fix: send no analytics, traces, or crash reports off the machine

.env.example

@@ -25,7 +25,3 @@ T3CODE_RELAY_URL=https://relay.t3.codes
 # Defaults to https://app.t3.codes; override to test against a staging deployment.
 # T3CODE_HOSTED_APP_URL=https://nightly.app.t3.codes
 
-# Public, ingest-only mobile OpenTelemetry configuration.
-# T3CODE_MOBILE_OTLP_TRACES_URL=https://api.axiom.co/v1/traces
-# T3CODE_MOBILE_OTLP_TRACES_DATASET=t3-code-mobile-traces-dev
-# T3CODE_MOBILE_OTLP_TRACES_TOKEN=xaat-...

apps/mobile/app.config.ts

@@ -31,11 +31,9 @@ const iosTeamIdOverride = (
 )?.trim();
 const IOS_BUNDLE_IDENTIFIER_PATTERN = /^[A-Za-z0-9-]+(?:\.[A-Za-z0-9-]+)+$/;
 
-// Compiled into the native project. Without a relay, Observe's native side could dispatch to
-// Expo's own ingest before observe.ts turns it off; `.invalid` never resolves (RFC 6761).
-const observeEndpointUrl = repoEnv.T3CODE_RELAY_URL?.trim()
-  ? new URL("/v1/mobile/observe", repoEnv.T3CODE_RELAY_URL.trim()).toString()
-  : "https://observe.invalid";
+// PseudoCode sends no crash reports. Compiled into the native project so Observe can never reach
+// Expo's ingest or the relay; `.invalid` never resolves (RFC 6761).
+const observeEndpointUrl = "https://observe.invalid";
 
 const fromRepoRoot = (relativePath: string) => `../../${relativePath}`;
 const androidAdaptiveForeground = "./assets/android-icon-foreground.png";
@@ -498,7 +496,7 @@ const config: ExpoConfig = {
     EXPO_PUBLIC_CLERK_GOOGLE_ANDROID_CLIENT_ID: repoEnv.EXPO_PUBLIC_CLERK_GOOGLE_ANDROID_CLIENT_ID,
     EXPO_PUBLIC_CLERK_GOOGLE_IOS_URL_SCHEME: repoEnv.EXPO_PUBLIC_CLERK_GOOGLE_IOS_URL_SCHEME,
     observability: {
-      tracesUrl: repoEnv.EXPO_PUBLIC_OTLP_TRACES_URL ?? "https://api.axiom.co/v1/traces",
+      tracesUrl: repoEnv.EXPO_PUBLIC_OTLP_TRACES_URL ?? null,
       tracesDataset: repoEnv.EXPO_PUBLIC_OTLP_TRACES_DATASET ?? null,
       tracesToken: repoEnv.EXPO_PUBLIC_OTLP_TRACES_TOKEN ?? null,
     },

