loopd: the self-test checks the model's tags against the tokenizer

Co-Authored-By: ornith-1.5-35b-a3b <agent@wntrmute.dev>

crates/loopd/tests/serve.rs

@@ -5,7 +5,7 @@ mod support;
 use std::os::unix::fs::PermissionsExt;
 use std::process::{Command, Stdio};
 use std::time::Duration;
-use support::{FakeServer, Home, Reply};
+use support::{FakeServer, Home, Reply, tokenizer};
 
 fn config_file(home: &Home, server: &FakeServer, expect_slots: u32) -> std::path::PathBuf {
     let text = format!(
@@ -37,6 +37,7 @@ home = "{}"
 
 fn healthy_routes(server: &FakeServer) {
     server.route("/props", vec![Reply::fixture("props")]);
+    server.respond("/tokenize", tokenizer);
     server.route(
         "/v1/chat/completions",
         vec![
@@ -82,6 +83,11 @@ fn serve_runs_the_self_test_then_binds_the_socket_with_mode_0600() {
         3,
         "the three self-test completions ran"
     );
+    assert_eq!(
+        server.requests_to("/tokenize").len(),
+        2 * bxcore::sanitize::TAGS.len(),
+        "the tag check ran: each tag and its neutralised form"
+    );
 }
 
 #[test]