debugging

1. EXPLAIN query in sqlite3
2. EXPLAIN query in tursodb
3. Compare bytecode
   ├─ Different → bug in code generation
   └─ Same but results differ → bug in VM or storage layer

# SQLite
sqlite3 :memory: "EXPLAIN SELECT 1 + 1;"
 
# Turso
cargo run --bin tursodb :memory: "EXPLAIN SELECT 1 + 1;"

cargo run --bin tursodb :memory: 'SELECT * FROM foo;'
cargo run --bin tursodb :memory: 'EXPLAIN SELECT * FROM foo;'

# Trace core during tests
RUST_LOG=none,turso_core=trace make test
 
# Output goes to testing/test.log
# Warning: can be megabytes per test run

rustup toolchain install nightly
rustup override set nightly
cargo run -Zbuild-std --target x86_64-unknown-linux-gnu \
  -p turso_stress -- --vfs syscall --nr-threads 4 --nr-iterations 1000

# Simulator
RUST_LOG=limbo_sim=debug cargo run --bin limbo_sim -- -s <seed>
 
# Whopper (concurrent DST)
SEED=1234 ./testing/concurrent-simulator/bin/run