fix(telemetry): review findings

- wau/mau trailing scans run hourly and on day finalization, not every tick
- exclusion lookup failures cached 30s so an st outage cannot amplify
- unverified relation filter dropped; player emptiness checked in js
- anonymous unauthenticated read failures no longer logged
- alerts and exclusions ensure supertokens init on cold pods

src/lib/telemetry/alerts.server.ts

@@ -31,6 +31,8 @@ const getAdminPlayerIds = async (): Promise<string[]> => {
     return adminPlayersCache.playerIds;
   }
 
+  const { ensureSuperTokensBackend } = await import("@/lib/supertokens/server");
+  ensureSuperTokensBackend();
   const UserRoles = (await import("supertokens-node/recipe/userroles")).default;
   const response = await UserRoles.getUsersThatHaveRole("public", ADMIN_ROLE);
   const users = response.status === "OK" ? response.users : [];

src/lib/telemetry/exclusions.server.ts

@@ -3,6 +3,7 @@ import { Logger } from "@/lib/logger";
 const logger = new Logger("Telemetry");
 
 const CACHE_TTL_MS = 10 * 60 * 1000;
+const FAILURE_TTL_MS = 30 * 1000;
 
 const normalizePhone = (phone: string): string => phone.replace(/[^\d+]/g, "");
 
@@ -26,6 +27,8 @@ export const getExcludedPlayerIds = async (): Promise<Set<string>> => {
 
   if (phones.length > 0) {
     try {
+      const { ensureSuperTokensBackend } = await import("@/lib/supertokens/server");
+      ensureSuperTokensBackend();
       const SuperTokens = (await import("supertokens-node")).default;
       const { pbAdmin } = await import("@/lib/pocketbase/client");
       for (const phoneNumber of phones) {
@@ -37,6 +40,9 @@ export const getExcludedPlayerIds = async (): Promise<Set<string>> => {
       }
     } catch (error) {
       logger.error("Failed to resolve telemetry exclusions", error);
+      // Short-lived failure cache: an outage must not amplify into a
+      // per-request SuperTokens lookup storm.
+      cache = { playerIds, expiresAt: now + FAILURE_TTL_MS };
       return playerIds;
     }
   }

src/lib/telemetry/rollup-core.test.ts

@@ -95,6 +95,18 @@ describe("buildDayRollups", () => {
     }
   });
 
+  it("omits wau/mau rows when trailing scans were skipped", () => {
+    const rollups = buildDayRollups("2026-08-25", {
+      activities: newActivityAccumulator(),
+      clientEvents: newClientEventAccumulator(),
+      clientErrors: newClientErrorAccumulator(),
+      partial: true,
+    });
+    expect(rollupFor(rollups, "wau")).toBeUndefined();
+    expect(rollupFor(rollups, "mau")).toBeUndefined();
+    expect(rollupFor(rollups, "dau")?.value).toBe(0);
+  });
+
   it("marks partial days and is deterministic across re-runs", () => {
     const build = () =>
       buildDayRollups("2026-08-25", {

src/lib/telemetry/rollup-core.ts

@@ -113,8 +113,8 @@ export const buildDayRollups = (
     activities: ActivityAccumulator;
     clientEvents: ClientEventAccumulator;
     clientErrors: ClientErrorAccumulator;
-    wau: number;
+    wau?: number;
-    mau: number;
+    mau?: number;
     partial: boolean;
   }
 ): RollupInput[] => {
@@ -133,8 +133,8 @@ export const buildDayRollups = (
 
   const dayPlayers = new Set([...activities.players, ...clientEvents.players]);
   push("dau", "", dayPlayers.size);
-  push("wau", "", wau);
+  if (wau !== undefined) push("wau", "", wau);
-  push("mau", "", mau);
+  if (mau !== undefined) push("mau", "", mau);
 
   for (const [name, fn] of activities.perFn) {
     push("server_fn.count", name, fn.count);

src/lib/telemetry/rollup.server.ts

@@ -30,7 +30,7 @@ const dayFilter = (dateStr: string): string =>
 
 const distinctPlayersInWindow = async (fromDate: string, toDateExclusive: string): Promise<number> => {
   const players = new Set<string>();
-  const filter = `created >= '${bound(fromDate)}' && created < '${bound(toDateExclusive)}' && player != ''`;
+  const filter = `created >= '${bound(fromDate)}' && created < '${bound(toDateExclusive)}'`;
 
   await pbAdmin.pageCollection<{ player?: string }>("activities", { filter, fields: "player,created" }, (rows) => {
     for (const row of rows) if (row.player) players.add(row.player);
@@ -42,7 +42,10 @@ const distinctPlayersInWindow = async (fromDate: string, toDateExclusive: string
   return players.size;
 };
 
-export const runRollups = async (dateStr: string): Promise<number> => {
+export const runRollups = async (
+  dateStr: string,
+  opts: { trailing?: boolean } = {}
+): Promise<number> => {
   await pbAdmin.authPromise;
 
   const activities = newActivityAccumulator();
@@ -65,11 +68,16 @@ export const runRollups = async (dateStr: string): Promise<number> => {
     (rows) => accumulateClientErrors(clientErrors, rows)
   );
 
