feat(mcp): session id store

internal/mcp/session_test.go

@@ -0,0 +1,22 @@
+package mcp_test
+
+import (
+	"testing"
+
+	"gitea.d-ma.be/mathias/gitea-mcp/internal/mcp"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSessionStoreIssueAndCheck(t *testing.T) {
+	s := mcp.NewSessionStore()
+
+	id := s.Issue()
+	assert.NotEmpty(t, id)
+	assert.Len(t, id, 32)
+
+	assert.True(t, s.Valid(id))
+	assert.False(t, s.Valid("bogus"))
+
+	s.Drop(id)
+	assert.False(t, s.Valid(id))
+}