feat: Add selective key exchange with pair command for secure peer connections

[Janmesh23]

Summary

This PR implements a selective key exchange system for enhanced P2P security in Sietch. It adds a new pair command that allows users to establish secure connections with specific peers, updates the discovery mechanism to support selective peer management, and enhances the sync functionality to work with the new key exchange system. The changes improve security by allowing users to control which peers they share data with, rather than syncing with all discovered peers.

AI Assistance

• I used AI assistance (generate code, write tests, refactor, or docs)
  • Used AI assistance for implementing the pair command structure, updating the discovery logic for selective peer management, and enhancing the sync functionality to integrate with the new key exchange system. AI helped with code organization and ensuring proper integration between the new components.

Fixes #116

[github-actions]

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• ❌ Missing or minimal explanation of changes

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[codecov]

Codecov Report

❌ Patch coverage is 1.86567% with 526 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
cmd/pair.go	4.32%	199 Missing ⚠️
internal/ui/prompt.go	0.00%	114 Missing ⚠️
internal/p2p/sync.go	0.00%	100 Missing ⚠️
cmd/discover.go	1.28%	77 Missing ⚠️
cmd/sync.go	0.00%	24 Missing ⚠️
internal/config/vault.go	0.00%	12 Missing ⚠️

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[Janmesh23]

Hi @SubstantialCattle5 !!
i made changes in the way the peers where connecting , added flags , and tested the working of the feature
i just had one issue while commit , there was some test failing which was not related to the work i did and the scope it had , i tried solving it but couldn't get to solve it so i have pushed my work , it does not conflict with the current work and has its all tests passed !

i did the total test-coverage as well , it was all fine i guess .
do revert back with suggestions , thankyou .

edit - i saw the codecov report of missing testing of the added code , if tests are needed , please guide me as to how and what should i do exactly for

[S4tvara]

Hi @Janmesh23 ,
Thank you for the PR. I'll review it soon and get back to you

[Janmesh23]

Hi @SubstantialCattle5 , any updates ?
(also i wanted to ask whether you can create a tag like this for sietch which appears below our contributions heatmap , it'll be cool to have it 😅)

[S4tvara]

Hi @SubstantialCattle5 , any updates ? (also i wanted to ask whether you can create a tag like this for sietch which appears below our contributions heatmap , it'll be cool to have it 😅)

Hi @Janmesh23 ,

A bit busy with office work, i'll mark it as hacktoberfest accepted such that it counts towards your contributions.
Also the tags are shown when you contribute to a repo owned by an organization, since this is a personal repo there is no tag for it. If you wanna showcase this project I would suggest you to pin it in to your profile or add it on your resume.

[Janmesh23]

Hi @SubstantialCattle5 , any updates ? (also i wanted to ask whether you can create a tag like this for sietch which appears below our contributions heatmap , it'll be cool to have it 😅)

Hi @Janmesh23 ,

A bit busy with office work, i'll mark it as hacktoberfest accepted such that it counts towards your contributions.
Also the tags are shown when you contribute to a repo owned by an organization, since this is a personal repo there is no tag for it. If you wanna showcase this project I would suggest you to pin it in to your profile or add it on your resume.

Yepp thanks

[github-actions]

💡 Suggestions to Improve This PR

• ❌ Missing or minimal explanation of changes

Consider addressing these points to make your contribution stronger. Thanks for contributing!

[github-actions]

💡 Suggestions to Improve This PR

• ❌ Missing or minimal explanation of changes

Consider addressing these points to make your contribution stronger. Thanks for contributing!