feat: implement dashboard ban overview (Stage 5)

- Add ban_service reading fail2ban SQLite DB via read-only aiosqlite
- Add geo_service resolving IPs via ip-api.com with 10k in-memory cache
- Add GET /api/dashboard/bans and GET /api/dashboard/accesses endpoints
- Add TimeRange, DashboardBanItem, DashboardBanListResponse, AccessListItem,
  AccessListResponse models in models/ban.py
- Build BanTable component (Fluent UI DataGrid) with bans/accesses modes,
  pagination, loading/error/empty states, and ban-count badges
- Build useBans hook managing time-range and pagination state
- Update DashboardPage: status bar + time-range toolbar + tab switcher
- Add 37 new backend tests (ban service, geo service, dashboard router)
- All 141 tests pass; ruff/mypy --strict/tsc --noEmit clean

frontend/package-lock.json

@@ -25,8 +25,10 @@
         "eslint": "^9.13.0",
         "eslint-config-prettier": "^9.1.0",
         "eslint-plugin-react-hooks": "^5.0.0",
+        "jiti": "^2.6.1",
         "prettier": "^3.3.3",
         "typescript": "^5.6.3",
+        "typescript-eslint": "^8.56.1",
         "vite": "^5.4.11"
       }
     },
@@ -4204,6 +4206,16 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/jiti": {
+      "version": "2.6.1",
+      "resolved": "https://registry.npmjs.org/jiti/-/jiti-2.6.1.tgz",
+      "integrity": "sha512-ekilCSN1jwRvIbgeg/57YFh8qQDNbwDb9xT/qu2DAHbFFZUicIl4ygVaAvzveMhMVr3LnpSKTNnwt8PoOfmKhQ==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "jiti": "lib/jiti-cli.mjs"
+      }
+    },
     "node_modules/js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
@@ -4884,6 +4896,30 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/typescript-eslint": {
+      "version": "8.56.1",
+      "resolved": "https://registry.npmjs.org/typescript-eslint/-/typescript-eslint-8.56.1.tgz",
+      "integrity": "sha512-U4lM6pjmBX7J5wk4szltF7I1cGBHXZopnAXCMXb3+fZ3B/0Z3hq3wS/CCUB2NZBNAExK92mCU2tEohWuwVMsDQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/eslint-plugin": "8.56.1",
+        "@typescript-eslint/parser": "8.56.1",
+        "@typescript-eslint/typescript-estree": "8.56.1",
+        "@typescript-eslint/utils": "8.56.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
+        "typescript": ">=4.8.4 <6.0.0"
+      }
+    },
     "node_modules/undici-types": {
       "version": "7.18.2",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",