diff --git a/gui/ollie9pclient.cpp b/gui/ollie9pclient.cpp
index a42b354..7adc160 100644
--- a/gui/ollie9pclient.cpp
+++ b/gui/ollie9pclient.cpp
@@ -363,7 +363,11 @@ QString Ollie9pClient::readLog()
 QString Ollie9pClient::readLogForSession(const QString &sessionId, const QString &agentId)
 {
     if (sessionId.isEmpty() || agentId.isEmpty()) return {};
-    QByteArray out = run9p({"read", "session/" + sessionId + "/agent/" + agentId + "/log"});
+    QString sessName = sessionNameForId(sessionId);
+    if (sessName.isEmpty()) sessName = sessionId;
+    QString agentName = agentNameForId(sessionId, agentId);
+    if (agentName.isEmpty()) agentName = agentId;
+    QByteArray out = run9p({"read", "session/" + sessName + "/agent/" + agentName + "/log"});
     return QString::fromUtf8(out);
 }
 
@@ -412,7 +416,11 @@ bool Ollie9pClient::killSession(const QString &sessionId)
         stopStreams();
     }
 
-    QString path = "session/" + sessionId + "/ctl";
+    // Resolve the directory name from the immutable session ID
+    QString sessName = sessionNameForId(sessionId);
+    if (sessName.isEmpty()) sessName = sessionId;
+
+    QString path = "session/" + sessName + "/ctl";
     QProcess proc;
     proc.start(ninepBin(), {"-a", serverAddr(), "write", path});
     proc.waitForStarted(3000);
@@ -432,7 +440,9 @@ QString Ollie9pClient::getConfig()
 QStringList Ollie9pClient::getAgents(const QString &sessionId)
 {
     if (sessionId.isEmpty()) return {};
-    QByteArray out = run9p({"ls", "session/" + sessionId + "/agent"});
+    QString sessName = sessionNameForId(sessionId);
+    if (sessName.isEmpty()) sessName = sessionId;
+    QByteArray out = run9p({"ls", "session/" + sessName + "/agent"});
     QString raw = QString::fromUtf8(out).trimmed();
     if (raw.isEmpty()) return {};
     QStringList all = raw.split('\n', Qt::SkipEmptyParts);
@@ -596,9 +606,13 @@ bool Ollie9pClient::renameSession(const QString &sessionId, const QString &newNa
     // Session names are mutable display names, not directory IDs. Writing the
     // name file also avoids relying on Twstat, which is not implemented by all
     // 9P frontends.
+    // Resolve the directory name from the immutable session ID
+    QString sessName = sessionNameForId(sessionId);
+    if (sessName.isEmpty()) sessName = sessionId;
+
     QProcess proc;
     proc.setProgram(bin);
-    proc.setArguments({"-a", serverAddr(), "write", "session/" + sessionId + "/name"});
+    proc.setArguments({"-a", serverAddr(), "write", "session/" + sessName + "/name"});
     proc.start();
     if (!proc.waitForStarted(3000)) {
         qDebug() << "renameSession failed to start:" << proc.errorString();
@@ -649,10 +663,16 @@ bool Ollie9pClient::renameAgent(const QString &sessionId, const QString &agentId
     if (active)
         stopAgentStreams();
 
+    // Resolve directory names from immutable IDs
+    QString sessName = sessionNameForId(sessionId);
+    if (sessName.isEmpty()) sessName = sessionId;
+    QString agentName = agentNameForId(sessionId, agentId);
+    if (agentName.isEmpty()) agentName = agentId;
+
     QProcess proc;
     proc.setProgram(bin);
     proc.setArguments({"-a", serverAddr(), "write",
-        "session/" + sessionId + "/agent/" + agentId + "/name"});
+        "session/" + sessName + "/agent/" + agentName + "/name"});
     proc.start();
     if (!proc.waitForStarted(3000)) {
         qDebug() << "renameAgent failed to start:" << proc.errorString();