fix(codex): sharing usage limits offer the existing recovery options

apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.test.ts

@@ -478,6 +478,8 @@ describe("CodexAdapterV2 fork boundary", () => {
 });
 
 const DEFAULT_CODEX_SETTINGS = Schema.decodeSync(CodexSettings)({});
+const CHATGPT_SHARING_LIMIT_MESSAGE =
+  "stream disconnected before completion: The ChatGPT user has reached their Subscription Sharing usage limit. Ask the user to try again after their usage limit resets or use an API key instead.";
 const CODEX_TEST_MODEL_SELECTION = {
   instanceId: CodexAdapterV2.CODEX_DEFAULT_INSTANCE_ID,
   model: "gpt-5.4",
@@ -1173,6 +1175,7 @@ describe("CodexAdapterV2 post-settle continuation", () => {
     onRequest: (method: string, params: unknown) => Effect.Effect<void> = () => Effect.void,
     readChildMetadata?: Parameters<typeof withCodexReplayChildMetadata>[2],
     beforeEmitInbound?: CodexReplay.CodexAppServerReplayDriver["beforeEmitInbound"],
+    onUsageLimits?: CodexAdapterV2.CodexAdapterV2Options["onUsageLimits"],
   ) =>
     Effect.gen(function* () {
       const fileSystem = yield* FileSystem.FileSystem;
@@ -1230,6 +1233,7 @@ describe("CodexAdapterV2 post-settle continuation", () => {
         settings: DEFAULT_CODEX_SETTINGS,
         environment: {},
         clientFactory,
+        ...(onUsageLimits ? { onUsageLimits } : {}),
         digest: yield* Digest.Digest,
         fileSystem,
         idAllocator,
@@ -5426,14 +5430,58 @@ describe("CodexAdapterV2 post-settle continuation", () => {
       code: "other",
       details: "subscription_sharing_workplace_individual_usage_limit_exceeded",
       notification: true,
+      usedBefore: 100,
+      expectedClass: "usage_limit",
+      expectedCode: "subscription_sharing_workplace_individual_usage_limit_exceeded",
+      expectedMessage: "workspace admin",
+    },
+    // regression: #25333 ChatGPT sharing limit prose classifies as a usage limit
+    {
+      name: "chatgpt-sharing-prose-retry",
+      code: "responseStreamDisconnected",
+      errorInfo: { responseStreamDisconnected: { httpStatusCode: null } },
+      message: CHATGPT_SHARING_LIMIT_MESSAGE,
+      notification: true,
+      willRetry: true,
+      usedBefore: 100,
+      expectedClass: "usage_limit",
+      expectedCode: "subscription_sharing_usage_limit_exceeded",
+      expectedMessage: "Usage settings",
+    },
+    {
+      name: "chatgpt-sharing-prose",
+      code: "responseStreamDisconnected",
+      errorInfo: { responseStreamDisconnected: { httpStatusCode: null } },
+      message: CHATGPT_SHARING_LIMIT_MESSAGE,
+      notification: false,
+      resetAfter: true,
+      expectedClass: "usage_limit",
+      expectedCode: "subscription_sharing_usage_limit_exceeded",
+      expectedMessage: "Usage settings",
+    },
+    {
+      name: "sharing-code-mention",
+      code: "responseStreamDisconnected",
+      errorInfo: { responseStreamDisconnected: { httpStatusCode: null } },
+      message: "Transport unavailable; this is not subscription_sharing_usage_limit_exceeded.",
+      notification: false,
       expectedClass: "provider_error",
     },
+    {
+      name: "sharing-code-mention-retry",
+      code: "responseStreamDisconnected",
+      errorInfo: { responseStreamDisconnected: { httpStatusCode: null } },
+      message: "Transport unavailable; this is not subscription_sharing_usage_limit_exceeded.",
+      notification: true,
+      willRetry: true,
+      expectedClass: "transport_error",
+    },
   ] as const)("classifies Codex terminal failures from $name evidence", (scenario) =>
     Effect.scoped(
       Effect.gen(function* () {
         const nativeThreadId = `native-limit-${scenario.name}`;
         const nativeTurnId = `turn-limit-${scenario.name}`;
-        const message = "Provider stopped this request.";
+        const message = "message" in scenario ? scenario.message : "Provider stopped this request.";
         const errorInfo = "errorInfo" in scenario ? scenario.errorInfo : scenario.code;
         const resetAt = "2033-05-19T07:20:00.000Z";
         const snapshot = {
@@ -5453,6 +5501,26 @@ describe("CodexAdapterV2 post-settle continuation", () => {
           scenario: `codex-limit-${scenario.name}`,
           entries: [
             ...codexReplayPreamble({ nativeThreadId, nativeTurnId, prompt: "Continue." }),
+            ...("usedBefore" in scenario
+              ? [
+                  {
+                    ...snapshot,
+                    frame: {
+                      method: "account/rateLimits/updated",
+                      params: {
+                        rateLimits: {
+                          limitId: "codex",
+                          primary: {
+                            usedPercent: scenario.usedBefore,
+                            resetsAt: 2000100000,
+                            windowDurationMins: 300,
+                          },
+                        },
+                      },
+                    },
+                  },
+                ]
+              : []),
             ...(scenario.name === "deferred-reset" ? [snapshot] : []),
             ...(scenario.name === "deferred-reset"
               ? [
@@ -5500,7 +5568,7 @@ describe("CodexAdapterV2 post-settle continuation", () => {
                       params: {
                         threadId: nativeThreadId,
                         turnId: nativeTurnId,
-                        willRetry: scenario.name === "retry",
+                        willRetry: scenario.name === "retry" || "willRetry" in scenario,
                         error: {
                           message,
                           codexErrorInfo: errorInfo,
@@ -5537,7 +5605,7 @@ describe("CodexAdapterV2 post-settle continuation", () => {
                 },
               },
             },
-            ...(scenario.name === "late-reset" ? [snapshot] : []),
+            ...(scenario.name === "late-reset" || "resetAfter" in scenario ? [snapshot] : []),
             ...(scenario.name === "deferred-reset"
               ? [
                   {
@@ -5575,12 +5643,19 @@ describe("CodexAdapterV2 post-settle continuation", () => {
           ],
         });
         const resetReceipt = yield* Deferred.make<void>();
-        const harness = yield* makeCodexReplayHarness(transcript, (event) =>
-          event.type === "turn_item.updated" &&
-          event.turnItem.type === "error" &&
-          event.turnItem.failure.resetAt === resetAt
-            ? Deferred.succeed(resetReceipt, undefined)
-            : Effect.void,
+        const snapshotReceipt = yield* Deferred.make<void>();
+        const harness = yield* makeCodexReplayHarness(
+          transcript,
+          (event) =>
+            event.type === "turn_item.updated" &&
+            event.turnItem.type === "error" &&
+            event.turnItem.failure.resetAt === resetAt
+              ? Deferred.succeed(resetReceipt, undefined)
+              : Effect.void,
+          undefined,
+          undefined,
+          undefined,
+          () => Deferred.succeed(snapshotReceipt, undefined),
         );
         yield* harness.runtime.startTurn(
           makeCodexTestTurnInput({
@@ -5600,6 +5675,17 @@ describe("CodexAdapterV2 post-settle continuation", () => {
         if (scenario.name === "deferred-reset") assert.equal(terminal.failure.resetAt, resetAt);
         if (scenario.name === "matching-details")
           assert.equal(terminal.failure.message, "Detailed provider allowance explanation.");
+        if ("resetAfter" in scenario) {
+          yield* Deferred.await(snapshotReceipt);
+          assert.isFalse(
+            harness.events.some(
+              (event) =>
+                event.type === "turn_item.updated" &&
+                event.turnItem.type === "error" &&
+                event.turnItem.failure.resetAt != null,
+            ),
+          );
+        }
         if (scenario.name === "late-reset") {
           yield* Deferred.await(resetReceipt);
           const item = harness.events.find(
@@ -5610,10 +5696,12 @@ describe("CodexAdapterV2 post-settle continuation", () => {
           );
           assert.isDefined(item);
         }
-        if (scenario.name === "retry") assert.equal(terminal.retry?.attempt, 1);
-        if (scenario.name === "chatgpt-workspace-limit") {
-          assert.equal(terminal.failure.code, scenario.details);
-          assert.include(terminal.failure.message, "workspace admin");
+        if (scenario.name === "retry" || "willRetry" in scenario)
+          assert.equal(terminal.retry?.attempt, 1);
+        if ("expectedCode" in scenario && "expectedMessage" in scenario) {
+          assert.equal(terminal.failure.code, scenario.expectedCode);
+          assert.include(terminal.failure.message, scenario.expectedMessage);
+          assert.equal(terminal.failure.resetAt, null);
         }
       }).pipe(
         Effect.provide(

