Constant V5_KERNEL_LUT_SYNTH 

pub const V5_KERNEL_LUT_SYNTH: f64 = 358_614.0;

Kernel CLB LUTs of build v5 after synthesis (not routed): slices-4, T-tables in AES rounds 3–8 (DSIG_TABLE_MASK=0x1f8), Ed25519 inside.

For build v3, synthesis (301,465) and routing (296,868) agreed within 2 %.