feat: FTPS, AppError, Site Manager, tests, multi-window, auto-clear, CI/CD, virtual scroll

- FTPS: реализован FtpsClient через suppaftp + async-native-tls
- AppError: кастомный enum с Serialize вместо Result<T, String>
- Site Manager UI: создание/редактирование/удаление сайтов
- Тесты: 53 тестов (domain, storage, transfer, fs, remote)
- Multi-window: новое окно + сохранение геометрии
- Auto-clear: воркер чистит завершённые задачи по таймеру
- CI/CD: 3-ступенчатый пайплайн (lint→build→test) с кэшированием
- Virtual scroll: fileTable с рендером только видимых строк
- UI: исправлены close-кнопки, color-scheme для select, скриншоты в README

.github/workflows/rust.yml

@@ -10,13 +10,74 @@ env:
   CARGO_TERM_COLOR: always
 
 jobs:
-  build:
-
+  lint:
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v4
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
+      - uses: actions/checkout@v4
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libwebkit2gtk-4.1-dev \
+            libjavascriptcoregtk-4.1-dev \
+            libsoup-3.0-dev \
+            libgtk-3-dev \
+            libappindicator3-dev \
+            librsvg2-dev \
+            patchelf \
+            libssl-dev \
+            libdbus-1-dev
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy, rustfmt
+      - uses: Swatinem/rust-cache@v2
+      - name: Check formatting
+        run: cargo fmt --check
+      - name: Lint with clippy
+        run: cargo clippy -- -D warnings
+
+  build:
+    runs-on: ubuntu-latest
+    needs: [lint]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libwebkit2gtk-4.1-dev \
+            libjavascriptcoregtk-4.1-dev \
+            libsoup-3.0-dev \
+            libgtk-3-dev \
+            libappindicator3-dev \
+            librsvg2-dev \
+            patchelf \
+            libssl-dev \
+            libdbus-1-dev
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - name: Build (release)
+        run: cargo build --release
+
+  test:
+    runs-on: ubuntu-latest
+    needs: [build]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libwebkit2gtk-4.1-dev \
+            libjavascriptcoregtk-4.1-dev \
+            libsoup-3.0-dev \
+            libgtk-3-dev \
+            libappindicator3-dev \
+            librsvg2-dev \
+            patchelf \
+            libssl-dev \
+            libdbus-1-dev
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - name: Run tests
+        run: cargo test