apps/server/src/orchestration-v2/Adapters/CodexAdapterV2.ts

@@ -1108,7 +1108,8 @@ function codexUsageLimitError(
 
 /**
  * ChatGPT sharing reports its own reason inside Codex's generic turn error, so
- * the code it names replaces Codex's, and clients pick a recovery from it.
+ * the code it names replaces Codex's, and clients pick a recovery from it. Its
+ * allowance limits get the usage-limit recovery; other sharing failures keep their class.
  */
 function withCodexManagedFailure(
   failure: OrchestrationV2ProviderFailure,
@@ -1117,7 +1118,22 @@ function withCodexManagedFailure(
   const managed = classifyCodexManagedError(nativeError);
   return managed === undefined
     ? failure
-    : { ...failure, message: managed.message, code: managed.code };
+    : {
+        ...failure,
+        message: managed.message,
+        code: managed.code,
+        ...(managed.usageLimit ? { class: "usage_limit" } : {}),
+      };
+}
+
+function failureResetAt(
+  failure: OrchestrationV2ProviderFailure,
+  snapshot: CodexRateLimitSnapshot | undefined,
+) {
+  // Sharing caps have no reset timestamp in the ordinary Codex allowance snapshot.
+  return classifyCodexManagedError(failure.code)?.usageLimit
+    ? null
+    : codexUsageLimitResetAt(snapshot);
 }
 
