diff --git a/client/src/components/modals/ConnectionConfigModal.tsx b/client/src/components/modals/ConnectionConfigModal.tsx
index 6cb196e..b1759fc 100644
--- a/client/src/components/modals/ConnectionConfigModal.tsx
+++ b/client/src/components/modals/ConnectionConfigModal.tsx
@@ -2,8 +2,8 @@ import { useState, useEffect, useMemo, type FormEvent } from 'react';
 import { toast } from 'sonner';
 import { Modal } from '../ui/Modal';
 import { Button } from '../ui/Button';
+import { ConfirmDialog } from '../ui/ConfirmDialog';
 import { useRackStore } from '../../store/useRackStore';
-import type { Connection } from '../../types';
 
 interface ConnectionConfigModalProps {
   connectionId: string | null;
@@ -29,8 +29,9 @@ const PRESET_COLORS = [
 ];
 
 export function ConnectionConfigModal({ connectionId, open, onClose }: ConnectionConfigModalProps) {
-  const { racks, setCablingFromPortId, updateConnection, deleteConnection } = useRackStore();
+  const { racks, updateConnection, deleteConnection } = useRackStore();
   const [loading, setLoading] = useState(false);
+  const [confirmDeleteOpen, setConfirmDeleteOpen] = useState(false);
 
   // Synchronously find the connection from the global store
   const connection = useMemo(() => {
@@ -77,11 +78,11 @@ export function ConnectionConfigModal({ connectionId, open, onClose }: Connectio
 
   async function handleDelete() {
     if (!connectionId) return;
-    if (!confirm('Are you sure you want to remove this connection?')) return;
     setLoading(true);
     try {
       await deleteConnection(connectionId);
       toast.success('Connection removed');
+      setConfirmDeleteOpen(false);
       onClose();
     } catch (err) {
       toast.error(err instanceof Error ? err.message : 'Delete failed');
@@ -93,89 +94,107 @@ export function ConnectionConfigModal({ connectionId, open, onClose }: Connectio
   if (!open || !connection) return null;
 
   return (
-    <Modal open={open} onClose={() => !loading && onClose()} title="Edit Connection">
-      <div className="flex flex-col gap-6">
-        <p className="text-sm text-slate-400">
-          Customize the cable style and color.
-        </p>
+    <>
+      <Modal open={open} onClose={() => !loading && onClose()} title="Edit Connection">
+        <div className="flex flex-col gap-6">
+          <p className="text-sm text-slate-400">
+            Customize the cable style and color.
+          </p>
 
-        <form id="connection-form" onSubmit={handleSubmit} className="flex flex-col gap-5">
-          {/* Label Name */}
-          <div className="flex flex-col gap-1.5">
-            <label className="text-sm font-semibold text-slate-300">Cable Label (Optional)</label>
-            <input
-              type="text"
-              value={label}
-              onChange={(e) => setLabel(e.target.value)}
-              placeholder="e.g. Uplink to Core"
-              className="px-3 py-2 rounded-md bg-slate-900 border border-slate-700 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-colors"
-            />
-          </div>
+          <form id="connection-form" onSubmit={handleSubmit} className="flex flex-col gap-5">
+            <div className="flex flex-col gap-1.5">
+              <label htmlFor="connection-label" className="text-sm font-semibold text-slate-300">Cable Label (Optional)</label>
+              <input
+                id="connection-label"
+                type="text"
+                value={label}
+                onChange={(e) => setLabel(e.target.value)}
+                placeholder="e.g. Uplink to Core"
+                className="px-3 py-2 rounded-md bg-slate-900 border border-slate-700 text-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500 transition-colors"
+              />
+            </div>
 
