refactor: harden open-sse services, eliminate any casts, add dashboard pages
- Replace all `as any` casts in MCP advancedTools with typed helpers (toRecord, toString, toNumber)
- Harden open-sse services: rateLimitManager, sessionManager, usage, roleNormalizer, signatureCache, comboMetrics
- Improve responseSanitizer and responseTranslator type safety
- Remove deprecated openai-responses request translator
- Add dashboard pages: /a2a, /mcp, /auto-combo with live data
- Improve error/loading/not-found pages with consistent design
- Add root loading.tsx and typecheck tsconfig variants
- Add check-t11-any-budget.mjs audit script
diegosouzapw
33dfbf0177