Removes src/v1/ (37 files) and container/agent-runner/src/v1/ (3 files) along with the v1 reference note in CLAUDE.md and the now-obsolete tsconfig exclude. v1 was already out of the runtime path; this just removes the dead weight. ~8,800 LOC removed, zero runtime change. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>