[codex] record wallet connection analytics

[MuncleUscles]

Summary

Adds analytics-only wallet connection recording for Studio, keyed by normalized wallet address instead of user accounts.

• Adds a wallet_connection_analytics table with first/last connection timestamps, connect count, server-observed IP, user agent, and origin metadata.
• Adds /api/analytics/wallet-connections as a focused FastAPI endpoint that derives IP from trusted proxy handling and does not trust client-supplied IP.
• Calls the endpoint from the frontend wallet sync path after connect/account changes without blocking wallet UX.
• Extracts the existing trusted-proxy client IP resolver so rate limiting and analytics use the same behavior.

Privacy / Product Notes

This is analytics-only. The stored wallet address and request metadata are not authentication or identity proof, and wallet addresses can be spoofed by client-side calls. Metadata is limited to IP, user agent, and Origin headers with bounded lengths; no request body beyond the wallet address is collected.

Validation

• /Users/edgars/Dev/genlayer-studio/.venv/bin/python -m pytest tests/unit/test_wallet_connection_analytics_service.py tests/unit/test_wallet_analytics_router.py tests/unit/test_rate_limit_middleware.py
• npm run test -- --run test/unit/hooks/useWalletSync.test.ts test/unit/services/walletAnalytics.test.ts
• /Users/edgars/Dev/genlayer-studio/.venv/bin/python -m black --check backend/protocol_rpc/client_ip.py backend/protocol_rpc/rate_limit_middleware.py backend/protocol_rpc/analytics_router.py backend/services/wallet_connection_analytics_service.py backend/database_handler/models.py tests/unit/test_wallet_connection_analytics_service.py tests/unit/test_wallet_analytics_router.py
• /Users/edgars/Dev/genlayer-studio/frontend/node_modules/.bin/prettier --check src/hooks/useWalletSync.ts src/services/walletAnalytics.ts test/unit/hooks/useWalletSync.test.ts test/unit/services/walletAnalytics.test.ts

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/wallet-connect-analytics

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[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
86.7% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud