package cli

import (
	"bytes"
	"context"
	"encoding/json"
	"errors"
	"os"
	"path/filepath"
	"reflect"
	"sort"
	"strings"
	"testing"

	"gitea.maximumdirect.net/eric/notarius/internal/core/artifacts"
	"gitea.maximumdirect.net/eric/notarius/internal/core/config"
	"gitea.maximumdirect.net/eric/notarius/internal/core/diagnostics"
	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
	"gitea.maximumdirect.net/eric/notarius/internal/modules/chunk/dnd/scenes"
	"gitea.maximumdirect.net/eric/notarius/internal/modules/chunk/generic"
	"gitea.maximumdirect.net/eric/notarius/internal/modules/extract/dnd/spells"
	"gitea.maximumdirect.net/eric/notarius/internal/modules/input/seriatim"
	"gitea.maximumdirect.net/eric/notarius/internal/modules/merge/appendorder"
	"gitea.maximumdirect.net/eric/notarius/internal/modules/normalize/noop"
	jsonoutput "gitea.maximumdirect.net/eric/notarius/internal/modules/output/json"
)

func TestRunNoArgsWritesUsageToStdout(t *testing.T) {
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := Run(nil, &stdout, &stderr)

	if code != 0 {
		t.Fatalf("Run() code = %d, want 0", code)
	}
	if stdout.String() != usage {
		t.Fatalf("stdout = %q, want %q", stdout.String(), usage)
	}
	if stderr.Len() != 0 {
		t.Fatalf("stderr = %q, want empty", stderr.String())
	}
}

func TestRunHelpArgsWriteUsageToStdout(t *testing.T) {
	tests := []struct {
		name string
		args []string
	}{
		{name: "help", args: []string{"help"}},
		{name: "long help flag", args: []string{"--help"}},
		{name: "short help flag", args: []string{"-h"}},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			var stdout bytes.Buffer
			var stderr bytes.Buffer

			code := Run(tt.args, &stdout, &stderr)

			if code != 0 {
				t.Fatalf("Run() code = %d, want 0", code)
			}
			if stdout.String() != usage {
				t.Fatalf("stdout = %q, want %q", stdout.String(), usage)
			}
			if !strings.Contains(stdout.String(), "config validate") || !strings.Contains(stdout.String(), "pipelines list") {
				t.Fatalf("usage does not mention new commands: %q", stdout.String())
			}
			if stderr.Len() != 0 {
				t.Fatalf("stderr = %q, want empty", stderr.String())
			}
		})
	}
}

func TestRunUnknownCommandWritesErrorAndUsageToStderr(t *testing.T) {
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := Run([]string{"extract"}, &stdout, &stderr)

	if code != 2 {
		t.Fatalf("Run() code = %d, want 2", code)
	}
	if stdout.Len() != 0 {
		t.Fatalf("stdout = %q, want empty", stdout.String())
	}
	gotStderr := stderr.String()
	if !strings.Contains(gotStderr, "notarius: unknown command \"extract\"") {
		t.Fatalf("stderr = %q, want unknown command error", gotStderr)
	}
	if !strings.Contains(gotStderr, usage) {
		t.Fatalf("stderr = %q, want usage", gotStderr)
	}
}

func TestRunConfigValidateSuccessWithFakeCatalog(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events", "notes"))
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--pipeline", "example"}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if !strings.Contains(stdout.String(), "is valid for pipeline") {
		t.Fatalf("stdout = %q, want validation success", stdout.String())
	}
	if stderr.Len() != 0 {
		t.Fatalf("stderr = %q, want empty", stderr.String())
	}
}

func TestProductionCatalogIncludesDefaultModules(t *testing.T) {
	catalog, err := productionCatalog()
	if err != nil {
		t.Fatalf("productionCatalog() error = %v, want nil", err)
	}

	tests := []struct {
		name string
		got  func() (pipeline.ModuleSpec, bool)
		want pipeline.ModuleSpec
	}{
		{
			name: "seriatim input",
			got:  func() (pipeline.ModuleSpec, bool) { return catalog.Inputs.Spec(seriatim.Key) },
			want: seriatim.ModuleSpec(),
		},
		{
			name: "generic chunker",
			got:  func() (pipeline.ModuleSpec, bool) { return catalog.Chunkers.Spec(generic.Key) },
			want: generic.ModuleSpec(),
		},
		{
			name: "dnd scenes chunker",
			got:  func() (pipeline.ModuleSpec, bool) { return catalog.Chunkers.Spec(scenes.Key) },
			want: scenes.ModuleSpec(),
		},
		{
			name: "dnd spells extractor",
			got:  func() (pipeline.ModuleSpec, bool) { return catalog.Extractors.Spec(spells.Key) },
			want: spells.ModuleSpec(),
		},
		{
			name: "appendorder merger",
			got:  func() (pipeline.ModuleSpec, bool) { return catalog.Mergers.Spec(appendorder.Key) },
			want: appendorder.ModuleSpec(),
		},
		{
			name: "noop normalizer",
			got:  func() (pipeline.ModuleSpec, bool) { return catalog.Normalizers.Spec(noop.Key) },
			want: noop.ModuleSpec(),
		},
		{
			name: "json output",
			got:  func() (pipeline.ModuleSpec, bool) { return catalog.Outputs.Spec(jsonoutput.Key) },
			want: jsonoutput.ModuleSpec(),
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			got, ok := test.got()
			if !ok {
				t.Fatalf("module spec ok = false, want true")
			}
			if !reflect.DeepEqual(got, test.want) {
				t.Fatalf("module spec = %#v, want %#v", got, test.want)
			}
		})
	}
}

func TestRunConfigValidateUsesProductionCatalogByDefault(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--pipeline", "dnd-session"}, &stdout, &stderr, Options{})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if !strings.Contains(stdout.String(), "is valid for pipeline") {
		t.Fatalf("stdout = %q, want validation success", stdout.String())
	}
}

func TestRunConfigValidateAcceptsDNDScenesChunker(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAMLWithChunk("dnd-session", scenes.Key, "dnd/spells"))
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--pipeline", "dnd-session"}, &stdout, &stderr, Options{})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if !strings.Contains(stdout.String(), "is valid for pipeline") {
		t.Fatalf("stdout = %q, want validation success", stdout.String())
	}
}

func TestRunConfigValidateUnknownProductionModuleIncludesContext(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "missing/extract"))
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--pipeline", "dnd-session"}, &stdout, &stderr, Options{})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	got := stderr.String()
	for _, want := range []string{"dnd-session", "extract", "missing/extract", "not registered"} {
		if !strings.Contains(got, want) {
			t.Fatalf("stderr = %q, want substring %q", got, want)
		}
	}
}

func TestRunConfigValidateReportsParseErrors(t *testing.T) {
	configPath := writeFile(t, "config.yml", "version: 1\n")
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"config", "validate", "--config", configPath}, &stdout, &stderr, Options{})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if stdout.Len() != 0 {
		t.Fatalf("stdout = %q, want empty", stdout.String())
	}
	if !strings.Contains(stderr.String(), "unsupported config version") {
		t.Fatalf("stderr = %q, want parse error", stderr.String())
	}
}

func TestRunConfigValidatePipelineOnlySuccessAndInvalidLane(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events", "notes"))

	t.Run("success", func(t *testing.T) {
		var stdout bytes.Buffer
		var stderr bytes.Buffer

		code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--pipeline", "example", "--only", "notes"}, &stdout, &stderr, Options{
			Catalog: fakeCatalog(t),
		})

		if code != 0 {
			t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
		}
	})

	t.Run("invalid lane", func(t *testing.T) {
		var stdout bytes.Buffer
		var stderr bytes.Buffer

		code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--pipeline", "example", "--only", "missing"}, &stdout, &stderr, Options{
			Catalog: fakeCatalog(t),
		})

		if code != 1 {
			t.Fatalf("RunWithOptions() code = %d, want 1", code)
		}
		if !strings.Contains(stderr.String(), "selected artifact lane") {
			t.Fatalf("stderr = %q, want invalid lane error", stderr.String())
		}
	})
}

func TestRunConfigValidateOnlyWithoutPipelineFails(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--only", "events"}, &stdout, &stderr, Options{})

	if code != 2 {
		t.Fatalf("RunWithOptions() code = %d, want 2", code)
	}
	if !strings.Contains(stderr.String(), "--only requires --pipeline") {
		t.Fatalf("stderr = %q, want only/pipeline error", stderr.String())
	}
}

func TestRunConfigValidateRejectsMalformedOnlyValues(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events", "notes"))
	tests := []string{",", "notes,", ",notes", "events, ,notes"}

	for _, only := range tests {
		t.Run(only, func(t *testing.T) {
			var stdout bytes.Buffer
			var stderr bytes.Buffer

			code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--pipeline", "example", "--only", only}, &stdout, &stderr, Options{
				Catalog: fakeCatalog(t),
			})

			if code != 2 {
				t.Fatalf("RunWithOptions() code = %d, want 2", code)
			}
			if stdout.Len() != 0 {
				t.Fatalf("stdout = %q, want empty", stdout.String())
			}
			if !strings.Contains(stderr.String(), "--only") {
				t.Fatalf("stderr = %q, want --only error", stderr.String())
			}
		})
	}
}

func TestRunPipelinesListSortedTextOutput(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAMLForPipelines(map[string][]string{
		"zeta":  {"events"},
		"alpha": {"events"},
	}))
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"pipelines", "list", "--config", configPath}, &stdout, &stderr, Options{})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if got, want := stdout.String(), "alpha\nzeta\n"; got != want {
		t.Fatalf("stdout = %q, want %q", got, want)
	}
}

func TestRunPipelinesListStableJSONOutput(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAMLForPipelines(map[string][]string{
		"b": {"events"},
		"a": {"events"},
	}))
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"pipelines", "list", "--config", configPath, "--json"}, &stdout, &stderr, Options{})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if got, want := stdout.String(), "{\"pipelines\":[\"a\",\"b\"]}\n"; got != want {
		t.Fatalf("stdout = %q, want %q", got, want)
	}
}

func TestRunUsesNotariusConfigWhenConfigFlagAbsent(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"pipelines", "list"}, &stdout, &stderr, Options{
		LookupEnv: mapLookup(map[string]string{"NOTARIUS_CONFIG": configPath}),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if got, want := stdout.String(), "example\n"; got != want {
		t.Fatalf("stdout = %q, want %q", got, want)
	}
}

