feat(cli|docs): plugin:build command, ADR catalog, Jint ES compat reference - feat(cli): drift plugin:build artisan command (tsc + esbuild, tsconfig scaffold) - docs(docs): ADR catalog — six architecture decision records (ADR-001..006) - docs(docs): Jint ES compatibility reference table in JS engine guide Tasks completed: TS-COMPILE-STEP, JINT-ES-COMPAT-DOCS, ARCH-DECISION-RECORDS, ADR-MARKDOWN-CATALOG (Epics 55.5, 61)