Normalize the default configuration discovery paths for all three config files, and update documentation and tests accordingly

internal/app/remote_session_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"errors"
-	"os"
 	"path/filepath"
 	"strings"
 	"testing"
@@ -66,16 +65,7 @@ func TestExecuteLocalSessionDiscoveryPrecedenceSkipsRemote(t *testing.T) {
 	pipelinePath, campaignPath, sessionPath := writeValidConfigFiles(t, workspaceRoot)
 	fake := &storage.FakeBackend{}
 	var storeInitCalls int
-	restoreAppConfigTestGlobals(t, fake, &storeInitCalls, config.DefaultSessionConfigSearchPaths)
-
-	originalWD, err := os.Getwd()
-	if err != nil {
-		t.Fatalf("Getwd(): %v", err)
-	}
-	if err := os.Chdir(filepath.Dir(sessionPath)); err != nil {
-		t.Fatalf("Chdir(%q): %v", filepath.Dir(sessionPath), err)
-	}
-	t.Cleanup(func() { _ = os.Chdir(originalWD) })
+	restoreAppConfigTestGlobals(t, fake, &storeInitCalls, []string{sessionPath})
 
 	var stdout bytes.Buffer
 	var stderr bytes.Buffer