Merge pull request #3 from Progmasoft/ci/quality

Add CodeQL, Codecov, Codacy and actionlint

9 files changed, 438 insertions, 2 deletions

diff --git a/.codacy.yml b/.codacy.yml
new file mode 100644
index 0000000..f40d1e9
--- /dev/null
+++ b/.codacy.yml
@@ -0,0 +1,14 @@
+# SPDX-FileCopyrightText: 2026 Progmasoft <support@progmasoft.com>
+# SPDX-License-Identifier: AGPL-3.0-or-later WITH AdditionRef-Progmasoft-Patent-Grant-1.1
+
+# The reference under content/en-US/docs is copied from Progmasoft/tazel and
+# the Tala grammar from Progmasoft/tala; both are reviewed where they live.
+exclude_paths:
+  - "node_modules/**"
+  - ".nuxt/**"
+  - ".output/**"
+  - "coverage/**"
+  - "content/en-US/docs/2.reference/**"
+  - "content/en-US/docs/3.extending/**"
+  - "content/en-US/docs/4.internals/**"
+  - "grammars/**"
diff --git a/.github/codeql/codeql-config.yml b/.github/codeql/codeql-config.yml
new file mode 100644
index 0000000..98084f3
--- /dev/null
+++ b/.github/codeql/codeql-config.yml
@@ -0,0 +1,9 @@
+# SPDX-FileCopyrightText: 2026 Progmasoft <support@progmasoft.com>
+# SPDX-License-Identifier: AGPL-3.0-or-later WITH AdditionRef-Progmasoft-Patent-Grant-1.1
+
+name: tazel.net owned sources
+paths-ignore:
+  - node_modules
+  - .nuxt
+  - .output
+  - content
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2bceab7..05ee91b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -30,7 +30,13 @@ jobs:
       - run: npm ci
       - run: npm run format:check
       - run: npm run check
-      - run: npm test
+      - run: npm run test:coverage
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: tazel-net-coverage
+          path: coverage/lcov.info
+          if-no-files-found: error
+          retention-days: 1
       # Every page in every language is generated; a link to a page that does not exist fails it.
       - run: npm run generate
       - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
@@ -51,3 +57,39 @@ jobs:
       - uses: actions/dependency-review-action@2031cfc080254a8a887f58cffee85186f0e49e48 # v4.9.0
         with:
           fail-on-severity: moderate
+
+  coverage:
+    # Fork PRs cannot receive the OIDC token required for Codecov uploads.
+    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
+    needs: site
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      # Keep the OIDC-capable job apart from the package install and build.
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: tazel-net-coverage
+          path: coverage
+      - uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
+        with:
+          use_oidc: true
+          files: coverage/lcov.info
+          fail_ci_if_error: true
+
+  required:
+    name: CI Required
+    if: always()
+    needs: [site, dependency-review]
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      # Dependency Review runs only on pull requests; skipped counts as passed.
+      - env:
+          SITE: ${{ needs.site.result }}
+          REVIEW: ${{ needs.dependency-review.result }}
+        run: |
+          test "$SITE" = success
+          test "$REVIEW" = success || test "$REVIEW" = skipped
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
new file mode 100644
index 0000000..2ff7852
--- /dev/null
+++ b/.github/workflows/codeql.yml
@@ -0,0 +1,36 @@
+# SPDX-FileCopyrightText: 2026 Progmasoft <support@progmasoft.com>
+# SPDX-License-Identifier: AGPL-3.0-or-later WITH AdditionRef-Progmasoft-Patent-Grant-1.1
+
+name: CodeQL
+on:
+  push:
+    branches: [main]
+  pull_request:
+  schedule:
+    - cron: "17 5 * * 1"
+permissions:
+  actions: read
+  contents: read
+  security-events: write
+jobs:
+  analyze:
+    name: ${{ matrix.language }}
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [actions, javascript-typescript]
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - uses: github/codeql-action/init@33d7b85da1a04171e211befe2c739303b9a4c066 # v4.39.3
+        with:
+          languages: ${{ matrix.language }}
+          build-mode: none
+          config-file: ./.github/codeql/codeql-config.yml
+          queries: security-extended
+      - uses: github/codeql-action/analyze@33d7b85da1a04171e211befe2c739303b9a4c066 # v4.39.3
+        with:
+          category: /language:${{ matrix.language }}
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
index ee34012..cb4653c 100644
--- a/.github/workflows/zizmor.yml
+++ b/.github/workflows/zizmor.yml
@@ -36,3 +36,24 @@ jobs:
 
       - name: Audit the workflows
         uses: zizmorcore/zizmor-action@cc914d7f3750a2d13d75c7f184a1060aa0e9d482 # v0.6.4
+
+  actionlint:
+    name: actionlint
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          persist-credentials: false
+      - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
+        with:
+          go-version: 1.26.10
+          cache: false
+      # actionlint checks the syntax, the expressions and the shell steps of
+      # every workflow; zizmor above checks what makes one unsafe.
