diff --git a/static/i18n.js b/static/i18n.js
index 84643cab..c4d03526 100644
--- a/static/i18n.js
+++ b/static/i18n.js
@@ -8947,6 +8947,13 @@ const LOCALES = {
     session_deleted_worktree: 'Conversa excluída. O worktree permanece no disco.',
     session_batch_delete_worktree_confirm: 'Excluir {0} conversas? {1} conversa(s) com worktree manterão seus diretórios de worktree no disco.',
     session_batch_archive_worktree_confirm: 'Arquivar {0} conversas? {1} conversa(s) com worktree manterão seus diretórios de worktree no disco.',
+    session_batch_delete_confirm: 'Excluir {0} conversas?',
+    session_batch_archive_confirm: 'Arquivar {0} conversas?',
+    session_select_mode: 'Selecionar',
+    session_select_mode_desc: 'Selecionar conversas para gerenciamento em lote',
+    session_select_all: 'Selecionar todas',
+    session_selected_count: '{0} selecionadas',
+    session_no_selection: 'Nenhuma conversa selecionada',
     // settings panel
     settings_heading_title: 'Control Center',
     settings_heading_subtitle: 'Preferências, ferramentas de conversa e controles do sistema.',
diff --git a/tests/test_login_locale_parity.py b/tests/test_login_locale_parity.py
index ff4a4b2b..77392f96 100644
--- a/tests/test_login_locale_parity.py
+++ b/tests/test_login_locale_parity.py
@@ -328,3 +328,33 @@ def test_login_flow_keys_are_translated(loc_key: str):
         f"Locale {loc_key!r} leaks English for login-flow keys: {leaks}. "
         f"Translate these in static/i18n.js (issue #1442)."
     )
+
+
+# ── Session-management key parity ─────────────────────────────────────────────
+#
+# Keys added for session batch operations and multi-select (#2112).
+# Every locale block must have these keys; missing them falls back to English
+# which is a regression for non-English users.
+
+SESSION_MANAGEMENT_KEYS = (
+    "session_batch_delete_confirm",
+    "session_batch_archive_confirm",
+    "session_batch_delete_worktree_confirm",
+    "session_batch_archive_worktree_confirm",
+    "session_select_mode",
+    "session_select_mode_desc",
+    "session_select_all",
+    "session_selected_count",
+    "session_no_selection",
+)
+
+
+@pytest.mark.parametrize("loc_key", ["en", "es", "de", "ru", "zh", "zh-Hant", "ja", "pt", "ko"])
+def test_session_management_keys_present(loc_key: str):
+    """Every locale block must define all session-management keys (no fallback to English)."""
+    seg = _i18n_locale_block(loc_key)
+    missing = [k for k in SESSION_MANAGEMENT_KEYS if _value_of(seg, k) is None]
+    assert not missing, (
+        f"Locale {loc_key!r} is missing session-management keys: {missing}. "
+        f"Add translations in static/i18n.js (issue #2112)."
+    )