Add Hot Spring Connected Spa integration

Unofficial cloud integration for Watkins/Hot Spring "Connected Spa" hot tubs.
Reverse-engineered from the official Android app.

- climate entity (setpoint + current water temp) via heater/control
- sensors: water temperature, salt output level, salt cartridge
- REST (JWT) login + spa discovery; mTLS fetch of rotating HiveMQ broker creds;
  MQTT subscribe (telemetry) / publish (control)
- config flow prompts for account email + password (stored encrypted, never in repo)
- no secrets committed: vendor mTLS client cert is loaded from host PEM files
  (see README); .gitignore blocks pem/p12/der/key/env

Fixes bug-41mqxddz7zeh

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01F6B8b3iYNv6QUftK2FDfYb

This commit is contained in:

Hank Mueller

2026-09-01 14:22:37 +00:00

co-authored by

Claude Opus 5

commit 8cda06f7f3

17 changed files with 1006 additions and 0 deletions

									
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				{

				  "name": "Hot Spring Connected Spa",

				  "content_in_root": false,

				  "render_readme": true,

				  "homeassistant": "2024.6.0"

				}