fix: improve request log metrics table overflow

[kittors]

Summary

• show first-token latency directly in the response metrics column alongside duration and streaming mode
• clamp resized/stored table column widths to declared minimum widths
• improve API key table cell overflow so keys and permission summaries truncate naturally with tooltips

Verification

• rtk bun run --filter @code-proxy/admin-panel test pages/monitor/tests/requestLogsShared.test.ts pages/request-logs/tests/RequestLogsPage.test.tsx pages/api-keys/components/tests/ApiKeyColumns.test.tsx packages/ui/src/data-table/tests/tableStorage.test.ts
• rtk bun run e2e e2e/request-logs-column-reorder.spec.ts
• rtk bun run lint
• rtk bun run --filter @code-proxy/admin-panel build
• Playwright visual QA with mocked management APIs for /manage/#/api-keys and /manage/#/monitor/request-logs