fix: use relative imports in traefik plugin to prevent double-registration; resolve PLUGIN_DIR path

fablednetmon/app.py

@@ -38,7 +38,7 @@ def create_app(
     # Run migrations (core + plugin) synchronously before event loop starts
     if not testing:
         from .core.migration_runner import run_migrations, get_plugin_migration_dirs
-        _plugin_dir = Path(app.config["PLUGIN_DIR"])
+        _plugin_dir = Path(app.config["PLUGIN_DIR"]).resolve()
         _plugin_migration_dirs = get_plugin_migration_dirs(
             _plugin_dir, app.config["PLUGINS"]
         )

plugins/traefik/__init__.py

@@ -12,14 +12,14 @@ def setup(app: "Quart") -> None:
     global _app
     _app = app
     # Import model to register with SQLAlchemy metadata
-    from plugins.traefik.models import TraefikMetric  # noqa: F401
+    from .models import TraefikMetric  # noqa: F401
 
 
 def get_scheduled_tasks() -> list:
-    from plugins.traefik.scheduler import make_scrape_task
+    from .scheduler import make_scrape_task
     return [make_scrape_task(_app)]
 
 
 def get_blueprint():
-    from plugins.traefik.routes import traefik_bp
+    from .routes import traefik_bp
     return traefik_bp

plugins/traefik/routes.py

@@ -5,7 +5,7 @@ from sqlalchemy import select
 
 from fablednetmon.auth.middleware import require_role
 from fablednetmon.models.users import UserRole
-from plugins.traefik.models import TraefikMetric
+from .models import TraefikMetric
 
 traefik_bp = Blueprint("traefik", __name__, template_folder="templates")
 

plugins/traefik/scheduler.py

@@ -36,8 +36,8 @@ async def _do_scrape(app: "Quart") -> None:
     global _prev_metrics, _prev_time
 
     from datetime import datetime, timezone
-    from plugins.traefik.models import TraefikMetric
-    from plugins.traefik.scraper import fetch_metrics, compute_router_metrics
+    from .models import TraefikMetric
+    from .scraper import fetch_metrics, compute_router_metrics
     from fablednetmon.core.alerts import record_metric
 
     metrics_url: str = app.config["PLUGINS"]["traefik"]["metrics_url"]