-          {/* Color Picker */}
-          <div className="flex flex-col gap-2">
-            <label className="text-sm font-semibold text-slate-300">Cable Color</label>
-            <div className="flex flex-wrap gap-2">
-              {PRESET_COLORS.map((c) => (
-                <button
-                  key={c}
-                  type="button"
-                  onClick={() => setColor(c)}
-                  style={{ backgroundColor: c }}
-                  className={`w-8 h-8 rounded-full border-2 transition-all hover:scale-110 ${
-                    color === c ? 'border-white scale-110 shadow-lg' : 'border-transparent'
-                  }`}
-                  aria-label={`Select color ${c}`}
-                />
-              ))}
-              <div className="relative w-8 h-8 rounded-full overflow-hidden border-2 border-slate-700">
-                <input
-                  type="color"
-                  value={color}
-                  onChange={(e) => setColor(e.target.value)}
-                  className="absolute -top-2 -left-2 w-12 h-12 cursor-pointer"
-                  title="Custom color"
-                />
+            <div className="flex flex-col gap-2">
+              <label className="text-sm font-semibold text-slate-300">Cable Color</label>
+              <div className="flex flex-wrap gap-2">
+                {PRESET_COLORS.map((c) => (
+                  <button
+                    key={c}
+                    type="button"
+                    onClick={() => setColor(c)}
+                    style={{ backgroundColor: c }}
+                    className={`w-8 h-8 rounded-full border-2 transition-all hover:scale-110 ${
+                      color === c ? 'border-white scale-110 shadow-lg' : 'border-transparent'
+                    }`}
+                    aria-label={`Select color ${c}`}
+                  />
+                ))}
+                <div className="relative w-8 h-8 rounded-full overflow-hidden border-2 border-slate-700">
+                  <input
+                    type="color"
+                    value={color}
+                    onChange={(e) => setColor(e.target.value)}
+                    className="absolute -top-2 -left-2 w-12 h-12 cursor-pointer"
+                    title="Custom color"
+                    aria-label="Select custom cable color"
+                  />
+                </div>
               </div>
             </div>
-          </div>
 
-          {/* Edge Style */}
-          <div className="flex flex-col gap-2">
-            <label className="text-sm font-semibold text-slate-300">Curve Style</label>
-            <div className="grid grid-cols-3 gap-2">
-              {EDGE_STYLES.map((style) => (
-                <button
-                  key={style.value}
-                  type="button"
-                  onClick={() => setEdgeType(style.value)}
-                  className={`px-3 py-2 rounded-md border text-xs font-medium transition-all ${
-                    edgeType === style.value
-                      ? 'bg-blue-500/10 border-blue-500 text-blue-400'
-                      : 'bg-slate-900 border-slate-700 text-slate-400 hover:border-slate-500 hover:text-slate-200'
-                  }`}
-                >
-                  {style.label}
-                </button>
-              ))}
+            <div className="flex flex-col gap-2">
+              <label className="text-sm font-semibold text-slate-300">Curve Style</label>
+              <div className="grid grid-cols-3 gap-2">
+                {EDGE_STYLES.map((style) => (
+                  <button
+                    key={style.value}
+                    type="button"
+                    onClick={() => setEdgeType(style.value)}
+                    className={`px-3 py-2 rounded-md border text-xs font-medium transition-all ${
+                      edgeType === style.value
+                        ? 'bg-blue-500/10 border-blue-500 text-blue-400'
+                        : 'bg-slate-900 border-slate-700 text-slate-400 hover:border-slate-500 hover:text-slate-200'
+                    }`}
+                    aria-pressed={edgeType === style.value}
+                  >
+                    {style.label}
+                  </button>
+                ))}
+              </div>
+            </div>
+          </form>
+
+          <div className="flex items-center justify-between pt-4 border-t border-slate-800">
+            <Button
+              type="button"
+              variant="ghost"
+              className="text-red-400 hover:text-red-300"
+              onClick={() => setConfirmDeleteOpen(true)}
+              disabled={loading}
+            >
+              Delete Connection
+            </Button>
+            <div className="flex gap-2">
+              <Button type="button" variant="ghost" onClick={onClose} disabled={loading}>
+                Cancel
+              </Button>
+              <Button type="submit" form="connection-form" variant="primary" loading={loading}>
+                Save Changes
+              </Button>
             </div>
           </div>
-        </form>
-
-        <div className="flex items-center justify-between pt-4 border-t border-slate-800">
-          <Button type="button" variant="ghost" className="text-red-400 hover:text-red-300" onClick={handleDelete} disabled={loading}>
-            Delete Connection
-          </Button>
-          <div className="flex gap-2">
-            <Button type="button" variant="ghost" onClick={onClose} disabled={loading}>
-              Cancel
-            </Button>
-            <Button type="submit" form="connection-form" variant="primary" loading={loading}>
-              Save Changes
-            </Button>
-          </div>
         </div>
-      </div>
-    </Modal>
+      </Modal>
+
+      <ConfirmDialog
+        open={confirmDeleteOpen}
+        onClose={() => !loading && setConfirmDeleteOpen(false)}
+        onConfirm={handleDelete}
+        title="Delete Connection"
+        message="Are you sure you want to remove this connection?"
+        confirmLabel="Delete Connection"
+        loading={loading}
+      />
+    </>
   );
 }
diff --git a/client/src/components/rack/ConnectionLayer.tsx b/client/src/components/rack/ConnectionLayer.tsx
index cb30de7..9e1a0e6 100644
--- a/client/src/components/rack/ConnectionLayer.tsx
+++ b/client/src/components/rack/ConnectionLayer.tsx
@@ -1,6 +1,5 @@
 import { useEffect, useState, useMemo, useCallback } from 'react';
 import { useRackStore } from '../../store/useRackStore';
-import { cn } from '../../lib/utils';
 
