fix(python): publish raw austin profiles as .txt, not .svg

internal/agent/profiler/common/common.go

@@ -70,7 +70,10 @@ func GetFileExtension(tool api.ProfilingTool, outputType api.OutputType) string
 			// api.FlameGraph
 			return ".svg"
 		}
-	case api.Bpf, api.Perf:
+	// austin had no case and fell through to ".svg", so a raw (text) memory
+	// profile shipped as agent-raw-<pid>-1.svg.gz — and consumers that pick a
+	// renderer by suffix drew it as a broken image.
+	case api.Bpf, api.Perf, api.Austin:
 		switch outputType {
 		case api.Raw:
 			return ".txt"

internal/agent/profiler/common/common_test.go

@@ -2,6 +2,7 @@ package common
 
 import (
 	"path/filepath"
+	"strings"
 	"testing"
 
 	"github.com/nudgebee/application-profiler/api"
@@ -569,3 +570,9 @@ func TestGetFileExtension(t *testing.T) {
 		})
 	}
 }
+
+func TestGetFileExtension_Austin(t *testing.T) {
+	assert.Equal(t, ".txt", GetFileExtension(api.Austin, api.Raw), "a raw austin profile is text")
+	assert.Equal(t, ".svg", GetFileExtension(api.Austin, api.FlameGraph))
+	assert.True(t, strings.HasSuffix(GetResultFile("/tmp", api.Austin, api.Raw, "42", 1), "-42-1.txt"))
+}

test/e2e/python-austin.sh

@@ -65,6 +65,11 @@ profile() {
 		docker logs "$agent" >&2
 		return 1
 	fi
+	# Consumers pick a renderer by suffix; a raw profile must not look like an SVG.
+	case "$file" in
+	*.txt.gz) ;;
+	*) echo "raw profile published as $file, want *.txt.gz" >&2; return 1 ;;
+	esac
 	docker cp -q "$agent:$file" "$work/profile.gz"
 	gzip -dc "$work/profile.gz"
 }