Add sgard info command for detailed file inspection.

Shows path, type, status, mode, hash, timestamps, encryption,
lock state, and targeting labels for a single tracked file.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

garden/info_test.go

@@ -0,0 +1,191 @@
+package garden
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestInfoTrackedFile(t *testing.T) {
+	root := t.TempDir()
+	repoDir := filepath.Join(root, "repo")
+
+	g, err := Init(repoDir)
+	if err != nil {
+		t.Fatalf("Init: %v", err)
+	}
+
+	// Create a file to track.
+	filePath := filepath.Join(root, "hello.txt")
+	if err := os.WriteFile(filePath, []byte("hello\n"), 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+
+	if err := g.Add([]string{filePath}); err != nil {
+		t.Fatalf("Add: %v", err)
+	}
+
+	fi, err := g.Info(filePath)
+	if err != nil {
+		t.Fatalf("Info: %v", err)
+	}
+
+	if fi.Type != "file" {
+		t.Errorf("Type = %q, want %q", fi.Type, "file")
+	}
+	if fi.State != "ok" {
+		t.Errorf("State = %q, want %q", fi.State, "ok")
+	}
+	if fi.Hash == "" {
+		t.Error("Hash is empty")
+	}
+	if fi.CurrentHash == "" {
+		t.Error("CurrentHash is empty")
+	}
+	if fi.Hash != fi.CurrentHash {
+		t.Errorf("Hash = %q != CurrentHash = %q", fi.Hash, fi.CurrentHash)
+	}
+	if fi.Updated == "" {
+		t.Error("Updated is empty")
+	}
+	if fi.DiskModTime == "" {
+		t.Error("DiskModTime is empty")
+	}
+	if !fi.BlobStored {
+		t.Error("BlobStored = false, want true")
+	}
+	if fi.Mode != "0644" {
+		t.Errorf("Mode = %q, want %q", fi.Mode, "0644")
+	}
+}
+
+func TestInfoModifiedFile(t *testing.T) {
+	root := t.TempDir()
+	repoDir := filepath.Join(root, "repo")
+
+	g, err := Init(repoDir)
+	if err != nil {
+		t.Fatalf("Init: %v", err)
+	}
+
+	filePath := filepath.Join(root, "hello.txt")
+	if err := os.WriteFile(filePath, []byte("hello\n"), 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+
+	if err := g.Add([]string{filePath}); err != nil {
+		t.Fatalf("Add: %v", err)
+	}
+
+	// Modify the file.
+	if err := os.WriteFile(filePath, []byte("changed\n"), 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+
+	fi, err := g.Info(filePath)
+	if err != nil {
+		t.Fatalf("Info: %v", err)
+	}
+
+	if fi.State != "modified" {
+		t.Errorf("State = %q, want %q", fi.State, "modified")
+	}
+	if fi.CurrentHash == fi.Hash {
+		t.Error("CurrentHash should differ from Hash after modification")
+	}
+}
+
+func TestInfoMissingFile(t *testing.T) {
+	root := t.TempDir()
+	repoDir := filepath.Join(root, "repo")
+
+	g, err := Init(repoDir)
+	if err != nil {
+		t.Fatalf("Init: %v", err)
+	}
+
+	filePath := filepath.Join(root, "hello.txt")
+	if err := os.WriteFile(filePath, []byte("hello\n"), 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+
+	if err := g.Add([]string{filePath}); err != nil {
+		t.Fatalf("Add: %v", err)
+	}
+
+	// Remove the file.
+	if err := os.Remove(filePath); err != nil {
+		t.Fatalf("Remove: %v", err)
+	}
+
+	fi, err := g.Info(filePath)
+	if err != nil {
+		t.Fatalf("Info: %v", err)
+	}
+
+	if fi.State != "missing" {
+		t.Errorf("State = %q, want %q", fi.State, "missing")
+	}
+	if fi.DiskModTime != "" {
+		t.Errorf("DiskModTime = %q, want empty for missing file", fi.DiskModTime)
+	}
+}
+
+func TestInfoUntracked(t *testing.T) {
+	root := t.TempDir()
+	repoDir := filepath.Join(root, "repo")
+
+	g, err := Init(repoDir)
+	if err != nil {
+		t.Fatalf("Init: %v", err)
+	}
+
+	filePath := filepath.Join(root, "nope.txt")
+	if err := os.WriteFile(filePath, []byte("nope\n"), 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+
+	_, err = g.Info(filePath)
+	if err == nil {
+		t.Fatal("Info should fail for untracked file")
+	}
+}
+
+func TestInfoSymlink(t *testing.T) {
+	root := t.TempDir()
+	repoDir := filepath.Join(root, "repo")
+
+	g, err := Init(repoDir)
+	if err != nil {
+		t.Fatalf("Init: %v", err)
+	}
+
+	target := filepath.Join(root, "target.txt")
+	if err := os.WriteFile(target, []byte("target\n"), 0o644); err != nil {
+		t.Fatalf("WriteFile: %v", err)
+	}
+
+	linkPath := filepath.Join(root, "link.txt")
+	if err := os.Symlink(target, linkPath); err != nil {
+		t.Fatalf("Symlink: %v", err)
+	}
+
+	if err := g.Add([]string{linkPath}); err != nil {
+		t.Fatalf("Add: %v", err)
+	}
+
+	fi, err := g.Info(linkPath)
+	if err != nil {
+		t.Fatalf("Info: %v", err)
+	}
+
+	if fi.Type != "link" {
+		t.Errorf("Type = %q, want %q", fi.Type, "link")
+	}
+	if fi.State != "ok" {
+		t.Errorf("State = %q, want %q", fi.State, "ok")
+	}
+	if fi.Target != target {
+		t.Errorf("Target = %q, want %q", fi.Target, target)
+	}
+}