No canonical snake_case/camelCase serialization policy

backend/app/models/history.py

@@ -5,7 +5,9 @@ Request, response, and domain models used by the history router and service.
 
 from __future__ import annotations
 
-from pydantic import BaseModel, ConfigDict, Field
+from pydantic import Field
+
+from app.models.response import BanGuiBaseModel
 
 from app.models.ban import TimeRange
 
@@ -17,16 +19,13 @@ __all__ = [
     "TimeRange",
 ]
 
-
-class HistoryBanItem(BaseModel):
+class HistoryBanItem(BanGuiBaseModel):
     """A single row in the history ban-list table.
 
     Populated from the fail2ban database and optionally enriched with
     geolocation data.
     """
 
-    model_config = ConfigDict(strict=True)
-
     ip: str = Field(..., description="Banned IP address.")
     jail: str = Field(..., description="Jail that issued the ban.")
     banned_at: str = Field(..., description="ISO 8601 UTC timestamp of the ban.")
@@ -57,31 +56,24 @@ class HistoryBanItem(BaseModel):
         description="Organisation name associated with the IP.",
     )
 
-
-class HistoryListResponse(BaseModel):
+class HistoryListResponse(BanGuiBaseModel):
     """Paginated history ban-list response."""
 
-    model_config = ConfigDict(strict=True)
-
     items: list[HistoryBanItem] = Field(default_factory=list)
     total: int = Field(..., ge=0, description="Total matching records.")
     page: int = Field(..., ge=1)
     page_size: int = Field(..., ge=1)
 
-
 # ---------------------------------------------------------------------------
 # Per-IP timeline
 # ---------------------------------------------------------------------------
 
-
-class IpTimelineEvent(BaseModel):
+class IpTimelineEvent(BanGuiBaseModel):
     """A single ban event in a per-IP timeline.
 
     Represents one row from the fail2ban ``bans`` table for a specific IP.
     """
 
-    model_config = ConfigDict(strict=True)
-
     jail: str = Field(..., description="Jail that triggered this ban.")
     banned_at: str = Field(..., description="ISO 8601 UTC timestamp of the ban.")
     ban_count: int = Field(
@@ -99,16 +91,13 @@ class IpTimelineEvent(BaseModel):
         description="Matched log lines that triggered the ban.",
     )
 
-
-class IpDetailResponse(BaseModel):
+class IpDetailResponse(BanGuiBaseModel):
     """Full historical record for a single IP address.
 
     Contains aggregated totals and a chronological timeline of all ban events
     recorded in the fail2ban database for the given IP.
     """
 
-    model_config = ConfigDict(strict=True)
-
     ip: str = Field(..., description="The IP address.")
     total_bans: int = Field(..., ge=0, description="Total number of ban records.")
     total_failures: int = Field(