Stage 6: jail management — backend service, routers, tests, and frontend

- jail_service.py: list/detail/control/ban/unban/ignore-list/IP-lookup
- jails.py router: 11 endpoints including ignore list management
- bans.py router: active bans, ban, unban
- geo.py router: IP lookup with geo enrichment
- models: Jail.actions, ActiveBan.country/.banned_at optional, GeoDetail
- 217 tests pass (40 service + 36 router + 141 existing), 76% coverage
- Frontend: types/jail.ts, api/jails.ts, hooks/useJails.ts
- JailsPage: jail overview table with controls, ban/unban forms,
  active bans table, IP lookup
- JailDetailPage: full detail, start/stop/idle/reload, patterns,
  ignore list management

backend/app/models/jail.py

@@ -36,6 +36,7 @@ class Jail(BaseModel):
     find_time: int = Field(..., description="Time window (seconds) for counting failures.")
     ban_time: int = Field(..., description="Duration (seconds) of a ban. -1 means permanent.")
     max_retry: int = Field(..., description="Number of failures before a ban is issued.")
+    actions: list[str] = Field(default_factory=list, description="Names of actions attached to this jail.")
     status: JailStatus | None = Field(default=None, description="Runtime counters.")