Add test asset support with STRIP_ALL guards

Fixes test_assets.cc compilation by adding missing test asset IDs and
procedural generators. Test-specific code is protected with DEMO_STRIP_ALL
to exclude from release builds.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/util/asset_manager.cc b/src/util/asset_manager.cc
index 5067ebe..274f0f9 100644
--- a/src/util/asset_manager.cc
+++ b/src/util/asset_manager.cc
@@ -28,6 +28,10 @@ static const ProcGenEntry kAssetManagerProcGenFuncs[] = {
     {"gen_perlin", procedural::gen_perlin},
     {"gen_grid", procedural::gen_grid},
     {"make_periodic", procedural::make_periodic},
+#if !defined(DEMO_STRIP_ALL)
+    {"gen_noise_256", procedural::gen_noise_256},
+    {"gen_fail", procedural::gen_fail},
+#endif
 };
 static const size_t kNumProcGenFuncs =
     sizeof(kAssetManagerProcGenFuncs) / sizeof(kAssetManagerProcGenFuncs[0]);