func TestRunConfigValidateRejectsStaleLLMProfiles(t *testing.T) {
	configPath := writeTestConfig(t, `version: 2
llm_profiles:
  default: {}
pipelines:
  example:
    input: fake/input
    artifacts:
      events:
        extract: fake/extract
`)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"config", "validate", "--config", configPath}, &stdout, &stderr, Options{})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "llm_profiles") {
		t.Fatalf("stderr = %q, want stale llm_profiles error", stderr.String())
	}
}

func TestRunMissingConfigPathProducesActionableError(t *testing.T) {
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"config", "validate", "--config", filepath.Join(t.TempDir(), "missing.yml")}, &stdout, &stderr, Options{})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "config file") || !strings.Contains(stderr.String(), "not available") {
		t.Fatalf("stderr = %q, want actionable missing config error", stderr.String())
	}
}

func TestRunRejectsAdHocStructuralFlags(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	flags := []string{"--extractor", "--chunker", "--input", "--merge", "--normalize"}

	for _, flagName := range flags {
		t.Run(flagName, func(t *testing.T) {
			var stdout bytes.Buffer
			var stderr bytes.Buffer

			code := RunWithOptions([]string{"config", "validate", "--config", configPath, flagName, "value"}, &stdout, &stderr, Options{})

			if code != 2 {
				t.Fatalf("RunWithOptions() code = %d, want 2", code)
			}
			if !strings.Contains(stderr.String(), "flag provided but not defined") {
				t.Fatalf("stderr = %q, want invalid flag error", stderr.String())
			}
		})
	}
}

func TestRunInvalidFlagsExitTwo(t *testing.T) {
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"pipelines", "list", "--bogus"}, &stdout, &stderr, Options{})

	if code != 2 {
		t.Fatalf("RunWithOptions() code = %d, want 2", code)
	}
	if !strings.Contains(stderr.String(), "flag provided but not defined") {
		t.Fatalf("stderr = %q, want invalid flag error", stderr.String())
	}
}

func TestProductionLLMClientFactoryBuildsScriptoriumRuntime(t *testing.T) {
	cfg := config.Default()

	client, profiles, err := productionLLMClientFactory(context.Background(), cfg, "mistral-small-3")
	if err != nil {
		t.Fatalf("productionLLMClientFactory() error = %v, want nil", err)
	}
	if client == nil {
		t.Fatal("productionLLMClientFactory() client = nil, want client")
	}
	if profiles != nil {
		t.Fatalf("productionLLMClientFactory() profiles = %#v, want runtime-reported profiles", profiles)
	}
}

func TestRunPipelineMissingPipelineID(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := writeSeriatimInput(t)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "--config", configPath, "--input", inputPath}, &stdout, &stderr, Options{})

	if code != 2 {
		t.Fatalf("RunWithOptions() code = %d, want 2", code)
	}
	if !strings.Contains(stderr.String(), "pipeline ID") {
		t.Fatalf("stderr = %q, want missing pipeline ID error", stderr.String())
	}
}

func TestRunPipelineMissingInputFlag(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath}, &stdout, &stderr, Options{})

	if code != 2 {
		t.Fatalf("RunWithOptions() code = %d, want 2", code)
	}
	if !strings.Contains(stderr.String(), "--input") {
		t.Fatalf("stderr = %q, want missing input error", stderr.String())
	}
}

func TestRunPipelineRejectsUnknownFlag(t *testing.T) {
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--extractor", "dnd/spells"}, &stdout, &stderr, Options{})

	if code != 2 {
		t.Fatalf("RunWithOptions() code = %d, want 2", code)
	}
	if !strings.Contains(stderr.String(), "flag provided but not defined") {
		t.Fatalf("stderr = %q, want invalid flag error", stderr.String())
	}
}

func TestRunPipelineUnknownPipeline(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := writeSeriatimInput(t)
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "missing", "--config", configPath, "--input", inputPath, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "pipeline \"missing\" is not configured") {
		t.Fatalf("stderr = %q, want unknown pipeline error", stderr.String())
	}
}

func TestRunPipelineUnknownOnlyLane(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := writeSeriatimInput(t)
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--only", "missing", "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "selected artifact lane") {
		t.Fatalf("stderr = %q, want selected lane error", stderr.String())
	}
}

func TestRunPipelineInvalidInputPath(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("stderr = %q, want input read error", stderr.String())
	}
}

func TestRunPipelineSuccessUsesProductionRegistriesAndFakeLLM(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := writeSeriatimInput(t)
	outputDir := t.TempDir()
	diagnosticsDir := t.TempDir()
	client := newFakeRunLLMClient(false)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(client, nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if client.calls != 1 {
		t.Fatalf("LLM calls = %d, want 1", client.calls)
	}
	for _, want := range []string{"dnd-session", "approved=1", "rejected=0", outputDir} {
		if !strings.Contains(stdout.String(), want) {
			t.Fatalf("stdout = %q, want substring %q", stdout.String(), want)
		}
	}
	if stderr.Len() != 0 {
		t.Fatalf("stderr = %q, want empty", stderr.String())
	}
}

func TestRunPipelineOnlySelectsRequestedLane(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAMLForLanes("dnd-session", "spells", "rituals"))
	inputPath := writeSeriatimInput(t)
	outputDir := t.TempDir()
	diagnosticsDir := t.TempDir()
	client := newFakeRunLLMClient(false)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--only", "spells", "--output-dir", outputDir, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(client, nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if client.calls != 1 {
		t.Fatalf("LLM calls = %d, want only selected lane to run once", client.calls)
	}
	if !strings.Contains(stdout.String(), "approved=1") {
		t.Fatalf("stdout = %q, want approved count", stdout.String())
	}
}

func TestRunPipelineLLMFactoryFailure(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := writeSeriatimInput(t)
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), errors.New("factory unavailable")),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "create LLM client") || !strings.Contains(stderr.String(), "factory unavailable") {
		t.Fatalf("stderr = %q, want LLM factory error", stderr.String())
	}
}

func TestRunPipelineValidationRejectionCompletesSuccessfully(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := writeSeriatimInput(t)
	outputDir := t.TempDir()
	diagnosticsDir := t.TempDir()
	client := newFakeRunLLMClient(true)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(client, nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if !strings.Contains(stdout.String(), "approved=0") || !strings.Contains(stdout.String(), "rejected=1") {
		t.Fatalf("stdout = %q, want rejection counts", stdout.String())
	}
}

func TestRunPipelineLLMProfileOverrideSelectsFactoryProfile(t *testing.T) {
	profilePath := writeScriptoriumProfileFile(t, "runtime", "http://profile.test/v1", "test-model")
	configPath := writeTestConfig(t, mvpConfigYAMLWithProfileFile("dnd-session", profilePath))
	inputPath := writeSeriatimInput(t)
	outputDir := t.TempDir()
	diagnosticsDir := t.TempDir()
	client := newFakeRunLLMClient(false)
	factory := &recordingLLMFactory{client: client}
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--llm-profile", "runtime", "--output-dir", outputDir, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: factory.build,
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if got, want := strings.Join(factory.profileIDs, ","), "runtime"; got != want {
		t.Fatalf("factory profile IDs = %q, want %q", got, want)
	}
}

func TestRunConfigValidateRejectsUnknownExplicitScriptoriumProfile(t *testing.T) {
	profilePath := writeScriptoriumProfileFile(t, "known", "http://profile.test/v1", "test-model")
	configPath := writeTestConfig(t, `version: 2
scriptorium:
  profile_file: `+profilePath+`
pipelines:
  example:
    input: fake/input
    artifacts:
      events:
        extract:
          module: fake/extract
          llm_profile: missing
`)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--pipeline", "example"}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "Scriptorium profile") || !strings.Contains(stderr.String(), "missing") {
		t.Fatalf("stderr = %q, want unknown Scriptorium profile", stderr.String())
	}
}

func TestRunPipelineSessionIDFlagRecordsExplicitTrimmedValue(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := writeSeriatimInput(t)
	outputDir := t.TempDir()
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "dnd-session",
		"--config", configPath,
		"--input", inputPath,
		"--session-id", " external-session ",
		"--output-dir", outputDir,
		"--diagnostics-dir", diagnosticsDir,
	}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	var manifest artifacts.RunManifest
	readJSONFile(t, filepath.Join(onlyChildDir(t, outputDir), "manifest.json"), &manifest)
	if got := manifest.Metadata["session_id"]; got != "external-session" {
		t.Fatalf("manifest metadata = %#v, want trimmed session ID", manifest.Metadata)
	}
}

func TestRunPipelineSessionIDDefaultsToParsedSourceID(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := writeSeriatimInput(t)
	outputDir := t.TempDir()
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "dnd-session",
		"--config", configPath,
		"--input", inputPath,
		"--output-dir", outputDir,
		"--diagnostics-dir", diagnosticsDir,
	}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	var manifest artifacts.RunManifest
	readJSONFile(t, filepath.Join(onlyChildDir(t, outputDir), "manifest.json"), &manifest)
	if got := manifest.Metadata["session_id"]; got != "session-alpha" {
		t.Fatalf("manifest metadata = %#v, want parsed source ID default", manifest.Metadata)
	}
}

func TestRunPipelineSessionIDFlagRejectsMissingOrBlankValue(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAML("dnd-session", "dnd/spells"))
	inputPath := writeSeriatimInput(t)
	tests := []struct {
		name string
		args []string
		want string
	}{
		{
			name: "missing value",
			args: []string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--session-id"},
			want: "flag needs an argument",
		},
		{
			name: "blank value",
			args: []string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--session-id", " \t "},
			want: "--session-id must not be empty",
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			var stdout bytes.Buffer
			var stderr bytes.Buffer

			code := RunWithOptions(test.args, &stdout, &stderr, Options{
				LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
			})

			if code != 2 {
				t.Fatalf("RunWithOptions() code = %d, want 2", code)
			}
			if !strings.Contains(stderr.String(), test.want) {
				t.Fatalf("stderr = %q, want substring %q", stderr.String(), test.want)
			}
		})
	}
}

func TestRunPipelineReferenceFlagBindsUnambiguousSlot(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	referencePath := writeFile(t, "roster.yml", "Aria\n")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "roster=" + referencePath,
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "fake/extract",
			Stage:    pipeline.StageExtract,
			Requires: []string{"chunks"},
			Provides: []string{"artifact"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "roster"},
			},
		}),
	})

	if code != 1 || !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("RunWithOptions() code = %d stderr=%q, want read input failure after resolution", code, stderr.String())
	}
	resolved := readResolvedPipeline(t, diagnosticsDir)
	refs := resolved.ArtifactLanes[0].ExtractReferences.Bindings
	want := []pipeline.ReferenceBinding{
		{LaneID: "events", SlotName: "roster", Source: referencePath, BindingSource: contracts.ReferenceBindingSourceCLI},
	}
	if !reflect.DeepEqual(refs, want) {
		t.Fatalf("resolved references = %#v, want %#v", refs, want)
	}
}

