feat: add player title system with 7 titles

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

store/titles_test.go

@@ -0,0 +1,115 @@
+package store
+
+import (
+	"testing"
+)
+
+func TestEarnTitle(t *testing.T) {
+	dir := t.TempDir()
+	db, err := Open(dir + "/test_titles.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	// Earn first title - should be newly earned and set as active
+	newlyEarned, err := db.EarnTitle("fp1", "novice")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !newlyEarned {
+		t.Error("should be newly earned")
+	}
+
+	data, err := db.GetTitleData("fp1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if data.ActiveTitle != "novice" {
+		t.Errorf("active title should be novice, got %s", data.ActiveTitle)
+	}
+	if len(data.Earned) != 1 {
+		t.Errorf("should have 1 earned title, got %d", len(data.Earned))
+	}
+
+	// Earn second title - active should remain first
+	newlyEarned2, err := db.EarnTitle("fp1", "explorer")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !newlyEarned2 {
+		t.Error("explorer should be newly earned")
+	}
+
+	data2, err := db.GetTitleData("fp1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if data2.ActiveTitle != "novice" {
+		t.Errorf("active title should remain novice, got %s", data2.ActiveTitle)
+	}
+	if len(data2.Earned) != 2 {
+		t.Errorf("should have 2 earned titles, got %d", len(data2.Earned))
+	}
+
+	// Duplicate earn returns false
+	dup, err := db.EarnTitle("fp1", "novice")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if dup {
+		t.Error("duplicate earn should return false")
+	}
+}
+
+func TestSetActiveTitle(t *testing.T) {
+	dir := t.TempDir()
+	db, err := Open(dir + "/test_titles_active.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	db.EarnTitle("fp1", "novice")
+	db.EarnTitle("fp1", "explorer")
+
+	err = db.SetActiveTitle("fp1", "explorer")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	data, err := db.GetTitleData("fp1")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if data.ActiveTitle != "explorer" {
+		t.Errorf("active title should be explorer, got %s", data.ActiveTitle)
+	}
+
+	// Setting unearned title should be a no-op
+	db.SetActiveTitle("fp1", "champion")
+	data2, _ := db.GetTitleData("fp1")
+	if data2.ActiveTitle != "explorer" {
+		t.Errorf("active title should remain explorer, got %s", data2.ActiveTitle)
+	}
+}
+
+func TestGetTitleDataEmpty(t *testing.T) {
+	dir := t.TempDir()
+	db, err := Open(dir + "/test_titles_empty.db")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	data, err := db.GetTitleData("fp_unknown")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if data.ActiveTitle != "" {
+		t.Errorf("expected empty active title, got %s", data.ActiveTitle)
+	}
+	if len(data.Earned) != 0 {
+		t.Errorf("expected no earned titles, got %d", len(data.Earned))
+	}
+}