Add Noir Gear NOIR E1 support

[williamsnoirgear]

Summary

• Add NOIR E1 as a distinct K-snake/Noir Gear model, including exact-name resolution for its shared PID with M2-NEX.
• Enable E1's supported DPI stages, button remapping, scroll direction, macros, and six local profiles stored separately from M2-NEX.
• Add E1 artwork mapping and the underside DPI-button marker.

The artwork image is not included in this PR, following the repository artwork workflow. I will submit it separately through the device-artwork issue form for maintainer upload.

Verification

• npm run check (build + 259 tests)

[snekxs]

Rebased this onto main with S1 (#452) merged — the two PRs touched the same Noir/K-snake surface (noir.ts, m2nex-profiles, controller, OverviewPage, Dpi/Advanced/Performance cards) and conflicted across 9 files.

Pushed a conflict-resolved branch to resolve/noir-e1-rebase on origin (commit 737be49): unions S1+E1 identity helpers, profile-store options, marker tables, DPI single-view gating for both models. tsc clean, 265/265 tests pass.

Maintainer can't push to the fork branch, so either:

1. git fetch origin resolve/noir-e1-rebase && git checkout -B feat/noir-e1-pr FETCH_HEAD && git push from your fork, or
2. say the word and I'll open a fresh PR from resolve/noir-e1-rebase and close this one.

Also noting: main now has keychron-8k/keychron-1k traits (#514), no interaction with this PR.