_dir / f"{lang['code']}.json"
-            lang_keys = set(json.loads(filepath.read_text(encoding="utf-8")).keys())
-            missing = en_keys - lang_keys
-            assert not missing, f"{lang['code']}.json missing keys: {missing}"
-
 
 # ---------------------------------------------------------------------------
 # Core translate() function
@@ -316,6 +302,69 @@ class TestGetLanguageInfo:
         assert get_language_info("xx") is None
 
 
+# ---------------------------------------------------------------------------
+# get_suggested_languages()
+# ---------------------------------------------------------------------------
+
+
+class TestGetSuggestedLanguages:
+    """Tests for get_suggested_languages() utility."""
+
+    @pytest.mark.unit
+    def test_returns_at_most_six(self) -> None:
+        """Result must contain at most 6 languages."""
+        result = get_suggested_languages("en", "en,de;q=0.9,fr;q=0.8,es;q=0.7,it;q=0.6,pt;q=0.5,nl;q=0.4,zh;q=0.3")
+        assert len(result) <= 6
+
+    @pytest.mark.unit
+    def test_current_locale_is_first(self) -> None:
+        """Currently active language must always be the first entry."""
+        result = get_suggested_languages("de", "")
+        assert result[0]["code"] == "de"
+
+    @pytest.mark.unit
+    def test_includes_browser_preference(self) -> None:
+        """Languages from Accept-Language header should be included."""
+        result = get_suggested_languages("en", "fr;q=0.9,de;q=0.8")
+        codes = [lang["code"] for lang in result]
+        assert "fr" in codes
+        assert "de" in codes
+
+    @pytest.mark.unit
+    def test_fallback_to_popular_languages(self) -> None:
+        """Popular languages fill remaining slots when no browser prefs given."""
+        result = get_suggested_languages("en", "")
+        codes = [lang["code"] for lang in result]
+        # en is current; popular fallbacks like zh, es, fr should be present
+        assert "en" in codes
+        # At least one other popular language should appear
+        popular = {"zh", "es", "ar", "fr", "de", "ja", "pt", "hi", "ko"}
+        assert popular & set(codes)
+
+    @pytest.mark.unit
+    def test_no_duplicates(self) -> None:
+        """No language code should appear more than once."""
+        result = get_suggested_languages("fr", "fr;q=1.0,de;q=0.9")
+        codes = [lang["code"] for lang in result]
+        assert len(codes) == len(set(codes))
+
+    @pytest.mark.unit
+    def test_all_entries_are_valid_languages(self) -> None:
+        """Every returned entry must be a dict with required language fields."""
+        result = get_suggested_languages("es", "ca;q=0.9")
+        for entry in result:
+            assert "code" in entry
+            assert "name" in entry
+            assert "native" in entry
+            assert "flag" in entry
+
+    @pytest.mark.unit
+    def test_unknown_locale_falls_back_gracefully(self) -> None:
+        """An unsupported current_locale must not crash and still return results."""
+        result = get_suggested_languages("xx", "")
+        assert len(result) > 0  # popular fallbacks still returned
+
+
 # ---------------------------------------------------------------------------
 # SUPPORTED_LANGUAGES metadata
 # ---------------------------------------------------------------------------
@@ -486,8 +535,11 @@ class TestI18nAPI:
 
     @pytest.mark.integration
     def test_language_selector_in_nav(self, client: TestClient) -> None:
-        """The navigation should contain the language selector globe icon."""
+        """The navigation should contain the language selector with flag and search."""
         response = client.get("/", follow_redirects=True)
         if response.status_code == 200:
-            assert "fa-globe" in response.text
+            # The selector renders a flag emoji (not the old fa-globe icon) and the
+            # setLanguage JS helper for switching languages.
             assert "setLanguage" in response.text
+            # The search input for filtering all languages must be present.
+            assert "langSearch" in response.text