locale file diff derived

{
  "input": {
    "body": {
      "after": {
        "app": {
          "title": "Dashboard",
          "greeting": "Welcome back, {name}"
        },
        "errors": {
          "retry": "Try again",
          "generic": "Something went wrong"
        },
        "checkout": {
          "submit": "Pay now"
        }
      },
      "before": {
        "app": {
          "title": "Dashboard",
          "greeting": "Hello, {name}"
        },
        "banner": {
          "promo": "Half price this week"
        },
        "errors": {
          "retry": "Try again",
          "generic": "Something went wrong"
        }
      },
      "translations": [
        {
          "locale": "de",
          "messages": {
            "app": {
              "title": "Übersicht",
              "greeting": "Hallo, {name}"
            },
            "banner": {
              "promo": "Diese Woche halber Preis"
            },
            "errors": {
              "retry": "Erneut",
              "generic": "Fehler"
            }
          }
        }
      ]
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  },
  "output": {
    "type": "json",
    "example": {
      "limits": {
        "maxKeys": 50000,
        "maxLocales": 60,
        "maxFindings": 500,
        "maxFileBytes": 2097152,
        "maxValueLength": 32768
      },
      "passed": false,
      "complete": false,
      "findings": [
        {
          "key": "banner.promo",
          "code": "KEY_REMOVED",
          "detail": "banner.promo is gone from the base. Every translation of it is now dead weight, and anything still referencing it shows the key."
        },
        {
          "key": "app.greeting",
          "code": "BASE_TEXT_CHANGED",
          "detail": "app.greeting changed in the base. Every translation of it is now a translation of the previous text."
        },
        {
          "key": "app.greeting",
          "code": "TRANSLATION_NOW_STALE",
          "detail": "de still has the previous translation of app.greeting, whose base text changed. Nothing in the file marks it, so it reads as translated and says the old thing.",
          "locale": "de"
        }
      ],
      "unchanged": false,
      "added_keys": [
        "checkout.submit"
      ],
      "request_id": "example-request",
      "service_id": "locale_file_diff",
      "assumptions": [
        "A changed base string is the central finding: every translation of it is now a translation of the previous text, nothing in the translation file marks that, and the diff is the only place it is visibl...",
        "An added key is noted rather than found, because it breaks nothing that already worked, while the translations missing it are reported per locale as outstanding work.",
        "A removed key is a finding rather than a note, because anything still referencing it shows the key in the interface."
      ],
      "limitations": [
        "The two base versions and the translations supplied. Whether a base change was significant enough to need retranslating is a judgement this does not make.",
        "unchanged is true only when the two base versions were identical and nothing was left undetermined."
      ],
      "observed_at": "2026-10-02T00:00:00.000Z",
      "changed_keys": [
        "app.greeting"
      ],
      "not_examined": [
        "KEY_ADDED: checkout.submit is new, so every locale is missing it until it is translated.",
        "TRANSLATION_ORPHANED: de still has banner.promo, which the base no longer defines."
      ],
      "removed_keys": [
        "banner.promo"
      ],
      "finding_count": 4,
      "added_key_count": 1,
      "after_key_count": 5,
      "service_version": "1.0.0",
      "before_key_count": 5,
      "findings_by_code": {
        "KEY_REMOVED": 1,
        "BASE_TEXT_CHANGED": 1,
        "TRANSLATION_NOW_STALE": 1,
        "NEW_KEYS_NOT_TRANSLATED": 1
      },
      "changed_key_count": 1,
      "removed_key_count": 1,
      "translation_locale_count": 1
    }
  }
}