ci: Archives target-specific binary

Ensures the pipeline archives the correct binary for each target architecture. Uses CARGO_BUILD_TARGET to locate and rename the binary before archiving.

Jenkinsfile

@@ -62,17 +62,31 @@ pipeline {
 					}
 
 					stage('Archive artifact') {
-						steps {
-							sh '''
-							ls -l target
-							find -name sqm-autorate-rust
-							'''
-							/*dir("target/${TARGET}/release") {
-								sh "cp -v sqm-autorate-rust sqm-autorate-rust-${TARGET}"
-								archiveArtifacts artifacts: "sqm-autorate-rust-${TARGET}", fingerprint: true, onlyIfSuccessful: true
-							}*/
-						}
-					}
+                        steps {
+                            sh '''
+                                # 1. Construct the specific path for the current architecture
+                                # CARGO_BUILD_TARGET is provided by the Docker image (e.g., aarch64-unknown-linux-musl)
+                                BINARY_PATH="target/${CARGO_BUILD_TARGET}/release/sqm-autorate-rust"
+
+                                # 2. Verify it exists
+                                if [ -f "$BINARY_PATH" ]; then
+                                    echo "Found compiled binary at: $BINARY_PATH"
+                                    
+                                    # 3. Rename with the matrix tag (e.g., sqm-autorate-rust-aarch64-musl)
+                                    # This ensures unique filenames in the shared workspace root
+                                    cp "$BINARY_PATH" "sqm-autorate-rust-${TARGET}"
+                                else
+                                    echo "ERROR: Could not find binary at $BINARY_PATH"
+                                    # List target dir to help debug if it fails
+                                    ls -R target/
+                                    exit 1
+                                fi
+                            '''
+                            
+                            // 4. Archive the specific file we just copied
+                            archiveArtifacts artifacts: "sqm-autorate-rust-${TARGET}", fingerprint: true, onlyIfSuccessful: true
+                        }
+                    }
 				}
 			}
 		}