Implement 'ask list' subcommand: parse export JSON, sort by priority/urgency, format UUID table

3 files changed, 131 insertions, 1 deletions

diff --git a/internal/askcli/command_list.go b/internal/askcli/command_list.go
new file mode 100644
index 0000000..ee45e6f
--- /dev/null
+++ b/internal/askcli/command_list.go
@@ -0,0 +1,51 @@
+package askcli
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"sort"
+	"strings"
+)
+
+func (d Dispatcher) handleList(ctx context.Context, args []string, stdout, stderr io.Writer) (int, error) {
+	filterArgs := []string{"export"}
+	for _, arg := range args[1:] {
+		if strings.HasPrefix(arg, "limit:") || strings.HasPrefix(arg, "sort:") ||
+			strings.HasPrefix(arg, "+") || arg == "started" {
+			filterArgs = append(filterArgs, arg)
+		}
+	}
+	var outBuf bytes.Buffer
+	code, err := d.runner.Run(ctx, filterArgs, nil, &outBuf, stderr)
+	if code != 0 {
+		return code, err
+	}
+	tasks, err := ParseTaskExport(&outBuf)
+	if err != nil {
+		return 1, nil
+	}
+	sort.Slice(tasks, func(i, j int) bool {
+		pi := priorityOrder(tasks[i].Priority)
+		pj := priorityOrder(tasks[j].Priority)
+		if pi != pj {
+			return pi < pj
+		}
+		return tasks[i].Urgency > tasks[j].Urgency
+	})
+	io.WriteString(stdout, FormatTaskList(tasks))
+	return 0, nil
+}
+
+func priorityOrder(p string) int {
+	switch p {
+	case "H":
+		return 1
+	case "M":
+		return 2
+	case "L":
+		return 3
+	default:
+		return 4
+	}
+}
diff --git a/internal/askcli/command_list_test.go b/internal/askcli/command_list_test.go
new file mode 100644
index 0000000..745a402
--- /dev/null
+++ b/internal/askcli/command_list_test.go
@@ -0,0 +1,77 @@
+package askcli
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"strings"
+	"testing"
+)
+
+func TestHandleList_Success(t *testing.T) {
+	jsonData := `[{"uuid":"uuid-1","description":"Task 1","status":"pending","priority":"H","tags":["cli"],"urgency":15.0,"depends":[]},{"uuid":"uuid-2","description":"Task 2","status":"completed","priority":"M","tags":["agent"],"urgency":10.0,"depends":[]}]`
+	d := NewDispatcher(&spyRunner{runFn: func(ctx context.Context, args []string, stdin io.Reader, stdout, stderr io.Writer) (int, error) {
+		if args[0] == "export" {
+			io.WriteString(stdout, jsonData)
+		}
+		return 0, nil
+	}})
+	var stdout, stderr bytes.Buffer
+	code, _ := d.Dispatch(context.Background(), []string{"list"}, nil, &stdout, &stderr)
+	if code != 0 {
+		t.Fatalf("list code = %d, want 0", code)
+	}
+	output := stdout.String()
+	if !strings.Contains(output, "uuid-1") || !strings.Contains(output, "uuid-2") {
+		t.Fatalf("output missing UUIDs: %s", output)
+	}
+}
+
+func TestHandleList_SortedByPriority(t *testing.T) {
+	jsonData := `[{"uuid":"uuid-2","description":"Task 2","status":"pending","priority":"M","tags":[],"urgency":10.0,"depends":[]},{"uuid":"uuid-1","description":"Task 1","status":"pending","priority":"H","tags":[],"urgency":5.0,"depends":[]}]`
+	d := NewDispatcher(&spyRunner{runFn: func(ctx context.Context, args []string, stdin io.Reader, stdout, stderr io.Writer) (int, error) {
+		if args[0] == "export" {
+			io.WriteString(stdout, jsonData)
+		}
+		return 0, nil
+	}})
+	var stdout bytes.Buffer
+	d.Dispatch(context.Background(), []string{"list"}, nil, &stdout, &bytes.Buffer{})
+	output := stdout.String()
+	lines := strings.Split(strings.TrimSpace(output), "\n")
+	taskLine1 := lines[2]
+	if !strings.Contains(taskLine1, "uuid-1") {
+		t.Fatalf("first task should be H priority (uuid-1), got: %s", taskLine1)
+	}
+}
+
+func TestHandleList_EmptyList(t *testing.T) {
+	d := NewDispatcher(&spyRunner{runFn: func(ctx context.Context, args []string, stdin io.Reader, stdout, stderr io.Writer) (int, error) {
+		if args[0] == "export" {
+			io.WriteString(stdout, "[]")
+		}
+		return 0, nil
+	}})
+	var stdout, stderr bytes.Buffer
+	code, _ := d.Dispatch(context.Background(), []string{"list"}, nil, &stdout, &stderr)
+	if code != 0 {
+		t.Fatalf("list code = %d, want 0 for empty list", code)
+	}
+}
+
+func TestHandleList_PassesFilters(t *testing.T) {
+	var capturedArgs []string
+	d := NewDispatcher(&spyRunner{runFn: func(ctx context.Context, args []string, stdin io.Reader, stdout, stderr io.Writer) (int, error) {
+		capturedArgs = args
+		io.WriteString(stdout, "[]")
+		return 0, nil
+	}})
+	var stdout, stderr bytes.Buffer
+	d.Dispatch(context.Background(), []string{"list", "+READY", "limit:5", "sort:priority-"}, nil, &stdout, &stderr)
+	if len(capturedArgs) < 2 {
+		t.Fatalf("expected export args, got %v", capturedArgs)
+	}
+	if capturedArgs[0] != "export" {
+		t.Fatalf("first arg should be export, got %s", capturedArgs[0])
+	}
+}
diff --git a/internal/askcli/dispatch.go b/internal/askcli/dispatch.go
index 399e346..35b9397 100644
--- a/internal/askcli/dispatch.go
+++ b/internal/askcli/dispatch.go
@@ -28,8 +28,10 @@ func (d Dispatcher) Dispatch(ctx context.Context, args []string, stdin io.Reader
 	}
 	subcommand := args[0]
 	switch subcommand {
-	case "add", "list", "info", "export":
+	case "add", "info", "export":
 		return d.runner.Run(ctx, args, stdin, stdout, stderr)
+	case "list":
+		return d.handleList(ctx, args, stdout, stderr)
 	case "dep":
 		return d.handleDep(ctx, args, stdout, stderr)
 	case "urgency":