Added filesystem-based secrets loading configuration

internal/app/plan_test.go

@@ -89,6 +89,53 @@ func TestPlanShowsRunAndSkipFromManifest(t *testing.T) {
 	}
 }
 
+func TestPlanFailsWhenConfiguredSecretsDirMissing(t *testing.T) {
+	workspaceRoot := t.TempDir()
+	configDir := t.TempDir()
+	pipelinePath := filepath.Join(configDir, "pipeline.yml")
+	sessionPath := filepath.Join(configDir, "session.yml")
+
+	pipelineYAML := `workspace:
+  root: ` + workspaceRoot + `
+storage:
+  backend: local
+secrets:
+  env_dir: ./missing-secrets
+whisperx:
+  transcribe_url: https://example.com/transcribe
+seriatim:
+  binary: seriatim
+audita:
+  binary: audita
+analyzer:
+  timeout: 20m
+notification:
+  timeout: 10s
+`
+	sessionYAML := `session_id: 2026-05-03
+inputs:
+  audio_dir: ./audio
+  speakers_file: ./speakers.yml
+  autocorrect_file: ./autocorrect.yml
+  glossary_file: ./glossary.yml
+`
+	if err := os.WriteFile(pipelinePath, []byte(pipelineYAML), 0o644); err != nil {
+		t.Fatalf("write pipeline.yml: %v", err)
+	}
+	if err := os.WriteFile(sessionPath, []byte(sessionYAML), 0o644); err != nil {
+		t.Fatalf("write session.yml: %v", err)
+	}
+
+	var out bytes.Buffer
+	err := Plan(context.Background(), []string{"--config", pipelinePath, "--session", sessionPath}, &out)
+	if err == nil {
+		t.Fatal("expected error, got nil")
+	}
+	if !strings.Contains(err.Error(), "read secrets env_dir") {
+		t.Fatalf("error = %q, want secrets read error context", err.Error())
+	}
+}
+
 func assertDir(t *testing.T, path string) {
 	t.Helper()
 	info, err := os.Stat(path)