func TestRunPipelineReferenceFlagBindsLaneQualifiedSlot(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events", "notes"))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	referencePath := writeFile(t, "notes.yml", "Notes\n")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--only", "events,notes",
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "notes.roster=" + referencePath,
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "fake/extract",
			Stage:    pipeline.StageExtract,
			Requires: []string{"chunks"},
			Provides: []string{"artifact"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "roster"},
			},
		}),
	})

	if code != 1 || !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("RunWithOptions() code = %d stderr=%q, want read input failure after resolution", code, stderr.String())
	}
	resolved := readResolvedPipeline(t, diagnosticsDir)
	events := resolvedArtifactLane(t, resolved, "events")
	if len(events.ExtractReferences.Bindings) != 0 {
		t.Fatalf("events references = %#v, want none", events.ExtractReferences.Bindings)
	}
	notes := resolvedArtifactLane(t, resolved, "notes")
	if len(notes.ExtractReferences.Bindings) != 1 || notes.ExtractReferences.Bindings[0].Source != referencePath {
		t.Fatalf("notes references = %#v, want lane-qualified binding", notes.ExtractReferences.Bindings)
	}
}

func TestRunPipelineReferenceFlagBindsChunkQualifiedSlot(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	referencePath := writeFile(t, "scenes.md", "Scenes\n")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "chunk.scene_guide=" + referencePath,
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "generic",
			Stage:    pipeline.StageChunk,
			Requires: []string{"source"},
			Provides: []string{"chunks"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "scene_guide"},
			},
		}),
	})

	if code != 1 || !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("RunWithOptions() code = %d stderr=%q, want read input failure after resolution", code, stderr.String())
	}
	resolved := readResolvedPipeline(t, diagnosticsDir)
	refs := resolved.ChunkReferences.Bindings
	want := []pipeline.ReferenceBinding{
		{SlotName: "scene_guide", Source: referencePath, BindingSource: contracts.ReferenceBindingSourceCLI},
	}
	if !reflect.DeepEqual(refs, want) {
		t.Fatalf("chunk references = %#v, want %#v", refs, want)
	}
}

func TestRunPipelineReferenceFlagBindsExplicitExtractSlot(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	referencePath := writeFile(t, "roster.yml", "Aria\n")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "events.extract.roster=" + referencePath,
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "fake/extract",
			Stage:    pipeline.StageExtract,
			Requires: []string{"chunks"},
			Provides: []string{"artifact"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "roster"},
			},
		}),
	})

	if code != 1 || !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("RunWithOptions() code = %d stderr=%q, want read input failure after resolution", code, stderr.String())
	}
	resolved := readResolvedPipeline(t, diagnosticsDir)
	refs := resolved.ArtifactLanes[0].ExtractReferences.Bindings
	want := []pipeline.ReferenceBinding{
		{LaneID: "events", SlotName: "roster", Source: referencePath, BindingSource: contracts.ReferenceBindingSourceCLI},
	}
	if !reflect.DeepEqual(refs, want) {
		t.Fatalf("extract references = %#v, want %#v", refs, want)
	}
}

func TestRunPipelineReferenceFlagBindsExplicitNormalizeSlot(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	referencePath := writeFile(t, "normalize.md", "Normalize\n")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "events.normalize.notes=" + referencePath,
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "noop",
			Stage:    pipeline.StageNormalize,
			Requires: []string{"merged"},
			Provides: []string{"normalized"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "notes"},
			},
		}),
	})

	if code != 1 || !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("RunWithOptions() code = %d stderr=%q, want read input failure after resolution", code, stderr.String())
	}
	resolved := readResolvedPipeline(t, diagnosticsDir)
	refs := resolved.ArtifactLanes[0].NormalizeReferences.Bindings
	want := []pipeline.ReferenceBinding{
		{LaneID: "events", SlotName: "notes", Source: referencePath, BindingSource: contracts.ReferenceBindingSourceCLI},
	}
	if !reflect.DeepEqual(refs, want) {
		t.Fatalf("normalize references = %#v, want %#v", refs, want)
	}
}

func TestRunPipelineReferenceFlagBindsFlatSlotAcrossOneTarget(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	referencePath := writeFile(t, "normalize.md", "Normalize\n")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "notes=" + referencePath,
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "noop",
			Stage:    pipeline.StageNormalize,
			Requires: []string{"merged"},
			Provides: []string{"normalized"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "notes"},
			},
		}),
	})

	if code != 1 || !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("RunWithOptions() code = %d stderr=%q, want read input failure after resolution", code, stderr.String())
	}
	resolved := readResolvedPipeline(t, diagnosticsDir)
	if refs := resolved.ArtifactLanes[0].NormalizeReferences.Bindings; len(refs) != 1 || refs[0].Source != referencePath {
		t.Fatalf("normalize references = %#v, want flat binding", refs)
	}
}

func TestRunPipelineReferenceFlagBindsLaneSlotAcrossOneTarget(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	referencePath := writeFile(t, "normalize.md", "Normalize\n")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "events.notes=" + referencePath,
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "noop",
			Stage:    pipeline.StageNormalize,
			Requires: []string{"merged"},
			Provides: []string{"normalized"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "notes"},
			},
		}),
	})

	if code != 1 || !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("RunWithOptions() code = %d stderr=%q, want read input failure after resolution", code, stderr.String())
	}
	resolved := readResolvedPipeline(t, diagnosticsDir)
	if refs := resolved.ArtifactLanes[0].NormalizeReferences.Bindings; len(refs) != 1 || refs[0].Source != referencePath {
		t.Fatalf("normalize references = %#v, want lane-qualified binding", refs)
	}
}

func TestRunPipelineReferenceFlagRejectsAmbiguousFlatSlot(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events", "notes"))
	inputPath := writeSeriatimInput(t)
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "roster=./roster.yml",
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "fake/extract",
			Stage:    pipeline.StageExtract,
			Requires: []string{"chunks"},
			Provides: []string{"artifact"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "roster"},
			},
		}),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "multiple selected targets") || !strings.Contains(stderr.String(), "events.extract.roster") || !strings.Contains(stderr.String(), "notes.extract.roster") {
		t.Fatalf("stderr = %q, want ambiguous reference error", stderr.String())
	}
}

func TestRunPipelineReferenceFlagRejectsAmbiguousFlatSlotAcrossChunkAndExtract(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	inputPath := writeSeriatimInput(t)
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "context=./context.md",
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t,
			pipeline.ModuleSpec{
				Key:      "generic",
				Stage:    pipeline.StageChunk,
				Requires: []string{"source"},
				Provides: []string{"chunks"},
				ReferenceSlots: []contracts.ReferenceSlot{
					{Name: "context"},
				},
			},
			pipeline.ModuleSpec{
				Key:      "fake/extract",
				Stage:    pipeline.StageExtract,
				Requires: []string{"chunks"},
				Provides: []string{"artifact"},
				ReferenceSlots: []contracts.ReferenceSlot{
					{Name: "context"},
				},
			},
		),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "multiple selected targets") || !strings.Contains(stderr.String(), "chunk.context") || !strings.Contains(stderr.String(), "events.extract.context") {
		t.Fatalf("stderr = %q, want ambiguous chunk/extract reference error", stderr.String())
	}
}

func TestRunPipelineReferenceFlagRejectsAmbiguousLaneSlotAcrossExtractAndNormalize(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events"))
	inputPath := writeSeriatimInput(t)
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "events.context=./context.md",
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t,
			pipeline.ModuleSpec{
				Key:      "fake/extract",
				Stage:    pipeline.StageExtract,
				Requires: []string{"chunks"},
				Provides: []string{"artifact"},
				ReferenceSlots: []contracts.ReferenceSlot{
					{Name: "context"},
				},
			},
			pipeline.ModuleSpec{
				Key:      "noop",
				Stage:    pipeline.StageNormalize,
				Requires: []string{"merged"},
				Provides: []string{"normalized"},
				ReferenceSlots: []contracts.ReferenceSlot{
					{Name: "context"},
				},
			},
		),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "multiple selected targets in lane") || !strings.Contains(stderr.String(), "events.extract.context") || !strings.Contains(stderr.String(), "events.normalize.context") {
		t.Fatalf("stderr = %q, want ambiguous lane reference error", stderr.String())
	}
}

func TestRunPipelineReferenceFlagsRejectMalformedValues(t *testing.T) {
	tests := []struct {
		name string
		args []string
		want string
	}{
		{name: "missing equals", args: []string{"--reference", "roster"}, want: "slot=path"},
		{name: "empty path", args: []string{"--reference", "roster="}, want: "path must not be empty"},
		{name: "empty slot", args: []string{"--reference", "=./roster.yml"}, want: "slot must not be empty"},
		{name: "unsupported explicit stage", args: []string{"--reference", "a.b.c=./roster.yml"}, want: "lane.extract.slot or lane.normalize.slot"},
		{name: "too many selector parts", args: []string{"--reference", "a.b.c.d=./roster.yml"}, want: "slot, chunk.slot, lane.slot, lane.extract.slot, or lane.normalize.slot"},
		{name: "unbind with equals", args: []string{"--without-reference", "roster=./roster.yml"}, want: "without =path"},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			configPath := writeTestConfig(t, testConfigYAML("example", "events"))
			inputPath := writeSeriatimInput(t)
			var stdout bytes.Buffer
			var stderr bytes.Buffer
			args := []string{"run", "example", "--config", configPath, "--input", inputPath}
			args = append(args, test.args...)

