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/api-server/src/generated_asset_sheets.rs

@@ -197,6 +197,86 @@ pub(crate) fn slice_generated_asset_sheet(
     Ok(slices)
 }
 
+pub(crate) fn slice_generated_asset_sheet_two_items_per_row(
+    image: &DownloadedOpenAiImage,
+    item_names: &[String],
+    grid_size: usize,
+    views_per_item: usize,
+) -> Result<Vec<Vec<GeneratedAssetSheetSliceImage>>, AppError> {
+    if grid_size == 0 || views_per_item == 0 {
+        return Err(
+            AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
+                "provider": GENERATED_ASSET_SHEET_PROVIDER,
+                "message": "系列素材图集的 n 和每物品视图数必须大于 0。",
+            })),
+        );
+    }
+    if !grid_size.is_multiple_of(views_per_item) {
+        return Err(
+            AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
+                "provider": GENERATED_ASSET_SHEET_PROVIDER,
+                "message": "系列素材图集每行必须能均分为若干物品。",
+                "gridSize": grid_size,
+                "viewsPerItem": views_per_item,
+            })),
+        );
+    }
+
+    let grid_size_u32 = u32::try_from(grid_size).map_err(|_| {
+        AppError::from_status(StatusCode::BAD_REQUEST).with_details(json!({
+            "provider": GENERATED_ASSET_SHEET_PROVIDER,
+            "message": "系列素材图集的 n 超出可支持范围。",
+        }))
+    })?;
+    let source = image::load_from_memory(image.bytes.as_slice()).map_err(|error| {
+        AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
+            "provider": GENERATED_ASSET_SHEET_PROVIDER,
+            "message": format!("系列素材图集解码失败：{error}"),
+        }))
+    })?;
+    let source = apply_generated_asset_sheet_green_screen_alpha(source);
+    let (width, height) = source.dimensions();
+    if width / grid_size_u32 == 0 || height / grid_size_u32 == 0 {
+        return Err(
+            AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
+                "provider": GENERATED_ASSET_SHEET_PROVIDER,
+                "message": "系列素材图集尺寸过小，无法切割。",
+            })),
+        );
+    }
+
+    let items_per_row = grid_size / views_per_item;
+    let max_item_count = grid_size.saturating_mul(items_per_row);
+    let mut slices = Vec::with_capacity(item_names.len().min(max_item_count));
+    for item_index in 0..item_names.len().min(max_item_count) {
+        let row = (item_index / items_per_row) as u32;
+        let start_col = ((item_index % items_per_row) * views_per_item) as u32;
+        let mut views = Vec::with_capacity(views_per_item);
+        for view_offset in 0..views_per_item {
+            let col = start_col + view_offset as u32;
+            let (crop_x, crop_y, crop_width, crop_height) =
+                resolve_generated_asset_sheet_cell_crop(&source, grid_size_u32, row, col);
+            let cropped = source.crop_imm(crop_x, crop_y, crop_width, crop_height);
+            let cleaned = crop_generated_asset_sheet_view_edge_matte(cropped);
+            let mut cursor = std::io::Cursor::new(Vec::new());
+            cleaned
+                .write_to(&mut cursor, ImageFormat::Png)
+                .map_err(|error| {
+                    AppError::from_status(StatusCode::BAD_GATEWAY).with_details(json!({
+                        "provider": GENERATED_ASSET_SHEET_PROVIDER,
+                        "message": format!("系列素材图集切割失败：{error}"),
+                    }))
+                })?;
+            views.push(GeneratedAssetSheetSliceImage {
+                bytes: cursor.into_inner(),
+            });
+        }
+        slices.push(views);
+    }
+
+    Ok(slices)
+}
+
 pub(crate) fn crop_generated_asset_sheet_view_edge_matte(
     image: image::DynamicImage,
 ) -> image::DynamicImage {
@@ -958,7 +1038,7 @@ fn collect_generated_asset_sheet_visible_neighbor_color(
     ))
 }
 
-fn apply_generated_asset_sheet_green_screen_alpha(
+pub(crate) fn apply_generated_asset_sheet_green_screen_alpha(
     source: image::DynamicImage,
 ) -> image::DynamicImage {
     let mut image = source.to_rgba8();