Warn when findings could not be turned into tasks

src/index.ts

@@ -125,6 +125,11 @@ async function main() {
   for (const f of response.new ?? []) {
     console.error(`  NEW [${f.severity}] ${f.title}${f.file ? ` (${f.file}${f.line != null ? `:${f.line}` : ""})` : ""}${f.taskId ? ` → task ${f.taskId}` : ""}`);
   }
+  // Findings were accepted but never became work — the run would otherwise look
+  // clean while nothing lands in anyone's queue.
+  if (s.taskFailures) {
+    console.error(`cerberus: WARNING — ${s.taskFailures} finding(s) could not be turned into tasks: ${response.taskError ?? "unknown error"}`);
+  }
 
   const gate = evaluateGate(config.gate.failOn, response);
   if (gate.failed) {

src/types.ts

@@ -57,6 +57,8 @@ export interface UploadResponse {
   baseline?: boolean;
   truncated?: boolean;
   error?: string;
+  /** Set when the backend accepted findings but could not turn them into work. */
+  taskError?: string;
   summary?: {
     total: number;
     new: number;
@@ -65,6 +67,7 @@ export interface UploadResponse {
     fixed: number;
     reopened: number;
     tasksCreated: number;
+    taskFailures?: number;
   };
   new?: Array<{
     title: string;