~anthropic/claude-sonnet-latest → A (6:4)

A fixes a severe, user-facing bug: a shared sentinel delegate bound on first vote silently blocked every subsequent human voter, breaking core multi-user functionality; the change is minimal, clearly scoped (Option<String> agent), removes dead sentinel code, and is verified by a concrete two-user vote test. B is also solid—refactoring duplicated feed logic into one function and fixing subtle same-millisecond/clock-rollback ordering plus permission-anchor edge cases—but the bug it fixes is rarer and less catastrophic than A's outright feature-breaking defect.