Extends E (#317) generic webhook trigger with provider-specific trigger source primitives per SURFACE §1 harness example on(slack.mention('#exec')). Each provider from N codegen gets a trigger namespace: slack.mention, slack.reaction, github.pull_request, github.issue_comment, linear.issue_created, etc. Codegen from relayfile-adapter manifest's webhooks: section. Trigger inbox routing per E.
Extends E (#317) generic webhook trigger with provider-specific trigger source primitives per SURFACE §1 harness example
on(slack.mention('#exec')). Each provider from N codegen gets a trigger namespace: slack.mention, slack.reaction, github.pull_request, github.issue_comment, linear.issue_created, etc. Codegen from relayfile-adapter manifest's webhooks: section. Trigger inbox routing per E.