Digital pen support for handwriting

Digital pen support for laptops and computers with usb drawing tablets (wacom etc) would be a significant workflow enhancement for anyone that needs to quickly save simple sketches, diagrams, or can get away with a quick handwritten note without having to create it in a program like GIMP or Krita and import into simplenote.

The issue describes digital-pen and USB drawing-tablet support but names no files, tests, entry points, platform APIs, or acceptance criteria. Start by mapping the desktop input and note-editing code, then clarify supported devices, drawing behavior, storage, and tests before implementation.

Written by the indexing model from the issue text.