feat: add Hermes provider

server/shared/tool-approval-registry.js

@@ -0,0 +1,83 @@
+const pendingApprovals = new Map();
+const APPROVAL_MAX_AGE_MS = 30 * 60 * 1000;
+
+// Drop approvals whose run died without resolving them (WS disconnect, process
+// crash) so their captured payloads/closures don't accumulate unbounded.
+function sweepExpiredApprovals(now = Date.now()) {
+  for (const [requestId, entry] of pendingApprovals) {
+    const receivedAt = entry.receivedAt instanceof Date ? entry.receivedAt.getTime() : 0;
+    if (receivedAt && now - receivedAt > APPROVAL_MAX_AGE_MS) {
+      pendingApprovals.delete(requestId);
+    }
+  }
+}
+
+function clearApprovalsForSession(sessionId) {
+  if (!sessionId) {
+    return;
+  }
+  for (const [requestId, entry] of pendingApprovals) {
+    if (entry.sessionId === sessionId) {
+      pendingApprovals.delete(requestId);
+    }
+  }
+}
+
+function registerApproval(requestId, { resolver, sessionId = null, provider = null, meta = {} } = {}) {
+  if (!requestId || typeof resolver !== 'function') {
+    return;
+  }
+
+  sweepExpiredApprovals();
+
+  pendingApprovals.set(requestId, {
+    resolver,
+    sessionId,
+    provider,
+    meta,
+    receivedAt: meta.receivedAt || meta._receivedAt || new Date(),
+  });
+}
+
+function unregisterApproval(requestId) {
+  pendingApprovals.delete(requestId);
+}
+
+function resolveToolApproval(requestId, decision) {
+  const entry = pendingApprovals.get(requestId);
+  if (!entry) {
+    return false;
+  }
+
+  entry.resolver(decision);
+  return true;
+}
+
+function getPendingApprovalsForSession(sessionId) {
+  const pending = [];
+  for (const [requestId, entry] of pendingApprovals.entries()) {
+    if (entry.sessionId !== sessionId) {
+      continue;
+    }
+
+    pending.push({
+      requestId,
+      toolName: entry.meta.toolName || entry.meta._toolName || 'UnknownTool',
+      input: entry.meta.input ?? entry.meta._input,
+      context: entry.meta.context ?? entry.meta._context,
+      sessionId,
+      provider: entry.provider,
+      receivedAt: entry.receivedAt,
+    });
+  }
+
+  return pending;
+}
+
+export {
+  registerApproval,
+  unregisterApproval,
+  resolveToolApproval,
+  getPendingApprovalsForSession,
+  clearApprovalsForSession,
+};