 export function ConnectionLayer() {
   const { racks, cablingFromPortId, setActiveConfigConnectionId } = useRackStore();
@@ -171,12 +170,21 @@ export function ConnectionLayer() {
               strokeWidth="10"
               fill="none"
               className={isShiftPressed ? 'pointer-events-auto cursor-pointer' : 'pointer-events-none'}
+              tabIndex={0}
+              role="button"
+              aria-label="Edit connection"
               onClick={(e) => {
                 if (e.shiftKey) {
                   e.stopPropagation();
                   setActiveConfigConnectionId(conn.id);
                 }
               }}
+              onKeyDown={(e) => {
+                if (e.key === 'Enter' || e.key === ' ') {
+                  e.preventDefault();
+                  setActiveConfigConnectionId(conn.id);
+                }
+              }}
             />
           </g>
         );
diff --git a/eslint.config.js b/eslint.config.js
new file mode 100644
index 0000000..d97662f
--- /dev/null
+++ b/eslint.config.js
@@ -0,0 +1,43 @@
+const js = require('@eslint/js');
+const globals = require('globals');
+const tseslint = require('typescript-eslint');
+
+module.exports = tseslint.config(
+  {
+    ignores: ['dist/**', 'client/**', 'node_modules/**'],
+  },
+  js.configs.recommended,
+  ...tseslint.configs.recommendedTypeChecked,
+  {
+    files: ['server/**/*.ts', 'scripts/**/*.ts', 'prisma/seed.ts'],
+    languageOptions: {
+      parserOptions: {
+        project: ['./tsconfig.json'],
+        tsconfigRootDir: __dirname,
+      },
+      globals: {
+        ...globals.node,
+      },
+    },
+    rules: {
+      '@typescript-eslint/no-misused-promises': [
+        'error',
+        {
+          checksVoidReturn: {
+            arguments: false,
+          },
+        },
+      ],
+      '@typescript-eslint/no-floating-promises': 'error',
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        {
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+          caughtErrorsIgnorePattern: '^_',
+        },
+      ],
+      '@typescript-eslint/no-unsafe-assignment': 'off',
+    },
+  }
+);
diff --git a/package-lock.json b/package-lock.json
index 783b676..7215cb8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,6 +17,7 @@
         "jsonwebtoken": "^9.0.2"
       },
       "devDependencies": {
+        "@eslint/js": "^9.39.4",
         "@types/better-sqlite3": "^7.6.12",
         "@types/cookie-parser": "^1.4.8",
         "@types/cors": "^2.8.17",
@@ -25,11 +26,13 @@
         "@types/node": "^22.9.0",
         "concurrently": "^9.1.0",
         "eslint": "^9.14.0",
+        "globals": "^17.4.0",
         "nodemon": "^3.1.7",
         "prettier": "^3.3.3",
         "prisma": "^5.22.0",
         "tsx": "^4.19.2",
         "typescript": "^5.6.3",
+        "typescript-eslint": "^8.57.2",
         "vitest": "^2.1.5"
       }
     },
@@ -582,6 +585,19 @@
         "url": "https://opencollective.com/eslint"
       }
     },
+    "node_modules/@eslint/eslintrc/node_modules/globals": {
+      "version": "14.0.0",
+      "resolved": "https://registry.npmjs.org/globals/-/globals-14.0.0.tgz",
+      "integrity": "sha512-oahGvuMGQlPw/ivIYBjVSrWAfWLBeku5tpPE2fOPLi+WHffIWbuh2tCjhyQhTBPMf5E9jDEH4FOmTYgYwbKwtQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/@eslint/js": {
       "version": "9.39.4",
       "resolved": "https://registry.npmjs.org/@eslint/js/-/js-9.39.4.tgz",
@@ -1276,6 +1292,288 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@typescript-eslint/eslint-plugin": {
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-8.57.2.tgz",
+      "integrity": "sha512-NZZgp0Fm2IkD+La5PR81sd+g+8oS6JwJje+aRWsDocxHkjyRw0J5L5ZTlN3LI1LlOcGL7ph3eaIUmTXMIjLk0w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@eslint-community/regexpp": "^4.12.2",
