Refine link/embed resolution code

src/components/ComposerV2/store/utils/parseResolveLinkError.ts

@@ -0,0 +1,26 @@
+import {EmbeddingDisabledError} from '#/lib/api/resolve'
+import {type LinkResolutionFailureCode} from '#/components/ComposerV2/store/types'
+
+export type ParsedResolveLinkError = {
+  code: LinkResolutionFailureCode
+  /**
+   * Whether the failure is worth retrying. Today only EmbeddingDisabledError
+   * is permanent (the post's author has forbidden quoting); anything else
+   * is a transient or unknown failure and the caller should attach a
+   * `retry()` to the failed state.
+   */
+  isRetryable: boolean
+}
+
+/**
+ * Classify a thrown error from `resolveLink` into a stable failure code
+ * and a retryability flag. Centralizes the retry-policy decision so the
+ * store doesn't repeat the `code === 'embedding-disabled'` check at every
+ * failure call site.
+ */
+export function parseResolveLinkError(err: unknown): ParsedResolveLinkError {
+  if (err instanceof EmbeddingDisabledError) {
+    return {code: 'embedding-disabled', isRetryable: false}
+  }
+  return {code: 'unknown', isRetryable: true}
+}