chore(trail): tailor runner prompts to the CLI repo

The shipped risk/confidence/review-focus runner templates were written for a generic web/backend app (payments, DB migrations, TypeScript). Rewrite them around what actually makes changes risky in this Go CLI:

• risk: destructive git ops, hook handlers, checkpoint/session integrity, transcript egress, blast radius; score bands re-anchored accordingly.
• confidence: Go test coverage, isolation hygiene, mise/golangci gates and the Vogon e2e canary instead of the TypeScript type-safety dimension.
• review-focus: hotspot list realigned to the same CLI risk surface.