feat: move terminal settings, look and ssh tools into ssh-terminal plugin

src/backend/database/db/schema.ts

@@ -193,6 +193,9 @@ export const hosts = sqliteTable(
       .default(true),
     statusCheckInterval: integer("status_check_interval"),
     terminalConfig: text("terminal_config"),
+    // SSH connection options core's connect pipeline reads (keepalive,
+    // legacy algorithms, agent, environment). JSON.
+    sshOptions: text("ssh_options"),
     quickActions: text("quick_actions"),
     notes: text("notes"),
     enableSsh: integer("enable_ssh", { mode: "boolean" }).notNull().default(true),