+      - name: Lint the workflows
+        run: |
+          go install github.com/rhysd/actionlint/cmd/actionlint@v1.7.12
+          "$(go env GOPATH)/bin/actionlint" -color
diff --git a/.prettierignore b/.prettierignore
index 52ecf77..267e531 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -7,3 +7,4 @@ LICENSE.txt
 PATENTS
 LICENSES/
 content/
+coverage/
diff --git a/codecov.yml b/codecov.yml
new file mode 100644
index 0000000..91e1c24
--- /dev/null
+++ b/codecov.yml
@@ -0,0 +1,19 @@
+# SPDX-FileCopyrightText: 2026 Progmasoft <support@progmasoft.com>
+# SPDX-License-Identifier: AGPL-3.0-or-later WITH AdditionRef-Progmasoft-Patent-Grant-1.1
+
+coverage:
+  precision: 2
+  round: nearest
+  status:
+    project:
+      default:
+        threshold: 2%
+    patch:
+      default:
+        target: 80%
+
+codecov:
+  branch: main
+
+comment:
+  layout: "diff"
diff --git a/package-lock.json b/package-lock.json
index bf5ef6c..f4c7492 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15,6 +15,7 @@
       },
       "devDependencies": {
         "@types/node": "24.19.2",
+        "c8": "12.0.0",
         "prettier": "3.9.10",
         "typescript": "5.9.3",
         "vue-tsc": "3.3.13"
@@ -444,6 +445,16 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@bcoe/v8-coverage": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@bcoe/v8-coverage/-/v8-coverage-1.0.2.tgz",
+      "integrity": "sha512-6zABk/ECA/QYSCQ1NGiVwwbQerUCZ+TQbp64Q3AgmfNvurHH0j8TtXa1qbShXA6qqkpAj4V5W8pP6mLe1mcMqA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/@clack/core": {
       "version": "1.5.1",
       "resolved": "https://registry.npmjs.org/@clack/core/-/core-1.5.1.tgz",
@@ -994,6 +1005,16 @@
         "node": ">=18.0.0"
       }
     },
+    "node_modules/@istanbuljs/schema": {
+      "version": "0.1.6",
+      "resolved": "https://registry.npmjs.org/@istanbuljs/schema/-/schema-0.1.6.tgz",
+      "integrity": "sha512-+Sg6GCR/wy1oSmQDFq4LQDAhm3ETKnorxN+y5nbLULOR3P0c14f2Wurzj3/xqPXtasLFfHd5iRFQ7AJt4KH2cw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/@jridgewell/gen-mapping": {
       "version": "0.3.13",
       "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.13.tgz",
@@ -2823,6 +2844,13 @@
         "@types/unist": "*"
       }
     },
+    "node_modules/@types/istanbul-lib-coverage": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.6.tgz",
+      "integrity": "sha512-2QF/t/auWm0lsy8XtKVPG19v3sSOQlJe/YHZgfjb/KBBHOGSV+J2q/S671rcq9uTBrLAXmZpqJiaQbMT+zNU1w==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/json-schema": {
       "version": "7.0.15",
       "resolved": "https://registry.npmjs.org/@types/json-schema/-/json-schema-7.0.15.tgz",
@@ -3995,6 +4023,50 @@
       "integrity": "sha512-ysOGlgTFbN2/Y6Cg3Iye8YKulHw+R2fNXHrgSmXISQdMnomY6eNDprVdW9R5xBguEqI954+S6709UyiO7B+6OQ==",
       "license": "MIT"
     },
+    "node_modules/c8": {
+      "version": "12.0.0",
+      "resolved": "https://registry.npmjs.org/c8/-/c8-12.0.0.tgz",
+      "integrity": "sha512-4zpJvrd1nKWutnnKC2pXkFmb6iM1l+ffN//o1CzlTNwW7GSOs9a1xrLqkC48nU8oEkjmPZLPiwMsIaOvoF4Pqg==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "@bcoe/v8-coverage": "^1.0.1",
+        "@istanbuljs/schema": "^0.1.3",
+        "find-up": "^5.0.0",
+        "foreground-child": "^3.1.1",
+        "istanbul-lib-coverage": "^3.2.0",
+        "istanbul-lib-report": "^3.0.1",
+        "istanbul-reports": "^3.1.6",
+        "test-exclude": "^8.0.0",
+        "v8-to-istanbul": "^9.0.0",
+        "yargs": "^18.0.0",
+        "yargs-parser": "^21.1.1"
+      },
+      "bin": {
+        "c8": "bin/c8.js"
+      },
+      "engines": {
+        "node": "^20.19.0 || ^22.12.0 || >=23"
+      },
+      "peerDependencies": {
+        "monocart-coverage-reports": "^2"
+      },
+      "peerDependenciesMeta": {
+        "monocart-coverage-reports": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/c8/node_modules/yargs-parser": {
+      "version": "21.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-21.1.1.tgz",
+      "integrity": "sha512-tVpsJW7DdjecAiFpbIB1e3qxIQsE6NoPc5/eTdrbbIC4h0LVsWhnoa3g+m2HclBIujHzsxZ4VJVA+GUuc2/LBw==",
+      "dev": true,
+      "license": "ISC",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/cac": {
