feat: persist sgclaw browser conversations

src/compat/browser_tool_adapter.rs

@@ -105,6 +105,7 @@ fn parse_browser_action_request(args: Value) -> Result<BrowserActionRequest, Bro
     let action_name = take_required_string(&mut args, "action")?;
     let expected_domain = take_required_string(&mut args, "expected_domain")?;
     let action = parse_action(&action_name)?;
+    validate_action_params(&action_name, &args)?;
 
     Ok(BrowserActionRequest {
         action,
@@ -146,6 +147,37 @@ fn failed_tool_result(error: String) -> ToolResult {
     }
 }
 
+fn validate_action_params(
+    action_name: &str,
+    args: &Map<String, Value>,
+) -> Result<(), BrowserActionAdapterError> {
+    match action_name {
+        "click" | "getText" => require_non_empty_string(args, "selector", action_name),
+        "type" => {
+            require_non_empty_string(args, "selector", action_name)?;
+            require_non_empty_string(args, "text", action_name)
+        }
+        "navigate" => require_non_empty_string(args, "url", action_name),
+        _ => Ok(()),
+    }
+}
+
+fn require_non_empty_string(
+    args: &Map<String, Value>,
+    key: &'static str,
+    action_name: &str,
+) -> Result<(), BrowserActionAdapterError> {
+    match args.get(key) {
+        Some(Value::String(value)) if !value.trim().is_empty() => Ok(()),
+        Some(other) => Err(BrowserActionAdapterError::InvalidArguments(format!(
+            "{action_name} requires a non-empty {key}, got {other}"
+        ))),
+        None => Err(BrowserActionAdapterError::InvalidArguments(format!(
+            "{action_name} requires {key}"
+        ))),
+    }
+}
+
 fn format_browser_action_error(data: &Value) -> String {
     if let Some(error) = data.get("error") {
         if let Some(message) = error.get("message").and_then(Value::as_str) {