v0.10.0 released - macOS DMG, first-launch folder picker, gamepad-friendly saves

[noctonca]

The cross-platform trio is complete: macOS joins Linux and Windows with a native DMG. First-launch on any graphical session now prompts for the retail game folder if the engine can't find one itself, so new players don't have to know about LBA2_GAME_DIR or --game-dir flags before they can run the game. Gamepad users get one-button saves with sensible auto-generated names. And the first static-analysis pass over the C++ tree caught a handful of latent UB hits that had been there since the original ASM→C++ port.

What's in v0.10.0:

• Native macOS binary — Apple Silicon DMG with drag-to-Applications layout, ad-hoc codesigned. Joins the Linux AppImage and Windows ZIP from v0.9.0; the Linux tarball is also new this release for distros where AppImage FUSE is a hassle.
• First-launch folder picker — when the engine can't auto-discover your retail install in a graphical session, it now opens a native file picker instead of dying with an error. Path persists for next run. Works on all three platforms; headless installs still fall through to the existing error path.
• Gamepad-friendly saving — pressing save on a controller now skips the text-entry screen and writes a scene-aware default name (e.g. Citadel Island - 2026-05-17 14-30-00). The scene portion is localised across the six menu languages; date/time is fixed YYYY-MM-DD HH-MM-SS. D-pad navigation in the save/load list.
• Console give actually grants items — give conch, give gem 5, give money 5000. Run give with no args to list every item name.
• Console slide + distrib — jump straight to any distributor / bumper slide for testing.
• ScaleSprite distance scaling restored — world-space sprites that should shrink as they recede from the camera now do. Most visible in exterior scenes: the magic ball used to fly off into the distance at full size; now it scales with depth like it always should have. A 2024 ASM→CPP port had stripped the scaled-output branches; the regression went unnoticed for months because the test only varied numerator/x/y, not the scale factor.
• UB hardening from new clang-tidy CI — shift-by-32 in the POLYGOUR dither rotate, signed-overflow in I_WEAPON_7 / A_FLIP bit masks, TheEndCheckFile marked noreturn to close ~45 null-deref paths, an uninit-old-position read in GereExtras, and an off-by-one bias in terrain vertex projection.
• lba2.cfg defaults modernised — fullscreen on by default, sensible Version defaults out of the box.
• GOG LBA2.GOG extractor — pull the retail media tree (VIDEO.HQR, .VOX voices, music WAVs) out of the GOG Original Edition image. For Original Edition buyers only; GOG Galaxy / Steam Classic owners already have these under Common/.
• Foundation for widescreen — RESOLUTION_X/RESOLUTION_Y extracted from hardcoded 640/480, cinema bars and sort preclip routed through the runtime resolution. Phase B of docs/WIDESCREEN.md.
• Rolling latest pre-release — every push to main now publishes fresh artifacts for all three platforms under the latest tag. Community testers can grab bleeding-edge builds without cloning.

Release: https://github.com/LBALab/lba2-classic-community/releases/tag/v0.10.0
Full changelog: https://github.com/LBALab/lba2-classic-community/blob/main/CHANGELOG.md
Discord: https://discord.gg/jsTPWYXHsh

Welcoming @b-tuma as a new contributor — gamepad D-pad navigation in the save/load list (#79). Thanks to everyone who's been play-testing on handhelds, filing bug reports, and pushing the platform matrix wider. Next checkpoint is more bug fixing and stabilization; continued work on implementing widescreen support.