Fix/frontend compilation and syntax

[DebasmitaBose0]

Closes #261

Summary

This PR addresses and fully resolves multiple fatal compilation and syntax bugs across the Next.js client workspace, restoring build success under the Next Turbopack compiler.

Changes Made

• Dependency Swap: Replaced bcrypt with pure-JS bcryptjs and @types/bcryptjs in package.json to bypass native C++ compilation errors. Updated client/lib/auth.ts.
• De-Duplication: Resolved duplicate exports, imports, and pages in client/app/login/page.tsx, preserving the premium theme secure portal login.
• Route Re-write: Cleaned up scrambled syntax inside client/app/api/analyze/route.ts, establishing a clean, secure proxy pipeline between Next.js and the FastAPI downstream backend.
• Dashboard Syntax Fix: Fixed duplicate async declarations of runAutomatedFlow, added proper fallback handling, and corrected mixed parentheses rendering blocks on line 1499 of client/app/dashboard/page.tsx.

Testing

• Executed npm install and ran npm run build locally.
• Result: ✓ Compiled successfully in 52s with all static pages optimized and zero compilation errors.

Impact

Vastly improves developer experience (DX) and repo health by proactively catching compilation bugs.

Checklist

• Code follows project standards
• Tested locally
• No unrelated changes included
• Responsive design verified
• Accessibility considered

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