docs: add comprehensive CONTRIBUTING.md guide#430

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Devvekariya711 wants to merge 2 commits intokavishdevar:mainfrom

Devvekariya711:docs/add-contributing-guide

Commits on Jan 17, 2026

docs: add comprehensive CONTRIBUTING.md guide
Devvekariya711
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Commits on Jan 22, 2026

fix: address CodeRabbit review - update Android toolchain and fix typo
Devvekariya711
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