Add Hijri holy days timeline and reminders

[nasmans]

Summary

• add a Hijri utility that calculates Laylat al-Qadr nights (17/19/21 Ramadan) and reminder dates three days prior
• refresh the holy days service, public home page, and dashboard to use the new naming and shared timeline component
• introduce a Jest configuration and unit tests covering the Hijri calculations

Testing

• npm test (fails: jest binary unavailable because dependencies could not be installed in the sandbox)

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https://chatgpt.com/codex/tasks/task_b_690262c3093083289fedfb6b0c6c632d

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Populate Hijri fields expected by timeline consumers

The occurrences pushed in getUpcomingHolyDays expose the Hijri day, month, and year under generic keys day, month, and year, but downstream code and tests read hijriDay, hijriMonth, and hijriYear. This leaves the timeline rendering undefined values and causes the unit tests that assert result.map(item => item.hijriDay) to fail. The objects returned here should either rename the fields or provide aliases so the expected properties exist.

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[chatgpt-codex-connector]

Skip remaining holy nights when reference date is mid-Ramadan

The search for upcoming nights only initializes targetMonth once the loop encounters a day equal to HOLY_DAYS[0] (17 Ramadan). If the reference date is already after the 17th but before the 21st of the current Ramadan, targetMonth remains null until the loop reaches the next year’s Ramadan, so the function returns the following year’s 17/19/21 and never lists the still-upcoming 21 of the current cycle. Consider detecting that the reference date is already inside Ramadan and collecting the remaining nights without waiting for another 17.

Useful? React with 👍 / 👎.