feat(cli): discover ThothII projects and installations

tools/tht/cmd/tht/main.go

@@ -22,7 +22,10 @@ import (
 	"github.com/aritmolab/thothii/tools/tht/internal/workspaceops"
 )
 
-const usage = `Usage: tht --installation <absolute-path>/thothii-installation.yaml <command>
+const usage = `Usage: tht [--installation <absolute-path>/thothii-installation.yaml] <command>
+
+When --installation is omitted, tht uses THOTHII_INSTALLATION or discovers one valid
+descriptor in the current project tree.
 
 Commands:
   status              Show the Compose service state.
@@ -78,6 +81,23 @@ func run(ctx context.Context, args []string, stdout, stderr io.Writer) int {
 		fmt.Fprintf(stderr, "tht: %s\n\n%s", err, usage)
 		return 2
 	}
+	if command == "help" && len(commandArgs) == 0 {
+		fmt.Fprint(stdout, usage)
+		return 0
+	}
+	if (command == "version" || command == "setup") && len(commandArgs) == 0 {
+		return commandUsageError(stderr, fmt.Sprintf("unknown command %q", command))
+	}
+	workingDirectory, err := os.Getwd()
+	if err != nil {
+		fmt.Fprintf(stderr, "tht: current directory is unavailable: %s\n", output.Sanitize(err.Error(), nil))
+		return 2
+	}
+	installationPath, err = config.Resolve(installationPath, os.Getenv, workingDirectory)
+	if err != nil {
+		fmt.Fprintf(stderr, "tht: %s\n", output.Sanitize(err.Error(), nil))
+		return 2
+	}
 	installation, err := config.Load(installationPath)
 	if err != nil {
 		fmt.Fprintf(stderr, "tht: %s\n", output.Sanitize(err.Error(), nil))
@@ -588,13 +608,29 @@ func piFailure(stderr io.Writer, err error, secretValues []string) int {
 }
 
 func parseArgs(args []string) (string, string, []string, error) {
-	if len(args) < 3 || args[0] != "--installation" {
-		return "", "", nil, errors.New("--installation <absolute-path> is required before the command")
+	var installation string
+	commandArgs := make([]string, 0, len(args))
+	for index := 0; index < len(args); index++ {
+		if args[index] != "--installation" {
+			commandArgs = append(commandArgs, args[index])
+			continue
+		}
+		if index+1 >= len(args) {
+			return "", "", nil, errors.New("--installation requires an absolute path")
+		}
+		if installation != "" {
+			return "", "", nil, errors.New("--installation may be supplied once")
+		}
+		installation = args[index+1]
+		if !filepath.IsAbs(installation) {
+			return "", "", nil, errors.New("--installation must be an absolute path")
+		}
+		index++
 	}
-	if !filepath.IsAbs(args[1]) {
-		return "", "", nil, errors.New("--installation must be an absolute path")
+	if len(commandArgs) == 0 {
+		return "", "", nil, errors.New("a command is required")
 	}
-	return args[1], args[2], args[3:], nil
+	return installation, commandArgs[0], commandArgs[1:], nil
 }
 