+        "@typescript-eslint/scope-manager": "8.57.2",
+        "@typescript-eslint/type-utils": "8.57.2",
+        "@typescript-eslint/utils": "8.57.2",
+        "@typescript-eslint/visitor-keys": "8.57.2",
+        "ignore": "^7.0.5",
+        "natural-compare": "^1.4.0",
+        "ts-api-utils": "^2.4.0"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "@typescript-eslint/parser": "^8.57.2",
+        "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
+        "typescript": ">=4.8.4 <6.0.0"
+      }
+    },
+    "node_modules/@typescript-eslint/eslint-plugin/node_modules/ignore": {
+      "version": "7.0.5",
+      "resolved": "https://registry.npmjs.org/ignore/-/ignore-7.0.5.tgz",
+      "integrity": "sha512-Hs59xBNfUIunMFgWAbGX5cq6893IbWg4KnrjbYwX3tx0ztorVgTDA6B2sxf8ejHJ4wz8BqGUMYlnzNBer5NvGg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 4"
+      }
+    },
+    "node_modules/@typescript-eslint/parser": {
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-8.57.2.tgz",
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+      "resolved": "https://registry.npmjs.org/@typescript-eslint/project-service/-/project-service-8.57.2.tgz",
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+      "license": "MIT",
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+      }
+    },
+    "node_modules/@typescript-eslint/typescript-estree/node_modules/brace-expansion": {
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.5.tgz",
+      "integrity": "sha512-VZznLgtwhn+Mact9tfiwx64fA9erHH/MCXEUfB/0bX/6Fz6ny5EGTXYltMocqg4xFAQZtnO3DHWWXi8RiuN7cQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^4.0.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
+    "node_modules/@typescript-eslint/typescript-estree/node_modules/minimatch": {
+      "version": "10.2.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.4.tgz",
+      "integrity": "sha512-oRjTw/97aTBN0RHbYCdtF1MQfvusSIBQM0IZEgzl6426+8jSC0nF1a/GmnVLpfB9yyr6g6FTqWqiZVbxrtaCIg==",
+      "dev": true,
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "brace-expansion": "^5.0.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/@typescript-eslint/utils": {
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/utils/-/utils-8.57.2.tgz",
+      "integrity": "sha512-krRIbvPK1ju1WBKIefiX+bngPs+odIQUtR7kymzPfo1POVw3jlF+nLkmexdSSd4UCbDcQn+wMBATOOmpBbqgKg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@eslint-community/eslint-utils": "^4.9.1",
+        "@typescript-eslint/scope-manager": "8.57.2",
+        "@typescript-eslint/types": "8.57.2",
+        "@typescript-eslint/typescript-estree": "8.57.2"
+      },
+      "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/@typescript-eslint/visitor-keys": {
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/@typescript-eslint/visitor-keys/-/visitor-keys-8.57.2.tgz",
+      "integrity": "sha512-zhahknjobV2FiD6Ee9iLbS7OV9zi10rG26odsQdfBO/hjSzUQbkIYgda+iNKK1zNiW2ey+Lf8MU5btN17V3dUw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/types": "8.57.2",
+        "eslint-visitor-keys": "^5.0.0"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      }
+    },
+    "node_modules/@typescript-eslint/visitor-keys/node_modules/eslint-visitor-keys": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-5.0.1.tgz",
+      "integrity": "sha512-tD40eHxA35h0PEIZNeIjkHoDR4YjjJp34biM0mDvplBe//mB+IHCqHDGV7pxF+7MklTvighcCPPZC7ynWyjdTA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": "^20.19.0 || ^22.13.0 || >=24"
+      },
+      "funding": {
+        "url": "https://opencollective.com/eslint"
+      }
+    },
     "node_modules/@vitest/expect": {
       "version": "2.1.9",
       "resolved": "https://registry.npmjs.org/@vitest/expect/-/expect-2.1.9.tgz",
@@ -2741,9 +3039,9 @@
       }
     },
     "node_modules/globals": {
-      "version": "14.0.0",
