AIT-437: TikTok channel (connect + publish + comments)

[ord669]

WIP. Adds TikTok as a channel: connect, publish, own-post comments.

Explicitly NOT messaging — TikTok DMs need the DSPR + US data security reviews, tracked on AIT-340.

Refs AIT-437

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 3d717ba5-8709-470d-a56f-0426021465a4

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

_{Comment @coderabbitai help to get the list of available commands.}