[AZ-424] [AZ-425] [AZ-426] Implement negatives set (FT-N-01/03/04)

Adds three pure-logic evaluators + scenarios + unit tests covering the
project's failure-mode robustness ladder (AC-3.1, AC-3.4, AC-3.5,
AC-NEW-8):

* outlier_tolerance_evaluator (AZ-424 / FT-N-01): per-event 50 m drift
  bound + 3-frame covariance-monotonic window over the AZ-408 outlier
  injector's medium-density manifest.
* outage_request_evaluator (AZ-425 / FT-N-03): detects 3+ consecutive
  missing-frame windows; validates OPERATOR_RELOC_REQUEST STATUSTEXT
  arrives at 2 s ±500 ms, dead_reckoned label during outage, and no
  FC EKF divergence.
* blackout_spoof_evaluator (AZ-426 / FT-N-04): eight-AC ladder across
  the 5 s / 15 s / 35 s sub-windows — switch latency, spoof rejection,
  monotonic covariance, honest horiz_accuracy, STATUSTEXT 1-2 Hz,
  35 s escalation thresholds, and recovery gate.

Each scenario is skip-gated on the AZ-441 / AZ-407 / AZ-416 replay /
SITL / mavproxy helpers; unit tests (14 + 18 + 29 = 61) cover the
AC logic today. Full e2e unit-test suite: 527 passed (+67).

Co-authored-by: Cursor <cursoragent@cursor.com>

_docs/_autodev_state.md

@@ -12,8 +12,10 @@ sub_step:
 retry_count: 0
 cycle: 1
 tracker: jira
-last_completed_batch: 72
+last_completed_batch: 73
 last_cumulative_review: batches_70-72
+current_batch: 74
+current_batch_tasks: ""
 last_step_outcomes:
   step_8: "Code is testable — no changes needed (testability_assessment.md committed; no list-of-changes, no source edits)"
   step_9: "Already complete — 41 blackbox test tasks (AZ-406..AZ-446) under epic AZ-262 with specs in _docs/02_tasks/todo/ were produced in a prior cycle; AZ-406 test-infrastructure bootstrap also pre-existing. Folder fallback satisfied (todo/ has test tasks, _dependencies_table.md reflects 114 product + 41 test = 155 total). No Step-9 work executed in cycle 1."