Sync master with upstream (2026-09-09)

[pathanin]

Sync master with PathOfBuildingCommunity/PathOfBuilding-SimpleGraphic.

Merged from upstream

• 61b81d7 Merge PR Add Gzip support to Inflate/Deflate PathOfBuildingCommunity/PathOfBuilding-SimpleGraphic#117 from vaisest/gzip — adds Gzip support to Inflate/Deflate, touches ui_api.cpp only (9 ins / 3 del).

Clean merge, no conflicts.

macOS port

Nothing needed forward-porting. Upstream's single file has no overlap with any fork-only patch.

Verification

• P4 global assertion: git diff --name-only <pre> HEAD lists only ui_api.cpp. No fork-only file appears.
• P4 per-commit signatures: all 14 fork-only non-merge commits verified present — LuaJIT vcpkg port fixes (configure, pob-wide-crt.patch for both 2025-07-24_1 and 2026-07-20_1), cmake/FindLuaJIT.cmake, CMakeLists.txt platform sources, base64.h/.c, common.cpp, r_texture.cpp, r_main.cpp sleep_for, ANGLE Metal backend (sys_video.cpp + vcpkg.json), Cmd→CTRL, find_c directory-entry fix, macos-launcher/pob_launch.c.
• File modes preserved: all three vcpkg-ports/ports/luajit/*/configure still 100755.
• One stale signature, benign: two README lines from 15160c0 are absent because the later fork commit ba877ae deliberately corrected them (launcher output path). Nothing restored.
• P5: upstream added no versioned port directory this run. Live port remains 2026-07-20_1, which carries the fork's patches (vcpkg-ports/versions/l-/luajit.json → $/ports/luajit/2026-07-20_1).
• Submodule pins: merge touched none. libs/luautf8 @ 1bb70d45 re-verified reachable from origin/master at starwing/luautf8.

Not covered by CI

Windows build_dll cannot validate the macOS-only fixes — the _lua_getenvcopy/_lua_getenvfree macros live in the non-Windows branch of pob-wide-crt.patch, and INSTALL_TSYMNAME plus the configure exec bit are osx-triplet-only. The macOS rebuild + runtime smoke test is the real gate and is run separately.