qa: package + document controls (0.1.0 release check PASS) (#18)

Merged PR #18: package + document controls

Co-authored-by: Zwitschi <zwitschi82@gmail.com>

TODO.md

@@ -114,7 +114,7 @@ The MPFB character asset is planned as the NPC template (see `ROADMAP.md`). Keep
 - [x] Remove TEMP QA diagnostics (`GigLine SIM` / `GigLine GROUND` log lines and the settle-timer log) from `GigLineCharacter.cpp` before the release tag, or gate them behind a cvar. **Done 2026-11-08:** SIM/GROUND probes were already removed in the input fix (PR #8); the remaining settle-timer + `GigLine IN:` input-setup logs are now gated behind the `gigline.SetupLogs` cvar (default 0 in `DefaultEngine.ini [ConsoleVariables]`, re-enable at runtime). Verified on the packaged build: 0 setup-log lines, `-qaselftest` still all PASS.
 - [x] 60 FPS at 1440p on the dev workstation (Bazzite, Ryzen 7 7700X, 64 GB RAM, RTX 5070 Ti 16 GB) using a documented quality preset; record upscaling state; report performance without frame generation. **Measured 2026-11-08:** Epic preset, TSR on, VSync off, no frame gen — **2.42 ms avg (414 fps), p99 3.01 ms** at 2560×1440 over the fixed `-qaselftest` walk route; frame-time series in `Docs/perf/0.1.0-walk-frametimes.csv`, record in `Docs/release-checks.md`.
 - [x] Fresh project checkout builds with the documented external engine installation. **Verified 2026-11-08:** clean clone of `main` (`4bc41e9`) + `git lfs pull` (`check-lfs.sh` OK, 130 files); `GigLineEditor` (28.2 s) and `GigLine` (26.9 s) both `Result: Succeeded` with the documented engine path. Record in `Docs/release-checks.md`.
-- [ ] Package Linux build with documented controls.
+- [x] Package Linux build with documented controls. **Verified 2026-11-08:** packaged Development build (`EXIT=0`) launches straight into `/Game/Hollywood/DemoMap`, no missing-asset/linker errors. Controls documented in `Docs/controls.md` and drawn in-game bottom-right by `AGigLineHUD` ("WASD move · Mouse look · Space jump · R reset · Esc pause"); evidence screenshot `Docs/perf/0.1.0-packaged-hud-controls.png`.
 - [ ] Tag `v0.1.0` and write `CHANGELOG.md` entry; then remove this section.
 
 ### Documentation