       "version": "7.1.0",
       "resolved": "https://registry.npmjs.org/cac/-/cac-7.1.0.tgz",
@@ -5127,6 +5199,23 @@
         "node": ">=8"
       }
     },
+    "node_modules/find-up": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/find-up/-/find-up-5.0.0.tgz",
+      "integrity": "sha512-78/PXT1wlLLDgTzDs7sjq9hzz0vXD+zn+7wypEe4fXQxCmdmqfGsEPQxmiCSQI3ajFV91bVSsvNtrJRiW6nGng==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "locate-path": "^6.0.0",
+        "path-exists": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/flat": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/flat/-/flat-6.0.1.tgz",
@@ -5169,6 +5258,23 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/foreground-child": {
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/foreground-child/-/foreground-child-3.3.1.tgz",
+      "integrity": "sha512-gIXjKqtFuWEgzFRJA9WCQeSJLZDjgJUOMCMzxtvFq/37KojM1BFGufqsCy0r4qSQmYLsZYMeyRqzIWOMup03sw==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "cross-spawn": "^7.0.6",
+        "signal-exit": "^4.0.1"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/fraction.js": {
       "version": "5.3.4",
       "resolved": "https://registry.npmjs.org/fraction.js/-/fraction.js-5.3.4.tgz",
@@ -5478,6 +5584,16 @@
         "url": "https://github.com/sponsors/brc-dd"
       }
     },
+    "node_modules/has-flag": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+      "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/has-property-descriptors": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/has-property-descriptors/-/has-property-descriptors-1.0.2.tgz",
@@ -5860,6 +5976,13 @@
       "integrity": "sha512-+abwxtiEA52GCVIsQqut3S/uKTbUwYIp4Pe/vv+6py5XiXBCqMZHg6pA6Y5qhgLSEys0/cYuPbO0z1QFj5ZCmg==",
       "license": "MIT"
     },
+    "node_modules/html-escaper": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/html-escaper/-/html-escaper-2.0.2.tgz",
+      "integrity": "sha512-H2iMtd0I4Mt5eYiapRdIDjp+XzelXQ0tFE4JS7YFwFevXXMmOp9myNrUvCg0D6ws8iqkRPBfKHgbwig1SmlLfg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/html-void-elements": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/html-void-elements/-/html-void-elements-3.0.0.tgz",
@@ -6348,6 +6471,58 @@
         "node": ">= 4"
       }
     },
+    "node_modules/istanbul-lib-coverage": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-coverage/-/istanbul-lib-coverage-3.2.2.tgz",
+      "integrity": "sha512-O8dpsF+r0WV/8MNRKfnmrtCWhuKjxrq2w+jpzBL5UZKTi2LeVWnWOmWRxFlesJONmc+wLAGvKQZEOanko0LFTg==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/istanbul-lib-report": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/istanbul-lib-report/-/istanbul-lib-report-3.0.1.tgz",
+      "integrity": "sha512-GCfE1mtsHGOELCU8e/Z7YWzpmybrx/+dSTfLrvY8qRmaY6zXTKWn6WQIjaAFw069icm6GVMNkgu0NzI4iPZUNw==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "istanbul-lib-coverage": "^3.0.0",
+        "make-dir": "^4.0.0",
+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/istanbul-lib-report/node_modules/supports-color": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "has-flag": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/istanbul-reports": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/istanbul-reports/-/istanbul-reports-3.2.0.tgz",
+      "integrity": "sha512-HGYWWS/ehqTV3xN10i23tkPkpH46MLCIMFNCaaKNavAXTF1RkqxawEPtnjnGZ6XKSInBKkiOA5BKS+aZiY3AvA==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "html-escaper": "^2.0.0",
+        "istanbul-lib-report": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/jiti": {
       "version": "2.7.0",
       "resolved": "https://registry.npmjs.org/jiti/-/jiti-2.7.0.tgz",
@@ -6841,6 +7016,22 @@
         "url": "https://github.com/sponsors/antfu"
       }
     },
+    "node_modules/locate-path": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-6.0.0.tgz",
+      "integrity": "sha512-iPZK6eYjbxRu3uB4/WZ3EsEIMJFMqAoopl3R+zuq0UjcAm/MO6KCweDgPfP3elTztoKP3KtnVHxTn2NHBSDVUw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "p-locate": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/longest-streak": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/longest-streak/-/longest-streak-3.1.0.tgz",
