Problem

When a bot is @mentioned in a Feishu group containing an old-format interactive card message (e.g. alert/monitoring cards from external systems), the bot receives [Interactive Card] instead of the actual card content.

Background

Feishu has two distinct interactive card formats:

• Old-format cards (external systems, legacy): full card JSON is embedded in the message body — readable via im.message.get
• Cardkit cards (using Cardkit API): only a card_id reference is stored — content is not accessible via any public API (see feat(feishu): bot cannot read Cardkit-based interactive card content via im.message.get #32930)

This issue covers old-format cards only.

Root Cause

parseInteractiveCardContent() in extensions/feishu/src/send.ts only extracted text from two element tags (div, markdown). Old-format alert cards use a rich-text content field (array-of-arrays) with tags like text, a, at, code_block, and schema 1.0/2.0 cards use additional container tags like column_set, header, note, plain_text, lark_md — none of which were handled.

Fix

See PR #32024.