-      "resolved": "https://registry.npmjs.org/globals/-/globals-14.0.0.tgz",
-      "integrity": "sha512-oahGvuMGQlPw/ivIYBjVSrWAfWLBeku5tpPE2fOPLi+WHffIWbuh2tCjhyQhTBPMf5E9jDEH4FOmTYgYwbKwtQ==",
+      "version": "17.4.0",
+      "resolved": "https://registry.npmjs.org/globals/-/globals-17.4.0.tgz",
+      "integrity": "sha512-hjrNztw/VajQwOLsMNT1cbJiH2muO3OROCHnbehc8eY5JyD2gqz4AcMHPqgaOR59DjgUjYAYLeH699g/eWi2jw==",
       "dev": true,
       "license": "MIT",
       "engines": {
@@ -4337,6 +4635,54 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/tinyglobby": {
+      "version": "0.2.15",
+      "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.15.tgz",
+      "integrity": "sha512-j2Zq4NyQYG5XMST4cbs02Ak8iJUdxRM0XI5QyxXuZOzKOINmWurp3smXu3y5wDcJrptwpSjgXHzIQxR0omXljQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "fdir": "^6.5.0",
+        "picomatch": "^4.0.3"
+      },
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/SuperchupuDev"
+      }
+    },
+    "node_modules/tinyglobby/node_modules/fdir": {
+      "version": "6.5.0",
+      "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
+      "integrity": "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "peerDependencies": {
+        "picomatch": "^3 || ^4"
+      },
+      "peerDependenciesMeta": {
+        "picomatch": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/tinyglobby/node_modules/picomatch": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
     "node_modules/tinypool": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/tinypool/-/tinypool-1.1.1.tgz",
@@ -4409,6 +4755,19 @@
         "tree-kill": "cli.js"
       }
     },
+    "node_modules/ts-api-utils": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.5.0.tgz",
+      "integrity": "sha512-OJ/ibxhPlqrMM0UiNHJ/0CKQkoKF243/AEmplt3qpRgkW8VG7IfOS41h7V8TjITqdByHzrjcS/2si+y4lIh8NA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18.12"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4"
+      }
+    },
     "node_modules/tslib": {
       "version": "2.8.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
@@ -4488,6 +4847,30 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/typescript-eslint": {
+      "version": "8.57.2",
+      "resolved": "https://registry.npmjs.org/typescript-eslint/-/typescript-eslint-8.57.2.tgz",
+      "integrity": "sha512-VEPQ0iPgWO/sBaZOU1xo4nuNdODVOajPnTIbog2GKYr31nIlZ0fWPoCQgGfF3ETyBl1vn63F/p50Um9Z4J8O8A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/eslint-plugin": "8.57.2",
+        "@typescript-eslint/parser": "8.57.2",
+        "@typescript-eslint/typescript-estree": "8.57.2",
+        "@typescript-eslint/utils": "8.57.2"
+      },
+      "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/undefsafe": {
       "version": "2.0.5",
       "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.5.tgz",
diff --git a/package.json b/package.json
index 1037c41..fcba369 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,7 @@
     "jsonwebtoken": "^9.0.2"
   },
   "devDependencies": {
+    "@eslint/js": "^9.39.4",
     "@types/better-sqlite3": "^7.6.12",
     "@types/cookie-parser": "^1.4.8",
     "@types/cors": "^2.8.17",
@@ -35,11 +36,13 @@
     "@types/node": "^22.9.0",
     "concurrently": "^9.1.0",
     "eslint": "^9.14.0",
+    "globals": "^17.4.0",
     "nodemon": "^3.1.7",
     "prettier": "^3.3.3",
     "prisma": "^5.22.0",
     "tsx": "^4.19.2",
     "typescript": "^5.6.3",
+    "typescript-eslint": "^8.57.2",
     "vitest": "^2.1.5"
   },
   "prisma": {
diff --git a/server/routes/connections.ts b/server/routes/connections.ts
index 3aee8f7..1624c10 100644
--- a/server/routes/connections.ts
+++ b/server/routes/connections.ts
@@ -1,5 +1,6 @@
 import { Router } from 'express';
 import * as connService from '../services/connectionService';
+import { ok } from '../types/index';
 
