[ATLKR]

Scope

This is a separate, stacked follow-up to #1. Retarget to main after #1 is verified and merged; do not merge this into the HWPX branch.

• Adapt HOP PR golbin/hop#101, by FMsongX2 at f9bbe8dc66172a1959af1e388e6c28a5b597c5a6, to stop unmodified printable p/P from being swallowed by a global shortcut. Keeps Ctrl/Cmd+P and function keys. Addresses the reports in 대소문자 상관없이 영문 P가 안 써짐. golbin/hop#95 and #100 downstream, without claiming upstream acceptance.
• Add an opt-in toolbar-label visibility preference for 라벨 끄기 기능 추가 요청 golbin/hop#97. Default labels remain visible; icon buttons retain accessible names; the preference persists locally without changing the document.
• Apply these fixes to BOTH the source-built browser frontend and the Windows application, not only a development probe.
• Preserve all original HWPX/native/browser tests and add two E2E scenarios per environment: 16 on each Windows image and 10 on each browser (62 UI executions total), plus MSIX installation/associations/uninstall. Every required gate blocks release on failure or skipped tests.
• Retain original MIT notices and ship explicit backport attribution in THIRD_PARTY_NOTICES.md. No font binaries or private documents are added.

Evidence and boundaries

• Earlier isolated production-source probe 37390568484 at 47979e7 passed Chromium, Firefox and WebKit, 10 scenarios per browser, plus the keyboard/preference unit tests. This is not proof of the final Windows package.
• Four new build-integration regression tests were observed failing before integration; all 55 local Python tests now pass. YAML/shell syntax and diff checks passed.
• The final candidate builds and all 62 UI gates still need to run. This remains a draft until that evidence is green.
• docs/UPSTREAM_TRIAGE.md records other reports that still need reproduction; this PR does not claim to fix table clipping, printing fidelity, encrypted documents or ARM64 packaging.

[gitnotebooks]

Review these changes at https://app.gitnotebooks.com/ATLKR/OpenGeul/pull/2