Previously, all pull_request_comment events on Forgejo triggered the
full Claude pipeline unconditionally — both in the workflow if-condition
and in trigger.ts. This wasted CI resources and API credits on reviews
without @claude mentions (e.g. plain "LGTM" reviews).
Workflow: add @claude check via contains() on comment.body and review.body.
Trigger validation: replace blind auto-trigger with payload-aware check
that inspects available body fields, falling back only when no body exists.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