			code := RunWithOptions(args, &stdout, &stderr, Options{Catalog: fakeCatalog(t)})
			if code != 2 {
				t.Fatalf("RunWithOptions() code = %d, want 2", code)
			}
			if !strings.Contains(stderr.String(), test.want) {
				t.Fatalf("stderr = %q, want substring %q", stderr.String(), test.want)
			}
		})
	}
}

func TestRunPipelineWithoutReferenceRemovesConfigBindingsForEligibleTargets(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAMLWithPipelineReferences("example", "events", map[string]string{
		"context": "./config-context.md",
		"notes":   "./config-notes.md",
		"roster":  "./config-roster.yml",
	}))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--without-reference", "chunk.context",
		"--without-reference", "events.extract.roster",
		"--without-reference", "events.normalize.notes",
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t,
			pipeline.ModuleSpec{
				Key:      "generic",
				Stage:    pipeline.StageChunk,
				Requires: []string{"source"},
				Provides: []string{"chunks"},
				ReferenceSlots: []contracts.ReferenceSlot{
					{Name: "context"},
				},
			},
			pipeline.ModuleSpec{
				Key:      "fake/extract",
				Stage:    pipeline.StageExtract,
				Requires: []string{"chunks"},
				Provides: []string{"artifact"},
				ReferenceSlots: []contracts.ReferenceSlot{
					{Name: "roster"},
				},
			},
			pipeline.ModuleSpec{
				Key:      "noop",
				Stage:    pipeline.StageNormalize,
				Requires: []string{"merged"},
				Provides: []string{"normalized"},
				ReferenceSlots: []contracts.ReferenceSlot{
					{Name: "notes"},
				},
			},
		),
	})

	if code != 1 || !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("RunWithOptions() code = %d stderr=%q, want read input failure after resolution", code, stderr.String())
	}
	resolved := readResolvedPipeline(t, diagnosticsDir)
	if refs := resolved.ChunkReferences.Bindings; len(refs) != 0 {
		t.Fatalf("chunk references = %#v, want none", refs)
	}
	if refs := resolved.ArtifactLanes[0].ExtractReferences.Bindings; len(refs) != 0 {
		t.Fatalf("extract references = %#v, want none", refs)
	}
	if refs := resolved.ArtifactLanes[0].NormalizeReferences.Bindings; len(refs) != 0 {
		t.Fatalf("normalize references = %#v, want none", refs)
	}
}

func TestRunPipelineWithoutReferenceRemovesOptionalConfigBinding(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAMLWithReferences("example", "events", map[string]string{"roster": "./config-roster.yml"}))
	inputPath := filepath.Join(t.TempDir(), "missing.json")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--without-reference", "roster",
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "fake/extract",
			Stage:    pipeline.StageExtract,
			Requires: []string{"chunks"},
			Provides: []string{"artifact"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "roster"},
			},
		}),
	})

	if code != 1 || !strings.Contains(stderr.String(), "read input") {
		t.Fatalf("RunWithOptions() code = %d stderr=%q, want read input failure after resolution", code, stderr.String())
	}
	resolved := readResolvedPipeline(t, diagnosticsDir)
	if refs := resolved.ArtifactLanes[0].ExtractReferences.Bindings; len(refs) != 0 {
		t.Fatalf("references = %#v, want unbound optional slot", refs)
	}
}

func TestRunPipelineWithoutReferenceFailsWhenRequiredChunkSlotWouldBeMissing(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAMLWithPipelineReferences("example", "events", map[string]string{"context": "./config-context.md"}))
	inputPath := writeSeriatimInput(t)
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--without-reference", "chunk.context",
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "generic",
			Stage:    pipeline.StageChunk,
			Requires: []string{"source"},
			Provides: []string{"chunks"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "context", Required: true},
			},
		}),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "required reference slot") || !strings.Contains(stderr.String(), "context") {
		t.Fatalf("stderr = %q, want required chunk reference error", stderr.String())
	}
}

func TestRunPipelineWithoutReferenceFailsWhenRequiredNormalizeSlotWouldBeMissing(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAMLWithPipelineReferences("example", "events", map[string]string{"notes": "./config-notes.md"}))
	inputPath := writeSeriatimInput(t)
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--without-reference", "events.normalize.notes",
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "noop",
			Stage:    pipeline.StageNormalize,
			Requires: []string{"merged"},
			Provides: []string{"normalized"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "notes", Required: true},
			},
		}),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "required reference slot") || !strings.Contains(stderr.String(), "notes") {
		t.Fatalf("stderr = %q, want required normalize reference error", stderr.String())
	}
}

func TestRunPipelineReferenceFlagRejectsUnselectedLaneSelector(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAML("example", "events", "notes"))
	inputPath := writeSeriatimInput(t)
	referencePath := writeFile(t, "notes.yml", "Notes\n")
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--only", "events",
		"--diagnostics-dir", diagnosticsDir,
		"--reference", "notes.extract.roster=" + referencePath,
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "fake/extract",
			Stage:    pipeline.StageExtract,
			Requires: []string{"chunks"},
			Provides: []string{"artifact"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "roster"},
			},
		}),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), `reference lane "notes" is not selected`) {
		t.Fatalf("stderr = %q, want unselected lane error", stderr.String())
	}
}

func TestRunPipelineWithoutReferenceFailsWhenRequiredSlotWouldBeMissing(t *testing.T) {
	configPath := writeTestConfig(t, testConfigYAMLWithReferences("example", "events", map[string]string{"roster": "./config-roster.yml"}))
	inputPath := writeSeriatimInput(t)
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{
		"run", "example",
		"--config", configPath,
		"--input", inputPath,
		"--diagnostics-dir", diagnosticsDir,
		"--without-reference", "roster",
	}, &stdout, &stderr, Options{
		Catalog: fakeCatalog(t, pipeline.ModuleSpec{
			Key:      "fake/extract",
			Stage:    pipeline.StageExtract,
			Requires: []string{"chunks"},
			Provides: []string{"artifact"},
			ReferenceSlots: []contracts.ReferenceSlot{
				{Name: "roster", Required: true},
			},
		}),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "required reference slot") || !strings.Contains(stderr.String(), "roster") {
		t.Fatalf("stderr = %q, want required reference error", stderr.String())
	}
}

func TestRunPipelineWritesDurableOutputFiles(t *testing.T) {
	diagnosticsDir := t.TempDir()
	outputDir := t.TempDir()
	configPath := writeTestConfig(t, mvpConfigYAMLWithDiagnostics("dnd-session", diagnosticsDir, "always"))
	inputPath := writeSeriatimInput(t)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	runOutputDir := onlyChildDir(t, outputDir)
	for _, name := range []string{
		"index.json",
		"manifest.json",
		"artifacts/dnd.spell_cast.json",
		"rejected.json",
		"warnings.json",
	} {
		if _, err := os.Stat(filepath.Join(runOutputDir, filepath.FromSlash(name))); err != nil {
			t.Fatalf("expected output file %q: %v", name, err)
		}
	}
	if !strings.Contains(stdout.String(), runOutputDir) {
		t.Fatalf("stdout = %q, want output path %q", stdout.String(), runOutputDir)
	}
	assertNoTemporaryFiles(t, runOutputDir)
}

func TestRunPipelineReferenceBytesProduceDistinctManifests(t *testing.T) {
	run := func(t *testing.T, referenceText string) artifacts.RunManifest {
		t.Helper()

		diagnosticsDir := t.TempDir()
		outputDir := t.TempDir()
		configDir := t.TempDir()
		referencePath := filepath.Join(configDir, "roster.txt")
		if err := os.WriteFile(referencePath, []byte(referenceText), 0o644); err != nil {
			t.Fatalf("write reference: %v", err)
		}
		configPath := filepath.Join(configDir, "config.yml")
		if err := os.WriteFile(configPath, []byte(testConfigYAMLWithReferencesAndDiagnostics("example", "events", diagnosticsDir, map[string]string{"roster": "roster.txt"})), 0o644); err != nil {
			t.Fatalf("write config: %v", err)
		}
		inputPath := writeFile(t, "source.txt", "source text")
		var stdout bytes.Buffer
		var stderr bytes.Buffer

		code := RunWithOptions([]string{"run", "example", "--config", configPath, "--input", inputPath, "--output-dir", outputDir}, &stdout, &stderr, Options{
			Catalog: fakeCatalog(t, pipeline.ModuleSpec{
				Key:      "fake/extract",
				Stage:    pipeline.StageExtract,
				Requires: []string{"chunks"},
				Provides: []string{"artifact"},
				ReferenceSlots: []contracts.ReferenceSlot{
					{Name: "roster"},
				},
			}),
			Registries:       fakeExecutionRegistries(t),
			LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
		})
		if code != 0 {
			t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
		}

		var manifest artifacts.RunManifest
		readJSONFile(t, filepath.Join(onlyChildDir(t, outputDir), "manifest.json"), &manifest)
		if len(manifest.References) != 1 {
			t.Fatalf("manifest references = %#v, want one entry", manifest.References)
		}
		if !reflect.DeepEqual(manifest.SourceDigests, []string{"sha256:source"}) {
			t.Fatalf("source digests = %#v, want source-only digest", manifest.SourceDigests)
		}

		var resolvedReferences []artifacts.ReferenceProvenance
		readJSONFile(t, filepath.Join(onlyChildDir(t, diagnosticsDir), diagnostics.ArtifactResolvedReferences), &resolvedReferences)
		if !reflect.DeepEqual(resolvedReferences, manifest.References) {
			t.Fatalf("resolved references = %#v, want manifest references %#v", resolvedReferences, manifest.References)
		}
		runManifestJSON := string(readFile(t, filepath.Join(onlyChildDir(t, diagnosticsDir), diagnostics.ArtifactRunManifest)))
		if strings.Contains(runManifestJSON, "source text") || strings.Contains(runManifestJSON, referenceText) {
			t.Fatalf("run manifest diagnostics contains raw prompt material: %s", runManifestJSON)
		}
		resolvedReferenceJSON := string(readFile(t, filepath.Join(onlyChildDir(t, diagnosticsDir), diagnostics.ArtifactResolvedReferences)))
		if strings.Contains(resolvedReferenceJSON, referenceText) || strings.Contains(resolvedReferenceJSON, "content") {
			t.Fatalf("resolved references diagnostics contains content: %s", resolvedReferenceJSON)
		}
		return manifest
	}

	first := run(t, "first roster")
	second := run(t, "second roster")

	if first.References[0].Digest == second.References[0].Digest {
		t.Fatalf("reference digests match for different bytes: %q", first.References[0].Digest)
	}
	if first.PipelineDigest != second.PipelineDigest {
		t.Fatalf("pipeline digests differ = %q vs %q, want reference bytes outside pipeline identity", first.PipelineDigest, second.PipelineDigest)
	}
}

func TestRunPipelineRejectsUnsafeOutputFileName(t *testing.T) {
	diagnosticsDir := t.TempDir()
	outputDir := t.TempDir()
	configPath := writeTestConfig(t, mvpConfigYAMLWithDiagnostics("dnd-session", diagnosticsDir, "always"))
	inputPath := writeSeriatimInput(t)
	registries := registriesWithOutput(t, unsafeOutputEncoder{})
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir}, &stdout, &stderr, Options{
		Registries:       registries,
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "output file name") {
		t.Fatalf("stderr = %q, want unsafe output file error", stderr.String())
	}
	runDir := onlyChildDir(t, diagnosticsDir)
	if got := string(readFile(t, filepath.Join(runDir, diagnostics.ArtifactErrorLog))); !strings.Contains(got, "output file name") {
		t.Fatalf("error log = %q, want unsafe output file error", got)
	}
	if _, err := os.Stat(filepath.Join(runDir, diagnostics.ArtifactRunManifest)); err != nil {
		t.Fatalf("expected diagnostics manifest after unsafe output file failure: %v", err)
	}
}

