feat(i18n): localise the quick-button tooltips

The three quick-button tooltips were hard-coded English while the rest of the
UI goes through HellionStrings. All 25 resource files now carry them, machine
translated on Flo's go-ahead.

Verified: every file still parses as XML, and the base file stays English so a
missing language falls back to what was there before.

HellionChat/Ui/Components/InputBar.cs

@@ -511,9 +511,9 @@ internal sealed class InputBar
 
     private void DrawQuickButtons()
     {
-        // Tooltip text is collected here and drawn after the icon font is popped.
-        // Inside the push it rendered against the FontAwesome atlas, which has no
-        // ASCII glyphs, so every tooltip came out as an empty box.
+        // Collected here and drawn after the icon font is popped. Inside the push
+        // it rendered against the FontAwesome atlas, which has no ASCII glyphs, so
+        // every tooltip came out as an empty box.
         string? tooltip = null;
 
         using (_fonts.FontAwesome.Push())
@@ -521,7 +521,7 @@ internal sealed class InputBar
             if (ImGui.Button(FontAwesomeIcon.SmileBeam.ToIconString()))
                 _symbolPicker.OpenPopup();
             if (ImGui.IsItemHovered())
-                tooltip = "Insert symbol";
+                tooltip = HellionStrings.InputBar_InsertSymbol_Tooltip;
 
             if (_themeQuickPicker is not null)
             {
@@ -538,7 +538,7 @@ internal sealed class InputBar
                 _onOpenSettings();
             }
             if (ImGui.IsItemHovered())
-                tooltip = "Settings";
+                tooltip = HellionStrings.InputBar_Settings_Tooltip;
 
             // Hides the window (1.5.6 UserHide). One-way — Enter brings it back.
             // Main window only (pop-outs have their own close); last in the row.
@@ -548,7 +548,7 @@ internal sealed class InputBar
                 if (ImGui.Button(FontAwesomeIcon.EyeSlash.ToIconString()))
                     _onHideWindow();
                 if (ImGui.IsItemHovered())
-                    tooltip = "Hide chat (Enter to bring back)";
+                    tooltip = HellionStrings.InputBar_HideChat_Tooltip;
             }
         }