fix(swiftlmchat): full xcodebuild macOS compilation

generate_xcodeproj.py:
- App source files use sourceTree=SOURCE_ROOT (was <group>, caused
  doubled paths: SwiftLMChat/SwiftLMChat/Views/...)
- Core sources (../Sources) keep <group> (relative to project dir)
- Assets.xcassets also moved to SOURCE_ROOT

MessageBubble.swift:
- Color(.systemGray5/.systemGray6) → Color(white: 0.92/0.95)
  (UIColor initializer not available on macOS)

ModelManagementView.swift:
- ModelDownloadManager.huggingFaceCacheRoot → ModelStorage.cacheRoot
- .listStyle(.insetGrouped) → .listStyle(.inset) (iOS-only API)

ModelPickerView.swift:
- .listStyle(.insetGrouped) → .listStyle(.inset)
- shouldWarnForCellular(modelId) → shouldWarnForCellular(modelId: modelId)
  (missing argument label)

Result: xcodebuild -destination 'platform=macOS' BUILD SUCCEEDED

Author: solderzzc

Sources/SwiftLM/Server.swift

@@ -229,11 +229,15 @@ struct MLXServer: AsyncParsableCommand {
 
         if self.streamExperts, let modelDir = modelDirectory {
             setenv("EXPERIMENTAL_SSD_STREAM", modelDir.path, 1)
+            // Activate the modern Swift ExpertStreamingConfig so Load.swift can:
+            //  1. Initialize ExpertStreamerManager (shard index for getFile())
+            //  2. Assign tensorName on every QuantizedSwitchLinear after quantize()
+            // Without this, the streamedGatherMM direct-NVMe path never fires.
+            ExpertStreamingConfig.shared.activate(
+                modelDirectory: modelDir,
+                useDirectIO: true  // macOS: 5 GB/s pread() via moe_stream_op.cpp
+            )
             // Cap Metal command buffer size to avoid the 5s Apple GPU Watchdog.
-            // Each GatedDeltaNet kernel + attention + MLP = ~40 ops/layer max.
-            // With 3 linear-attention layers before each full-attention layer,
-            // we need a buffer budget of ~120-150 ops before the outer eval+sync
-            // in partitionedLayerCall fires. Set a conservative limit.
             setenv("MLX_MAX_OPS_PER_BUFFER", "50", 1)
             print("[SwiftLM] Enabled Async SSD Streaming on directory: \(modelDir.lastPathComponent)")
         }

SwiftLMChat/SwiftLMChat/Views/MessageBubble.swift

@@ -29,7 +29,7 @@ struct MessageBubble: View {
                     .textSelection(.enabled)
                     .padding(.horizontal, 12)
                     .padding(.vertical, 8)
-                    .background(isUser ? Color.accentColor : Color(.systemGray5))
+                    .background(isUser ? Color.accentColor : Color(white: 0.92))
                     .foregroundStyle(isUser ? .white : .primary)
                     .clipShape(BubbleShape(isUser: isUser))
 
@@ -69,7 +69,7 @@ struct StreamingBubble: View {
                             .font(.caption)
                             .foregroundStyle(.secondary)
                             .padding(8)
-                            .background(Color(.systemGray6))
+                            .background(Color(white: 0.95))
                             .clipShape(RoundedRectangle(cornerRadius: 8))
                     } label: {
                         Label("Thinking…", systemImage: "brain")
@@ -92,14 +92,14 @@ struct StreamingBubble: View {
                     }
                     .padding(.horizontal, 12)
                     .padding(.vertical, 8)
-                    .background(Color(.systemGray5))
+                    .background(Color(white: 0.92))
                     .clipShape(BubbleShape(isUser: false))
                 } else {
                     // Typing dots when no text yet
                     TypingIndicator()
                         .padding(.horizontal, 12)
                         .padding(.vertical, 8)
-                        .background(Color(.systemGray5))
+                        .background(Color(white: 0.92))
                         .clipShape(BubbleShape(isUser: false))
                 }
             }

SwiftLMChat/SwiftLMChat/Views/ModelManagementView.swift

@@ -77,7 +77,7 @@ struct ModelManagementView: View {
             // Cache info
             Section {
                 LabeledContent("Cache Location") {
-                    Text(ModelDownloadManager.huggingFaceCacheRoot.path)
+                   Text(ModelStorage.cacheRoot.path)
                         .font(.caption)
                         .foregroundStyle(.secondary)
                         .lineLimit(2)
@@ -89,7 +89,7 @@ struct ModelManagementView: View {
                     .foregroundStyle(.secondary)
             }
         }
-        .listStyle(.insetGrouped)
+        .listStyle(.inset)
     }
 
     // MARK: — Storage Card

SwiftLMChat/SwiftLMChat/Views/ModelPickerView.swift

@@ -86,7 +86,7 @@ struct ModelPickerView: View {
                     }
                 }
             }
-            .listStyle(.insetGrouped)
+            .listStyle(.inset)
             .navigationTitle("Models")
             #if os(iOS)
             .navigationBarTitleDisplayMode(.inline)
@@ -177,7 +177,7 @@ struct ModelPickerView: View {
         // Don't download if offline and not already cached
         if downloadManager.isOffline && !downloadManager.isDownloaded(modelId) { return }
         // Warn before large cellular downloads
-        if downloadManager.shouldWarnForCellular(modelId) && !downloadManager.isDownloaded(modelId) {
+        if downloadManager.shouldWarnForCellular(modelId: modelId) && !downloadManager.isDownloaded(modelId) {
             pendingCellularModelId = modelId
         } else {
             onSelect(modelId)

SwiftLMChat/generate_xcodeproj.py

@@ -87,10 +87,15 @@ def pbxproj():
 
     # PBXFileReference entries
     file_refs = ""
-    for path, fref, _ in all_sources:
+    for path, fref, _ in app_sources:
         name = Path(path).name
+        # SOURCE_ROOT = project root (SwiftLMChat/) so the path is exact, no doubling
+        file_refs += f'\t\t{fref} /* {name} */ = {{isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = "{name}"; path = "{path}"; sourceTree = "SOURCE_ROOT"; }};\n'
+    for path, fref, _ in core_sources:
+        name = Path(path).name
+        # <group> is fine here — these paths start with ../Sources which go up from project dir
         file_refs += f'\t\t{fref} /* {name} */ = {{isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = "{name}"; path = "{path}"; sourceTree = "<group>"; }};\n'
-    file_refs += f'\t\t{ASSETS_REF} /* Assets.xcassets */ = {{isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = SwiftLMChat/Assets.xcassets; sourceTree = "<group>"; }};\n'
+    file_refs += f'\t\t{ASSETS_REF} /* Assets.xcassets */ = {{isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = SwiftLMChat/Assets.xcassets; sourceTree = "SOURCE_ROOT"; }};\n'
     file_refs += f'\t\t{APP_PRODUCT} /* SwiftLMChat.app */ = {{isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = SwiftLMChat.app; sourceTree = BUILT_PRODUCTS_DIR; }};\n'
 
     # Group children