fix: truncate webfetch content to fit context

Plugins/ZShell/Llm/generation.cpp

@@ -1,5 +1,9 @@
 #include "generation.hpp"
 
+#include "llmclient.hpp"
+#include "messagemodel.hpp"
+#include "session.hpp"
+
 #include <QDateTime>
 
 namespace ZShell::llm {
@@ -46,7 +50,7 @@ QString ChatGeneration::reasoning() const {
 bool ChatGeneration::reasoningActive() const {
 	if (!m_streaming) return false;
 	if (!content().isEmpty()) return false;
-	return !hasRunningTool();
+	return !hasRunningTool() && !hasPendingTool();
 }
 
 qint64 ChatGeneration::reasoningElapsedMs() const {
@@ -87,6 +91,45 @@ bool ChatGeneration::hasRunningTool() const {
 	return false;
 }
 
+bool ChatGeneration::hasPendingTool() const {
+	for (const auto* segment : m_segments)
+		if (segment->type() == LlmSegment::Type::ToolCall &&
+			segment->status() == LlmSegment::Status::Pending)
+			return true;
+	return false;
+}
+
+void ChatGeneration::setApprovalPending(bool value) {
+	if (m_approvalPending == value) return;
+	m_approvalPending = value;
+	Q_EMIT toolApprovalPendingChanged();
+}
+
+QVariantList ChatGeneration::pendingToolCalls() const {
+	QVariantList out;
+	if (!m_approvalPending) return out;
+	for (const auto* segment : m_segments)
+		if (segment->type() == LlmSegment::Type::ToolCall &&
+			segment->status() == LlmSegment::Status::Pending)
+			out.append(QVariant::fromValue(segment));
+	return out;
+}
+
+void ChatGeneration::approveTools() {
+	if (auto* llmClient = client()) llmClient->approveTools();
+}
+
+void ChatGeneration::denyTools() {
+	if (auto* llmClient = client()) llmClient->denyTools();
+}
+
+LlmClient* ChatGeneration::client() const {
+	if (auto* message = qobject_cast<ChatMessage*>(parent()))
+		if (auto* model = qobject_cast<ChatMessageModel*>(message->parent()))
+			if (auto* session = model->session()) return session->client();
+	return nullptr;
+}
+
 void ChatGeneration::updateReasoningActive() {
 	const bool active = reasoningActive();
 	if (m_reasoningActive == active) return;
@@ -177,7 +220,9 @@ LlmSegment* ChatGeneration::beginToolCall(
 		LlmSegment::Type::ToolCall, QDateTime::currentMSecsSinceEpoch(), this);
 	segment->setName(name);
 	segment->setToolCallId(toolCallId);
-	segment->setStatus(LlmSegment::Status::Running);
+	// Awaiting user approval until LlmClient::approveTools() promotes it
+	// to Running; denyTools()/endStream() finalize it as an error.
+	segment->setStatus(LlmSegment::Status::Pending);
 	segment->begin();
 	addSegment(segment);
 	Q_EMIT toolStateChanged();