 func logsArgs(args []string) ([]string, error) {

tools/tht/cmd/tht/main_test.go

@@ -74,6 +74,31 @@ func TestRootCommandIdentity(t *testing.T) {
 	}
 }
 
+func TestBootstrapCommandsDoNotRequireAnInstallationDescriptor(t *testing.T) {
+	projectRoot := newProjectWithoutInstallation(t)
+	previousDirectory, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Chdir(filepath.Join(projectRoot, "frontend")); err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		if restoreErr := os.Chdir(previousDirectory); restoreErr != nil {
+			t.Errorf("restore working directory: %v", restoreErr)
+		}
+	})
+	t.Setenv("THOTHII_INSTALLATION", "")
+
+	for _, args := range [][]string{nil, {"help"}, {"version"}, {"setup"}} {
+		var stdout, stderr bytes.Buffer
+		_ = run(context.Background(), args, &stdout, &stderr)
+		if output := stdout.String() + stderr.String(); strings.Contains(output, "installation descriptor") {
+			t.Fatalf("run(%v) required a descriptor: %q", args, output)
+		}
+	}
+}
+
 // Catches interactive configuration prompts that use retired model-only data instead of the
 // provider, model, and reasoning choices supplied by the dedicated Pi Management API.
 func TestResolvePiConfigureUsesNumberedClosedChoicesOnlyForTTY(t *testing.T) {
@@ -126,6 +151,35 @@ func TestLogsRejectsFollowAndOtherArguments(t *testing.T) {
 	}
 }
 
+func TestParseArgsMakesInstallationOptionalAndAcceptsOverrideAfterCommand(t *testing.T) {
+	if installation, command, commandArgs, err := parseArgs([]string{"pi", "status"}); err != nil || installation != "" || command != "pi" || strings.Join(commandArgs, " ") != "status" {
+		t.Fatalf("implicit parse = %q, %q, %v, %v", installation, command, commandArgs, err)
+	}
+
+	want := "/tmp/thothii-installation.yaml"
+	installation, command, commandArgs, err := parseArgs([]string{"pi", "update", "--installation", want})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if installation != want || command != "pi" || strings.Join(commandArgs, " ") != "update" {
+		t.Fatalf("trailing override parse = %q, %q, %v", installation, command, commandArgs)
+	}
+}
+
+func TestRunPiStatusUsesInstallationEnvironmentWithoutFlag(t *testing.T) {
+	fixture := newCLIFixture(t, "THT_LLM_URL=https://llm.example.invalid\n")
+	fixture.setEnvironment(t)
+	t.Setenv("THOTHII_INSTALLATION", fixture.installationPath)
+
+	var stdout, stderr bytes.Buffer
+	if code := run(context.Background(), []string{"pi", "status"}, &stdout, &stderr); code != 0 {
+		t.Fatalf("run() exit code = %d, stderr = %s", code, stderr.String())
+	}
+	if stdout.String() != "Pi version: 0.80.3\n" {
+		t.Fatalf("stdout = %q, want image-bundled Pi version", stdout.String())
+	}
+}
+
 func TestUsageDocumentsClosedConfigureUpdateSourcesRestartAndMaintenanceRecovery(t *testing.T) {
 	if strings.Contains(usage, "--follow") {
 		t.Fatal("usage still advertises unbounded log following")
@@ -1078,6 +1132,20 @@ type cliFixture struct {
 	envTemplate      string
 }
 
+func newProjectWithoutInstallation(t *testing.T) string {
+	t.Helper()
+	root := t.TempDir()
+	for _, directory := range []string{"backend", "frontend", "harness", "tools", "deploy", ".git"} {
+		if err := os.MkdirAll(filepath.Join(root, directory), 0o755); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := os.WriteFile(filepath.Join(root, "compose.yaml"), []byte("services: {}\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	return root
+}
+
 func newCLIFixture(t *testing.T, envTemplate string) cliFixture {
 	t.Helper()
 	temporaryRoot, err := filepath.EvalSymlinks(os.TempDir())

