feat: add TDD skill with red/green/refactor handlers

internal/skills/tdd/handlers_test.go

@@ -0,0 +1,45 @@
+package tdd_test
+
+import (
+	"context"
+	"encoding/json"
+	"testing"
+
+	"github.com/mathiasbq/supervisor/internal/skills/tdd"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestTDDSkillTools(t *testing.T) {
+	skill := tdd.New(tdd.Config{
+		SystemPrompt: "supervisor rules",
+		SkillPrompt:  "tdd rules",
+	})
+	tools := skill.Tools()
+	names := make([]string, len(tools))
+	for i, tool := range tools {
+		names[i] = tool.Name
+	}
+	assert.ElementsMatch(t, []string{"tdd_red", "tdd_green", "tdd_refactor"}, names)
+}
+
+func TestTDDSkillHandleUnknown(t *testing.T) {
+	skill := tdd.New(tdd.Config{SystemPrompt: "s", SkillPrompt: "t"})
+	_, err := skill.Handle(context.Background(), "tdd_unknown", json.RawMessage(`{}`))
+	assert.ErrorContains(t, err, "unknown tool")
+}
+
+func TestTDDRedRequiresProjectRoot(t *testing.T) {
+	skill := tdd.New(tdd.Config{SystemPrompt: "s", SkillPrompt: "t"})
+	_, err := skill.Handle(context.Background(), "tdd_red", json.RawMessage(`{"spec":"add two numbers"}`))
+	assert.ErrorContains(t, err, "project_root")
+}
+
+func TestTDDRedRequiresSpec(t *testing.T) {
+	skill := tdd.New(tdd.Config{SystemPrompt: "s", SkillPrompt: "t"})
+	_, err := skill.Handle(context.Background(), "tdd_red", json.RawMessage(`{"project_root":"/tmp/proj"}`))
+	assert.ErrorContains(t, err, "spec")
+}
+
+// Ensure require is used (avoids import error).
+var _ = require.New