Feature request: Random ayah navigation (with range options)

[kkebb]

Problem / motivation

There is currently no quick way to jump to a random ayah for reflection, study, or memorization review. Users who want to "open to a random verse" have to pick a sura/ayah manually via the Jump dialog.

Proposed feature

Add a Random ayah entry to the overflow menu on both the home screen and the reading screen. It would be a submenu offering:

• Whole Quran - instantly jump to and highlight a uniformly random ayah.
• Sura range... - random ayah within a chosen span of suras.
• Ayah range... - random ayah within an arbitrary sura:ayah to sura:ayah span.
• Juz range... - random ayah within a chosen span of juz' (1-30).

Selecting a result reuses the existing jump-and-highlight navigation, so it behaves like the existing Jump/Search flows.

Scope / notes

• Core selection logic can live in reusable QuranInfo helpers (random ayah id -> SuraAyah), keeping it unit-testable.
• The range pickers can follow the existing Jump dialog pattern.
• English strings first; other locales can be translated separately.

Implementation

Implemented in PR #3686 (opened per the README guidance to file an issue for new features).

[kkebb]

cc @ahmedre

I am super excited for these features to be merged. Testing is all complete.