[NSOC'26][GSSOC'26]Fix data nesting corruption in FirestoreCache update method

[diksha78dev]

Pull Request Template 🚀

Description

This PR resolves a data integrity bug in the custom in-memory FirestoreCache utility.
When updating a document, the update() method incorrectly spread the wrapper object { data, timestamp } instead of the inner document data. This resulted in corrupted cache entries that nested the document under data.data and broke subsequent get() operations.

Motivation: Restore data consistency for cached user profiles and optimize memory caching behavior.

Related Issue

Closes #386

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Screenshots / Videos (if applicable)

Not applicable (logical cache layer bug fix).

Testing Done

• Command run: npm run test
• Command run: npm run lint
• Command run: npm run build
• Visual verification on local dev server (http://localhost:5173)

Checklist

• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings or console errors.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.

Contributor Declaration

• I confirm that this contribution is made under the rules of GSSoC 2026 and NSoC 2026.
• I confirm that I have been assigned the related issue by a maintainer before opening this PR.
• I have read the Contributing Guidelines and Code of Conduct.

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Project	Deployment	Actions	Updated (UTC)
ranker-hub	Ready	Preview, Comment	Jun 8, 2026 5:23pm

[divyagsharma2006-blip]

hi @diksha78dev solve the conflits