fix: restore current-main gate (#59815)

extensions/anthropic/config-defaults.ts

@@ -190,7 +190,7 @@ export function applyAnthropicConfigDefaults(params: {
     );
     if (primary) {
       const parsedPrimary = parseProviderModelRef(primary, "anthropic");
-      if (isAnthropicCacheRetentionTarget(parsedPrimary)) {
+      if (parsedPrimary && isAnthropicCacheRetentionTarget(parsedPrimary)) {
         const key = `${parsedPrimary.provider}/${parsedPrimary.model}`;
         const entry = nextModels[key];
         const current = entry ?? {};

src/config/types.telegram.ts

@@ -158,6 +158,8 @@ export type TelegramAccountConfig = {
    * - "progress": alias that maps to "partial" on Telegram
    */
   streaming?: TelegramStreamingMode;
+  /** Chunking config for Telegram stream previews in `streaming: "block"`. */
+  draftChunk?: BlockStreamingChunkConfig;
   /** Disable block streaming for this account. */
   blockStreaming?: boolean;
   /** Draft block-stream chunking thresholds for Telegram preview edits. */