refactor: implement trait-based DI for TdClient and fix stack overflow

Implement complete trait-based dependency injection pattern for TdClient
to enable testing with FakeTdClient mock. Fix critical stack overflow bugs
caused by infinite recursion in trait implementations.

Breaking Changes:
- App is now generic: App<T: TdClientTrait = TdClient>
- All UI and input handlers are generic over TdClientTrait
- TdClient methods now accessed through trait interface

New Files:
- src/tdlib/trait.rs: TdClientTrait definition with 40+ methods
- src/tdlib/client_impl.rs: TdClientTrait impl for TdClient
- tests/helpers/fake_tdclient_impl.rs: TdClientTrait impl for FakeTdClient

Critical Fixes:
- Fix stack overflow in send_message, edit_message, delete_messages
- Fix stack overflow in forward_messages, current_chat_messages
- Fix stack overflow in current_pinned_message
- All methods now call message_manager directly to avoid recursion

Testing:
- FakeTdClient supports configurable auth_state for auth screen tests
- Added pinned message support in FakeTdClient
- All 196+ tests passing (188 tests + 8 benchmarks)

Dependencies:
- Added async-trait = "0.1"

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/ui/auth.rs

@@ -1,4 +1,5 @@
 use crate::app::App;
+use crate::tdlib::TdClientTrait;
 use crate::tdlib::AuthState;
 use ratatui::{
     layout::{Alignment, Constraint, Direction, Layout},
@@ -8,7 +9,7 @@ use ratatui::{
     Frame,
 };
 
-pub fn render(f: &mut Frame, app: &App) {
+pub fn render<T: TdClientTrait>(f: &mut Frame, app: &App<T>) {
     let area = f.area();
 
     let vertical_chunks = Layout::default()

src/ui/chat_list.rs

@@ -1,4 +1,5 @@
 use crate::app::App;
+use crate::tdlib::TdClientTrait;
 use crate::tdlib::UserOnlineStatus;
 use crate::ui::components;
 use ratatui::{
@@ -8,7 +9,7 @@ use ratatui::{
     Frame,
 };
 
-pub fn render(f: &mut Frame, area: Rect, app: &mut App) {
+pub fn render<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &mut App<T>) {
     let chat_chunks = Layout::default()
         .direction(Direction::Vertical)
         .constraints([

src/ui/footer.rs

@@ -1,4 +1,5 @@
 use crate::app::App;
+use crate::tdlib::TdClientTrait;
 use crate::tdlib::NetworkState;
 use ratatui::{
     layout::Rect,
@@ -7,9 +8,9 @@ use ratatui::{
     Frame,
 };
 
-pub fn render(f: &mut Frame, area: Rect, app: &App) {
+pub fn render<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &App<T>) {
     // Индикатор состояния сети
-    let network_indicator = match app.td_client.network_state {
+    let network_indicator = match app.td_client.network_state() {
         NetworkState::Ready => "",
         NetworkState::WaitingForNetwork => "⚠ Нет сети | ",
         NetworkState::ConnectingToProxy => "⏳ Прокси... | ",
@@ -32,9 +33,9 @@ pub fn render(f: &mut Frame, area: Rect, app: &App) {
         )
     };
 
-    let style = if matches!(app.td_client.network_state, NetworkState::WaitingForNetwork) {
+    let style = if matches!(app.td_client.network_state(), NetworkState::WaitingForNetwork) {
         Style::default().fg(Color::Red)
-    } else if !matches!(app.td_client.network_state, NetworkState::Ready) {
+    } else if !matches!(app.td_client.network_state(), NetworkState::Ready) {
         Style::default().fg(Color::Cyan)
     } else if app.error_message.is_some() {
         Style::default().fg(Color::Red)

src/ui/loading.rs

@@ -1,4 +1,5 @@
 use crate::app::App;
+use crate::tdlib::TdClientTrait;
 use ratatui::{
     layout::{Alignment, Constraint, Direction, Layout},
     style::{Color, Modifier, Style},
@@ -6,7 +7,7 @@ use ratatui::{
     Frame,
 };
 
-pub fn render(f: &mut Frame, app: &App) {
+pub fn render<T: TdClientTrait>(f: &mut Frame, app: &App<T>) {
     let area = f.area();
 
     let chunks = Layout::default()

src/ui/main_screen.rs

@@ -1,5 +1,6 @@
 use super::{chat_list, footer, messages};
 use crate::app::App;
+use crate::tdlib::TdClientTrait;
 use ratatui::{
     layout::{Constraint, Direction, Layout, Rect},
     style::{Color, Modifier, Style},
@@ -11,7 +12,7 @@ use ratatui::{
 /// Порог ширины для компактного режима (одна панель)
 const COMPACT_WIDTH: u16 = 80;
 
-pub fn render(f: &mut Frame, app: &mut App) {
+pub fn render<T: TdClientTrait>(f: &mut Frame, app: &mut App<T>) {
     let area = f.area();
     let is_compact = area.width < COMPACT_WIDTH;
 