apps/mobile/src/features/diagnostics/SettingsDiagnosticsRouteScreen.tsx

@@ -3,9 +3,8 @@ import { ScreenScrollView as ScrollView } from "../../components/ui/ScreenScroll
 import * as Application from "expo-application";
 import Constants from "expo-constants";
 import * as Updates from "expo-updates";
-import { useAtomSet, useAtomValue } from "@effect/atom-react";
+import { useAtomValue } from "@effect/atom-react";
 import * as Effect from "effect/Effect";
-import * as Exit from "effect/Exit";
 import { AsyncResult, Atom } from "effect/reactivity";
 import { useState } from "react";
 import { View } from "react-native";
@@ -14,12 +13,9 @@ import { useSafeAreaInsets } from "react-native-safe-area-context";
 import { SymbolView } from "../../components/ui/AppSymbol";
 import { AppText as Text } from "../../components/ui/AppText";
 import { tryCopyTextWithHaptic } from "../../lib/copyTextWithHaptic";
-import { mobilePreferencesAtom, updateMobilePreferencesAtom } from "../../state/preferences";
-import { crashReportingAvailable, setCrashReportsEnabled } from "../observability/observe";
 import { ListActionRow as SettingsActionRow } from "../../components/ui/ListActionRow";
 import { SettingsScreen } from "../settings/components/SettingsScreen";
 import { SettingsSection } from "../settings/components/SettingsSection";
-import { SettingsSwitchRow } from "../settings/components/SettingsSwitchRow";
 import {
   formatStartupCrashReport,
   parseStartupCrashRecords,
@@ -90,8 +86,6 @@ export function SettingsDiagnosticsRouteScreen() {
         className="flex-1"
         contentContainerClassName="gap-6 px-5 pt-4 pb-[18px]"
       >
-        {crashReportingAvailable ? <CrashReportsSetting /> : null}
-
         <SettingsSection title="Startup crashes">
           {state.status === "loading" ? (
             <View className="items-center gap-3 px-6 py-8">
@@ -137,54 +131,6 @@ export function SettingsDiagnosticsRouteScreen() {
   );
 }
 
-function CrashReportsSetting() {
-  const preferences = useAtomValue(mobilePreferencesAtom);
-  const savePreferences = useAtomSet(updateMobilePreferencesAtom, { mode: "promiseExit" });
-  // One change at a time, so a slow save never turns sending back on after a later opt-out.
-  const [saving, setSaving] = useState(false);
-  const ready = AsyncResult.isSuccess(preferences) && !preferences.waiting;
-  const enabled = AsyncResult.isSuccess(preferences)
-    ? preferences.value.crashReportsEnabled !== false
-    : true;
-
-  const change = (value: boolean) => {
-    setSaving(true);
-    // Sending stops before the save and starts only after it.
-    if (!value) void setCrashReportsEnabled(false);
-    savePreferences({ crashReportsEnabled: value })
-      .then((exit) => {
-        if (Exit.isFailure(exit)) {
-          console.warn("[diagnostics] could not save the crash report setting", exit.cause);
-          return value ? undefined : setCrashReportsEnabled(true);
-        }
-        return value ? setCrashReportsEnabled(true) : undefined;
-      })
-      .catch((error: unknown) => {
-        console.warn("[diagnostics] could not apply the crash report setting", error);
-      })
-      .finally(() => setSaving(false));
-  };
-
-  return (
-    <View className="gap-3">
-      <SettingsSection title="Crash reports">
-        <SettingsSwitchRow
-          icon="tray.and.arrow.up"
-          label="Send crash reports"
-          disabled={!ready || saving}
-          value={enabled}
-          onValueChange={change}
-        />
-      </SettingsSection>
-      <Text className="px-2 text-sm leading-normal text-foreground-muted">
-        When the app crashes or hits an error, it sends the error message, the stack trace, the app
-        version, and the device model and OS version to the T3 Code team. Each launch also sends
-        startup timings. Reports carry a random ID for this install.
-      </Text>
-    </View>
-  );
-}
-
 function EmptyState(props: {
   readonly icon: "exclamationmark.triangle" | "checkmark.circle";
   readonly title: string;

apps/mobile/src/features/observability/observe.ts

@@ -1,63 +1,5 @@
-import Constants from "expo-constants";
 import { Observe } from "expo-observe";
 
