fix(observability): restore incumbent OTLP gRPC transport

ops/signoz/organization-canonical-route-migration.yaml

@@ -34,6 +34,8 @@ routes:
     grpc: 192.168.0.188:24317
     http: http://192.168.0.188:24318
     source_range: 192.168.0.120/31
+    http_bridge_status: active_legacy
+    grpc_bridge_status: source_ready_runtime_apply_pending
     expiry: "2026-08-15T23:59:59+08:00"
   challenger:
     canonical_id: signoz-110-otlp
@@ -78,6 +80,7 @@ wave_a_gates:
   challenger_application_allowlisted: true
   challenger_networkpolicy_allowed: true
   bridge_user_systemd_supervision_required: true
+  incumbent_grpc_bridge_required: true
   route_specific_log_replay_required: true
   route_specific_logs_metrics_traces_replay_required: true
 
@@ -96,6 +99,20 @@ runtime_observations:
   metrics_fresh: true
   traces_fresh: false
   bridge_supervisor: legacy_orphan_process
+  application_otlp_grpc:
+    endpoint: http://192.168.0.188:24317
+    root_cause: missing_incumbent_grpc_bridge
+    confidence: 0.99
+    api_pods_ready_at_audit: 2
+    recent_awoooi_api_trace_count: 0
+    http_only_verifier_blind_spot: true
+    source_fix:
+      bridge: scripts/reboot-recovery/signoz-188-otlp-grpc-bridge.sh
+      unit: ops/systemd/user/awoooi-signoz-otlp-grpc-bridge.service
+      post_verifier: scripts/reboot-recovery/verify-signoz-otel-grpc-runtime.sh
+      check_run_id: P0-OBS-002-grpc-bridge-check-20260715T012000+0800
+      check_terminal: pass
+      runtime_apply_status: check_pass_pending_stable_cd_window
   filelog_normalization: source_fix_canary_pending
   filelog_normalization_error_readback:
     window: 10m

ops/systemd/user/awoooi-signoz-otlp-grpc-bridge.service

@@ -0,0 +1,31 @@
+[Unit]
+Description=AWOOOI SigNoz OTLP gRPC compatibility bridge
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=simple
+Environment=LISTEN_HOST=192.168.0.188
+Environment=LISTEN_PORT=24317
+Environment=SOURCE_RANGE=192.168.0.120/31
+Environment=UPSTREAM_HOST=192.168.0.110
+Environment=UPSTREAM_PORT=4317
+ExecStartPre=/home/ollama/bin/awoooi-signoz-otlp-grpc-bridge.sh check-upstream
+ExecStart=/home/ollama/bin/awoooi-signoz-otlp-grpc-bridge.sh run
+ExecStopPost=/usr/bin/rm -f /home/ollama/run/awoooi-signoz-otlp-grpc-bridge.pid
+Restart=on-failure
+RestartSec=5s
+TimeoutStartSec=15s
+TimeoutStopSec=15s
+UMask=0077
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=read-only
+ReadWritePaths=/home/ollama/run /home/ollama/log
+LockPersonality=true
+MemoryDenyWriteExecute=true
+RestrictAddressFamilies=AF_INET AF_INET6
+
+[Install]
+WantedBy=default.target