feat: PCA SSH Manager v1.1

Portable SSH client with auto-save sessions.
- Session groups (drag-and-drop between groups)
- 100+ quick commands for Linux and Keenetic routers
- Built-in command suggestion agent
- Dark theme (Catppuccin), PCA branding
- Builds to .exe (Windows) or .app (macOS)

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

build.bat

@@ -0,0 +1,23 @@
+@echo off
+echo === KU SSH Manager — Build ===
+
+where python >nul 2>&1
+if errorlevel 1 (
+    echo Python not found! Install from https://python.org/downloads/
+    pause
+    exit /b 1
+)
+
+echo Installing dependencies...
+pip install paramiko pyinstaller
+
+echo Building .exe...
+pyinstaller --onefile --noconsole --name "KU SSH Manager" ^
+    --add-data "sessions.json;." ^
+    --icon NONE ^
+    ssh_manager.py
+
+echo.
+echo Done! EXE: dist\KU SSH Manager.exe
+echo Copy it anywhere — sessions.json saves next to .exe
+pause