-// Importing expo-observe installs its global JS error handler; reports leave only through the relay.
-const relayUrl: unknown = Constants.expoConfig?.extra?.relay?.url;
-const appVariant: unknown = Constants.expoConfig?.extra?.appVariant;
-
-export const crashReportingAvailable = typeof relayUrl === "string" && relayUrl.trim() !== "";
-
-interface PromiseRejectionTracker {
-  readonly enablePromiseRejectionTracker?: (options: {
-    readonly allRejections: boolean;
-    readonly onUnhandled: (id: number, rejection: unknown) => void;
-  }) => void;
-}
-
-// React Native tracks unhandled rejections only in development, for LogBox; Observe has no hook.
-if (!__DEV__) {
-  const hermes: PromiseRejectionTracker | undefined = Reflect.get(globalThis, "HermesInternal");
-  hermes?.enablePromiseRejectionTracker?.({
-    allRejections: true,
-    onUnhandled: (_id, rejection) => Observe.reportError(rejection),
-  });
-}
-
-let latestConfiguration = 0;
-
-// While sending is off, a dispatch pass drops what it finds, so one runs before turning it back on.
-// Best effort: Observe skips the pass while it is backing off from a failed send.
-export async function setCrashReportsEnabled(enabled: boolean) {
-  const configuration = ++latestConfiguration;
-  const dispatchingEnabled = crashReportingAvailable && enabled;
-  if (dispatchingEnabled) {
-    await Observe.dispatchEvents();
-    if (configuration !== latestConfiguration) return;
-  }
-  Observe.configure({
-    dispatchingEnabled,
-    ...(typeof appVariant === "string" ? { environment: appVariant } : {}),
-  });
-}
-
-if (!crashReportingAvailable) {
-  void setCrashReportsEnabled(false);
-} else {
-  // Observe keeps its last configuration across launches; configuring it off while the setting
-  // loads would drop the last session's native crash. Imported lazily so the persistence graph
-  // never runs ahead of the imports `index.ts` orders first.
-  const changedSinceLoad = () => latestConfiguration !== 0;
-  void import("../../persistence/imperative")
-    .then(({ loadPreferences }) => loadPreferences())
-    .then(
-      (preferences) =>
-        changedSinceLoad()
-          ? undefined
-          : setCrashReportsEnabled(preferences.crashReportsEnabled !== false),
-      // Observe keeps the last choice it was given, which stands in for the unreadable one.
-      (error: unknown) => console.warn("[observe] could not read the crash report setting", error),
-    )
-    .catch((error: unknown) => {
-      console.warn("[observe] could not apply the crash report setting", error);
-    });
-}
+// PseudoCode sends no crash reports. Importing expo-observe installs its global error handler,
+// and Observe keeps its last configuration across launches, so sending is switched off here.
+Observe.configure({ dispatchingEnabled: false });

apps/mobile/src/features/observability/tracing.test.ts

@@ -17,7 +17,7 @@ vi.mock("expo-constants", () => ({
   },
 }));
 
-it.effect("does not let OTLP serialization failures alter application effects", () => {
+it.effect("sends no spans even when a build carries trace credentials", () => {
   const fetchFn = vi.fn<typeof fetch>(async () => new Response(null, { status: 202 }));
   const layerTracing = Tracing.layerFromConfig(
     {
@@ -52,10 +52,7 @@ it.effect("does not let OTLP serialization failures alter application effects",
     Effect.scoped,
     Effect.andThen(
       Effect.sync(() => {
-        expect(fetchFn).toHaveBeenCalledOnce();
-        expect(new TextDecoder().decode(fetchFn.mock.calls[0]?.[1]?.body as Uint8Array)).toContain(
-          "mobile.test.failed-span",
-        );
+        expect(fetchFn).not.toHaveBeenCalled();
       }),
     ),
   );

apps/server/src/config.ts

@@ -23,7 +23,7 @@ import packageJson from "../package.json" with { type: "json" };
 // Official release workflows set this telemetry channel; other builds report dev.
 // Unlike __T3CODE_BUILD_CHANNEL__, this is not the sign-in page's latest/nightly channel.
 declare const __T3CODE_TELEMETRY_CHANNEL__: ReleaseChannel | undefined;
-export const telemetryChannel: ReleaseChannel =
+const telemetryChannel: ReleaseChannel =
   typeof __T3CODE_TELEMETRY_CHANNEL__ === "undefined" ? "dev" : __T3CODE_TELEMETRY_CHANNEL__;
 
 export const DEFAULT_PORT = 3773;