-  const nextDay = addDays(dateStr, 1);
+  // Trailing scans re-read the full 7/30-day windows; hourly at most.
-  const [wau, mau] = await Promise.all([
+  let wau: number | undefined;
-    distinctPlayersInWindow(addDays(dateStr, -6), nextDay),
+  let mau: number | undefined;
-    distinctPlayersInWindow(addDays(dateStr, -29), nextDay),
+  if (opts.trailing !== false) {
-  ]);
+    const nextDay = addDays(dateStr, 1);
+    [wau, mau] = await Promise.all([
+      distinctPlayersInWindow(addDays(dateStr, -6), nextDay),
+      distinctPlayersInWindow(addDays(dateStr, -29), nextDay),
+    ]);
+  }
 
   const partial = dateStr >= utcDay(new Date());
   const rollups = buildDayRollups(dateStr, {
@@ -89,11 +97,14 @@ export const runRollups = async (dateStr: string): Promise<number> => {
   return rollups.length;
 };
 
-export const runScheduledRollups = async (lastRunDay?: string): Promise<string> => {
+export const runScheduledRollups = async (
+  lastRunDay: string | undefined,
+  opts: { trailing?: boolean } = {}
+): Promise<string> => {
   const today = utcDay(new Date());
   if (lastRunDay && lastRunDay !== today) {
-    await runRollups(lastRunDay);
+    await runRollups(lastRunDay, { trailing: true });
   }
-  await runRollups(today);
+  await runRollups(today, opts);
   return today;
 };

src/lib/telemetry/scheduler.server.ts

@@ -6,6 +6,7 @@ const logger = new Logger("Telemetry");
 
 const ROLLUP_INTERVAL_MS = 15 * 60 * 1000;
 const ALERT_INTERVAL_MS = 5 * 60 * 1000;
+const TRAILING_INTERVAL_MS = 60 * 60 * 1000;
 
 interface SchedulerStatus {
   running: boolean;
@@ -21,12 +22,16 @@ let initialized = false;
 let rollupInFlight = false;
 let alertsInFlight = false;
 let lastRollupDay: string | undefined;
+let lastTrailingAt = 0;
 
 const tickRollups = async () => {
   if (rollupInFlight) return;
   rollupInFlight = true;
   try {
-    lastRollupDay = await runScheduledRollups(lastRollupDay);
+    const now = Date.now();
+    const trailing = now - lastTrailingAt >= TRAILING_INTERVAL_MS;
+    lastRollupDay = await runScheduledRollups(lastRollupDay, { trailing });
+    if (trailing) lastTrailingAt = now;
     status.lastRollupAt = new Date().toISOString();
     status.lastRollupError = undefined;
   } catch (error) {

src/utils/activities.test.ts

@@ -308,6 +308,42 @@ describe("serverFnLoggingMiddleware control flow and dedup", () => {
     expect(h.createActivity.mock.calls[0][0].error).toContain("FORBIDDEN");
   });
 
+  it("does not record anonymous Unauthenticated failures", async () => {
+    setRequest("http://localhost:3000/_serverFn/x");
+
+    await expect(
+      runMiddleware({
+        next: async () => {
+          throw new Error("Unauthenticated");
+        },
+        data: undefined,
+        context: {},
+        serverFnMeta: { id: "x", name: "fetchMe" },
+      })
+    ).rejects.toThrow("Unauthenticated");
+
+    await flushWrites();
+    expect(h.createActivity).not.toHaveBeenCalled();
+  });
+
+  it("still records Unauthenticated failures for identified actors", async () => {
+    setRequest("http://localhost:3000/_serverFn/x");
+    setRequestActor(h.request as unknown as Request, { playerId: "p1" });
+
+    await expect(
+      runMiddleware({
+        next: async () => {
+          throw new Error("Unauthenticated");
+        },
+        data: undefined,
+        context: {},
+        serverFnMeta: { id: "x", name: "fetchMe" },
+      })
+    ).rejects.toThrow("Unauthenticated");
+
+    await vi.waitFor(() => expect(h.createActivity).toHaveBeenCalledTimes(1));
+  });
+
   it("does not record activity for excluded players", async () => {
     setRequest("http://localhost:3000/_serverFn/doThing");
     setRequestActor(h.request as unknown as Request, { playerId: "excluded-player" });

src/utils/activities.ts

@@ -129,6 +129,12 @@ export const serverFnLoggingMiddleware = createMiddleware({
     const duration = Date.now() - startTime;
     const errorMessage = error instanceof Error ? error.message : String(error);
 
+    // Anonymous visitors (crawlers included) hitting authed reads are noise,
+    // not failures worth a row each.
+    if (errorMessage === "Unauthenticated" && !resolveActor()) {
+      throw error;
+    }
+
     recordActivity({
       name,
       player: resolveActor(),