qa: fresh-checkout build PASS (0.1.0 release check) (#17)

Merged PR #17: fresh-checkout build PASS

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

TODO.md

@@ -113,7 +113,7 @@ The MPFB character asset is planned as the NPC template (see `ROADMAP.md`). Keep
 - [x] No blocking collision or packaging defects. **Done 2026-11-08:** extended `-qaselftest` — transect now 1456 samples / 16 rows including the kerb/road/sidewalk seam Ys (0 holes), plus a ground-referenced 30 m wall probe (0/35 blocking hits; no invisible walls). Walk/reset/pause all PASS on the packaged build; `GigLineShotActor` now skips under `-qaselftest`. Evidence in `Docs/release-checks.md` §`0.1.0` audit note.
 - [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`.
-- [ ] Fresh project checkout builds with the documented external engine installation.
+- [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.
 - [ ] Tag `v0.1.0` and write `CHANGELOG.md` entry; then remove this section.