feat: custom context banner

[Loubal70]

This PR introduces customizable consent banner placeholders for blocked shortcodes with full i18n (internationalization) support, along with UX improvements for the extension subpage.

Features

• Customizable Consent Banner: Administrators can now customize the placeholder content displayed when a shortcode is blocked:
  • Custom title
  • Custom description (supports {plugin_name} placeholder)
  • Custom button text
  • Option to hide decoration (cookie icon and background shape)
• i18n Support: All placeholder texts support multilingual configurations. When a multilingual plugin (WPML, Polylang, etc.) is detected, a language selector allows setting different messages per language.
• Extension Subpage UX Improvements:
  • Unified color scheme
  • Smooth transitions between states
  • Auto-scroll into the drawer when opened

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⚠️ Important: Translations are missing for the new strings. This PR should be merged after #41 to avoid conflicts on translation files.

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Summary by cubic

Introduces a customizable, multilingual consent banner for blocked shortcodes and improves the extension subpage UX.

• New Features

  • Custom banner for blocked shortcodes: title, description (supports {plugin_name}), button text, and option to hide decoration.
  • Full i18n for banner texts with per-language values when WPML/Polylang is detected; frontend uses the current language.
  • Extension subpage UX: unified amber theme, smoother transitions, and drawer auto-scroll.

• Migration

  • Adds DB columns for shortcode_placeholder_button_text and shortcode_placeholder_hide_decoration; runs automatically on upgrade.

^{Written for commit f4f3193. Summary will update on new commits.}

[cubic-dev-ai]

2 issues found across 14 files

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="includes/classes/models/class-plugins.php">

<violation number="1" location="includes/classes/models/class-plugins.php:427">
P2: Missing fallback to &#39;default&#39; key in JSON. The docblock documents support for `{&quot;default&quot;: &quot;...&quot;, &quot;fr&quot;: &quot;...&quot;}` format, but the implementation returns empty string when the requested language doesn&#39;t exist instead of falling back to `$decoded[&#39;default&#39;]`.</violation>
</file>

<file name="templates/admin/common/fields/toggle.php">

<violation number="1" location="templates/admin/common/fields/toggle.php:19">
P1: Using `hidden` (display: none) on the checkbox breaks keyboard accessibility. Users cannot Tab to this toggle control. Use `sr-only` or keep the visually-hidden-but-accessible pattern instead.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}