 interface ActiveCodexTurnContext {
@@ -4434,8 +4450,9 @@ export const makeCodexAdapterV2 = Effect.fn("makeCodexAdapterV2")(function* (
             const previous = yield* Ref.getAndUpdate(rateLimitSnapshot, (previous) =>
               mergeCodexRateLimits(previous, payload.rateLimits),
             );
-            const resetAt = codexUsageLimitResetAt(yield* Ref.get(rateLimitSnapshot));
+            const snapshot = yield* Ref.get(rateLimitSnapshot);
             for (const item of (yield* Ref.get(limitedTurnItems)).values()) {
+              const resetAt = failureResetAt(item.failure, snapshot);
               if (resetAt === null || item.failure.resetAt != null) continue;
               const updated = {
                 ...item,
@@ -5780,7 +5797,7 @@ export const makeCodexAdapterV2 = Effect.fn("makeCodexAdapterV2")(function* (
                   failure.class === "usage_limit"
                     ? {
                         ...failure,
-                        resetAt: codexUsageLimitResetAt(yield* Ref.get(rateLimitSnapshot)),
+                        resetAt: failureResetAt(failure, yield* Ref.get(rateLimitSnapshot)),
                       }
                     : failure,
                 ...(input.providerRetry === undefined
@@ -5820,7 +5837,7 @@ export const makeCodexAdapterV2 = Effect.fn("makeCodexAdapterV2")(function* (
                     ...event.failure,
                     resetAt:
                       event.failure.resetAt ??
-                      codexUsageLimitResetAt(yield* Ref.get(rateLimitSnapshot)),
+                      failureResetAt(event.failure, yield* Ref.get(rateLimitSnapshot)),
                   },
                 }
               : event;

apps/server/src/provider/CodexManagedErrors.test.ts

@@ -12,6 +12,7 @@ it("maps streamed failures to safe actionable messages and reconnect decisions",
       message:
         "ChatGPT could not validate this connection. Check the selected account and sharing permissions.",
       code: "subscription_sharing_v2_invalid_user",
+      usageLimit: false,
     },
   );
   assert.include(
@@ -58,3 +59,52 @@ it("preserves credentials for the current subscriber and permission error codes"
     assert.strictEqual(classifyCodexManagedError({ error: { code } })?.code, code);
   }
 });
+
+it("treats only ChatGPT sharing allowance limits as usage limits", () => {
+  assert.deepInclude(
+    classifyCodexManagedError(
+      "stream disconnected before completion: The ChatGPT user has reached their Subscription Sharing usage limit. Ask the user to try again after their usage limit resets or use an API key instead.",
+    ),
+    { code: "subscription_sharing_usage_limit_exceeded", usageLimit: true },
+  );
+  assert.isTrue(
+    classifyCodexManagedError("subscription_sharing_workplace_individual_usage_limit_exceeded")!
+      .usageLimit,
+  );
+  assert.isFalse(classifyCodexManagedError("subscription_sharing_usage_unavailable")!.usageLimit);
+  assert.isUndefined(
+    classifyCodexManagedError("stream disconnected before completion: error decoding response"),
+  );
+  assert.isUndefined(classifyCodexManagedError("You've hit your usage limit."));
+});
+
+it("does not infer sharing codes from incidental mentions in turn errors", () => {
+  const mention = "Transport unavailable; this is not subscription_sharing_usage_limit_exceeded.";
+  for (const value of [
+    mention,
+    { message: mention },
+    { message: "Transport unavailable", additionalDetails: mention },
+    { code: "other", message: mention },
+  ]) {
+    assert.isUndefined(classifyCodexManagedError(value));
+  }
+  assert.deepInclude(
+    classifyCodexManagedError({
+      error: { code: "subscription_sharing_usage_unavailable", message: mention },
+    }),
+    { code: "subscription_sharing_usage_unavailable", usageLimit: false },
+  );
+});
+
+it("reads sharing codes from structured errors and exact turn details", () => {
+  const code = "subscription_sharing_usage_limit_exceeded";
+  const response = { error: { code } };
+  for (const value of [
+    response,
+    JSON.stringify(response),
+    { message: "Provider stopped", additionalDetails: code },
+    { message: "Provider stopped", additionalDetails: JSON.stringify(response) },
+  ]) {
+    assert.deepInclude(classifyCodexManagedError(value), { code, usageLimit: true });
+  }
+});