Refactor routers to use explicit FastAPI app dependencies

backend/app/routers/blocklist.py

@@ -22,17 +22,14 @@ registered *before* the ``/{id}`` routes so FastAPI resolves them correctly.
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Annotated
+from typing import Annotated
 
 import aiosqlite
-
-if TYPE_CHECKING:
-    import aiohttp
-from fastapi import APIRouter, Depends, HTTPException, Query, Request, status
+from fastapi import APIRouter, Depends, HTTPException, Query, status
 
 from app.dependencies import (
+    AppDep,
     AuthDep,
-    DbDep,
     Fail2BanSocketDep,
     HttpSessionDep,
     SchedulerDep,
@@ -137,7 +134,6 @@ async def run_import_now(
         :class:`~app.models.blocklist.ImportRunResult` with per-source
         results and aggregated counters.
     """
-    from app.services import jail_service
 
     return await blocklist_service.import_all(
         db,
@@ -189,13 +185,13 @@ async def update_schedule(
     db: DbDep,
     _auth: AuthDep,
     scheduler: SchedulerDep,
-    request: Request,
+    app: AppDep,
 ) -> ScheduleInfo:
     """Persist a new schedule configuration and reschedule the import job.
 
     Args:
         payload: New :class:`~app.models.blocklist.ScheduleConfig`.
-        request: Incoming request (used to access the scheduler).
+        app: FastAPI application instance used to reschedule the import job.
         db: Application database connection (injected).
         _auth: Validated session — enforces authentication.
 
@@ -204,7 +200,7 @@ async def update_schedule(
     """
     await blocklist_service.set_schedule(db, payload)
     # Reschedule the background job immediately.
-    blocklist_import_task.reschedule(request.app)
+    blocklist_import_task.reschedule(app)
 
     job = scheduler.get_job(blocklist_import_task.JOB_ID)
     next_run_at: str | None = None