Add 24 comprehensive biochemistry tests covering all 7 EC classes

EC 1 (Oxidoreductases): AlcoholOxidation, Catalase
EC 2 (Transferases): Methyltransferase, AspartateAminotransferase, PhosphorylTransfer
EC 3 (Hydrolases): PeptideBondHydrolysis, TripeptideHydrolysis, LipaseReaction, Asparaginase
EC 4 (Lyases): PyruvateDecarboxylase, Fumarase, AldolCleavage
EC 5 (Isomerases): TriosePhosphateIsomerase, AlanineRacemase
EC 6 (Ligases): GlutamineSynthetase, PeptideBondFormation
EC 7 (Translocases): GlucoseTransporter

Complex/macro: TetrapeptideHydrolysis, ThioesterHydrolysis,
ClaisenCondensation, LactamRingFormation, DisulfideBondFormation,
SchiffBaseFormation, GlycosidicBondFormation

All 30 tests pass (excluding slow RHEA11004 NAD+ cofactor test).
Each test uses chemically balanced, atom-conserving SMILES.

Author: asad