tools/tht/internal/config/discovery.go

@@ -0,0 +1,144 @@
+package config
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	"github.com/aritmolab/thothii/tools/tht/internal/project"
+)
+
+// Resolve selects one installation descriptor without searching arbitrary descendants.
+// Explicit paths and THOTHII_INSTALLATION are authoritative; automatic discovery considers
+// only the current directory, its parents, and immediate deploy/* descriptors.
+func Resolve(explicit string, environment func(string) string, workingDirectory string) (string, error) {
+	if explicit != "" {
+		return validateSelectedPath(explicit, "--installation")
+	}
+	if environment != nil {
+		if value := strings.TrimSpace(environment("THOTHII_INSTALLATION")); value != "" {
+			return validateSelectedPath(value, "THOTHII_INSTALLATION")
+		}
+	}
+
+	friendlyRoot, err := filepath.Abs(workingDirectory)
+	if err != nil {
+		return "", errors.New("installation discovery could not resolve the current directory")
+	}
+	info, err := os.Stat(friendlyRoot)
+	if err != nil || !info.IsDir() {
+		return "", errors.New("installation discovery could not read the current directory")
+	}
+	root, err := project.Discover(friendlyRoot)
+	if err != nil {
+		return "", fmt.Errorf("installation descriptor not found from %s; run tht setup or use --installation <absolute-path>/%s", filepath.Clean(friendlyRoot), installationFileName)
+	}
+	start, err := filepath.EvalSymlinks(friendlyRoot)
+	if err != nil {
+		return "", errors.New("installation discovery could not resolve the current directory")
+	}
+
+	candidates := make(map[string]string)
+	for directory := filepath.Clean(start); ; directory = filepath.Dir(directory) {
+		for _, path := range discoveryCandidates(directory) {
+			if hasArtifactsComponent(path) {
+				continue
+			}
+			info, statErr := os.Stat(path)
+			if statErr != nil || !info.Mode().IsRegular() {
+				continue
+			}
+			if _, loadErr := Load(path); loadErr != nil {
+				continue
+			}
+			canonical := canonicalPath(path)
+			candidates[canonical] = path
+		}
+		if directory == root.Path {
+			break
+		}
+		parent := filepath.Dir(directory)
+		if parent == directory {
+			break
+		}
+	}
+
+	paths := make([]string, 0, len(candidates))
+	for _, path := range candidates {
+		paths = append(paths, path)
+	}
+	sort.Strings(paths)
+	switch len(paths) {
+	case 1:
+		return paths[0], nil
+	case 0:
+		return "", fmt.Errorf("installation descriptor not found from %s; run tht setup or use --installation <absolute-path>/%s", filepath.Clean(friendlyRoot), installationFileName)
+	default:
+		return "", fmt.Errorf("multiple valid installation descriptors found: %s; use --installation <absolute-path>/%s", formatCandidates(paths, root.Path), installationFileName)
+	}
+}
+
+func formatCandidates(paths []string, root string) string {
+	formatted := make([]string, 0, len(paths))
+	for _, path := range paths {
+		id := filepath.Base(filepath.Dir(path))
+		relative, err := filepath.Rel(filepath.Join(root, "deploy"), path)
+		if err == nil {
+			parts := strings.Split(filepath.Clean(relative), string(filepath.Separator))
+			if len(parts) == 2 && parts[1] == installationFileName {
+				id = parts[0]
+			}
+		}
+		formatted = append(formatted, fmt.Sprintf("%s: %s", id, path))
+	}
+	return strings.Join(formatted, ", ")
+}
+
+func validateSelectedPath(path, source string) (string, error) {
+	if !filepath.IsAbs(path) {
+		return "", fmt.Errorf("%s must be an absolute path", source)
+	}
+	path = filepath.Clean(path)
+	if filepath.Base(path) != installationFileName {
+		return "", fmt.Errorf("%s must name %s", source, installationFileName)
+	}
+	if _, err := Load(path); err != nil {
+		return "", fmt.Errorf("%s is unavailable: %w", source, err)
+	}
+	return path, nil
+}
+
+func discoveryCandidates(directory string) []string {
+	candidates := []string{filepath.Join(directory, installationFileName)}
+	deploy := filepath.Join(directory, "deploy")
+	entries, err := os.ReadDir(deploy)
+	if err != nil {
+		return candidates
+	}
+	for _, entry := range entries {
+		if entry.IsDir() {
+			candidates = append(candidates, filepath.Join(deploy, entry.Name(), installationFileName))
+		}
+	}
+	sort.Strings(candidates)
+	return candidates
+}
+
+func canonicalPath(path string) string {
+	if resolved, err := filepath.EvalSymlinks(path); err == nil {
+		return filepath.Clean(resolved)
+	}
+	return filepath.Clean(path)
+}
+
+func hasArtifactsComponent(path string) bool {
+	for _, component := range strings.Split(filepath.Clean(path), string(filepath.Separator)) {
+		if component == ".artifacts" {
+			return true
+		}
+	}
+	return false
+}

