Quill SI kit

Research
- quill-si-competitor-research.pdf — sourced product-by-product research pack
- store/research/complaints.md — what each named product is, sourced against its own page
- store/research/competitor-research.html — same research as HTML

Tests and results
- quill-si-test-results.pdf — gauntlet + unit tests + clicked-through studio, all pass
- store/tests/RESULTS.md — same report in Markdown
- store/tests/gauntlet.log — RAM-capped gauntlet (512 MB heap)
- store/tests/*.tap.txt — raw TAP from 81 unit tests (81 pass, 0 fail)
- store/tests/src/ — copies of the test files
- store/tests/shots/ — screenshots from QA (desktop, phone, publish, how-to, compare)

Store listing
- store/listing, store/android, store/ios, store/fastlane, icons, screenshots, TWA, Capacitor

Open /compare in the app for the live comparison.
