remove redundant alt client tag

src/components/PostEditor/PostTextarea/Preview.tsx

@@ -2,7 +2,6 @@ import ClientTag from '@/components/ClientTag'
 import { Card } from '@/components/ui/card'
 import { ExtendedKind, POLL_TYPE } from '@/constants'
 import {
-  buildAltTag,
   buildClientTag,
   stripImwaldAttributionTags,
   transformCustomEmojisInContent
@@ -164,7 +163,7 @@ export default function Preview({
     }
     const stripped = stripImwaldAttributionTags(tags)
     if (addClientTag) {
-      stripped.push(buildClientTag(), buildAltTag())
+      stripped.push(buildClientTag())
     }
     return stripped
   }, [emojiTags, highlightTags, pollTags, mediaImetaTags, articleMetadata, kind, extraPreviewTags, addClientTag])

src/lib/draft-event.ts

@@ -1405,12 +1405,8 @@ export function buildClientTag(handlerPubkey?: string, handlerIdentifier?: strin
   return ['client', 'imwald']
 }
 
-/** Canonical `alt` we attach for Imwald / jumble.imwald.eu publishing attribution (NIP-31). */
-export const IMWALD_ATTRIBUTION_ALT_TEXT = 'This event was published by https://jumble.imwald.eu.'
-
-export function buildAltTag(): string[] {
-  return ['alt', IMWALD_ATTRIBUTION_ALT_TEXT]
-}
+/** Canonical `alt` text used in legacy Jumble/Imwald attribution tags (kept for stripping old events). */
+const IMWALD_ATTRIBUTION_ALT_TEXT = 'This event was published by https://jumble.imwald.eu.'
 
 /**
  * True for `alt` tags that are *our* app attribution (current or legacy Jumble/Imwald wording).
@@ -1445,7 +1441,7 @@ export function stripImwaldAttributionTags(tags: string[][]): string[][] {
 
 /**
  * Before sign/publish: strip all `client` tags and Imwald/Jumble attribution `alt` tags, then
- * append exactly one {@link buildClientTag} + {@link buildAltTag} when `addClientTag !== false`.
+ * append exactly one {@link buildClientTag} when `addClientTag !== false`.
  */
 export function applyImwaldAttributionTags(
   draftEvent: TDraftEvent,
@@ -1456,7 +1452,7 @@ export function applyImwaldAttributionTags(
   const sanitizedTags = stripImwaldAttributionTags(existingTags)
   const shouldAdd = options?.addClientTag !== false
   if (shouldAdd) {
-    draft.tags = [...sanitizedTags, buildClientTag(), buildAltTag()]
+    draft.tags = [...sanitizedTags, buildClientTag()]
   } else {
     draft.tags = [...sanitizedTags]
   }