Switch to VectorEngine gpt-image-2 and edits

Replace uses of the legacy `gpt-image-2-all` model with `gpt-image-2` and standardize image workflows: no-reference generation uses POST /v1/images/generations, any-reference flows use POST /v1/images/edits with multipart `image` parts. Update SKILLs, generation scripts, decision logs, and docs to reflect the contract change and edits-vs-generations guidance. Apply corresponding changes across backend (api-server match3d/puzzle modules, openai image adapter, mappers, telemetry, spacetime client/module), frontend components and services (Match3D, Puzzle, CreativeImageInputPanel, runtime shells), and add new spritesheet/parser files and tests. Also add media/logo.png. These changes align repository code and documentation with the VectorEngine image API contract and update generation/upload handling (green-screen -> alpha processing, spritesheet handling, and related tests).

src/services/match3dGeneratedModelCache.ts

@@ -129,11 +129,19 @@ export function getMatch3DGeneratedRuntimeUiAssetSources(
       [
         backgroundAsset?.imageObjectKey,
         backgroundAsset?.imageSrc,
+        backgroundAsset?.uiSpritesheetImageObjectKey,
+        backgroundAsset?.uiSpritesheetImageSrc,
+        backgroundAsset?.itemSpritesheetImageObjectKey,
+        backgroundAsset?.itemSpritesheetImageSrc,
         backgroundAsset?.containerImageObjectKey,
         backgroundAsset?.containerImageSrc,
         ...assets.flatMap((asset) => [
           asset.backgroundAsset?.imageObjectKey,
           asset.backgroundAsset?.imageSrc,
+          asset.backgroundAsset?.uiSpritesheetImageObjectKey,
+          asset.backgroundAsset?.uiSpritesheetImageSrc,
+          asset.backgroundAsset?.itemSpritesheetImageObjectKey,
+          asset.backgroundAsset?.itemSpritesheetImageSrc,
           asset.backgroundAsset?.containerImageObjectKey,
           asset.backgroundAsset?.containerImageSrc,
         ]),