Align session codec max-age with the 7-day cap (closes #108)

internal/session/export_test.go

@@ -0,0 +1,10 @@
+package session
+
+import "github.com/gorilla/sessions"
+
+// NewStore exposes the production cookie-store constructor so tests
+// exercise the store the application actually runs with, rather than a
+// lookalike assembled in the test.
+func NewStore(key []byte, secure bool) *sessions.CookieStore {
+	return newStore(key, secure)
+}