SSH keys in account settings; wrappers for agents, terminal and git

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

server/src/terminal.rs

@@ -162,7 +162,8 @@ pub fn spawn(app: &Arc<App>, user: &User, cwd: &Path, session_id: Option<String>
                 .current_dir(cwd)
                 .env("TERM", "xterm-256color")
                 .env("CODECRAFT", "1")
-                .envs(crate::gitcreds::identity_env(app, &user.id));
+                .envs(crate::gitcreds::identity_env(app, &user.id))
+                .envs(crate::sshkeys::env(app, user));
             match crate::gitcreds::global_config(app, user) {
                 Some(cfg) => c.env("GIT_CONFIG_GLOBAL", cfg),
                 None => c,