Refactor router dependencies to use explicit fail2ban socket and HTTP session injection

backend/app/routers/dashboard.py

@@ -12,15 +12,17 @@ Also provides ``GET /api/dashboard/bans`` for the dashboard ban-list table,
 
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Literal
-
-if TYPE_CHECKING:
-    import aiohttp
+from typing import Literal
 
 from fastapi import APIRouter, Query, Request
 
 from app import __version__
-from app.dependencies import AuthDep, DbDep
+from app.dependencies import (
+    AuthDep,
+    DbDep,
+    Fail2BanSocketDep,
+    HttpSessionDep,
+)
 from app.models.ban import (
     BanOrigin,
     BansByCountryResponse,
@@ -80,9 +82,10 @@ async def get_server_status(
     summary="Return a paginated list of recent bans",
 )
 async def get_dashboard_bans(
-    request: Request,
     _auth: AuthDep,
     db: DbDep,
+    socket_path: Fail2BanSocketDep,
+    http_session: HttpSessionDep,
     range: TimeRange = Query(default=_DEFAULT_RANGE, description="Time-range preset."),
     source: Literal["fail2ban", "archive"] = Query(
         default="fail2ban",
@@ -104,7 +107,6 @@ async def get_dashboard_bans(
     GET request.
 
     Args:
-        request: The incoming request (used to access ``app.state``).
         _auth: Validated session dependency.
         range: Time-range preset — ``"24h"``, ``"7d"``, ``"30d"``, or
             ``"365d"``.
@@ -116,9 +118,6 @@ async def get_dashboard_bans(
         :class:`~app.models.ban.DashboardBanListResponse` with paginated
         ban items and the total count for the selected window.
     """
-    socket_path: str = request.app.state.settings.fail2ban_socket
-    http_session: aiohttp.ClientSession = request.app.state.http_session
-
     return await ban_service.list_bans(
         socket_path,
         range,
@@ -138,9 +137,10 @@ async def get_dashboard_bans(
     summary="Return ban counts aggregated by country",
 )
 async def get_bans_by_country(
-    request: Request,
     _auth: AuthDep,
     db: DbDep,
+    socket_path: Fail2BanSocketDep,
+    http_session: HttpSessionDep,
     range: TimeRange = Query(default=_DEFAULT_RANGE, description="Time-range preset."),
     source: Literal["fail2ban", "archive"] = Query(
         default="fail2ban",
@@ -164,7 +164,6 @@ async def get_bans_by_country(
     during this GET request.
 
     Args:
-        request: The incoming request.
         _auth: Validated session dependency.
         range: Time-range preset.
         origin: Optional filter by ban origin.
@@ -173,9 +172,6 @@ async def get_bans_by_country(
         :class:`~app.models.ban.BansByCountryResponse` with per-country
         aggregation and the companion ban list.
     """
-    socket_path: str = request.app.state.settings.fail2ban_socket
-    http_session: aiohttp.ClientSession = request.app.state.http_session
-
     return await ban_service.bans_by_country(
         socket_path,
         range,
@@ -195,9 +191,9 @@ async def get_bans_by_country(
     summary="Return ban counts aggregated into time buckets",
 )
 async def get_ban_trend(
-    request: Request,
     _auth: AuthDep,
     db: DbDep,
+    socket_path: Fail2BanSocketDep,
     range: TimeRange = Query(default=_DEFAULT_RANGE, description="Time-range preset."),
     source: Literal["fail2ban", "archive"] = Query(
         default="fail2ban",
@@ -223,7 +219,6 @@ async def get_ban_trend(
     * ``365d`` → 7-day buckets   (~53 total)
 
     Args:
-        request: The incoming request (used to access ``app.state``).
         _auth: Validated session dependency.
         range: Time-range preset.
         origin: Optional filter by ban origin.
@@ -232,8 +227,6 @@ async def get_ban_trend(
         :class:`~app.models.ban.BanTrendResponse` with the ordered bucket
         list and the bucket-size label.
     """
-    socket_path: str = request.app.state.settings.fail2ban_socket
-
     return await ban_service.ban_trend(
         socket_path,
         range,
@@ -249,9 +242,9 @@ async def get_ban_trend(
     summary="Return ban counts aggregated by jail",
 )
 async def get_bans_by_jail(
-    request: Request,
     _auth: AuthDep,
     db: DbDep,
+    socket_path: Fail2BanSocketDep,
     range: TimeRange = Query(default=_DEFAULT_RANGE, description="Time-range preset."),
     source: Literal["fail2ban", "archive"] = Query(
         default="fail2ban",
@@ -269,7 +262,6 @@ async def get_bans_by_jail(
     distribution bar chart.
 
     Args:
-        request: The incoming request (used to access ``app.state``).
         _auth: Validated session dependency.
         range: Time-range preset — ``"24h"``, ``"7d"``, ``"30d"``, or
             ``"365d"``.
@@ -279,8 +271,6 @@ async def get_bans_by_jail(
         :class:`~app.models.ban.BansByJailResponse` with per-jail counts
         sorted descending and the total for the selected window.
     """
-    socket_path: str = request.app.state.settings.fail2ban_socket
-
     return await ban_service.bans_by_jail(
         socket_path,
         range,