fix: warnings and icon rendering

- Remove unused imports (HashMap, TextEdit)
- Remove unnecessary mut on fonts
- Replace ✕ (U+2715) with × (U+00D7) for close/cross icons
- Replace ＋ (U+FF0B) with + (U+002B) for New Connection button
- Replace ▲/▼ (U+25B2/U+25BC) with ↑/↓ (U+2191/U+2193) for sort arrows

src/ui/state.rs

@@ -1,4 +1,3 @@
-use std::collections::HashMap;
 use std::sync::Arc;
 
 use crate::domain::connection::{ConnectionParams, ConnectionStatus};
@@ -45,17 +44,18 @@ pub struct HistoryEntry {
 pub struct AppState {
     pub tabs: Vec<ConnectionTab>,
     pub active_tab: usize,
+
     pub local_path: String,
     pub local_entries: Vec<FileEntry>,
     pub local_selected: Option<String>,
+
     pub show_connect_dialog: bool,
     pub show_bookmarks: bool,
     pub show_history: bool,
+
     pub bookmarks: Vec<Bookmark>,
     pub history: Vec<HistoryEntry>,
-    pub tree_expanded: HashMap<String, bool>,
-    pub tree_children: HashMap<String, Vec<FileEntry>>,
-    pub tree_loading: HashMap<String, bool>,
+
     pub connect_label: String,
     pub connect_host: String,
     pub connect_port: String,
@@ -65,38 +65,50 @@ pub struct AppState {
     pub connect_protocol: usize,
     pub connect_error: String,
     pub connect_loading: bool,
+
     pub show_queue: bool,
     pub queue_tasks: Vec<TransferTask>,
+
     pub status_message: String,
-    pub agg_speed: u64,
     pub connected_count: usize,
+
+    // action flags — выставляются тулбаром, обрабатываются в app.rs
+    pub pending_refresh: bool,
+    pub pending_mkdir: bool,
+    pub pending_delete: bool,
+    pub pending_rename: bool,
+
     pub pending_connect: Option<PendingConnect>,
     pub pending_remote_list: Vec<PendingRemoteList>,
 }
 
 impl Default for AppState {
     fn default() -> Self {
+        let home = dirs::home_dir()
+            .unwrap_or_default()
+            .to_string_lossy()
+            .to_string();
         Self {
             tabs: Vec::new(),
             active_tab: 0,
-            local_path: dirs::home_dir()
-                .unwrap_or_default()
-                .to_string_lossy()
-                .to_string(),
+            local_path: home.clone(),
             local_entries: Vec::new(),
             local_selected: None,
             show_connect_dialog: false,
             show_bookmarks: false,
             show_history: false,
             bookmarks: vec![
-                Bookmark { name: "Home".into(), path: dirs::home_dir().unwrap_or_default().to_string_lossy().to_string() },
-                Bookmark { name: "Root".into(), path: "/".into() },
-                Bookmark { name: "Downloads".into(), path: dirs::download_dir().map(|p| p.to_string_lossy().to_string()).unwrap_or_else(|| "/tmp".into()) },
+                Bookmark { name: "Home".into(),      path: home.clone() },
+                Bookmark { name: "Desktop".into(),   path: format!("{}/Desktop", home) },
+                Bookmark { name: "Documents".into(), path: format!("{}/Documents", home) },
+                Bookmark { name: "Downloads".into(), path: dirs::download_dir()
+                    .map(|p| p.to_string_lossy().to_string())
+                    .unwrap_or_else(|| format!("{}/Downloads", home)) },
+                Bookmark { name: "Pictures".into(),  path: format!("{}/Pictures", home) },
+                Bookmark { name: "Music".into(),     path: format!("{}/Music", home) },
+                Bookmark { name: "Videos".into(),    path: format!("{}/Videos", home) },
             ],
             history: Vec::new(),
-            tree_expanded: HashMap::new(),
-            tree_children: HashMap::new(),
-            tree_loading: HashMap::new(),
             connect_label: String::new(),
             connect_host: String::new(),
             connect_port: "22".into(),
@@ -109,8 +121,11 @@ impl Default for AppState {
             show_queue: false,
             queue_tasks: Vec::new(),
             status_message: "Ready".into(),
-            agg_speed: 0,
             connected_count: 0,
+            pending_refresh: false,
+            pending_mkdir: false,
+            pending_delete: false,
+            pending_rename: false,
             pending_connect: None,
             pending_remote_list: Vec::new(),
         }
@@ -119,34 +134,23 @@ impl Default for AppState {
 
 impl AppState {
     pub fn active_tab_mut(&mut self) -> Option<&mut ConnectionTab> {
-        if self.tabs.is_empty() {
-            None
-        } else {
-            let idx = self.active_tab.min(self.tabs.len() - 1);
-            Some(&mut self.tabs[idx])
-        }
+        if self.tabs.is_empty() { return None; }
+        let idx = self.active_tab.min(self.tabs.len() - 1);
+        Some(&mut self.tabs[idx])
     }
 
     pub fn active_tab_ref(&self) -> Option<&ConnectionTab> {
-        if self.tabs.is_empty() {
-            None
-        } else {
-            let idx = self.active_tab.min(self.tabs.len() - 1);
-            Some(&self.tabs[idx])
-        }
+        if self.tabs.is_empty() { return None; }
+        let idx = self.active_tab.min(self.tabs.len() - 1);
+        Some(&self.tabs[idx])
     }
 
     pub fn add_history(&mut self, host: &str, port: u16, user: &str) {
         use chrono::Local;
         let now = Local::now().format("%H:%M %d.%m").to_string();
         self.history.insert(0, HistoryEntry {
-            host: host.into(),
-            port,
-            user: user.into(),
-            time: now,
+            host: host.into(), port, user: user.into(), time: now,
         });
-        if self.history.len() > 20 {
-            self.history.truncate(20);
-        }
+        if self.history.len() > 20 { self.history.truncate(20); }
     }
 }