Add Claude Code integration: shared config + Setup tab

- Shared servers.json at ~/.server-connections/ (GUI + Claude Code)
- Setup tab: one-click install of ssh.py, /ssh skill, SSH key
- Duplicate checks — safe to run multiple times
- tools/ssh.py + tools/skill-ssh.md bundled
- Updated README with integration docs (EN/RU/ZH)
- Deploy guide for new machines

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

core/server_store.py

@@ -4,11 +4,16 @@ Server store — CRUD + JSON persistence + observer pattern.
 
 import json
 import os
+import shutil
 from typing import Callable, Optional
 
-CONFIG_DIR = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "config")
-SERVERS_FILE = os.path.join(CONFIG_DIR, "servers.json")
-EXAMPLE_FILE = os.path.join(CONFIG_DIR, "servers.example.json")
+# Shared config — same file used by ssh.py and Claude Code /ssh skill
+SHARED_DIR = os.path.expanduser("~/.server-connections")
+SERVERS_FILE = os.path.join(SHARED_DIR, "servers.json")
+
+# Fallback: local config dir (for example file)
+LOCAL_CONFIG_DIR = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "config")
+EXAMPLE_FILE = os.path.join(LOCAL_CONFIG_DIR, "servers.example.json")
 
 SERVER_TYPES = ["ssh", "telnet", "rdp", "mariadb", "mssql", "postgresql"]
 
@@ -39,7 +44,7 @@ class ServerStore:
             self._save()
 
     def _save(self):
-        os.makedirs(CONFIG_DIR, exist_ok=True)
+        os.makedirs(SHARED_DIR, exist_ok=True)
         with open(SERVERS_FILE, "w", encoding="utf-8") as f:
             json.dump(self._data, f, indent=2, ensure_ascii=False)