Initial commit: ServerManager GUI application

CustomTkinter desktop app for managing remote servers.
Features: SSH terminal, SFTP file transfer, key management,
background status monitoring, server CRUD with dark theme.

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

gui/app.py

@@ -0,0 +1,107 @@
+"""
+Main application window — sidebar + tabview layout.
+"""
+
+import customtkinter as ctk
+from tkinter import messagebox
+
+from core.server_store import ServerStore
+from core.status_checker import StatusChecker
+from gui.sidebar import Sidebar
+from gui.server_dialog import ServerDialog
+from gui.tabs.terminal_tab import TerminalTab
+from gui.tabs.files_tab import FilesTab
+from gui.tabs.info_tab import InfoTab
+from gui.tabs.keys_tab import KeysTab
+
+
+class App(ctk.CTk):
+    def __init__(self):
+        super().__init__()
+
+        # Window config
+        self.title("ServerManager")
+        self.geometry("1100x700")
+        self.minsize(900, 500)
+
+        ctk.set_appearance_mode("dark")
+        ctk.set_default_color_theme("blue")
+
+        # Core
+        self.store = ServerStore()
+        self.checker = StatusChecker(self.store, interval=60)
+
+        # Layout
+        self._build_layout()
+
+        # Status checker
+        self.checker.set_gui_callback(lambda: self.after(0, self._on_status_update))
+        self.checker.start()
+        self.checker.check_all_now()
+
+        # Cleanup on close
+        self.protocol("WM_DELETE_WINDOW", self._on_close)
+
+    def _build_layout(self):
+        # Sidebar
+        self.sidebar = Sidebar(self, self.store, on_select=self._on_server_select)
+        self.sidebar.pack(side="left", fill="y")
+        self.sidebar.add_callback = self._add_server
+        self.sidebar.edit_callback = self._edit_server
+        self.sidebar.delete_callback = self._delete_server
+
+        # Main area
+        main = ctk.CTkFrame(self, fg_color="transparent")
+        main.pack(side="right", fill="both", expand=True)
+
+        # Tabview
+        self.tabview = ctk.CTkTabview(main)
+        self.tabview.pack(fill="both", expand=True, padx=10, pady=10)
+
+        # Tabs
+        self.tabview.add("Terminal")
+        self.tabview.add("Files")
+        self.tabview.add("Info")
+        self.tabview.add("Keys")
+
+        self.terminal_tab = TerminalTab(self.tabview.tab("Terminal"), self.store)
+        self.terminal_tab.pack(fill="both", expand=True)
+
+        self.files_tab = FilesTab(self.tabview.tab("Files"), self.store)
+        self.files_tab.pack(fill="both", expand=True)
+
+        self.info_tab = InfoTab(self.tabview.tab("Info"), self.store, edit_callback=self._edit_server)
+        self.info_tab.pack(fill="both", expand=True)
+
+        self.keys_tab = KeysTab(self.tabview.tab("Keys"), self.store)
+        self.keys_tab.pack(fill="both", expand=True)
+
+    def _on_server_select(self, alias: str):
+        self.terminal_tab.set_server(alias)
+        self.files_tab.set_server(alias)
+        self.info_tab.set_server(alias)
+        self.keys_tab.set_server(alias)
+
+    def _add_server(self):
+        dialog = ServerDialog(self, self.store)
+        self.wait_window(dialog)
+
+    def _edit_server(self, alias: str):
+        server = self.store.get_server(alias)
+        if server:
+            dialog = ServerDialog(self, self.store, server=server)
+            self.wait_window(dialog)
+            self.info_tab.refresh()
+
+    def _delete_server(self, alias: str):
+        if messagebox.askyesno("Delete Server", f"Remove '{alias}'?"):
+            self.store.remove_server(alias)
+            self._on_server_select(None)
+
+    def _on_status_update(self):
+        self.sidebar.update_statuses()
+        self.info_tab.refresh()
+
+    def _on_close(self):
+        self.checker.stop()
+        self.destroy()