func TestRunPipelineWritesDiagnosticsArtifactsWhenDurableOutputWriteFails(t *testing.T) {
	diagnosticsDir := t.TempDir()
	configPath := writeTestConfig(t, mvpConfigYAMLWithDiagnostics("dnd-session", diagnosticsDir, "always"))
	inputPath := writeSeriatimInput(t)
	outputRootFile := writeFile(t, "not-a-directory", "occupied")
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputRootFile}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	if !strings.Contains(stderr.String(), "create output directory") {
		t.Fatalf("stderr = %q, want output directory error", stderr.String())
	}
	runDir := onlyChildDir(t, diagnosticsDir)
	for _, name := range []string{
		diagnostics.ArtifactRunManifest,
		diagnostics.ArtifactWarnings,
		diagnostics.ArtifactRunReport,
		diagnostics.ArtifactErrorLog,
	} {
		if _, err := os.Stat(filepath.Join(runDir, name)); err != nil {
			t.Fatalf("expected diagnostics artifact %q after durable output write failure: %v", name, err)
		}
	}
}

func TestRunPipelineWritesDiagnosticsArtifactsOnSuccess(t *testing.T) {
	diagnosticsDir := t.TempDir()
	outputDir := t.TempDir()
	configPath := writeTestConfig(t, mvpConfigYAMLWithDiagnostics("dnd-session", diagnosticsDir, "always"))
	inputPath := writeSeriatimInput(t)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	runDir := onlyChildDir(t, diagnosticsDir)
	for _, name := range []string{
		diagnostics.ArtifactInvocationMetadata,
		diagnostics.ArtifactEffectiveConfig,
		diagnostics.ArtifactResolvedPipeline,
		diagnostics.ArtifactRunManifest,
		diagnostics.ArtifactRunReport,
		diagnostics.ArtifactWarnings,
	} {
		if _, err := os.Stat(filepath.Join(runDir, name)); err != nil {
			t.Fatalf("expected diagnostics artifact %q: %v", name, err)
		}
	}
	report := string(readFile(t, filepath.Join(runDir, diagnostics.ArtifactRunReport)))
	if !strings.Contains(report, `"approved_count": 1`) || !strings.Contains(report, `"validation_status": "approved"`) || !strings.Contains(report, outputDir) {
		t.Fatalf("unexpected run report: %s", report)
	}
}

func TestRunPipelineWritesErrorLogAfterDiagnosticsCreation(t *testing.T) {
	diagnosticsDir := t.TempDir()
	configPath := writeTestConfig(t, mvpConfigYAMLWithDiagnostics("dnd-session", diagnosticsDir, "always"))
	inputPath := writeSeriatimInput(t)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), errors.New("factory unavailable")),
	})

	if code != 1 {
		t.Fatalf("RunWithOptions() code = %d, want 1", code)
	}
	runDir := onlyChildDir(t, diagnosticsDir)
	if got := string(readFile(t, filepath.Join(runDir, diagnostics.ArtifactErrorLog))); !strings.Contains(got, "factory unavailable") {
		t.Fatalf("error log = %q, want factory error", got)
	}
}

func TestRunPipelineRetentionNeverRemovesSuccessfulWarningFreeDiagnostics(t *testing.T) {
	diagnosticsDir := t.TempDir()
	outputDir := t.TempDir()
	configPath := writeTestConfig(t, mvpConfigYAMLWithDiagnostics("dnd-session", diagnosticsDir, "never"))
	inputPath := writeSeriatimInput(t)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if entries := childDirs(t, diagnosticsDir); len(entries) != 0 {
		t.Fatalf("diagnostics run dirs = %v, want none", entries)
	}
}

func TestRunPipelineWarningsAreDiagnosedAndReported(t *testing.T) {
	diagnosticsDir := t.TempDir()
	outputDir := t.TempDir()
	configPath := writeTestConfig(t, mvpConfigYAMLWithDiagnostics("dnd-session", diagnosticsDir, "auto"))
	inputPath := writeSeriatimInput(t)
	registries := registriesWithOutput(t, warningOutputEncoder{})
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir}, &stdout, &stderr, Options{
		Registries:       registries,
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if !strings.Contains(stderr.String(), "1 warning") {
		t.Fatalf("stderr = %q, want warning count", stderr.String())
	}
	runDir := onlyChildDir(t, diagnosticsDir)
	warnings := string(readFile(t, filepath.Join(runDir, diagnostics.ArtifactWarnings)))
	if !strings.Contains(warnings, "synthetic_warning") {
		t.Fatalf("warnings artifact = %q, want synthetic warning", warnings)
	}
}

func TestRunPipelineDiagnosticsDirFlagOverridesConfig(t *testing.T) {
	configDiagnosticsDir := t.TempDir()
	overrideDiagnosticsDir := t.TempDir()
	outputDir := t.TempDir()
	configPath := writeTestConfig(t, mvpConfigYAMLWithDiagnostics("dnd-session", configDiagnosticsDir, "always"))
	inputPath := writeSeriatimInput(t)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir, "--diagnostics-dir", overrideDiagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if entries := childDirs(t, configDiagnosticsDir); len(entries) != 0 {
		t.Fatalf("config diagnostics dir entries = %v, want none", entries)
	}
	if entries := childDirs(t, overrideDiagnosticsDir); len(entries) != 1 {
		t.Fatalf("override diagnostics dir entries = %v, want one run dir", entries)
	}
}

func TestExampleFixtureConfigValidateAndPipelinesList(t *testing.T) {
	configPath := fixturePath(t, "examples/dnd-spells.config.yml")

	t.Run("validate configured pipeline", func(t *testing.T) {
		var stdout bytes.Buffer
		var stderr bytes.Buffer

		code := RunWithOptions([]string{"config", "validate", "--config", configPath, "--pipeline", "dnd-session"}, &stdout, &stderr, Options{})

		if code != 0 {
			t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
		}
		if !strings.Contains(stdout.String(), "dnd-session") {
			t.Fatalf("stdout = %q, want pipeline ID", stdout.String())
		}
	})

	t.Run("list configured pipelines", func(t *testing.T) {
		var stdout bytes.Buffer
		var stderr bytes.Buffer

		code := RunWithOptions([]string{"pipelines", "list", "--config", configPath}, &stdout, &stderr, Options{})

		if code != 0 {
			t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
		}
		if got, want := stdout.String(), "dnd-session\n"; got != want {
			t.Fatalf("stdout = %q, want %q", got, want)
		}
	})
}

func TestExampleFixtureRunWritesExpectedJSON(t *testing.T) {
	configPath := fixturePath(t, "examples/dnd-spells.config.yml")
	inputPath := fixturePath(t, "examples/seriatim-minimal-transcript.json")
	outputDir := t.TempDir()
	diagnosticsDir := t.TempDir()
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(newFakeRunLLMClient(false), nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	runOutputDir := onlyChildDir(t, outputDir)
	if !strings.Contains(stdout.String(), runOutputDir) {
		t.Fatalf("stdout = %q, want output path %q", stdout.String(), runOutputDir)
	}

	var manifest artifacts.RunManifest
	readJSONFile(t, filepath.Join(runOutputDir, "manifest.json"), &manifest)
	if manifest.PipelineID != "dnd-session" {
		t.Fatalf("manifest pipeline ID = %q, want dnd-session", manifest.PipelineID)
	}
	if manifest.PipelineDigest == "" {
		t.Fatal("manifest pipeline digest is empty")
	}
	if manifest.ValidationStatus != "approved" {
		t.Fatalf("validation status = %q, want approved", manifest.ValidationStatus)
	}
	if len(manifest.ArtifactLanes) != 1 {
		t.Fatalf("artifact lanes = %#v, want one lane", manifest.ArtifactLanes)
	}
	extractorMetadata, ok := manifest.ArtifactLanes[0].Metadata["extractor"].(map[string]any)
	if !ok {
		t.Fatalf("extractor metadata = %#v, want object", manifest.ArtifactLanes[0].Metadata)
	}
	if extractorMetadata["prompt_id"] != "dnd.spells" || extractorMetadata["response_schema_key"] != "dnd_spells" {
		t.Fatalf("extractor metadata = %#v, want prompt/schema identifiers", extractorMetadata)
	}

	var artifactFile struct {
		ArtifactType string               `json:"artifact_type"`
		Artifacts    []artifacts.Artifact `json:"artifacts"`
	}
	readJSONFile(t, filepath.Join(runOutputDir, "artifacts", "dnd.spell_cast.json"), &artifactFile)
	if artifactFile.ArtifactType != "dnd.spell_cast" || len(artifactFile.Artifacts) != 1 {
		t.Fatalf("artifact file = %#v, want one spell artifact", artifactFile)
	}
	var payload struct {
		Caster string `json:"caster"`
		Spell  string `json:"spell"`
		Effect string `json:"effect"`
	}
	if err := json.Unmarshal(artifactFile.Artifacts[0].Payload, &payload); err != nil {
		t.Fatalf("unmarshal spell payload: %v", err)
	}
	if payload.Caster != "Aria" || payload.Spell != "Cure Wounds" || payload.Effect == "" {
		t.Fatalf("payload = %#v, want deterministic spell output", payload)
	}
	if len(artifactFile.Artifacts[0].SourceRefs) != 1 {
		t.Fatalf("source refs = %#v, want one source ref", artifactFile.Artifacts[0].SourceRefs)
	}
	ref := artifactFile.Artifacts[0].SourceRefs[0]
	if ref.SourceID != "session-alpha" || ref.StartUnitID != "seg-001" || ref.EndUnitID != "seg-001" {
		t.Fatalf("source ref = %#v, want fixture source ref", ref)
	}

	warnings := string(readFile(t, filepath.Join(runOutputDir, "warnings.json")))
	if !strings.Contains(warnings, `"warnings": []`) {
		t.Fatalf("warnings output = %s, want empty warnings", warnings)
	}
}

func TestExampleFixtureRunWithDNDScenesRecordsChunkerAndWarnings(t *testing.T) {
	configPath := writeTestConfig(t, mvpConfigYAMLWithChunk("dnd-session", scenes.Key, "dnd/spells"))
	inputPath := fixturePath(t, "examples/seriatim-minimal-transcript.json")
	outputDir := t.TempDir()
	diagnosticsDir := t.TempDir()
	client := newSceneRunLLMClient("Scene boundary was ambiguous.")
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--output-dir", outputDir, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(client, nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if client.calls != 2 {
		t.Fatalf("LLM calls = %d, want chunking and extraction calls", client.calls)
	}
	if !strings.Contains(stderr.String(), "1 warning") {
		t.Fatalf("stderr = %q, want warning count", stderr.String())
	}

