Discovery — Capture What's Interesting

When Joel flags something as interesting, fire it into the pipeline and keep moving.

Gateway auto-capture rule

Gateway already auto-captures Joel-authored Slack links from #brain-joel (C09LKT871PE).

Contract:

• only Joel-authored Slack messages in that one channel
• extract all URLs from message text
• normalize Slack angle links like <https://x|label>
• send one discovery/noted event per unique URL in the message
• defaults: site=joelclaw, visibility=public
• include Slack channel/message context in the event
• fire-and-forget; Slack handling must not block on discovery pipeline failures

So if a future task mentions missing #brain-joel capture, debug the gateway rule first before adding another manual discovery path.