Synchronize URL Hash with Active Section

[bae080311]

Summary

It's common practice to update the URL hash to reflect the currently active section for shareability and direct linking. The library should provide an option to automatically manage this.

Proposed Solution

Implement a feature that, when enabled, automatically updates window.location.hash to the ID of the currently active section. It should also handle initial load by jumping to the section specified in the URL hash, if present.

Acceptance Criteria

• When scrolling, window.location.hash updates to the active section's ID.
• Initial page load with a hash (e.g., /#section-id) correctly scrolls to and activates that section.
• Option syncHash: boolean or updateUrlHash: boolean is available.
• Back/forward browser navigation correctly updates the active section based on hash changes.

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