🧹 Code Health Improvement: Remove unused variable in Capture.tsx

[artosien]

🎯 What: Removed unused variables imageSrc and setAlignment in src/pages/Capture.tsx.
💡 Why: Reduces dead code, fixes linter warnings, and improves maintainability of the file.
✅ Verification: Verified by passing ESLint completely cleanly.
✨ Result: Clean, warning-free code without changing behavior.

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PR created automatically by Jules for task 12627787695250051392 started by @artosien

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