Capture-to-form signature placement so the customer's drawn or typed
signature lands right on the signature rule of the actual form, not in a
sidecar page.
- migration 085: esign_records.signature_anchors (JSONB exact PDF coords,
lower-left origin, points) + signed_document_minio_key
- signature_stamper.py: signature_box() anchors; anchors_from_acroform()
pulls the signature field /Rect from a real AcroForm (e.g. MCS-150
certifySignature); stamp_signature() overlays PNG (auto-trimmed so ink
rests on the rule) or typed name, scaled to actual page size
- state_trucking_authorization.py: renders the Limited Authorization to
File PDF and returns (pdf_bytes, anchors)
- esign_stamp.py: stamp_esign_document() downloads unsigned PDF, stamps,
uploads _signed.pdf, sets signed_document_minio_key (idempotent)
- dot_esign.py: extract certifySignature anchor for MCS-150/closeout forms
so the federal perjury cert is signed on the line
- state_trucking.py: authorization gate — first run emails signing link
and PAUSES; resumes with client_approved after signing
- job_server handle_esign_completed: stamp then re-dispatch
- tests: test_signature_placement.py (custom form), and
test_mcs150_signature_placement.py (official AcroForm) both assert the
signature lands inside the recorded signature box (verified visually)