 const router = Router();
 
@@ -8,7 +9,7 @@ router.post('/', async (req, res, next) => {
   try {
     const { fromPortId, toPortId, color, label, edgeType } = req.body;
     const conn = await connService.createConnection({ fromPortId, toPortId, color, label, edgeType });
-    res.status(201).json(conn);
+    res.status(201).json(ok(conn));
   } catch (err) {
     next(err);
   }
@@ -19,7 +20,7 @@ router.put('/:id', async (req, res, next) => {
   try {
     const { color, label, edgeType } = req.body;
     const conn = await connService.updateConnection(req.params.id, { color, label, edgeType });
-    res.json(conn);
+    res.json(ok(conn));
   } catch (err) {
     next(err);
   }
@@ -29,7 +30,7 @@ router.put('/:id', async (req, res, next) => {
 router.delete('/:id', async (req, res, next) => {
   try {
     await connService.deleteConnection(req.params.id);
-    res.json({ success: true });
+    res.json(ok(null));
   } catch (err) {
     next(err);
   }
@@ -39,7 +40,7 @@ router.delete('/:id', async (req, res, next) => {
 router.delete('/ports/:p1/:p2', async (req, res, next) => {
   try {
     await connService.deleteByPorts(req.params.p1, req.params.p2);
-    res.json({ success: true });
+    res.json(ok(null));
   } catch (err) {
     next(err);
   }