Slack: Markdown links render as raw text - must use Slack native links

[Aaronontheweb]

Problem

ArdyBot's Slack messages contain standard markdown links [text](url) which Slack renders as raw text (visible brackets) instead of clickable links.

Findings

Testing revealed:

1. Standard Markdown [text](url) -> FAILS
2. Slack Markdown [text](<url>) -> FAILS
3. Slack Native <url|text> -> WORKS

Fix

The Slack output pipeline must convert all markdown links to Slack native links:

• Input: [Text](https://url)
• Output: <https://url|Text>

This ensures all citations and links are clickable in Slack.