Squashed 'deps/nostalgia/' changes from 5e90f8d4..3b874c6e

3b874c6e [turbine] Fix refresh logic to handle default refresh within value
6cf7bf96 [ox/std] Hopefully fix MSVC build
e34df255 [nostalgia] Update developer-handbook non-error return
7eab2f92 [studio/modlib] Comment out logging in configio
3824788a [ox/std] Add non-const operator[] to Pair
1eac7e1e [ox/std] Add Pair
8798d2d7 [nostalgia/core] Fix getTileIdx(TileSheet, SubSheetId)
f82db690 [nostalgia/core] Make load TileSheet functions take CompactTileSheet, in addition to FileAddresses
0dfa7c30 [studio/modlib] Make TaskRunner check that task is not null
2afade24 Merge commit 'fc2dec64389824a251fb258f6fd0a9074e521cc2'
3635702e [nostalgia] Cleanup config IO
6cbafc75 [nostalgia,keel] Make repair return ox::Error
0d7b89a0 [turbine] Add TimeMs alias to uint64_t
e8f5c911 [studio/applib] Change updateHandler to 10 second interval
3cb3bc12 [nostalgia/core] Add valid and repair functions for PaletteV3
a2cec10c [keel] Add valid and repair functions for AssetManager

git-subtree-dir: deps/nostalgia
git-subtree-split: 3b874c6e6aa0b80783fc9d712c31bc837326337c

src/olympic/keel/include/keel/assetmanager.hpp

@@ -21,6 +21,17 @@ class AssetManager;
 template<typename T>
 class AssetRef;
 
+
+[[nodiscard]]
+constexpr bool valid(auto const&) noexcept {
+	return true;
+}
+
+[[nodiscard]]
+constexpr ox::Error repair(auto const&) noexcept {
+	return {};
+}
+
 #ifndef OX_BARE_METAL
 template<typename T>
 class AssetContainer {
@@ -215,6 +226,9 @@ class AssetManager {
 				ox::Result<AssetRef<T>> loadAsset(ox::StringView const assetId) noexcept {
 					auto &p = m_cache[assetId];
 					oxRequireM(obj, m_loader(assetId));
+					if (!valid(obj) && repair(obj)) {
+						return OxError(1, "asset is invalid state and could not be repaired");
+					}
 					if (!p) {
 						p = ox::make_unique<AssetContainer<T>>(std::move(obj));
 					} else {