feat: implement photo albums (media groups) and persist account selection

Group photos with shared media_album_id into single album bubbles with
grid layout (up to 3x cols). Album navigation treats grouped photos as
one unit (j/k skip entire album). Persist selected account to
accounts.toml so it survives app restart.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/ui/messages.rs

@@ -251,6 +251,7 @@ fn render_message_list<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &mut Ap
                             message_id: msg.id(),
                             photo_path: path.clone(),
                             line_offset: placeholder_start,
+                            x_offset: 0,
                             width: img_width,
                             height: img_height,
                         });
@@ -259,6 +260,48 @@ fn render_message_list<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &mut Ap
 
                 lines.extend(bubble_lines);
             }
+            MessageGroup::Album(album_messages) => {
+                #[cfg(feature = "images")]
+                {
+                    let is_selected = album_messages
+                        .iter()
+                        .any(|m| selected_msg_id == Some(m.id()));
+                    if is_selected {
+                        selected_msg_line = Some(lines.len());
+                    }
+
+                    let (bubble_lines, album_deferred) = components::render_album_bubble(
+                        &album_messages,
+                        app.config(),
+                        content_width,
+                        selected_msg_id,
+                    );
+
+                    for mut d in album_deferred {
+                        d.line_offset += lines.len();
+                        deferred_images.push(d);
+                    }
+
+                    lines.extend(bubble_lines);
+                }
+                #[cfg(not(feature = "images"))]
+                {
+                    // Fallback: рендерим каждое сообщение отдельно
+                    for msg in &album_messages {
+                        let is_selected = selected_msg_id == Some(msg.id());
+                        if is_selected {
+                            selected_msg_line = Some(lines.len());
+                        }
+                        lines.extend(components::render_message_bubble(
+                            msg,
+                            app.config(),
+                            content_width,
+                            selected_msg_id,
+                            app.playback_state.as_ref(),
+                        ));
+                    }
+                }
+            }
         }
     }
 
@@ -334,7 +377,7 @@ fn render_message_list<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &mut Ap
                 }
 
                 // Рендерим с ПОЛНОЙ высотой (не сжимаем)
-                let img_rect = Rect::new(content_x, img_y, d.width, d.height);
+                let img_rect = Rect::new(content_x + d.x_offset, img_y, d.width, d.height);
 
                 // ОПТИМИЗАЦИЯ: Загружаем только видимые изображения (не все сразу)
                 // Используем inline_renderer с Halfblocks для скорости