fix: resolve all 40 clippy warnings (dead_code, unused_imports, lints)

- Add #[allow(unused_imports)] on pub re-exports used only by lib/tests
- Add #[allow(dead_code)] on public API items unused in binary target
- Fix collapsible_if, redundant_closure, unnecessary_map_or in main.rs
- Prefix unused test variables with underscore

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

tests/helpers/app_builder.rs

@@ -10,6 +10,7 @@ use tele_tui::tdlib::{ChatInfo, MessageInfo};
 use tele_tui::types::{ChatId, MessageId};
 
 /// Builder для создания тестового App с FakeTdClient\n///\n/// Использует trait-based DI для подмены TdClient на FakeTdClient в тестах.
+#[allow(dead_code)]
 pub struct TestAppBuilder {
     config: Config,
     screen: AppScreen,
@@ -34,6 +35,7 @@ impl Default for TestAppBuilder {
     }
 }
 
+#[allow(dead_code)]
 impl TestAppBuilder {
     pub fn new() -> Self {
         Self {

tests/helpers/fake_tdclient.rs

@@ -9,6 +9,7 @@ use tokio::sync::mpsc;
 
 /// Update события от TDLib (упрощённая версия)
 #[derive(Debug, Clone)]
+#[allow(dead_code)]
 pub enum TdUpdate {
     NewMessage {
         chat_id: ChatId,
@@ -47,6 +48,7 @@ pub enum TdUpdate {
 }
 
 /// Упрощённый mock TDLib клиента для тестов
+#[allow(dead_code)]
 pub struct FakeTdClient {
     // Данные
     pub chats: Arc<Mutex<Vec<ChatInfo>>>,
@@ -86,6 +88,7 @@ pub struct FakeTdClient {
 }
 
 #[derive(Debug, Clone)]
+#[allow(dead_code)]
 pub struct SentMessage {
     pub chat_id: i64,
     pub text: String,
@@ -94,6 +97,7 @@ pub struct SentMessage {
 }
 
 #[derive(Debug, Clone)]
+#[allow(dead_code)]
 pub struct EditedMessage {
     pub chat_id: i64,
     pub message_id: MessageId,
@@ -101,6 +105,7 @@ pub struct EditedMessage {
 }
 
 #[derive(Debug, Clone)]
+#[allow(dead_code)]
 pub struct DeletedMessages {
     pub chat_id: i64,
     pub message_ids: Vec<MessageId>,
@@ -108,6 +113,7 @@ pub struct DeletedMessages {
 }
 
 #[derive(Debug, Clone)]
+#[allow(dead_code)]
 pub struct ForwardedMessages {
     pub from_chat_id: i64,
     pub to_chat_id: i64,
@@ -115,6 +121,7 @@ pub struct ForwardedMessages {
 }
 
 #[derive(Debug, Clone)]
+#[allow(dead_code)]
 pub struct SearchQuery {
     pub chat_id: i64,
     pub query: String,
@@ -158,6 +165,7 @@ impl Clone for FakeTdClient {
     }
 }
 
+#[allow(dead_code)]
 impl FakeTdClient {
     pub fn new() -> Self {
         Self {

tests/helpers/test_data.rs

@@ -5,6 +5,7 @@ use tele_tui::tdlib::{ChatInfo, MessageInfo, ProfileInfo, ReplyInfo};
 use tele_tui::types::{ChatId, MessageId};
 
 /// Builder для создания тестового чата
+#[allow(dead_code)]
 pub struct TestChatBuilder {
     id: i64,
     title: String,
@@ -21,6 +22,7 @@ pub struct TestChatBuilder {
     draft_text: Option<String>,
 }
 
+#[allow(dead_code)]
 impl TestChatBuilder {
     pub fn new(title: &str, id: i64) -> Self {
         Self {
@@ -100,6 +102,7 @@ impl TestChatBuilder {
 }
 
 /// Builder для создания тестового сообщения
+#[allow(dead_code)]
 pub struct TestMessageBuilder {
     id: i64,
     sender_name: String,
@@ -118,6 +121,7 @@ pub struct TestMessageBuilder {
     media_album_id: i64,
 }
 
+#[allow(dead_code)]
 impl TestMessageBuilder {
     pub fn new(content: &str, id: i64) -> Self {
         Self {

tests/navigation.rs

@@ -74,7 +74,7 @@ async fn test_enter_opens_chat() {
 #[tokio::test]
 async fn test_esc_closes_chat() {
     // Состояние: открыт чат 123
-    let selected_chat_id = Some(123);
+    let _selected_chat_id = Some(123);
 
     // Пользователь нажал Esc
     let selected_chat_id: Option<i64> = None;
@@ -97,7 +97,7 @@ async fn test_scroll_messages_in_chat() {
 
     let client = client.with_messages(123, messages);
 
-    let msgs = client.get_messages(123);
+    let _msgs = client.get_messages(123);
 
     // Скролл начинается снизу (последнее сообщение видно)
     let mut scroll_offset: usize = 0;

tests/network_typing.rs

@@ -130,7 +130,7 @@ async fn test_typing_indicator_off() {
 /// Test: Отправка своего typing status
 #[tokio::test]
 async fn test_send_own_typing_status() {
-    let client = FakeTdClient::new();
+    let _client = FakeTdClient::new();
 
     // Пользователь начал печатать в чате 456
     // В реальном App вызывается client.send_chat_action(chat_id, ChatAction::Typing)