Adds docs/methodology.md — the prose deliverable that ties the
vk-gramatvediba workspace together for the AI regulatory sandbox.
Describes the two-pass transcription pipeline (mechanical transcoder ->
curated refinement), the concrete delta between the transcoder skeletons
and the curated FG3-4/FG3-5 executables (gateways, DMN extraction, link
reconciliation, resource/metadata authoring), the final validation pass
(all .bpmn/.dmn well-formed, all 3 L4 packages pass uapf-cli, transcoder
samples byte-deterministic), and the implications and limitations for the
sandbox. Workspace now closes the 8-step build plan: skeleton, six FG L2
stubs, FG3 L2 + six FG3-x sub-process stubs, FG3-1/FG3-4/FG3-5 executables,
register-to-BPMN transcoder, methodology note.
