fix: per-invocation env (CLICK_MODE / HUMANIZE) reaches a running daemon

Root cause behind Hermes #1 (CLICK_MODE=dom "does nothing") and #2 (--humanize
"does nothing"): both are env vars the daemon reads, but the daemon's env is
frozen at spawn — set them on a command to an already-running daemon and they
were silently ignored. (Confirmed: setting CLICK_MODE=dom at daemon spawn made
dom_click fire; setting it later did not.)

Fix: the client forwards AGENT_BROWSER_CLICK_MODE / AGENT_BROWSER_HUMANIZE in the
command envelope (_clickMode/_humanize); execute_command applies them per command
— mirrors CLICK_MODE into the process env (interaction::click reads it fresh) and
sets the humanize session level. Each command is authoritative.

Verified on an already-running daemon: CLICK_MODE=dom now fires dom_click
(hits 0→1); --humanize human typing applies.

cli/src/native/actions.rs

@@ -1160,6 +1160,23 @@ impl Drop for DaemonState {
 
 pub async fn execute_command(cmd: &Value, state: &mut DaemonState) -> Value {
     let action = cmd.get("action").and_then(|v| v.as_str()).unwrap_or("");
+
+    // Apply per-invocation overrides the client forwarded (the daemon's own env
+    // is frozen at spawn). CLICK_MODE is read fresh from the process env by
+    // interaction::click, so mirror it here — set when this command provided it,
+    // clear otherwise, so a value from an earlier command never leaks forward.
+    match cmd.get("_clickMode").and_then(|v| v.as_str()) {
+        Some(m) if !m.is_empty() => std::env::set_var("AGENT_BROWSER_CLICK_MODE", m),
+        _ => std::env::remove_var("AGENT_BROWSER_CLICK_MODE"),
+    }
+    // Humanize: set the session level from the client's --humanize / env. Only
+    // set when provided (don't clear — the adaptive per-navigation detector also
+    // owns this level between explicit overrides).
+    if let Some(h) = cmd.get("_humanize").and_then(|v| v.as_str()) {
+        if let Some(level) = super::humanize::HumanizeLevel::parse(h) {
+            super::humanize::set_detected_level(level);
+        }
+    }
     let id = cmd
         .get("id")
         .and_then(|v| v.as_str())