* feat(feishu): extract embedded video/media from post (rich text) messages
Previously, parsePostContent() only extracted embedded images (img tags)
from rich text posts, ignoring embedded video/audio (media tags). Users
sending post messages with embedded videos would not have the media
downloaded or forwarded to the agent.
Changes:
- Extend parsePostContent() to also collect media tags with file_key
- Return new mediaKeys array alongside existing imageKeys
- Update resolveFeishuMediaList() to download embedded media files
from post messages using the messageResource API
- Add appropriate logging for embedded media discovery and download
* Feishu: keep embedded post media payloads type-safe
* Feishu: format post parser after media tag extraction
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Co-authored-by: laopuhuluwa <laopuhuluwa@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>