chore: add engineering improvements

- Configure Prettier with unified code style rules
- Add husky + lint-staged for automated pre-commit checks
- Add commitlint to enforce conventional commit messages
- Add PR check workflow for CI automation
- Auto-format all files with Prettier
- Fix TypeScript any types in field-crypto.ts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.commitlintrc.json

@@ -0,0 +1,21 @@
+{
+  "extends": ["@commitlint/config-conventional"],
+  "rules": {
+    "type-enum": [
+      2,
+      "always",
+      [
+        "feat",
+        "fix",
+        "docs",
+        "style",
+        "refactor",
+        "perf",
+        "test",
+        "chore",
+        "revert"
+      ]
+    ],
+    "subject-case": [0]
+  }
+}

.github/workflows/pr-check.yml

@@ -0,0 +1,34 @@
+name: PR Check
+
+on:
+  pull_request:
+    branches: [main, dev-*]
+
+jobs:
+  lint-and-build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run ESLint
+        run: npx eslint .
+
+      - name: Run Prettier check
+        run: npx prettier --check .
+
+      - name: Type check
+        run: npx tsc --noEmit
+
+      - name: Build
+        run: npm run build

.husky/commit-msg

@@ -0,0 +1 @@
+npx --no -- commitlint --edit $1

.husky/pre-commit

@@ -0,0 +1 @@
+npx lint-staged

.prettierignore

@@ -1,3 +1,23 @@
 # Ignore artifacts:
 build
 coverage
+dist
+dist-ssr
+release
+
+# Dependencies
+node_modules
+package-lock.json
+pnpm-lock.yaml
+yarn.lock
+
+# Database
+db
+
+# Environment
+.env
+
+# Misc
+*.min.js
+*.min.css
+openapi.json

.prettierrc

@@ -1 +1,9 @@
-{}
+{
+  "semi": true,
+  "singleQuote": false,
+  "tabWidth": 2,
+  "trailingComma": "all",
+  "printWidth": 80,
+  "arrowParens": "always",
+  "endOfLine": "lf"
+}

package.json

@@ -20,7 +20,8 @@
     "build:linux-appimage": "npm run build && electron-builder --linux AppImage",
     "build:linux-targz": "npm run build && electron-builder --linux tar.gz",
     "test:encryption": "tsc -p tsconfig.node.json && node ./dist/backend/backend/utils/encryption-test.js",
-    "migrate:encryption": "tsc -p tsconfig.node.json && node ./dist/backend/backend/utils/encryption-migration.js"
+    "migrate:encryption": "tsc -p tsconfig.node.json && node ./dist/backend/backend/utils/encryption-migration.js",
+    "prepare": "husky"
   },
   "dependencies": {
     "@codemirror/autocomplete": "^6.18.7",
@@ -105,6 +106,8 @@
     "zod": "^4.0.5"
   },
   "devDependencies": {
+    "@commitlint/cli": "^20.1.0",
+    "@commitlint/config-conventional": "^20.0.0",
     "@eslint/js": "^9.34.0",
     "@types/better-sqlite3": "^7.6.13",
     "@types/cors": "^2.8.19",
@@ -123,9 +126,20 @@
     "eslint-plugin-react-hooks": "^5.2.0",
     "eslint-plugin-react-refresh": "^0.4.20",
     "globals": "^16.3.0",
+    "husky": "^9.1.7",
+    "lint-staged": "^16.2.3",
     "prettier": "3.6.2",
     "typescript": "~5.9.2",
     "typescript-eslint": "^8.40.0",
     "vite": "^7.1.5"
+  },
+  "lint-staged": {
+    "*.{js,jsx,ts,tsx}": [
+      "eslint --fix",
+      "prettier --write"
+    ],
+    "*.{json,css,md}": [
+      "prettier --write"
+    ]
   }
 }

src/backend/utils/field-crypto.ts

@@ -27,12 +27,7 @@ class FieldCrypto {
       "oidc_identifier",
       "oidcIdentifier",
     ]),
-    ssh_data: new Set([
-      "password",
-      "key",
-      "key_password",
-      "keyPassword",
-    ]),
+    ssh_data: new Set(["password", "key", "key_password", "keyPassword"]),
     ssh_credentials: new Set([
       "password",
       "private_key",
@@ -60,7 +55,11 @@ class FieldCrypto {
     );
 
     const iv = crypto.randomBytes(this.IV_LENGTH);
-    const cipher = crypto.createCipheriv(this.ALGORITHM, fieldKey, iv) as any;
+    const cipher = crypto.createCipheriv(
+      this.ALGORITHM,
+      fieldKey,
+      iv,
+    ) as crypto.CipherGCM;
 
     let encrypted = cipher.update(plaintext, "utf8", "hex");
     encrypted += cipher.final("hex");
@@ -102,7 +101,7 @@ class FieldCrypto {
       this.ALGORITHM,
       fieldKey,
       Buffer.from(encrypted.iv, "hex"),
-    ) as any;
+    ) as crypto.DecipherGCM;
     decipher.setAuthTag(Buffer.from(encrypted.tag, "hex"));
 
     let decrypted = decipher.update(encrypted.data, "hex", "utf8");