fix(fxt,infra): production hardening — OTLP telemetry, TUI fixes, K8s infra
- Remove opentelemetry-otlp internal-logs feature (OTLP feedback loop)
- Switch trace sampling from AlwaysOn to 10% ratio-based
- Add RUST_LOG filtering (opentelemetry/h2/tonic/hyper=warn) to all 8 services
- Wire per-service latency measurement via health check → proto metadata → TUI
- Replace Vec::remove(0) with VecDeque ring buffers (O(1) vs O(n))
- Add Arc<AtomicBool> connected_sent for first-connected detection across 12 streams
- Add MAX_RECONNECT_ATTEMPTS (10) uniformly to all stream spawners
- Change kill switch/circuit breaker fields to Option types with N/A display
- Wire data_cache to real download status stream, remove dead cluster_events
- Remove ServiceData::new() hardcoded stubs, add honest placeholders
- Fix nanos_to_hms zero/negative guard, total_records semantic fix
- Fix RwLock held across yield in broker_gateway stream_account_state
- Add break after yield Err in broker/trading stream generators
- Fix connected_at advancing per tick in stream_session_status
- Tempo: replace emptyDir with 10Gi PVC, bump memory to 512Mi/2Gi
- Remove Prometheus gitlab-annotated-pods duplicate scrape job
- Wire 6 new gRPC streaming adapters (risk, trading, ml, data-acquisition)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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