feat(3-2): add recovery tests and story file for automatic recovery on fresh decode

Two-cycle stale→recovery tests confirm that a non-empty fetch after timeout or
empty-list correctly resets is_stale=False; no changes to main.py or aircraft.py
required as recovery logic was already correct from story 3-1.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

_bmad-output/implementation-artifacts/sprint-status.yaml

@@ -35,7 +35,7 @@
 # - Dev moves story to 'review', then runs code-review (fresh context, different LLM recommended)
 
 generated: 2026-04-22
-last_updated: 2026-04-22  # 2-1 done, 2-2 done, 2-3 done, 2-4 done, 2-5 done, 2-6 done, 2-7 done, epic-2 done, epic-3 in-progress, 3-1 done
+last_updated: 2026-04-22  # 2-1 done, 2-2 done, 2-3 done, 2-4 done, 2-5 done, 2-6 done, 2-7 done, epic-2 done, epic-3 in-progress, 3-1 done, 3-2 review
 project: planeMapper
 project_key: NOKEY
 tracking_system: file-system
@@ -65,7 +65,7 @@ development_status:
   # Epic 3: Stale Data Resilience
   epic-3: in-progress
   3-1-stale-state-detection-and-dimmed-display: done
-  3-2-automatic-recovery-on-fresh-decode: backlog
+  3-2-automatic-recovery-on-fresh-decode: review
   epic-3-retrospective: optional
 
   # Epic 4: Reset & Reconfiguration