Load limiting safeguards

dashboard/src/token-cost.md

@@ -3,7 +3,7 @@ title: Token Cost
 ---
 
 ```js
-import {API} from "./components/config.js";
+import {apiFetch, pollDelay, sleep} from "./components/config.js";
 import {refCell} from "./components/ref-cell.js";
 const POLL = 60_000;
 ```
@@ -11,14 +11,15 @@ const POLL = 60_000;
 ```js
 // Fetch token events, by-repo summary, workstreams, and tasks in parallel
 const tokenState = (async function*() {
+  let failures = 0;
   while (true) {
     let byRepo = [], events = [], wsMap = {}, taskMap = {}, ok = false;
     try {
       const [r1, r2, r3, r4] = await Promise.all([
-        fetch(`${API}/token-events/by-repo/`),
-        fetch(`${API}/token-events/?limit=1000`),
-        fetch(`${API}/workstreams/`),
-        fetch(`${API}/tasks/`),
+        apiFetch("/token-events/by-repo/"),
+        apiFetch("/token-events/?limit=1000"),
+        apiFetch("/workstreams/"),
+        apiFetch("/tasks/"),
       ]);
       ok = r1.ok && r2.ok;
       if (ok) {
@@ -34,8 +35,9 @@ const tokenState = (async function*() {
         for (const t of taskList) taskMap[t.id] = t;
       }
     } catch {}
+    failures = ok ? 0 : failures + 1;
     yield {byRepo, events, wsMap, taskMap, ok, ts: new Date()};
-    await new Promise(res => setTimeout(res, POLL));
+    await sleep(pollDelay({ok, base: POLL, failures}));
   }
 })();
 ```