HTTP Request Timeouts

Priority: P1

Health check has a 3s timeout via AbortController. SSE has a 15s heartbeat timeout. General SDK calls have no timeouts.

Remaining Work

• Add configurable request timeout (default: 60s) around SDK calls in KiloProvider
• Add shorter connect timeout where possible (default: 10s)
• Ensure timeout cleanup on successful response (no leaked timers)