chore(main): release 4.0.0

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🤖 I have created a release beep boop

4.0.0 (2026-06-25)

⚠ BREAKING CHANGES

• The Homie MQTT protocol has been removed entirely. The controller now exclusively uses Home Assistant MQTT Discovery.

Features

• add Home Assistant climate/thermostat MQTT entity (d5daeb9)
• add mDNS responder for pool-controller.local discovery (#95) (b1252e7)
• convert WebUI to Progressive Web App (PWA) (b2f05d1)
• docs: add KiCad 9.0 schematic generator and PDF exports (#104) (ff46191)
• docs: Add Quick Start Guide, FAQ, and Safety Warnings (#107) (b0152e1)
• mqtt: set HA entity_category for all discovery entities (375f40f)
• NORVI AE01-R hardware support with OLED display (#117) (964a1bd)
• norvi: add OLED display with 4 info pages, button navigation, and QR code (34681e2)
• OLED Menu-Navigation, Sensor-Mapping in WebUI+HA, mDNS (f72bbe2)
• optimierte Pin-Belegung (GPIO32/33/25/26) + Status-LED mit Homie-Blinkcodes (c6ef387)
• temperature-based circulation time with continuous extension (b16a9d0)
• ui: add About section in More bottom sheet (5919624)
• ui: iOS-style bottom tab bar with glassmorphism (38eec43)
• web: add temperature-based circulation parameters to Web UI (963bcde)
• web: format effective runtime as duration in WebUI and HA (b460b4f)

Bug Fixes

• add native test infrastructure with ASan and coverage reporting (#98) (1421a39)
• docs synced de/en (909304d)
• ha: select-Entity-Status ohne Temperatur publishen (e6f32d7)
• ha: Sensor-Mapping Discovery bei jedem MQTT-Reconnect publishen (1ab82d9)
• mqtt: prevent dangling pointer and duplicate callback on reconnect (25090d7)
• restore telemetry updates and HA entity visibility (716dfe6)
• review findings for temperature-based circulation (8784f25)
• ui: display dashboard thresholds without-auth via /api/status, 4-across mode cards (e68d4bf)
• web: clarify that timer start/end also applies in Auto mode (5985a00)
• web: remove leftover merge conflict markers in index.html (#118) (907b676)

Miscellaneous Chores

• remove deprecated Homie references across codebase (1df0705)

---

This PR was generated with Release Please. See documentation.

[github-actions]

Native Test Coverage

Metric	Value
Line Coverage	22.6%
Branch Coverage	61.7%
Lines Hit/Total	104/461
Branches Hit/Total	37/60

Report from native unit tests (ASan + gcov).

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ ACTION	actionlint	8		0	0	0.31s
✅ BASH	bash-exec	1		0	0	0.22s
✅ BASH	shellcheck	1		0	0	0.26s
✅ BASH	shfmt	1		0	0	0.01s
✅ C	clang-format	1		0	0	0.29s
✅ C	cppcheck	1		0	0	0.04s
✅ C	cpplint	1		0	0	0.34s
✅ CPP	clang-format	61		0	0	0.44s
✅ CPP	cppcheck	61		0	0	8.79s
✅ CPP	cpplint	61		0	0	5.37s
✅ EDITORCONFIG	editorconfig-checker	226		0	0	0.42s
✅ JSON	jsonlint	6		0	0	0.13s
✅ JSON	v8r	6		0	0	3.69s
✅ MARKDOWN	markdownlint	92		0	0	3.52s
✅ YAML	yamllint	24		0	0	0.73s

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🤖 Release is at https://github.com/smart-swimmingpool/pool-controller/releases/tag/v4.0.0 🌻