feat(history): add Atuin context scopes

internal/workspace/workspace.go

@@ -108,6 +108,21 @@ func detectGitInfo(cwd string) (hasGit bool, branch string) {
 	return hasGit, ""
 }
 
+// GitRoot returns the repository root containing cwd, or an empty string.
+func GitRoot(cwd string) string {
+	dir := filepath.Clean(cwd)
+	for {
+		if _, err := os.Stat(filepath.Join(dir, ".git")); err == nil {
+			return dir
+		}
+		parent := filepath.Dir(dir)
+		if parent == dir {
+			return ""
+		}
+		dir = parent
+	}
+}
+
 type cacheEntry struct {
 	key  string // cwd + "|" + dirModTime
 	info WorkspaceInfo

internal/workspace/workspace_test.go

@@ -44,6 +44,24 @@ func TestDetect_EmptyDirectory(t *testing.T) {
 	}
 }
 
+func TestGitRoot(t *testing.T) {
+	repo := t.TempDir()
+	nested := filepath.Join(repo, "internal", "pkg")
+	if err := os.MkdirAll(filepath.Join(repo, ".git"), 0755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.MkdirAll(nested, 0755); err != nil {
+		t.Fatal(err)
+	}
+
+	if got := GitRoot(nested); got != repo {
+		t.Fatalf("expected git root %q, got %q", repo, got)
+	}
+	if got := GitRoot(t.TempDir()); got != "" {
+		t.Fatalf("expected no git root, got %q", got)
+	}
+}
+
 func TestDetect_NodeProject(t *testing.T) {
 	tmp := t.TempDir()
 	_ = os.WriteFile(filepath.Join(tmp, "package.json"), []byte("{}"), 0644)
@@ -135,7 +153,7 @@ func TestDetectCached_BranchSwitchWithoutDirChange(t *testing.T) {
 	// Simulate branch switch by updating .git/HEAD only
 	// (this does not update the modtime of tmp on typical filesystems since tmp's direct children didn't change)
 	_ = os.WriteFile(headPath, []byte("ref: refs/heads/feature\n"), 0644)
-	
+
 	// Force the modtime of HEAD to be distinct to avoid flakiness on low-res file systems
 	infoAfter, _ := os.Stat(headPath)
 	newMod := infoAfter.ModTime().Add(2 * time.Second)