fix(engine): realistic worker memory budget + sizing/feedback telemetry

packages/cli/src/telemetry/config.ts

@@ -85,6 +85,39 @@ export interface HyperframesConfig {
    * `DE_PARALLEL_ROUTER_TRIAL_MAX_RENDERS` in `render.ts`.
    */
   deParallelRouterTrialRenderCount?: number;
+  /**
+   * Ring of the last few local renders (newest last). `hyperframes feedback`
+   * attaches these ids — which are the `render_job_id` /
+   * `observability_render_job_id` on this install's PostHog events — to the
+   * feedback it submits, so a wild bug report can be joined to the exact
+   * telemetry rows of the renders it describes.
+   */
+  recentRenders?: RecentRenderRecord[];
+}
+
+/** One entry in {@link HyperframesConfig.recentRenders}. */
+export interface RecentRenderRecord {
+  /** The render job id (`RenderJob.id` — the telemetry `render_job_id`). */
+  id: string;
+  /** ISO timestamp of when the render finished. */
+  at: string;
+  /** Whether the render completed successfully. */
+  ok: boolean;
+}
+
+/** Ring size for {@link HyperframesConfig.recentRenders}. */
+const MAX_RECENT_RENDERS = 5;
+
+/**
+ * Append a finished render to the recent-renders ring (newest last, capped).
+ * Fresh read-modify-write like the trial counters — narrows, but does not
+ * eliminate, lost updates against a concurrent CLI process.
+ */
+export function recordRecentRender(id: string, ok: boolean): void {
+  const config = readConfigFresh();
+  const ring = [...(config.recentRenders ?? []), { id, at: new Date().toISOString(), ok }];
+  config.recentRenders = ring.slice(-MAX_RECENT_RENDERS);
+  writeConfig(config);
 }
 
 const DEFAULT_CONFIG: HyperframesConfig = {
@@ -142,6 +175,18 @@ export function readConfig(): HyperframesConfig {
         typeof parsed.deParallelRouterTrialRenderCount === "number"
           ? parsed.deParallelRouterTrialRenderCount
           : undefined,
+      recentRenders: Array.isArray(parsed.recentRenders)
+        ? parsed.recentRenders
+            .filter(
+              (r): r is RecentRenderRecord =>
+                typeof r === "object" &&
+                r !== null &&
+                typeof (r as RecentRenderRecord).id === "string" &&
+                typeof (r as RecentRenderRecord).at === "string" &&
+                typeof (r as RecentRenderRecord).ok === "boolean",
+            )
+            .slice(-MAX_RECENT_RENDERS)
+        : undefined,
     };
 
     cachedConfig = config;