	runOutputDir := onlyChildDir(t, outputDir)
	manifestBytes := readFile(t, filepath.Join(runOutputDir, "manifest.json"))
	var manifest artifacts.RunManifest
	if err := json.Unmarshal(manifestBytes, &manifest); err != nil {
		t.Fatalf("unmarshal manifest: %v", err)
	}
	if manifest.Chunker != scenes.Key {
		t.Fatalf("manifest chunker = %q, want %q", manifest.Chunker, scenes.Key)
	}
	chunkerMetadata := manifest.ModuleMetadata["chunker"]
	if chunkerMetadata == nil {
		t.Fatalf("module metadata chunker = %#v, want object", manifest.ModuleMetadata["chunker"])
	}
	wantMetadataKeys := []string{
		"prompt_id",
		"prompt_version",
		"prompt_sha256",
		"response_schema_key",
		"response_schema_id",
		"response_schema_name",
		"response_schema_version",
		"response_schema_sha256",
	}
	if len(chunkerMetadata) != len(wantMetadataKeys) {
		t.Fatalf("chunker metadata keys = %#v, want %d keys", chunkerMetadata, len(wantMetadataKeys))
	}
	for _, key := range wantMetadataKeys {
		value, ok := chunkerMetadata[key]
		if !ok {
			t.Fatalf("chunker metadata missing key %q: %#v", key, chunkerMetadata)
		}
		if _, ok := value.(string); !ok {
			t.Fatalf("chunker metadata[%q] = %#v, want string", key, value)
		}
	}
	for _, forbidden := range []string{"prompt", "schema", "source", "text", "payload", "api_key", "secret", "token"} {
		if _, ok := chunkerMetadata[forbidden]; ok {
			t.Fatalf("chunker metadata leaked forbidden key %q: %#v", forbidden, chunkerMetadata)
		}
	}
	for _, forbidden := range []string{"Source document ID:", "Aria casts Cure Wounds.", "spell_casts", "Scene boundary was ambiguous."} {
		if strings.Contains(string(manifestBytes), forbidden) {
			t.Fatalf("manifest leaked %q: %s", forbidden, manifestBytes)
		}
	}

	warnings := string(readFile(t, filepath.Join(runOutputDir, "warnings.json")))
	if !strings.Contains(warnings, "scene_boundary_caveat") || !strings.Contains(warnings, "Scene boundary was ambiguous.") {
		t.Fatalf("warnings output = %s, want scene boundary caveat", warnings)
	}
}

func TestExampleFixtureRunOnlySpells(t *testing.T) {
	configPath := fixturePath(t, "examples/dnd-spells.config.yml")
	inputPath := fixturePath(t, "examples/seriatim-minimal-transcript.json")
	outputDir := t.TempDir()
	diagnosticsDir := t.TempDir()
	client := newFakeRunLLMClient(false)
	var stdout bytes.Buffer
	var stderr bytes.Buffer

	code := RunWithOptions([]string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--only", "spells", "--output-dir", outputDir, "--diagnostics-dir", diagnosticsDir}, &stdout, &stderr, Options{
		LLMClientFactory: fakeLLMFactory(client, nil),
	})

	if code != 0 {
		t.Fatalf("RunWithOptions() code = %d, stderr=%q", code, stderr.String())
	}
	if client.calls != 1 {
		t.Fatalf("LLM calls = %d, want selected lane once", client.calls)
	}
	if _, err := os.Stat(filepath.Join(onlyChildDir(t, outputDir), "manifest.json")); err != nil {
		t.Fatalf("expected manifest output: %v", err)
	}
}

func TestExampleFixtureFailureCoverage(t *testing.T) {
	configPath := fixturePath(t, "examples/dnd-spells.config.yml")
	inputPath := fixturePath(t, "examples/seriatim-minimal-transcript.json")

	tests := []struct {
		name             string
		args             []string
		factory          LLMClientFactory
		wantCode         int
		wantStderr       string
		wantOutputStatus string
	}{
		{
			name:       "missing config",
			args:       []string{"config", "validate", "--config", filepath.Join(filepath.Dir(configPath), "missing.yml"), "--pipeline", "dnd-session"},
			wantCode:   1,
			wantStderr: "config file",
		},
		{
			name:       "unknown pipeline",
			args:       []string{"run", "missing", "--config", configPath, "--input", inputPath},
			factory:    fakeLLMFactory(newFakeRunLLMClient(false), nil),
			wantCode:   1,
			wantStderr: "not configured",
		},
		{
			name:       "invalid Seriatim input",
			args:       []string{"run", "dnd-session", "--config", configPath, "--input", fixturePath(t, "internal/cli/testdata/invalid-seriatim-empty-segments.json")},
			factory:    fakeLLMFactory(newFakeRunLLMClient(false), nil),
			wantCode:   1,
			wantStderr: "segments must not be empty",
		},
		{
			name:       "invalid only lane",
			args:       []string{"run", "dnd-session", "--config", configPath, "--input", inputPath, "--only", "missing"},
			factory:    fakeLLMFactory(newFakeRunLLMClient(false), nil),
			wantCode:   1,
			wantStderr: "selected artifact lane",
		},
		{
			name:       "fake LLM failure",
			args:       []string{"run", "dnd-session", "--config", configPath, "--input", inputPath},
			factory:    fakeLLMFactory(newErrorRunLLMClient(errors.New("completion unavailable")), nil),
			wantCode:   1,
			wantStderr: "completion unavailable",
		},
		{
			name:       "malformed LLM response",
			args:       []string{"run", "dnd-session", "--config", configPath, "--input", inputPath},
			factory:    fakeLLMFactory(newMalformedRunLLMClient(), nil),
			wantCode:   1,
			wantStderr: "spell_casts",
		},
		{
			name:             "invalid source reference rejection",
			args:             []string{"run", "dnd-session", "--config", configPath, "--input", inputPath},
			factory:          fakeLLMFactory(newFakeRunLLMClient(true), nil),
			wantCode:         0,
			wantOutputStatus: "rejected",
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			outputDir := t.TempDir()
			diagnosticsDir := t.TempDir()
			args := append([]string(nil), test.args...)
			if args[0] == "run" {
				args = append(args, "--output-dir", outputDir, "--diagnostics-dir", diagnosticsDir)
			}
			factory := test.factory
			if factory == nil {
				factory = fakeLLMFactory(newFakeRunLLMClient(false), nil)
			}
			var stdout bytes.Buffer
			var stderr bytes.Buffer

			code := RunWithOptions(args, &stdout, &stderr, Options{LLMClientFactory: factory})

			if code != test.wantCode {
				t.Fatalf("RunWithOptions() code = %d, want %d; stderr=%q", code, test.wantCode, stderr.String())
			}
			if test.wantStderr != "" && !strings.Contains(stderr.String(), test.wantStderr) {
				t.Fatalf("stderr = %q, want substring %q", stderr.String(), test.wantStderr)
			}
			if test.wantOutputStatus != "" {
				runOutputDir := onlyChildDir(t, outputDir)
				var manifest artifacts.RunManifest
				readJSONFile(t, filepath.Join(runOutputDir, "manifest.json"), &manifest)
				if manifest.ValidationStatus != test.wantOutputStatus {
					t.Fatalf("validation status = %q, want %q", manifest.ValidationStatus, test.wantOutputStatus)
				}
				rejected := string(readFile(t, filepath.Join(runOutputDir, "rejected.json")))
				if !strings.Contains(rejected, "invalid_source_ref") {
					t.Fatalf("rejected output = %s, want invalid source ref rejection", rejected)
				}
			}
		})
	}
}

func writeTestConfig(t *testing.T, content string) string {
	t.Helper()
	return writeFile(t, "config.yml", content)
}

func writeFile(t *testing.T, name string, content string) string {
	t.Helper()
	path := filepath.Join(t.TempDir(), name)
	if err := os.WriteFile(path, []byte(content), 0o644); err != nil {
		t.Fatalf("write %s: %v", name, err)
	}
	return path
}

func fixturePath(t *testing.T, name string) string {
	t.Helper()
	path := filepath.Join("..", "..", filepath.FromSlash(name))
	if _, err := os.Stat(path); err != nil {
		t.Fatalf("fixture %q is not available at %q: %v", name, path, err)
	}
	return path
}

func testConfigYAML(pipelineID string, laneIDs ...string) string {
	return testConfigYAMLForPipelines(map[string][]string{pipelineID: laneIDs})
}

func testConfigYAMLForPipelines(pipelines map[string][]string) string {
	var b strings.Builder
	b.WriteString("version: 2\n")
	b.WriteString("pipelines:\n")
	for pipelineID, laneIDs := range pipelines {
		b.WriteString("  " + pipelineID + ":\n")
		b.WriteString("    input: fake/input\n")
		b.WriteString("    artifacts:\n")
		for _, laneID := range laneIDs {
			b.WriteString("      " + laneID + ":\n")
			b.WriteString("        extract: fake/extract\n")
		}
	}
	return b.String()
}

func testConfigYAMLWithReferences(pipelineID string, laneID string, references map[string]string) string {
	var b strings.Builder
	b.WriteString("version: 2\n")
	b.WriteString("pipelines:\n")
	b.WriteString("  " + pipelineID + ":\n")
	b.WriteString("    input: fake/input\n")
	b.WriteString("    artifacts:\n")
	b.WriteString("      " + laneID + ":\n")
	b.WriteString("        extract: fake/extract\n")
	b.WriteString("        references:\n")
	keys := make([]string, 0, len(references))
	for key := range references {
		keys = append(keys, key)
	}
	sort.Strings(keys)
	for _, key := range keys {
		b.WriteString("          " + key + ": " + references[key] + "\n")
	}
	return b.String()
}

func testConfigYAMLWithPipelineReferences(pipelineID string, laneID string, references map[string]string) string {
	var b strings.Builder
	b.WriteString("version: 2\n")
	b.WriteString("pipelines:\n")
	b.WriteString("  " + pipelineID + ":\n")
	b.WriteString("    input: fake/input\n")
	b.WriteString("    references:\n")
	keys := make([]string, 0, len(references))
	for key := range references {
		keys = append(keys, key)
	}
	sort.Strings(keys)
	for _, key := range keys {
		b.WriteString("      " + key + ": " + references[key] + "\n")
	}
	b.WriteString("    artifacts:\n")
	b.WriteString("      " + laneID + ":\n")
	b.WriteString("        extract: fake/extract\n")
	return b.String()
}

