refactor(frontend): replace status string literals with constants

- Create constants/statuses.js with MATCH_STATUS, SUGGESTION_STATUS, MATCH_FILTER
- Update MatchCard, MatchesPage, HistoryPage, RatePartnerPage to use MATCH_STATUS
- Update RecordingTab to use SUGGESTION_STATUS
- Update Navbar to use MATCH_STATUS for API calls

frontend/src/pages/RatePartnerPage.jsx

@@ -3,6 +3,7 @@ import { useParams, useNavigate } from 'react-router-dom';
 import Layout from '../components/layout/Layout';
 import { matchesAPI } from '../services/api';
 import { Star, Loader2 } from 'lucide-react';
+import { MATCH_STATUS } from '../constants';
 
 const RatePartnerPage = () => {
   const { slug } = useParams();
@@ -24,7 +25,7 @@ const RatePartnerPage = () => {
         setMatch(result.data);
 
         // Check if this match can be rated
-        if (result.data.status !== 'accepted' && result.data.status !== 'completed') {
+        if (result.data.status !== MATCH_STATUS.ACCEPTED && result.data.status !== MATCH_STATUS.COMPLETED) {
           alert('This match must be accepted before rating.');
           navigate('/matches');
           return;