fix: trim undesired process tags

internal/processtags/processtags.go

@@ -117,6 +117,16 @@ func Reload() {
 	}
 }
 
+// isValidTagValue returns false for values that are not meaningful as process tags.
+// This filters out empty strings, filesystem roots, and the "bin" directory.
+func isValidTagValue(value string) bool {
+	switch value {
+	case "", "/", "\\", "bin":
+		return false
+	}
+	return true
+}
+
 func collect() map[string]string {
 	tags := make(map[string]string)
 	execPath, err := os.Executable()
@@ -125,14 +135,19 @@ func collect() map[string]string {
 	} else {
 		baseDirName := filepath.Base(filepath.Dir(execPath))
 		tags[tagEntrypointName] = filepath.Base(execPath)
-		tags[tagEntrypointBasedir] = baseDirName
+		if isValidTagValue(baseDirName) {
+			tags[tagEntrypointBasedir] = baseDirName
+		}
 		tags[tagEntrypointType] = entrypointTypeExecutable
 	}
 	wd, err := os.Getwd()
 	if err != nil {
 		log.Debug("failed to get working directory: %s", err.Error())
 	} else {
-		tags[tagEntrypointWorkdir] = filepath.Base(wd)
+		workdir := filepath.Base(wd)
+		if isValidTagValue(workdir) {
+			tags[tagEntrypointWorkdir] = workdir
+		}
 	}
 	return tags
 }

internal/processtags/processtags_test.go

@@ -35,3 +35,27 @@ func TestProcessTags(t *testing.T) {
 		assert.Empty(t, p.Slice())
 	})
 }
+
+func TestIsValidTagValue(t *testing.T) {
+	tests := []struct {
+		name  string
+		value string
+		want  bool
+	}{
+		{name: "empty string", value: "", want: false},
+		{name: "forward slash", value: "/", want: false},
+		{name: "backslash", value: "\\", want: false},
+		{name: "bin", value: "bin", want: false},
+		{name: "dot", value: ".", want: true},
+		{name: "valid app name", value: "myapp", want: true},
+		{name: "valid usr", value: "usr", want: true},
+		{name: "valid workspace", value: "workspace", want: true},
+		{name: "valid hyphenated name", value: "my-service", want: true},
+		{name: "valid dotted name", value: "app.test", want: true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equal(t, tt.want, isValidTagValue(tt.value))
+		})
+	}
+}