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).

server-rs/crates/shared-contracts/src/match3d_agent.rs

@@ -110,10 +110,28 @@ pub struct Match3DResultDraftResponse {
 pub struct Match3DGeneratedBackgroundAssetResponse {
     pub prompt: String,
     #[serde(default)]
+    pub level_scene_prompt: Option<String>,
+    #[serde(default)]
+    pub level_scene_image_src: Option<String>,
+    #[serde(default)]
+    pub level_scene_image_object_key: Option<String>,
+    #[serde(default)]
     pub image_src: Option<String>,
     #[serde(default)]
     pub image_object_key: Option<String>,
     #[serde(default)]
+    pub ui_spritesheet_prompt: Option<String>,
+    #[serde(default)]
+    pub ui_spritesheet_image_src: Option<String>,
+    #[serde(default)]
+    pub ui_spritesheet_image_object_key: Option<String>,
+    #[serde(default)]
+    pub item_spritesheet_prompt: Option<String>,
+    #[serde(default)]
+    pub item_spritesheet_image_src: Option<String>,
+    #[serde(default)]
+    pub item_spritesheet_image_object_key: Option<String>,
+    #[serde(default)]
     pub container_prompt: Option<String>,
     #[serde(default)]
     pub container_image_src: Option<String>,

server-rs/crates/shared-contracts/src/match3d_works.rs

@@ -170,10 +170,28 @@ pub struct Match3DWorkSummaryResponse {
 pub struct Match3DGeneratedBackgroundAssetResponse {
     pub prompt: String,
     #[serde(default)]
+    pub level_scene_prompt: Option<String>,
+    #[serde(default)]
+    pub level_scene_image_src: Option<String>,
+    #[serde(default)]
+    pub level_scene_image_object_key: Option<String>,
+    #[serde(default)]
     pub image_src: Option<String>,
     #[serde(default)]
     pub image_object_key: Option<String>,
     #[serde(default)]
+    pub ui_spritesheet_prompt: Option<String>,
+    #[serde(default)]
+    pub ui_spritesheet_image_src: Option<String>,
+    #[serde(default)]
+    pub ui_spritesheet_image_object_key: Option<String>,
+    #[serde(default)]
+    pub item_spritesheet_prompt: Option<String>,
+    #[serde(default)]
+    pub item_spritesheet_image_src: Option<String>,
+    #[serde(default)]
+    pub item_spritesheet_image_object_key: Option<String>,
+    #[serde(default)]
     pub container_prompt: Option<String>,
     #[serde(default)]
     pub container_image_src: Option<String>,

server-rs/crates/shared-contracts/src/puzzle_agent.rs

@@ -174,6 +174,18 @@ pub struct PuzzleDraftLevelResponse {
     #[serde(default)]
     pub ui_background_image_object_key: Option<String>,
     #[serde(default)]
+    pub level_scene_image_src: Option<String>,
+    #[serde(default)]
+    pub level_scene_image_object_key: Option<String>,
+    #[serde(default)]
+    pub ui_spritesheet_image_src: Option<String>,
+    #[serde(default)]
+    pub ui_spritesheet_image_object_key: Option<String>,
+    #[serde(default)]
+    pub level_background_image_src: Option<String>,
+    #[serde(default)]
+    pub level_background_image_object_key: Option<String>,
+    #[serde(default)]
     pub background_music: Option<CreationAudioAsset>,
     pub candidates: Vec<PuzzleGeneratedImageCandidateResponse>,
     #[serde(default)]

server-rs/crates/shared-contracts/src/puzzle_runtime.rs

@@ -122,6 +122,14 @@ pub struct PuzzleRuntimeLevelSnapshotResponse {
     #[serde(default)]
     pub ui_background_image_object_key: Option<String>,
     #[serde(default)]
+    pub level_background_image_src: Option<String>,
+    #[serde(default)]
+    pub level_background_image_object_key: Option<String>,
+    #[serde(default)]
+    pub ui_spritesheet_image_src: Option<String>,
+    #[serde(default)]
+    pub ui_spritesheet_image_object_key: Option<String>,
+    #[serde(default)]
     pub background_music: Option<CreationAudioAsset>,
     pub board: PuzzleBoardSnapshotResponse,
     pub status: String,