fix: load DeepSeek config from browser runtime

tests/compat_config_test.rs

@@ -1,3 +1,4 @@
+use std::fs;
 use std::path::Path;
 use std::sync::{Mutex, OnceLock};
 
@@ -7,6 +8,7 @@ use sgclaw::compat::config_adapter::{
     zeroclaw_workspace_dir,
 };
 use sgclaw::config::DeepSeekSettings;
+use uuid::Uuid;
 
 fn env_lock() -> &'static Mutex<()> {
     static LOCK: OnceLock<Mutex<()>> = OnceLock::new();
@@ -53,3 +55,44 @@ fn zeroclaw_config_adapter_uses_deterministic_workspace_dir() {
     assert_eq!(config.default_model.as_deref(), Some("deepseek-reasoner"));
     assert_eq!(config.api_url.as_deref(), Some("https://proxy.example.com/v1"));
 }
+
+#[test]
+fn deepseek_settings_reload_from_browser_config_path_after_file_changes() {
+    let root = std::env::temp_dir().join(format!("sgclaw-config-{}", Uuid::new_v4()));
+    fs::create_dir_all(&root).unwrap();
+    let config_path = root.join("sgclaw_config.json");
+
+    fs::write(
+        &config_path,
+        r#"{
+  "apiKey": "sk-first",
+  "baseUrl": "",
+  "model": ""
+}"#,
+    )
+    .unwrap();
+
+    let first = DeepSeekSettings::load(Some(config_path.as_path()))
+        .unwrap()
+        .expect("expected config file to produce settings");
+    assert_eq!(first.api_key, "sk-first");
+    assert_eq!(first.base_url, "https://api.deepseek.com");
+    assert_eq!(first.model, "deepseek-chat");
+
+    fs::write(
+        &config_path,
+        r#"{
+  "apiKey": "sk-second",
+  "baseUrl": "https://proxy.example.com/v1",
+  "model": "deepseek-reasoner"
+}"#,
+    )
+    .unwrap();
+
+    let second = DeepSeekSettings::load(Some(config_path.as_path()))
+        .unwrap()
+        .expect("expected updated config file to produce settings");
+    assert_eq!(second.api_key, "sk-second");
+    assert_eq!(second.base_url, "https://proxy.example.com/v1");
+    assert_eq!(second.model, "deepseek-reasoner");
+}