Better VRAM GC and session cleanup QVAC

native-host/agent/sessions.js

@@ -65,7 +65,7 @@ function create(meta) {
   return summary;
 }
 
-function load(id) {
+function load(id, opts) {
   const dir = sessionDir(id);
   let summary;
   try {
@@ -74,7 +74,7 @@ function load(id) {
     throw new Error('session not found: ' + id);
   }
   summary.history = readJsonl(path.join(dir, 'chat_history.jsonl'));
-  summary.updates = readJsonl(path.join(dir, 'updates.jsonl'));
+  summary.updates = opts && opts.updates ? readJsonl(path.join(dir, 'updates.jsonl')) : [];
   return summary;
 }
 
@@ -118,6 +118,50 @@ function writePlan(id, text) {
   return file;
 }
 
+function rmDeep(dir) {
+  let ents = [];
+  try {
+    ents = fs.readdirSync(dir, { withFileTypes: true });
+  } catch (_) {
+    return;
+  }
+  for (const ent of ents) {
+    const child = path.join(dir, ent.name);
+    const isDir = typeof ent.isDirectory === 'function' ? ent.isDirectory() : false;
+    if (isDir) rmDeep(child);
+    else {
+      try {
+        fs.unlinkSync(child);
+      } catch (_) {}
+    }
+  }
+  try {
+    fs.rmdirSync(dir);
+  } catch (_) {}
+}
+
+function remove(id) {
+  if (!id) return false;
+  const dir = path.join(sessionsRoot(), sanitizeId(id));
+  try {
+    if (typeof fs.rmSync === 'function') fs.rmSync(dir, { recursive: true, force: true });
+    else rmDeep(dir);
+    return true;
+  } catch (_) {
+    return false;
+  }
+}
+
+function exists(id) {
+  if (!id) return false;
+  try {
+    fs.statSync(path.join(sessionsRoot(), sanitizeId(id), 'summary.json'));
+    return true;
+  } catch (_) {
+    return false;
+  }
+}
+
 function list() {
   const root = sessionsRoot();
   let names = [];
@@ -149,5 +193,7 @@ module.exports = {
   readPlan,
   writePlan,
   list,
+  remove,
+  exists,
   makeId,
 };