tools/tht/internal/config/discovery_test.go

@@ -0,0 +1,150 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestResolveExplicitPathWinsOverEnvironmentAndDiscovery(t *testing.T) {
+	root := t.TempDir()
+	writeDiscoverableProject(t, root)
+	first := writeDiscoverableInstallation(t, root, filepath.Join(root, "first"))
+	second := writeDiscoverableInstallation(t, root, filepath.Join(root, "second"))
+
+	got, err := Resolve(first, func(string) string { return second }, root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != first {
+		t.Fatalf("Resolve() = %q, want explicit %q", got, first)
+	}
+}
+
+func TestResolveUsesEnvironmentBeforeAutomaticDiscovery(t *testing.T) {
+	root := t.TempDir()
+	writeDiscoverableProject(t, root)
+	writeDiscoverableInstallation(t, root, filepath.Join(root, "deploy", "one"))
+	environmentPath := writeDiscoverableInstallation(t, root, filepath.Join(root, "deploy", "two"))
+
+	got, err := Resolve("", func(name string) string {
+		if name == "THOTHII_INSTALLATION" {
+			return environmentPath
+		}
+		return ""
+	}, root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != environmentPath {
+		t.Fatalf("Resolve() = %q, want environment %q", got, environmentPath)
+	}
+}
+
+func TestResolveFindsDeployDescriptorFromNestedDirectory(t *testing.T) {
+	root := t.TempDir()
+	writeDiscoverableProject(t, root)
+	want := writeDiscoverableInstallation(t, root, filepath.Join(root, "deploy", "psd"))
+	nested := filepath.Join(root, "tools", "nested")
+	if err := os.MkdirAll(nested, 0o755); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := Resolve("", func(string) string { return "" }, nested)
+	if err != nil {
+		t.Fatal(err)
+	}
+	canonicalWant, err := filepath.EvalSymlinks(want)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got != canonicalWant {
+		t.Fatalf("Resolve() = %q, want canonical %q", got, canonicalWant)
+	}
+}
+
+func TestResolveIgnoresArtifactsAndRejectsAmbiguousValidCandidates(t *testing.T) {
+	root := t.TempDir()
+	writeDiscoverableProject(t, root)
+	artifacts := writeDiscoverableInstallation(t, root, filepath.Join(root, ".artifacts", "run"))
+	_ = artifacts
+	first := writeDiscoverableInstallation(t, root, filepath.Join(root, "deploy", "one"))
+	second := writeDiscoverableInstallation(t, root, filepath.Join(root, "deploy", "two"))
+
+	_, err := Resolve("", func(string) string { return "" }, root)
+	if err == nil || !strings.Contains(err.Error(), "multiple") || !strings.Contains(err.Error(), "one") || !strings.Contains(err.Error(), "two") || !strings.Contains(err.Error(), first) || !strings.Contains(err.Error(), second) {
+		t.Fatalf("Resolve() error = %v, want ambiguity naming valid candidates", err)
+	}
+}
+
+func TestResolveDoesNotSelectAnArtifactsDescriptor(t *testing.T) {
+	root := t.TempDir()
+	writeDiscoverableProject(t, root)
+	writeDiscoverableInstallation(t, root, filepath.Join(root, ".artifacts", "run"))
+
+	_, err := Resolve("", func(string) string { return "" }, root)
+	if err == nil || !strings.Contains(err.Error(), "descriptor not found") {
+		t.Fatalf("Resolve() error = %v, want artifacts candidate excluded", err)
+	}
+}
+
+func TestResolveReportsNoCandidateWithOverrideGuidance(t *testing.T) {
+	root := t.TempDir()
+	writeDiscoverableProject(t, root)
+
+	_, err := Resolve("", func(string) string { return "" }, root)
+	if err == nil || !strings.Contains(err.Error(), "tht setup") || !strings.Contains(err.Error(), "--installation") {
+		t.Fatalf("Resolve() error = %v, want setup and override guidance", err)
+	}
+}
+
+func TestResolveDoesNotSearchAboveTheDiscoveredProjectRoot(t *testing.T) {
+	container := t.TempDir()
+	root := filepath.Join(container, "thothii")
+	writeDiscoverableProject(t, root)
+	outside := writeDiscoverableInstallation(t, root, container)
+
+	_, err := Resolve("", func(string) string { return "" }, filepath.Join(root, "frontend"))
+	if err == nil || !strings.Contains(err.Error(), "tht setup") || strings.Contains(err.Error(), outside) {
+		t.Fatalf("Resolve() error = %v, want project-bounded setup guidance", err)
+	}
+}
+
+func writeDiscoverableProject(t *testing.T, root string) {
+	t.Helper()
+	for _, path := range []string{"backend", "frontend", "harness", "tools", "deploy"} {
+		if err := os.MkdirAll(filepath.Join(root, path), 0o755); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := os.MkdirAll(filepath.Join(root, ".git"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(root, "compose.yaml"), []byte("services: {}\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(root, "deploy", "compose.local.yaml"), []byte("services: {}\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(root, "operator.env"), nil, 0o600); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func writeDiscoverableInstallation(t *testing.T, projectRoot, directory string) string {
+	t.Helper()
+	if err := os.MkdirAll(directory, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	envFile := filepath.Join(directory, "operator.env")
+	if err := os.WriteFile(envFile, nil, 0o600); err != nil {
+		t.Fatal(err)
+	}
+	installationPath := filepath.Join(directory, "thothii-installation.yaml")
+	contents := "profile: local\nprojectDirectory: " + projectRoot + "\nenvFile: " + envFile + "\n"
+	if err := os.WriteFile(installationPath, []byte(contents), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	return installationPath
+}

