feat(resilience): @retry jitter + CB failure-rate window & half-open tuning (v26.06.43)#70
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… & half-open tuning + bump v26.06.43 Completes v26.06.36 toward Resilience4j parity: - @Retry(jitter): randomization fraction +/- jitter*wait on each backoff (anti thundering-herd). - CircuitBreaker(failure_rate_threshold, window_size): open on failure RATE over the last N calls (COUNT_BASED window) vs consecutive failures. - CircuitBreaker(half_open_max_calls): N trial calls in HALF_OPEN; that many successes close, any failure re-opens. Back-compat: consecutive-failure behavior unchanged when new options unset. Tests: tests/resilience/test_resilience_tuning.py (4). Gates: mypy --strict (619), ruff + format, full suite 3829 passed.
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Completes the v26.06.36 resilience decorators toward Resilience4j parity:
@retry(jitter)(randomization fraction ±jitter·wait, anti thundering-herd);CircuitBreaker(failure_rate_threshold, window_size)(open on failure rate over the last N calls — COUNT_BASED window);CircuitBreaker(half_open_max_calls)(N trial successes to close, any failure re-opens). Back-compat: consecutive-failure behavior unchanged when new options unset. Tests (4) + 6 existing green. Gates: mypy --strict (619), ruff+format, full suite 3829.