Theme and bg color improvements

[iMattPro]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.72%. Comparing base (581f7dc) to head (377bc07).

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #139   +/-   ##
=========================================
  Coverage     98.72%   98.72%           
  Complexity      241      241           
=========================================
  Files             9        9           
  Lines           704      704           
=========================================
  Hits            695      695           
  Misses            9        9           

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[Copilot]

Copilot review overview

🟡 Changes recommended

The theme-color meta tag must be preserved for browser PWA colour support.

Review effort: Lite
Findings: 1

Open (1)

• Restore theme-color meta tag for PWA browser theming · New

What changed in this PR

Adds ACP controls to detect PWA theme and background colours from installed styles.

Changes:

• Adds colour-detection controls, iframe preview logic, styling, and localized labels.
• Updates listener tests and removes obsolete background-colour template data.
• Updates PWA head colour output.

Review note: retain the theme-color meta tag alongside the CSS custom property.

File	Description
tests/​event/​listener_test.php	Updates listener expectations.
styles/​all/​template/​event/​overall_header_head_append.html	Updates PWA colour markup.
language/​ru/​webpushnotifications_module_acp.php	Adds Russian detection strings.
language/​en/​webpushnotifications_module_acp.php	Adds English detection strings.
event/​listener.php	Removes obsolete background-colour template data.
adm/​style/​wpn_acp_pwa.html	Adds detection controls.
adm/​style/​pwa_acp.js	Implements colour detection and field updates.
adm/​style/​pwa_acp.css	Styles detection status and preview iframe.

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[Copilot]

Copilot review overview

🟡 Changes recommended

Moderate issues remain with PWA colour semantics, banner contrast, and notification URL handling.

Review effort: Lite
Findings: 1

Open (1)

• Resolve same-origin notification URLs before opening · New

Resolved since last review (1)

• Restore theme-color meta tag for PWA browser theming

Previously missed (1)

In code that hasn't changed since last review

Use detected background color for manifest background

adm/​style/​pwa_acp.js:148

The detected page background is written to theme, but background is replaced with the opposite black/white colour. The manifest’s background_color is the splash/app-window background and should match the page’s initial background; for a dark blue or light gray style this introduces a visible flash of the wrong colour. Use the detected colour for the background as well (or derive both values according to the manifest semantics), rather than choosing a contrast colour.

[Copilot]

Copilot review overview

🔵 Needs a closer look

test_worker_bot() may fail without the required board URL setup.

Review effort: Lite
Findings: None

Resolved since last review (1)

• Resolve same-origin notification URLs before opening