Stress test phase T7b (~4 days). Crash injection stress testing using cppsuite.
Test coverage:
- Random crash injection at arbitrary points during concurrent bulk insert + checkpoint
- Restart after crash and verify: no corruption, only durable data visible
- Repeat crash-restart cycle many times to cover different crash windows
- Verify WAL/checkpoint interaction: data flushed before checkpoint must survive; unflushed data may be lost but must not corrupt
Depends on: WT-17215 (T4)
Can run in parallel with: T7a (WT-17218), T7c (WT-17220)