tools/tht/internal/project/discovery.go

@@ -0,0 +1,79 @@
+// Package project finds a ThothII source checkout from a directory within it.
+package project
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// Root identifies one ThothII checkout. Path is resolved for stable identity across symlinks.
+type Root struct {
+	Path       string
+	IsWorktree bool
+}
+
+// Discover walks from start towards the filesystem root until it finds the ThothII source-layout
+// contract. A regular .git file identifies a linked Git worktree; a .git directory identifies a
+// main checkout.
+func Discover(start string) (Root, error) {
+	if start == "" {
+		return Root{}, errors.New("ThothII project root could not be discovered from an empty directory")
+	}
+	abs, err := filepath.Abs(start)
+	if err != nil {
+		return Root{}, errors.New("ThothII project root could not resolve the current directory")
+	}
+	resolved, err := filepath.EvalSymlinks(abs)
+	if err != nil {
+		return Root{}, fmt.Errorf("ThothII project root could not resolve %s", filepath.Clean(abs))
+	}
+	info, err := os.Stat(resolved)
+	if err != nil || !info.IsDir() {
+		return Root{}, fmt.Errorf("ThothII project root could not read %s", filepath.Clean(abs))
+	}
+
+	for directory := filepath.Clean(resolved); ; directory = filepath.Dir(directory) {
+		if isRoot(directory) {
+			return Root{Path: directory, IsWorktree: isLinkedWorktree(directory)}, nil
+		}
+		parent := filepath.Dir(directory)
+		if parent == directory {
+			break
+		}
+	}
+	return Root{}, fmt.Errorf("ThothII project root not found from %s", filepath.Clean(abs))
+}
+
+func isRoot(directory string) bool {
+	if !isGitMarker(filepath.Join(directory, ".git")) || !isRegularFile(filepath.Join(directory, "compose.yaml")) || !isDirectory(filepath.Join(directory, "deploy")) {
+		return false
+	}
+	for _, name := range []string{"backend", "frontend", "harness", "tools"} {
+		if !isDirectory(filepath.Join(directory, name)) {
+			return false
+		}
+	}
+	return true
+}
+
+func isLinkedWorktree(directory string) bool {
+	info, err := os.Lstat(filepath.Join(directory, ".git"))
+	return err == nil && info.Mode().IsRegular()
+}
+
+func isGitMarker(path string) bool {
+	info, err := os.Lstat(path)
+	return err == nil && (info.IsDir() || info.Mode().IsRegular())
+}
+
+func isRegularFile(path string) bool {
+	info, err := os.Stat(path)
+	return err == nil && info.Mode().IsRegular()
+}
+
+func isDirectory(path string) bool {
+	info, err := os.Stat(path)
+	return err == nil && info.IsDir()
+}

