lightpanda (#646)

* lightpanda

* lightpanda benchmarks

* improvements

* fixes

* improvements

cli/src/connection.rs

@@ -234,6 +234,7 @@ pub struct DaemonOptions<'a> {
     pub action_policy: Option<&'a str>,
     pub confirm_actions: Option<&'a str>,
     pub native: bool,
+    pub engine: Option<&'a str>,
 }
 
 fn apply_daemon_env(cmd: &mut Command, session: &str, opts: &DaemonOptions) {
@@ -297,6 +298,9 @@ fn apply_daemon_env(cmd: &mut Command, session: &str, opts: &DaemonOptions) {
     if let Some(ca) = opts.confirm_actions {
         cmd.env("AGENT_BROWSER_CONFIRM_ACTIONS", ca);
     }
+    if let Some(engine) = opts.engine {
+        cmd.env("AGENT_BROWSER_ENGINE", engine);
+    }
 }
 
 pub fn ensure_daemon(session: &str, opts: &DaemonOptions) -> Result<DaemonResult, String> {