func testConfigYAMLWithReferencesAndDiagnostics(pipelineID string, laneID string, diagnosticsDir string, references map[string]string) string {
	var b strings.Builder
	b.WriteString("version: 2\n")
	b.WriteString("diagnostics:\n")
	b.WriteString("  work_dir: " + diagnosticsDir + "\n")
	b.WriteString("  retention: always\n")
	b.WriteString("pipelines:\n")
	b.WriteString("  " + pipelineID + ":\n")
	b.WriteString("    input: fake/input\n")
	b.WriteString("    artifacts:\n")
	b.WriteString("      " + laneID + ":\n")
	b.WriteString("        extract: fake/extract\n")
	b.WriteString("        references:\n")
	keys := make([]string, 0, len(references))
	for key := range references {
		keys = append(keys, key)
	}
	sort.Strings(keys)
	for _, key := range keys {
		b.WriteString("          " + key + ": " + references[key] + "\n")
	}
	return b.String()
}

func mvpConfigYAML(pipelineID string, extractor string) string {
	return `version: 2
pipelines:
  ` + pipelineID + `:
    input: seriatim
    artifacts:
      spells:
        extract: ` + extractor + `
`
}

func mvpConfigYAMLWithChunk(pipelineID string, chunker string, extractor string) string {
	return `version: 2
pipelines:
  ` + pipelineID + `:
    input: seriatim
    chunk: ` + chunker + `
    artifacts:
      spells:
        extract: ` + extractor + `
`
}

func mvpConfigYAMLForLanes(pipelineID string, laneIDs ...string) string {
	var b strings.Builder
	b.WriteString("version: 2\n")
	b.WriteString("pipelines:\n")
	b.WriteString("  " + pipelineID + ":\n")
	b.WriteString("    input: seriatim\n")
	b.WriteString("    artifacts:\n")
	for _, laneID := range laneIDs {
		b.WriteString("      " + laneID + ":\n")
		b.WriteString("        extract: dnd/spells\n")
	}
	return b.String()
}

func mvpConfigYAMLWithProfileFile(pipelineID string, profileFile string) string {
	return `version: 2
scriptorium:
  profile_file: ` + profileFile + `
pipelines:
  ` + pipelineID + `:
    input: seriatim
    artifacts:
      spells:
        extract: dnd/spells
`
}

func writeScriptoriumProfileFile(t *testing.T, id string, endpoint string, model string) string {
	t.Helper()
	return writeFile(t, id+".profile.yml", `id: `+id+`
endpoint: `+endpoint+`
model: `+model+`
`)
}

func mvpConfigYAMLWithDiagnostics(pipelineID, diagnosticsDir, retention string) string {
	return `version: 2
diagnostics:
  work_dir: ` + diagnosticsDir + `
  retention: ` + retention + `
pipelines:
  ` + pipelineID + `:
    input: seriatim
    artifacts:
      spells:
        extract: dnd/spells
`
}

func writeSeriatimInput(t *testing.T) string {
	t.Helper()
	return writeFile(t, "source.json", `{
  "metadata": {
    "id": "session-alpha"
  },
  "segments": [
    {
      "id": "seg-001",
      "start": 0,
      "end": 1,
      "speaker": "Aria",
      "text": "Aria casts Cure Wounds."
    }
  ]
}`)
}

type fakeRunLLMClient struct {
	invalidSourceRef bool
	calls            int
	err              error
	payload          map[string]any
	sceneCaveat      string
}

func newFakeRunLLMClient(invalidSourceRef bool) *fakeRunLLMClient {
	return &fakeRunLLMClient{invalidSourceRef: invalidSourceRef}
}

func newErrorRunLLMClient(err error) *fakeRunLLMClient {
	return &fakeRunLLMClient{err: err}
}

func newMalformedRunLLMClient() *fakeRunLLMClient {
	return &fakeRunLLMClient{payload: map[string]any{}}
}

func newSceneRunLLMClient(caveat string) *fakeRunLLMClient {
	return &fakeRunLLMClient{sceneCaveat: caveat}
}

func (client *fakeRunLLMClient) CompleteStructured(ctx context.Context, req contracts.StructuredCompletionRequest, out any) (contracts.StructuredCompletionResponse, error) {
	client.calls++
	if client.err != nil {
		return contracts.StructuredCompletionResponse{}, client.err
	}
	if req.StageName == scenes.Key && client.payload == nil {
		payload := map[string]any{
			"scenes": []map[string]any{
				{
					"start_unit_id":       "seg-001",
					"end_unit_id":         "seg-002",
					"short_title":         "Opening spell",
					"primary_mode":        "Narrative",
					"main_participants":   []string{"Aria"},
					"summary":             "Aria casts a spell.",
					"boundary_note":       "The provided source units form one scene.",
					"boundary_confidence": "High",
				},
			},
			"boundary_caveats": []string{},
		}
		if client.sceneCaveat != "" {
			payload["boundary_caveats"] = []string{client.sceneCaveat}
		}
		encoded, err := json.Marshal(payload)
		if err != nil {
			return contracts.StructuredCompletionResponse{}, err
		}
		if err := json.Unmarshal(encoded, out); err != nil {
			return contracts.StructuredCompletionResponse{}, err
		}
		return contracts.StructuredCompletionResponse{Content: encoded}, nil
	}
	startUnitID := "seg-001"
	if client.invalidSourceRef {
		startUnitID = "missing-segment"
	}
	payload := client.payload
	if payload == nil {
		payload = map[string]any{
			"spell_casts": []map[string]any{
				{
					"caster":                "Aria",
					"spell":                 "Cure Wounds",
					"effect":                "Heals a wounded ally.",
					"narrative_description": "Aria casts Cure Wounds.",
					"source_refs": []map[string]string{
						{
							"source_id":     "session-alpha",
							"start_unit_id": startUnitID,
							"end_unit_id":   "seg-001",
						},
					},
				},
			},
		}
	}
	encoded, err := json.Marshal(payload)
	if err != nil {
		return contracts.StructuredCompletionResponse{}, err
	}
	if err := json.Unmarshal(encoded, out); err != nil {
		return contracts.StructuredCompletionResponse{}, err
	}
	return contracts.StructuredCompletionResponse{Content: encoded}, nil
}

func fakeLLMFactory(client contracts.StructuredLLMClient, err error) LLMClientFactory {
	return func(ctx context.Context, cfg config.Config, profileID string) (contracts.StructuredLLMClient, []artifacts.LLMProfileManifest, error) {
		if err != nil {
			return nil, nil, err
		}
		return client, []artifacts.LLMProfileManifest{{ID: strings.TrimSpace(profileID)}}, nil
	}
}

type recordingLLMFactory struct {
	client     contracts.StructuredLLMClient
	profileIDs []string
}

func (factory *recordingLLMFactory) build(ctx context.Context, cfg config.Config, profileID string) (contracts.StructuredLLMClient, []artifacts.LLMProfileManifest, error) {
	factory.profileIDs = append(factory.profileIDs, strings.TrimSpace(profileID))
	return factory.client, []artifacts.LLMProfileManifest{{ID: strings.TrimSpace(profileID)}}, nil
}

type unsafeOutputEncoder struct{}

func (unsafeOutputEncoder) Key() string {
	return "json"
}

func (unsafeOutputEncoder) Encode(ctx context.Context, req contracts.OutputRequest) (contracts.OutputResult, error) {
	return contracts.OutputResult{
		Files: []contracts.OutputFile{
			{
				Name:        "../escape.json",
				ContentType: "application/json",
				Bytes:       []byte("{}\n"),
			},
		},
	}, nil
}

type warningOutputEncoder struct{}

func (warningOutputEncoder) Key() string {
	return "json"
}

func (warningOutputEncoder) Encode(ctx context.Context, req contracts.OutputRequest) (contracts.OutputResult, error) {
	result, err := jsonoutput.New().Encode(ctx, req)
	if err != nil {
		return contracts.OutputResult{}, err
	}
	result.Warnings = append(result.Warnings, contracts.Warning{
		Scope:      "output",
		ReasonCode: "synthetic_warning",
		Message:    "synthetic output warning",
	})
	return result, nil
}

func registriesWithOutput(t *testing.T, encoder contracts.OutputEncoder) pipeline.Registries {
	t.Helper()
	registries, err := productionRegistries()
	if err != nil {
		t.Fatalf("productionRegistries: %v", err)
	}
	outputs := pipeline.NewOutputEncoderRegistry()
	if err := outputs.RegisterWithSpec(jsonoutput.ModuleSpec(), func() (contracts.OutputEncoder, error) {
		return encoder, nil
	}); err != nil {
		t.Fatalf("register test output encoder: %v", err)
	}
	registries.Outputs = outputs
	return registries
}

func fakeExecutionRegistries(t *testing.T) pipeline.Registries {
	t.Helper()
	inputs := pipeline.NewInputAdapterRegistry()
	chunkers := pipeline.NewChunkerRegistry()
	extractors := pipeline.NewExtractorRegistry()
	mergers := pipeline.NewMergerRegistry()
	normalizers := pipeline.NewNormalizerRegistry()
	outputs := pipeline.NewOutputEncoderRegistry()

	if err := inputs.RegisterWithSpec(pipeline.ModuleSpec{Key: "fake/input", Stage: pipeline.StageInput, Provides: []string{"source"}}, func() (contracts.InputAdapter, error) {
		return fakeRunInputAdapter{}, nil
	}); err != nil {
		t.Fatalf("register fake input: %v", err)
	}
	if err := chunkers.RegisterWithSpec(pipeline.ModuleSpec{Key: "generic", Stage: pipeline.StageChunk, Requires: []string{"source"}, Provides: []string{"chunks"}}, func() (contracts.Chunker, error) {
		return fakeRunChunker{}, nil
	}); err != nil {
		t.Fatalf("register fake chunker: %v", err)
	}
	if err := extractors.RegisterWithSpec(pipeline.ModuleSpec{
		Key:      "fake/extract",
		Stage:    pipeline.StageExtract,
		Requires: []string{"chunks"},
		Provides: []string{"artifact"},
		ReferenceSlots: []contracts.ReferenceSlot{
			{Name: "roster"},
		},
	}, func() (contracts.Extractor, error) {
		return fakeRunExtractor{}, nil
	}); err != nil {
		t.Fatalf("register fake extractor: %v", err)
	}
	if err := mergers.RegisterWithSpec(pipeline.ModuleSpec{Key: "appendorder", Stage: pipeline.StageMerge, Requires: []string{"artifact"}, Provides: []string{"merged"}}, func() (contracts.Merger, error) {
		return fakeRunMerger{}, nil
	}); err != nil {
		t.Fatalf("register fake merger: %v", err)
	}
	if err := normalizers.RegisterWithSpec(pipeline.ModuleSpec{Key: "noop", Stage: pipeline.StageNormalize, Requires: []string{"merged"}, Provides: []string{"normalized"}}, func() (contracts.Normalizer, error) {
		return fakeRunNormalizer{}, nil
	}); err != nil {
		t.Fatalf("register fake normalizer: %v", err)
	}
	if err := jsonoutput.Register(outputs); err != nil {
		t.Fatalf("register json output: %v", err)
	}

