feat(gateway): add wallet service routes for profile page

Add /api/v1/wallet route to Kong gateway to support:
- GET /wallet/my-wallet
- POST /wallet/claim-rewards
- POST /wallet/settle
- POST /wallet/withdraw
- GET /wallet/withdrawals
- GET /wallet/ledger/my-ledger

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/api-gateway/kong.yml

@@ -59,9 +59,13 @@ services:
         paths:
           - /api/v1/wallets
         strip_path: false
+      - name: wallet-main
+        paths:
+          - /api/v1/wallet
+        strip_path: false
       - name: wallet-health
         paths:
-          - /api/v1/wallet/health
+          - /api/v1/wallet-service/health
         strip_path: true
 
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