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

backend/settings.py

@@ -40,7 +40,13 @@ class Settings:
         self.notify_timeout: int = int(os.getenv("SKD_NOTIFY_TIMEOUT", "5"))
         self.dry_run: bool = os.getenv("SKD_DRY_RUN", "false").lower() == "true"
         self.update_url: str = os.getenv("SKD_UPDATE_URL", "https://update.wlkns.org")
-        self.update_token: str = os.getenv("SKD_UPDATE_TOKEN", "")
+        self.update_service_url: str = os.getenv("SKD_UPDATE_SERVICE_URL", "https://update.wlkns.org")
+        self.update_project_id: str = os.getenv("SKD_UPDATE_PROJECT_ID", "safe-kiddo-control")
+        self.update_enroll_token: str = os.getenv("SKD_UPDATE_ENROLL_TOKEN", "")
+        self.update_token_file: str = os.getenv(
+            "SKD_UPDATE_TOKEN_FILE", "/var/lib/skd/update_token"
+        )
+        self.update_token: str = self._load_update_token()
         self.update_interval: int = int(os.getenv("SKD_UPDATE_INTERVAL", "3600"))
         self.update_status_url: str = os.getenv(
             "SKD_UPDATE_STATUS_URL", "https://update.wlkns.org/status"
@@ -63,6 +69,18 @@ class Settings:
     def _parse_list(value: str) -> List[str]:
         return [item for item in (part.strip() for part in value.split(",")) if item]
 
+    def _load_update_token(self) -> str:
+        env_token = os.getenv("SKD_UPDATE_TOKEN", "")
+        if env_token:
+            return env_token
+        if os.path.exists(self.update_token_file):
+            try:
+                with open(self.update_token_file, "r", encoding="utf-8") as f:
+                    return f.read().strip()
+            except OSError:
+                pass
+        return ""
+
 
 @lru_cache(maxsize=1)
 def get_settings() -> Settings: