feat: add configurable water level indicator dot

[hahny93]

Summary

Added a configurable water level indicator dot to the display, visible on menu/info/profile and brew/steam/water screens when a ToF/Alba water sensor is connected.

Display:

• 14px circle dot positioned at top center (Y=-230)
• Shows only when ToF sensor is present and the setting is enabled
• Uses sunriseIdle color when water level ≥20%, sunriseError color when low
• Both colors are configurable via existing Alba sunrise settings in the web UI

Settings:

• showWaterLevelDot toggle (default: on) in Settings → Machine → Alba Settings, below the External LED slider
• Persisted as NVS property "wld"

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Review details

⚙️ Run configuration

Configuration used: defaults

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Run ID: 9914d12f-5fa4-4256-af33-a272dc5efaa7

📥 Commits

Reviewing files that changed from the base of the PR and between 2026b81 and 996df63.

📒 Files selected for processing (7)

• src/display/core/Settings.cpp
• src/display/core/Settings.h
• src/display/plugins/WebUIPlugin.cpp
• src/display/ui/default/DefaultUI.cpp
• src/display/ui/default/DefaultUI.h
• web/src/pages/Settings/index.jsx
• web/src/pages/Settings/tabs/MachineTab.jsx

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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We require contributors to sign our Contributor License Agreement, and we don't have yours on file. In order for us to review and merge your code, please contact @jniebuhr (mdwasp) on Discord to get yourself added.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud