feat: normalize failures through a stable registry

src/adapters/http/client.js

@@ -1,5 +1,9 @@
 import { systemClock } from "../../application/ports/clock-port.js";
 import { getApiOperation } from "../../contracts/api-operations.js";
+import {
+  createFailure as failure,
+  kindForStatus as statusKind,
+} from "../../contracts/errors.js";
 import { retryDelay, shouldRetry } from "./retry-policy.js";
 import {
   validateEnvelope,
@@ -36,16 +40,6 @@ const noAuthSession =
  * { ok: false, error: HttpFailure }} HttpResult
  */
 
-/**
- * @typedef {{
- *   code?: string,
- *   httpStatus?: number,
- *   requestId?: string,
- *   traceId?: string,
- *   retryAfterMs?: number
- * }} FailureDetails
- */
-
 /**
  * @param {{
  *   baseUrl: string,
@@ -378,52 +372,6 @@ async function recoverSession(authSession, operation, originalFailure) {
  * @param {FailureDetails} [details]
  * @returns {HttpFailure}
  */
-function failure(kind, operationId, attempt, details = {}) {
-  const retryable = new Set([
-    "NETWORK_UNREACHABLE",
-    "REQUEST_TIMEOUT",
-    "RATE_LIMITED",
-    "SERVER_FAILURE",
-  ]).has(kind);
-  const action =
-    kind === "AUTH_REQUIRED"
-      ? "reauth"
-      : retryable
-        ? "retry"
-        : kind === "REQUEST_ABORTED"
-          ? "none"
-          : "contact-support";
-
-  return Object.freeze({
-    kind,
-    code: details.code ?? kind,
-    retryable,
-    operationId,
-    attemptCount: attempt + 1,
-    ...(details.httpStatus === undefined ? {} : { httpStatus: details.httpStatus }),
-    ...(details.requestId ? { requestId: details.requestId } : {}),
-    ...(details.traceId ? { traceId: details.traceId } : {}),
-    ...(details.retryAfterMs === undefined
-      ? {}
-      : { retryAfterMs: details.retryAfterMs }),
-    userMessageKey: `error.${kind.toLowerCase()}`,
-    action,
-  });
-}
-
-/** @param {number} status */
-function statusKind(status) {
-  if (status === 401) return "AUTH_REQUIRED";
-  if (status === 403) return "FORBIDDEN";
-  if (status === 404) return "NOT_FOUND";
-  if (status === 409) return "CONFLICT";
-  if (status === 422) return "VALIDATION_REJECTED";
-  if (status === 429) return "RATE_LIMITED";
-  if (status >= 500) return "SERVER_FAILURE";
-  if (status >= 400) return "UNKNOWN_CLIENT_FAILURE";
-  return "ENVELOPE_MISMATCH";
-}
-
 /** @param {unknown} envelope */
 function safeBackendCode(envelope) {
   if (!envelope || typeof envelope !== "object") return "HTTP_FAILURE";