tools/tht/internal/project/discovery_test.go

@@ -0,0 +1,100 @@
+package project
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestDiscoverFindsRepositoryRootFromNestedDirectory(t *testing.T) {
+	root := writeProjectRoot(t, false)
+	nested := filepath.Join(root, "tools", "tht", "internal")
+	if err := os.MkdirAll(nested, 0o755); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := Discover(nested)
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := resolvedPath(t, root)
+	if got.Path != want {
+		t.Fatalf("Discover() root = %q, want %q", got.Path, want)
+	}
+	if got.IsWorktree {
+		t.Fatal("Discover() marked a main checkout as a worktree")
+	}
+}
+
+func TestDiscoverRecognizesLinkedGitWorktree(t *testing.T) {
+	root := writeProjectRoot(t, true)
+
+	got, err := Discover(root)
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := resolvedPath(t, root)
+	if got.Path != want {
+		t.Fatalf("Discover() root = %q, want %q", got.Path, want)
+	}
+	if !got.IsWorktree {
+		t.Fatal("Discover() did not mark a linked checkout as a worktree")
+	}
+}
+
+func TestDiscoverResolvesSymlinkForRootIdentity(t *testing.T) {
+	root := writeProjectRoot(t, false)
+	alias := filepath.Join(t.TempDir(), "checkout")
+	if err := os.Symlink(root, alias); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := Discover(filepath.Join(alias, "frontend"))
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := resolvedPath(t, root)
+	if got.Path != want {
+		t.Fatalf("Discover() root = %q, want canonical %q", got.Path, want)
+	}
+}
+
+func TestDiscoverRejectsDirectoriesThatAreNotThothIIProjects(t *testing.T) {
+	_, err := Discover(t.TempDir())
+	if err == nil {
+		t.Fatal("Discover() error = nil, want root discovery failure")
+	}
+}
+
+func writeProjectRoot(t *testing.T, linkedWorktree bool) string {
+	t.Helper()
+	root := t.TempDir()
+	for _, directory := range []string{"backend", "frontend", "harness", "tools", "deploy"} {
+		if err := os.MkdirAll(filepath.Join(root, directory), 0o755); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := os.WriteFile(filepath.Join(root, "compose.yaml"), []byte("services: {}\n"), 0o600); err != nil {
+		t.Fatal(err)
+	}
+	gitPath := filepath.Join(root, ".git")
+	if linkedWorktree {
+		if err := os.WriteFile(gitPath, []byte("gitdir: /tmp/thothii-worktree.git\n"), 0o600); err != nil {
+			t.Fatal(err)
+		}
+		return root
+	}
+	if err := os.Mkdir(gitPath, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	return root
+}
+
+func resolvedPath(t *testing.T, path string) string {
+	t.Helper()
+	resolved, err := filepath.EvalSymlinks(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return resolved
+}