	return pipeline.Registries{
		Inputs:      inputs,
		Chunkers:    chunkers,
		Extractors:  extractors,
		Mergers:     mergers,
		Normalizers: normalizers,
		Outputs:     outputs,
	}
}

type fakeRunInputAdapter struct{}

func (fakeRunInputAdapter) Key() string {
	return "fake/input"
}

func (fakeRunInputAdapter) Parse(ctx context.Context, req contracts.ParseRequest) (*source.SourceDocument, error) {
	return &source.SourceDocument{
		ID:     "source",
		Kind:   "text",
		Format: "test",
		Digest: "sha256:source",
		Units: []source.SourceUnit{
			{ID: "unit-1", Kind: "text", Text: string(req.Raw)},
		},
	}, nil
}

type fakeRunChunker struct{}

func (fakeRunChunker) Key() string {
	return "generic"
}

func (fakeRunChunker) ReferenceSlots() []contracts.ReferenceSlot {
	return nil
}

func (fakeRunChunker) Chunk(ctx context.Context, req contracts.ChunkRequest) (contracts.ChunkResult, error) {
	return contracts.ChunkResult{
		Chunks: []contracts.SourceChunk{
			{ID: "chunk-1", SourceID: req.Source.ID, Index: 0, Units: req.Source.Units},
		},
	}, nil
}

type fakeRunExtractor struct{}

func (fakeRunExtractor) Key() string {
	return "fake/extract"
}

func (fakeRunExtractor) ArtifactType() string {
	return "fake.artifact"
}

func (fakeRunExtractor) SchemaVersion() string {
	return "v1"
}

func (fakeRunExtractor) ReferenceSlots() []contracts.ReferenceSlot {
	return []contracts.ReferenceSlot{{Name: "roster"}}
}

func (fakeRunExtractor) Validators() []contracts.Validator {
	return nil
}

func (fakeRunExtractor) Extract(ctx context.Context, req contracts.ExtractionRequest) (contracts.ExtractionResult, error) {
	return contracts.ExtractionResult{
		Candidates: []artifacts.ArtifactCandidate{
			{
				Payload: []byte(`{"value":true}`),
				SourceRefs: []source.SourceRef{
					{SourceID: "source", StartUnitID: "unit-1", EndUnitID: "unit-1"},
				},
			},
		},
	}, nil
}

type fakeRunMerger struct{}

func (fakeRunMerger) Key() string {
	return "appendorder"
}

func (fakeRunMerger) Merge(ctx context.Context, req contracts.MergeRequest) (contracts.MergeResult, error) {
	var candidates []artifacts.ArtifactCandidate
	for _, chunkArtifacts := range req.ChunkArtifacts {
		candidates = append(candidates, chunkArtifacts.Candidates...)
	}
	return contracts.MergeResult{Candidates: candidates}, nil
}

type fakeRunNormalizer struct{}

func (fakeRunNormalizer) Key() string {
	return "noop"
}

func (fakeRunNormalizer) ReferenceSlots() []contracts.ReferenceSlot {
	return nil
}

func (fakeRunNormalizer) Normalize(ctx context.Context, req contracts.NormalizeRequest) (contracts.NormalizeResult, error) {
	return contracts.NormalizeResult{Candidates: append([]artifacts.ArtifactCandidate(nil), req.Candidates...)}, nil
}

func onlyChildDir(t *testing.T, root string) string {
	t.Helper()
	children := childDirs(t, root)
	if len(children) != 1 {
		t.Fatalf("child dirs under %q = %v, want one", root, children)
	}
	return children[0]
}

func childDirs(t *testing.T, root string) []string {
	t.Helper()
	entries, err := os.ReadDir(root)
	if err != nil {
		if os.IsNotExist(err) {
			return nil
		}
		t.Fatalf("read dir %q: %v", root, err)
	}
	var dirs []string
	for _, entry := range entries {
		if entry.IsDir() {
			dirs = append(dirs, filepath.Join(root, entry.Name()))
		}
	}
	return dirs
}

func readFile(t *testing.T, path string) []byte {
	t.Helper()
	data, err := os.ReadFile(path)
	if err != nil {
		t.Fatalf("read %q: %v", path, err)
	}
	return data
}

func readJSONFile(t *testing.T, path string, out any) {
	t.Helper()
	if err := json.Unmarshal(readFile(t, path), out); err != nil {
		t.Fatalf("unmarshal %q: %v", path, err)
	}
}

func readResolvedPipeline(t *testing.T, diagnosticsDir string) pipeline.ResolvedPipeline {
	t.Helper()
	runDir := onlyChildDir(t, diagnosticsDir)
	var resolved pipeline.ResolvedPipeline
	readJSONFile(t, filepath.Join(runDir, diagnostics.ArtifactResolvedPipeline), &resolved)
	return resolved
}

func resolvedArtifactLane(t *testing.T, resolved pipeline.ResolvedPipeline, laneID string) pipeline.ResolvedArtifactLane {
	t.Helper()
	for _, lane := range resolved.ArtifactLanes {
		if lane.ID == laneID {
			return lane
		}
	}
	t.Fatalf("lane %q not found in resolved pipeline", laneID)
	return pipeline.ResolvedArtifactLane{}
}

func assertNoTemporaryFiles(t *testing.T, root string) {
	t.Helper()
	if err := filepath.WalkDir(root, func(path string, entry os.DirEntry, err error) error {
		if err != nil {
			return err
		}
		if strings.Contains(entry.Name(), ".tmp-") {
			t.Fatalf("temporary file remains after success: %s", path)
		}
		return nil
	}); err != nil {
		t.Fatalf("walk output dir %q: %v", root, err)
	}
}

func fakeCatalog(t *testing.T, overrides ...pipeline.ModuleSpec) pipeline.ModuleCatalog {
	t.Helper()
	inputs := pipeline.NewInputAdapterRegistry()
	chunkers := pipeline.NewChunkerRegistry()
	extractors := pipeline.NewExtractorRegistry()
	mergers := pipeline.NewMergerRegistry()
	normalizers := pipeline.NewNormalizerRegistry()
	validators := pipeline.NewValidatorRegistry()
	outputs := pipeline.NewOutputEncoderRegistry()

	specs := map[string]pipeline.ModuleSpec{
		"fake/input":   {Key: "fake/input", Stage: pipeline.StageInput, Provides: []string{"source"}},
		"generic":      {Key: "generic", Stage: pipeline.StageChunk, Requires: []string{"source"}, Provides: []string{"chunks"}},
		"fake/extract": {Key: "fake/extract", Stage: pipeline.StageExtract, Requires: []string{"chunks"}, Provides: []string{"artifact"}},
		"appendorder":  {Key: "appendorder", Stage: pipeline.StageMerge, Requires: []string{"artifact"}, Provides: []string{"merged"}},
		"noop":         {Key: "noop", Stage: pipeline.StageNormalize, Requires: []string{"merged"}, Provides: []string{"normalized"}},
		"json":         {Key: "json", Stage: pipeline.StageOutput, Requires: []string{"normalized"}},
	}
	for _, override := range overrides {
		specs[override.Key] = override
	}

	mustRegisterInput(t, inputs, specs["fake/input"])
	mustRegisterChunker(t, chunkers, specs["generic"])
	mustRegisterExtractor(t, extractors, specs["fake/extract"])
	mustRegisterMerger(t, mergers, specs["appendorder"])
	mustRegisterNormalizer(t, normalizers, specs["noop"])
	mustRegisterOutput(t, outputs, specs["json"])

	return pipeline.ModuleCatalog{
		Inputs:      inputs,
		Chunkers:    chunkers,
		Extractors:  extractors,
		Mergers:     mergers,
		Normalizers: normalizers,
		Validators:  validators,
		Outputs:     outputs,
	}
}

func mustRegisterInput(t *testing.T, registry *pipeline.InputAdapterRegistry, spec pipeline.ModuleSpec) {
	t.Helper()
	if err := registry.RegisterWithSpec(spec, func() (contracts.InputAdapter, error) { return nil, nil }); err != nil {
		t.Fatalf("register input: %v", err)
	}
}

func mustRegisterChunker(t *testing.T, registry *pipeline.ChunkerRegistry, spec pipeline.ModuleSpec) {
	t.Helper()
	if err := registry.RegisterWithSpec(spec, func() (contracts.Chunker, error) { return nil, nil }); err != nil {
		t.Fatalf("register chunker: %v", err)
	}
}

func mustRegisterExtractor(t *testing.T, registry *pipeline.ExtractorRegistry, spec pipeline.ModuleSpec) {
	t.Helper()
	if err := registry.RegisterWithSpec(spec, func() (contracts.Extractor, error) { return nil, nil }); err != nil {
		t.Fatalf("register extractor: %v", err)
	}
}

func mustRegisterMerger(t *testing.T, registry *pipeline.MergerRegistry, spec pipeline.ModuleSpec) {
	t.Helper()
	if err := registry.RegisterWithSpec(spec, func() (contracts.Merger, error) { return nil, nil }); err != nil {
		t.Fatalf("register merger: %v", err)
	}
}

func mustRegisterNormalizer(t *testing.T, registry *pipeline.NormalizerRegistry, spec pipeline.ModuleSpec) {
	t.Helper()
	if err := registry.RegisterWithSpec(spec, func() (contracts.Normalizer, error) { return nil, nil }); err != nil {
		t.Fatalf("register normalizer: %v", err)
	}
}

func mustRegisterOutput(t *testing.T, registry *pipeline.OutputEncoderRegistry, spec pipeline.ModuleSpec) {
	t.Helper()
	if err := registry.RegisterWithSpec(spec, func() (contracts.OutputEncoder, error) { return nil, nil }); err != nil {
		t.Fatalf("register output: %v", err)
	}
}

func mapLookup(values map[string]string) func(string) (string, bool) {
	return func(key string) (string, bool) {
		value, ok := values[key]
		return value, ok
	}
}