feat(telegram): auto-rename DM topics on first message (#51502)

* feat(telegram): auto-rename DM topics on first message

fix(telegram): use bot.api for topic rename to avoid SecretRef resolution

* fix(telegram): address security + test review feedback

- Fix test assertion: DEFAULT_PROMPT_SUBSTRING matches 'very short'
- Use RawBody instead of Body (no envelope metadata to LLM)
- Truncate user message to 500 chars for LLM prompt
- Remove user-derived content from verbose logs
- Remove redundant threadSpec.id null check
- Fix AutoTopicLabelParams type to match generateTopicLabel

* fix(telegram): use effective dm auto-topic config

* fix(telegram): detect direct auto-topic overrides

* fix: auto-rename Telegram DM topics on first message (#51502) (thanks @Lukavyi)

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Co-authored-by: Ayaan Zaidi <hi@obviy.us>

src/plugin-sdk/reply-runtime.ts

@@ -47,3 +47,8 @@ export type {
 export { createReplyReferencePlanner } from "../auto-reply/reply/reply-reference.js";
 export type { GetReplyOptions, ReplyPayload } from "../auto-reply/types.js";
 export type { FinalizedMsgContext, MsgContext } from "../auto-reply/templating.js";
+export {
+  resolveAutoTopicLabelConfig,
+  generateTopicLabel,
+} from "../auto-reply/reply/auto-topic-label.js";
+export type { AutoTopicLabelParams } from "../auto-reply/reply/auto-topic-label.js";