feat: implement update-service v1 migration and enrollment flow

- added /update/enroll endpoint and enrollment logic
- migrated update client to v1 api endpoints and bearer auth
- implemented remote status reporting in backend and scripts
- updated requirements and project status

docs/architecture/openapi/schemas/limits.yaml

@@ -0,0 +1,39 @@
+type: object
+required:
+  - upload_max_artifact_size_bytes_soft
+  - upload_max_artifact_size_bytes_hard
+  - read_max_requests_per_minute_soft
+  - read_max_requests_per_minute_hard
+  - upload_max_requests_per_minute_soft
+  - upload_max_requests_per_minute_hard
+  - report_max_requests_per_minute_soft
+  - report_max_requests_per_minute_hard
+  - burst_requests_per_minute
+properties:
+  upload_max_artifact_size_bytes_soft:
+    type: integer
+    default: 1073741824
+  upload_max_artifact_size_bytes_hard:
+    type: integer
+    default: 2147483648
+  read_max_requests_per_minute_soft:
+    type: integer
+    default: 300
+  read_max_requests_per_minute_hard:
+    type: integer
+    default: 600
+  upload_max_requests_per_minute_soft:
+    type: integer
+    default: 6
+  upload_max_requests_per_minute_hard:
+    type: integer
+    default: 12
+  report_max_requests_per_minute_soft:
+    type: integer
+    default: 120
+  report_max_requests_per_minute_hard:
+    type: integer
+    default: 240
+  burst_requests_per_minute:
+    type: integer
+    default: 1200