Fix PoE1 3.29 updater and macOS display scaling

[ocombe]

Summary

• bump the bundled PoE1 submodule/version from v2.63.0 to v2.66.2 so new packaged apps include runtime/lua/sha2.lua
• allow upstream runtime/lua/*.lua files through the macOS update manifest as a normal updater-managed pseudo part under App Support src/lua
• prepend App Support src/lua to LUA_PATH while keeping bundled Resources/lua as the fallback
• run the macOS bundle without the Retina/DPI_AWARE renderer path to avoid the external-display startup bug where PoB renders into the lower-left quadrant until the window is dragged across monitors
• update the macOS port docs for both runtime Lua updates and the DPI workaround

Fixes #2.

Validation

• luajit syntax check for macos/mac_entry.lua
• Lua harness verifies the manifest filter rewrites lua/sha2.lua to runtime_lua and drops non-Lua runtime files / Windows binaries
• git diff --check
• cmake -B build -DCMAKE_BUILD_TYPE=Release
• cmake --build build
• cmake --install build --prefix , verified Resources/lua/sha2.lua and CFBundleShortVersionString=2.66.2
• macos/sign.sh /Path\ of\ Building.app
• codesign --verify --deep --strict --verbose=2 /Path\ of\ Building.app
• installed locally to /Applications/Path of Building.app, verified codesign, CFBundleShortVersionString=2.66.2, NSHighResolutionCapable=false
• fresh launch from saved external-monitor position renders full-window instead of lower-left quadrant