v2.0.0 - budget guardrail RETIRED (MAJOR) + journal hardening
BREAKING: the advisory budget guardrail is removed - BudgetTracker and the budgets config group are gone (the feature never fired in practice; a false promise removed rather than kept as decoration). The recovery core (journal + warm-resume) is untouched and remains the product.
Also hardens the handoff journal: 5 data-loss holes closed + atomic writes.
Back-dated Release for an already-published tag - full detail in CHANGELOG [2.0.0].