Implements the missing UI control for POST /api/jails/{name}/ignoreself:
- Add jailIgnoreSelf endpoint constant to endpoints.ts
- Add toggleIgnoreSelf(name, on) API function to jails.ts
- Expose toggleIgnoreSelf action from useJailDetail hook
- Replace read-only 'ignore self' badge with a Fluent Switch in
IgnoreListSection to allow enabling/disabling the flag per jail
- Add 5 vitest tests for checked/unchecked state and toggle behaviour
- Send fail2ban's `unban --all` command via new `unban_all_ips()` service
function; returns the count of unbanned IPs
- Add `UnbanAllResponse` Pydantic model (message + count)
- Add `DELETE /api/bans/all` router endpoint; handles 502 on socket error
- Frontend: `bansAll` endpoint constant, `unbanAllBans()` API call,
`UnbanAllResponse` type, `unbanAll` action in `useActiveBans` hook
- JailsPage: "Clear All Bans" button (visible when bans > 0) with a
Fluent UI confirmation Dialog before executing the operation
- 7 new tests (3 service, 4 router); 440 total pass, 82% coverage
