feat(calendar) | expose current SDK options in WordPress SPW-20290

[amir-faghihi]

Functional Changes

Local QA sign-off

Not applicable by Codex (automated checks passed; PHPUnit and live WordPress smoke test were not available)

What is the change?

• Expose the current calendar SDK options through both WordPress calendar shortcodes.
• Map WordPress snake_case attributes to typed SDK camelCase options.
• Support display pricing, hidden pricing, direct date and timeslot targets, special-event keys, and multi-day start-date-only highlighting.
• Add shortcode documentation and focused PHP/JavaScript coverage.

Why the change is important?

• Keeps the WordPress calendar integrations aligned with the current Showpass calendar SDK.
• Allows WordPress embeds and modal calendars to use the same calendar targeting and presentation options as the frontend.

How to test?

• npm run test:calendar
• node --check plugin/js/showpass-calendar-params.js
• php -l plugin/showpass-wordpress-plugin-shortcode.php
• php -l tests/CalendarShortcodeTest.php
• Exercise both [showpass_calendar_widget] and [showpass_embed_calendar] in WordPress with the documented attributes.

Database Migrations

What is the reason for the migration(s) and impact on the database?

No database migrations.

Migration Approval

Not applicable by Codex (no migrations).

Additional Notes

PHPUnit was not run because vendor/bin/phpunit is not installed in the checkout. No deploy notes required.