fix: truncate context logic

Plugins/ZShell/Llm/filetool.hpp

@@ -4,10 +4,6 @@
 
 namespace ZShell::llm {
 
-// Lets the model read text files from the local filesystem, in
-// byte-offset windows small enough to fit the context. Primarily used to
-// page through the full webfetch output stored under
-// /tmp/zshell-llm/webfetch/.
 class FileReadTool : public LlmTool {
 	Q_OBJECT
 
@@ -20,6 +16,7 @@ class FileReadTool : public LlmTool {
 	void execute(
 		const QString& toolCallId,
 		const QJsonObject& args,
+		int outputBudgetChars,
 		std::function<void(const QJsonObject& result)> done) override;
 };