The Standard no-login CMS path needs an ORIGINAL ink signature on paper
(CMS-10114: 'Stamped, faxed or copied signatures will not be accepted'). This
adds a pipeline to redraw the provider's own captured strokes in real ink with a
pen on a CR-10 V2 (or any Marlin/GRBL machine) — original, in ink, never copied.
- migration 090: esign_records.signature_vector (JSONB stroke paths, 0..1).
- signing page now captures normalized stroke paths alongside the PNG; API
stores a size-bounded vector for drawn signatures.
- ink_signature_plotter.py (hardware-independent): fit strokes to the signature
anchor box, PDF-pt -> bed-mm via jig offset, emit Marlin/GRBL G-code (Z pen or
M280 servo/BLTouch), SVG toolpath preview, and render_signature_on_pdf (a
digital twin that proves the toolpath lands on the cert line). Gated serial
sender (dry_run default).
- ink_signature_cli.py: end-to-end load-record -> gcode+preview, --test-box jig
calibration, --plot to stream over USB.
- Corrected CMS-10114 signature anchor to sit inside the Section 4A signing cell
(above the bottom rule, below the label).
- docs/ink-signature-plotter.md documents the CR-10 retrofit + interpretive risk.
Tests: test_ink_signature.py 30/30, test_cms10114.py 27/27, test_paper_batch.py
15/15, API tsc clean, Astro build 58 pages.
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