@@ -6904,6 +7095,22 @@
         "source-map-js": "^1.2.1"
       }
     },
+    "node_modules/make-dir": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-4.0.0.tgz",
+      "integrity": "sha512-hXdUTZYIVOt1Ex//jAQi+wTZZpUpwBj/0QsOzqegb3rGMMeJiSEu5xLHnYfBrRV4RH2+OCSOO95Is/7x1WJ4bw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "semver": "^7.5.3"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/markdown-table": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/markdown-table/-/markdown-table-3.1.0.tgz",
@@ -9022,6 +9229,38 @@
         }
       }
     },
+    "node_modules/p-limit": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-3.1.0.tgz",
+      "integrity": "sha512-TYOanM3wGwNGsZN2cVTYPArw454xnXj5qmWF1bEoAc4+cU/ol7GVh7odevjp1FNHduHc3KZMcFduxU5Xc6uJRQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "yocto-queue": "^0.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/p-locate": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-5.0.0.tgz",
+      "integrity": "sha512-LaNjtRWUBY++zB5nE/NwcaoMylSPk+S+ZHNB1TzdbMJMny6dynpAGt7X/tl/QYq3TIeE6nxHppbo2LGymrG5Pw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "p-limit": "^3.0.2"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/package-manager-detector": {
       "version": "1.9.0",
       "resolved": "https://registry.npmjs.org/package-manager-detector/-/package-manager-detector-1.9.0.tgz",
@@ -9120,6 +9359,16 @@
       "integrity": "sha512-b7uo2UCUOYZcnF/3ID0lulOJi/bafxa1xPe7ZPsammBSpjSWQkjNxlt635YGS2MiR9GjvuXCtz2emr3jbsz98g==",
       "license": "MIT"
     },
+    "node_modules/path-exists": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
+      "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/path-key": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/path-key/-/path-key-3.1.1.tgz",
@@ -10585,6 +10834,21 @@
         "node": ">=10"
       }
     },
+    "node_modules/test-exclude": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-8.0.0.tgz",
+      "integrity": "sha512-ZOffsNrXYggvU1mDGHk54I96r26P8SyMjO5slMKSc7+IWmtB/MQKnEC2fP51imB3/pT6YK5cT5E8f+Dd9KdyOQ==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "@istanbuljs/schema": "^0.1.2",
+        "glob": "^13.0.6",
+        "minimatch": "^10.2.2"
+      },
+      "engines": {
+        "node": "20 || >=22"
+      }
+    },
     "node_modules/text-decoder": {
       "version": "1.2.7",
       "resolved": "https://registry.npmjs.org/text-decoder/-/text-decoder-1.2.7.tgz",
@@ -11330,6 +11594,21 @@
       "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
       "license": "MIT"
     },
+    "node_modules/v8-to-istanbul": {
+      "version": "9.3.0",
+      "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-9.3.0.tgz",
+      "integrity": "sha512-kiGUalWN+rgBJ/1OHZsBtU4rXZOfj/7rKQxULKlIzwzQSvMJUUNgPwJEEh7gU6xEVxC0ahoOBvN2YI8GH6FNgA==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "@jridgewell/trace-mapping": "^0.3.12",
+        "@types/istanbul-lib-coverage": "^2.0.1",
+        "convert-source-map": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=10.12.0"
+      }
+    },
     "node_modules/verkit": {
       "version": "0.5.0",
       "resolved": "https://registry.npmjs.org/verkit/-/verkit-0.5.0.tgz",
@@ -12129,6 +12408,19 @@
         "node": "^20.19.0 || ^22.12.0 || >=23"
       }
     },
+    "node_modules/yocto-queue": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
+      "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/youch": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/youch/-/youch-4.1.1.tgz",
diff --git a/package.json b/package.json
index bcdeb18..1cf1315 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,8 @@
     "check": "nuxt typecheck",
     "test": "node --experimental-strip-types --test tests/*.test.mjs",
     "format": "prettier --write .",
-    "format:check": "prettier --check ."
+    "format:check": "prettier --check .",
+    "test:coverage": "c8 --reporter=lcov --reporter=text --include=app/content/locales.ts npm test"
   },
   "dependencies": {
     "@nuxt/content": "3.16.2",
@@ -23,6 +24,7 @@
   },
   "devDependencies": {
     "@types/node": "24.19.2",
+    "c8": "12.0.0",
     "prettier": "3.9.10",
     "typescript": "5.9.3",
     "vue-tsc": "3.3.13"