@@ -52,7 +53,7 @@ pub fn render(f: &mut Frame, app: &mut App) {
     footer::render(f, chunks[2], app);
 }
 
-fn render_folders(f: &mut Frame, area: Rect, app: &App) {
+fn render_folders<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &App<T>) {
     let mut spans = vec![];
 
     // "All" всегда первая (клавиша 1)

src/ui/messages.rs

@@ -1,4 +1,5 @@
 use crate::app::App;
+use crate::tdlib::TdClientTrait;
 use crate::message_grouping::{group_messages, MessageGroup};
 use crate::ui::components;
 use ratatui::{
@@ -113,7 +114,7 @@ fn wrap_text_with_offsets(text: &str, max_width: usize) -> Vec<WrappedLine> {
     result
 }
 
-pub fn render(f: &mut Frame, area: Rect, app: &App) {
+pub fn render<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &App<T>) {
     // Режим профиля
     if app.is_profile_mode() {
         if let Some(profile) = app.get_profile_info() {
@@ -213,7 +214,7 @@ pub fn render(f: &mut Frame, area: Rect, app: &App) {
         f.render_widget(header, message_chunks[0]);
 
         // Pinned bar (если есть закреплённое сообщение)
-        if let Some(pinned_msg) = &app.td_client.current_pinned_message() {
+        if let Some(pinned_msg) = app.td_client.current_pinned_message() {
             let pinned_preview: String = pinned_msg.text().chars().take(40).collect();
             let ellipsis = if pinned_msg.text().chars().count() > 40 {
                 "..."
@@ -251,7 +252,7 @@ pub fn render(f: &mut Frame, area: Rect, app: &App) {
         let mut selected_msg_line: Option<usize> = None;
 
         // Используем message_grouping для группировки сообщений
-        let grouped = group_messages(app.td_client.current_chat_messages());
+        let grouped = group_messages(&app.td_client.current_chat_messages());
         let mut is_first_date = true;
         let mut is_first_sender = true;
 
@@ -357,9 +358,11 @@ pub fn render(f: &mut Frame, area: Rect, app: &App) {
             // Режим выбора сообщения - подсказка зависит от возможностей
             let selected_msg = app.get_selected_message();
             let can_edit = selected_msg
+                .as_ref()
                 .map(|m| m.can_be_edited() && m.is_outgoing())
                 .unwrap_or(false);
             let can_delete = selected_msg
+                .as_ref()
                 .map(|m| m.can_be_deleted_only_for_self() || m.can_be_deleted_for_all_users())
                 .unwrap_or(false);
 
@@ -501,7 +504,7 @@ pub fn render(f: &mut Frame, area: Rect, app: &App) {
 }
 
 /// Рендерит режим поиска по сообщениям
-fn render_search_mode(f: &mut Frame, area: Rect, app: &App) {
+fn render_search_mode<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &App<T>) {
     // Извлекаем данные из ChatState
     let (query, results, selected_index) =
         if let crate::app::ChatState::SearchInChat {
@@ -696,7 +699,7 @@ fn render_search_mode(f: &mut Frame, area: Rect, app: &App) {
 }
 
 /// Рендерит режим просмотра закреплённых сообщений
-fn render_pinned_mode(f: &mut Frame, area: Rect, app: &App) {
+fn render_pinned_mode<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &App<T>) {
     // Извлекаем данные из ChatState
     let (messages, selected_index) = if let crate::app::ChatState::PinnedMessages {
         messages,

src/ui/mod.rs

@@ -8,6 +8,7 @@ pub mod messages;
 pub mod profile;
 
 use crate::app::{App, AppScreen};
+use crate::tdlib::TdClientTrait;
 use ratatui::layout::Alignment;
 use ratatui::style::{Color, Modifier, Style};
 use ratatui::widgets::Paragraph;
@@ -18,7 +19,7 @@ const MIN_HEIGHT: u16 = 10;
 /// Минимальная ширина терминала
 const MIN_WIDTH: u16 = 40;
 
-pub fn render(f: &mut Frame, app: &mut App) {
+pub fn render<T: TdClientTrait>(f: &mut Frame, app: &mut App<T>) {
     let area = f.area();
 
     // Проверяем минимальный размер терминала

src/ui/profile.rs

@@ -1,4 +1,5 @@
 use crate::app::App;
+use crate::tdlib::TdClientTrait;
 use crate::tdlib::ProfileInfo;
 use ratatui::{
     layout::{Alignment, Constraint, Direction, Layout, Rect},
@@ -9,7 +10,7 @@ use ratatui::{
 };
 
 /// Рендерит режим просмотра профиля
-pub fn render(f: &mut Frame, area: Rect, app: &App, profile: &ProfileInfo) {
+pub fn render<T: TdClientTrait>(f: &mut Frame, area: Rect, app: &App<T>, profile: &ProfileInfo) {
     // Проверяем, показывать ли модалку подтверждения
     let confirmation_step = app.get_leave_group_confirmation_step();
     if confirmation_step > 0 {