feat(P33): uptime-kuma primitive + deploy-uptime pipeline stage (REQ-88..91)

---ci---
project: acdl
phase: 33
milestone: v1.8
status: execute
---/ci---

- New uptime L1 primitive (aws:ecs:uptime-service) deploying uptime-kuma
  on ECS Fargate with feature_flag_enabled, monitored_endpoints,
  static_checks, alert_channels (Teams/email/SMS/GitHub issues).
- Adapter emits ECS Fargate task + service when feature_flag_enabled=true;
  emits nothing when false. Container image louislam/uptime-kuma:1.
- New deploy-uptime pipeline stage in pipelines/deploy.yaml (after
  publish-outputs, before comment-outputs). Now 9 stages.
- run_platform.sh --deploy-uptime flag + automatic uptime deployment
  after L2 module (separate state $WORK/uptime-tf). Endpoints from L2
  outputs passed as monitored_endpoints. Feature flag from
  inputs.uptime_enabled (default true).
- scripts/seed_uptime_monitors.py for post-deploy monitor seeding via
  uptime-kuma API.
- Registered in registry.json (14 modules total).

Tests: +6 (312 -> 318). All pass.

modules/l1/uptime/instance.json

@@ -0,0 +1,38 @@
+{
+  "version": "1.0.0",
+  "stack": {
+    "name": "uptime",
+    "kind": "l1",
+    "depth": 1
+  },
+  "resources": [
+    {
+      "id": "uptime",
+      "type": "aws:ecs:uptime-service",
+      "module": "uptime@1.0.0",
+      "inputs": {
+        "container_image": "louislam/uptime-kuma:1",
+        "region": "us-east-1",
+        "feature_flag_enabled": true,
+        "cpu": 256,
+        "memory": 512,
+        "monitored_endpoints": [
+          {"name": "example", "url": "https://example.com", "type": "http", "interval_seconds": 60, "timeout_seconds": 30}
+        ],
+        "alert_channels": {
+          "teams_webhook": "https://hooks.example.com/webhook",
+          "email_addresses": ["oncall@example.com"]
+        }
+      },
+      "outputs": {
+        "uptime_url": {"type": "string"},
+        "service_arn": {"type": "arn"},
+        "task_definition_arn": {"type": "arn"}
+      },
+      "nfrs": {
+        "deletion_protection": true,
+        "encryption_enabled": true
+      }
+    }
+  ]
+}