Add ECO_MODE to PrimaryFiltrationMode enum (fixes #69)

[mdz]

Fixes #69

SmartTub API returns ECO_MODE for primary filtration on some spas (e.g. J-375). The enum only had NORMAL and NANO_MODE, causing KeyError: 'ECO_MODE' when parsing get_status_full() and breaking the integration after login.

Change: Add ECO_MODE to SpaPrimaryFiltrationCycle.PrimaryFiltrationMode in smarttub/api.py.

Made with Cursor

---

Note

Low Risk
Small, localized enum expansion that only affects parsing/serialization of primary filtration mode values.

Overview
Adds ECO_MODE to SpaPrimaryFiltrationCycle.PrimaryFiltrationMode so SmartTub responses that report primaryFiltration.mode == "ECO_MODE" can be parsed without raising KeyError (e.g., when calling get_status_full()).

^{Written by Cursor Bugbot for commit 517848c. This will update automatically on new commits. Configure here.}