refactor: Remove unused HTTPException imports from routers

After removing all try/except blocks that used HTTPException for domain
exception conversion, these imports are no longer needed in the routers.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

backend/app/routers/action_config.py

@@ -2,16 +2,9 @@ from __future__ import annotations
 
 from typing import Annotated
 
-from fastapi import APIRouter, HTTPException, Path, Query, Request, status
+from fastapi import APIRouter, Path, Query, Request, status
 
 from app.dependencies import AuthDep, Fail2BanConfigDirDep, Fail2BanSocketDep
-from app.exceptions import (
-    ActionAlreadyExistsError,
-    ActionNameError,
-    ActionNotFoundError,
-    ActionReadonlyError,
-    ConfigWriteError,
-)
 from app.models.config import (
     ActionConfig,
     ActionCreateRequest,

backend/app/routers/bans.py

@@ -10,7 +10,7 @@ Manual ban and unban operations and the active-bans overview:
 
 from __future__ import annotations
 
-from fastapi import APIRouter, HTTPException, Request, status
+from fastapi import APIRouter, Request, status
 
 from app.dependencies import (
     AuthDep,
@@ -19,11 +19,9 @@ from app.dependencies import (
     GeoBatchLookupDep,
     HttpSessionDep,
 )
-from app.exceptions import JailNotFoundError, JailOperationError
 from app.models.ban import ActiveBanListResponse, BanRequest, UnbanAllResponse, UnbanRequest
 from app.models.jail import JailCommandResponse
 from app.services import ban_service, jail_service
-from app.exceptions import Fail2BanConnectionError
 
 router: APIRouter = APIRouter(prefix="/api/bans", tags=["Bans"])
 

backend/app/routers/filter_config.py

@@ -2,17 +2,9 @@ from __future__ import annotations
 
 from typing import Annotated
 
-from fastapi import APIRouter, HTTPException, Path, Query, Request, status
+from fastapi import APIRouter, Path, Query, Request, status
 
 from app.dependencies import AuthDep, Fail2BanConfigDirDep, Fail2BanSocketDep
-from app.exceptions import (
-    ConfigWriteError,
-    FilterAlreadyExistsError,
-    FilterInvalidRegexError,
-    FilterNameError,
-    FilterNotFoundError,
-    FilterReadonlyError,
-)
 from app.models.config import (
     FilterConfig,
     FilterCreateRequest,

backend/app/routers/jail_config.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from typing import Annotated
 
-from fastapi import APIRouter, HTTPException, Path, Query, Request, status
+from fastapi import APIRouter, Path, Query, Request, status
 
 from app.dependencies import (
     AppDep,
@@ -12,21 +12,6 @@ from app.dependencies import (
     Fail2BanStartCommandDep,
     PendingRecoveryDep,
 )
-from app.exceptions import (
-    ActionNameError,
-    ActionNotFoundError,
-    ConfigOperationError,
-    ConfigValidationError,
-    ConfigWriteError,
-    Fail2BanConnectionError,
-    FilterNameError,
-    FilterNotFoundError,
-    JailAlreadyActiveError,
-    JailAlreadyInactiveError,
-    JailNameError,
-    JailNotFoundError,
-    JailNotFoundInConfigError,
-)
 from app.models.config import (
     ActivateJailRequest,
     AddLogPathRequest,

backend/app/routers/server.py

@@ -10,12 +10,11 @@ to flush log files.
 
 from __future__ import annotations
 
-from fastapi import APIRouter, HTTPException, Request, status
+from fastapi import APIRouter, Request, status
 
 from app.dependencies import AuthDep, Fail2BanSocketDep
 from app.models.server import ServerSettingsResponse, ServerSettingsUpdate
 from app.services import server_service
-from app.exceptions import ServerOperationError, Fail2BanConnectionError
 
 router: APIRouter = APIRouter(prefix="/api/server", tags=["Server"])