Merge branch 'main' into worktree-issue-43-sampler-combinations

Author: stikves

swift/Sources/CoreAILanguageModels/InferenceEngines/CoreAIPipelinedEngine.swift

@@ -186,12 +186,17 @@ final class CoreAIPipelinedEngine: InferenceEngine, Sendable {
     }
 
     func reset() {
-        drain()
+        // Cancel active generation BEFORE draining — otherwise drain() waits
+        // forever for a producer that will never release the engine.
         _activeToken.withLock {
             $0?.cancel()
             $0 = nil
         }
-        _generationTask.withLock { $0 = nil }
+        _generationTask.withLock {
+            $0?.cancel()
+            $0 = nil
+        }
+        drain()
         guard tryAcquireEngine() else { return }
         defer { releaseEngine() }
         engine.reset()

swift/Sources/Tools/image-segmenter/ImageSegmentationRunnerMain.swift

@@ -382,7 +382,9 @@ struct ImageSegmenterCLI: AsyncParsableCommand {
         }
         try writeImage(rendered, to: resolvedOutputPath)
         print("Output image written to \(resolvedOutputPath)")
+        #if os(macOS)
         openFile(at: resolvedOutputPath)
+        #endif
     }
 
     // MARK: - Rendering
@@ -503,13 +505,15 @@ struct ImageSegmenterCLI: AsyncParsableCommand {
         }
     }
 
+    #if os(macOS)
     private func openFile(at path: String) {
         let expanded = NSString(string: path).expandingTildeInPath
         let process = Process()
         process.executableURL = URL(fileURLWithPath: "/usr/bin/open")
         process.arguments = [expanded]
         try? process.run()
     }
+    #endif
 
     // MARK: - Parity helpers (.npy reader + CGImage builder + metrics)