Add ban management features and update documentation

- Implement ban model, service, and router endpoints in backend
- Add ban table component and dashboard integration in frontend
- Update ban-related types and API endpoints
- Add comprehensive tests for ban service and dashboard router
- Update documentation (Features, Tasks, Architecture, Web-Design)
- Clean up old fail2ban configuration files
- Update Makefile with new commands

backend/tests/test_services/test_ban_service.py

@@ -1,4 +1,4 @@
-"""Tests for ban_service.list_bans() and ban_service.list_accesses()."""
+"""Tests for ban_service.list_bans()."""
 
 from __future__ import annotations
 
@@ -299,61 +299,3 @@ class TestListBansPagination:
             result = await ban_service.list_bans("/fake/sock", "7d", page_size=1)
 
         assert result.total == 3  # All three bans are within 7d.
-
-
-# ---------------------------------------------------------------------------
-# list_accesses
-# ---------------------------------------------------------------------------
-
-
-class TestListAccesses:
-    """Verify ban_service.list_accesses()."""
-
-    async def test_expands_matches_into_rows(self, f2b_db_path: str) -> None:
-        """Each element in ``data.matches`` becomes a separate row."""
-        with patch(
-            "app.services.ban_service._get_fail2ban_db_path",
-            new=AsyncMock(return_value=f2b_db_path),
-        ):
-            result = await ban_service.list_accesses("/fake/sock", "24h")
-
-        # Two bans in last 24h: sshd (1 match) + nginx (1 match) = 2 rows.
-        assert result.total == 2
-        assert len(result.items) == 2
-
-    async def test_access_item_has_line_field(self, f2b_db_path: str) -> None:
-        """Each access item contains the raw matched log line."""
-        with patch(
-            "app.services.ban_service._get_fail2ban_db_path",
-            new=AsyncMock(return_value=f2b_db_path),
-        ):
-            result = await ban_service.list_accesses("/fake/sock", "24h")
-
-        for item in result.items:
-            assert item.line
-
-    async def test_ban_with_no_matches_produces_no_access_rows(
-        self, f2b_db_path: str
-    ) -> None:
-        """Bans with empty matches list do not contribute rows."""
-        with patch(
-            "app.services.ban_service._get_fail2ban_db_path",
-            new=AsyncMock(return_value=f2b_db_path),
-        ):
-            result = await ban_service.list_accesses("/fake/sock", "7d")
-
-        # Third ban (9.10.11.12) has no matches, so only 2 rows total.
-        assert result.total == 2
-
-    async def test_empty_db_returns_zero_accesses(
-        self, empty_f2b_db_path: str
-    ) -> None:
-        """Returns empty result when no bans exist."""
-        with patch(
-            "app.services.ban_service._get_fail2ban_db_path",
-            new=AsyncMock(return_value=empty_f2b_db_path),
-        ):
-            result = await ban_service.list_accesses("/fake/sock", "24h")
-
-        assert result.total == 0
-        assert result.items == []