feat: Added a translation key for “Password is too weak

[cyril59310]

_{ℹ️ To keep reviews fast and effective, please make sure you’ve read our pull request guidelines}

📝 Summary of changes done and why they are done

• Added a translation key for “Password is too weak

📋 Related issues

• Relates to Error messages like "password to weak" are not currently translatable #6609
• Resolves Error messages like "password to weak" are not currently translatable #6609

📄 Checklist

Please follow this checklist to avoid unnecessary back and forth (click to expand)

• ⚠️ If there are Breaking change (a fix or feature that alters existing functionality in a way that could cause issues) I have called them out
• 🧠 I have disclosed any use of LLMs/AI in this contribution and reviewed all generated content.
  I understand that I am responsible for and able to explain every line of code I submit.
• 🔍 My code adheres to the style guidelines of this project.
• ⚠️ My changes generate no new warnings.
• 🛠️ I have reviewed and tested my code.
• 📝 I have commented my code, especially in hard-to-understand areas (e.g., using JSDoc for methods).
• 🤖 I added or updated automated tests where appropriate.
• 📄 Documentation updates are included (if applicable).
• 🔒 I have considered potential security impacts and mitigated risks.
• [] 🧰 Dependency updates are listed and explained.

📷 Screenshots or Visual Changes

• UI Modifications: Highlight any changes made to the user interface.
• Before & After: Include screenshots or comparisons (if applicable).

Event	Before	After
UP
DOWN
Certificate-expiry
Testing

[cyril59310]

I’ve just realized that many other keys were also missing for other features. I’ll work on adding them and open a new PR once this one is ready

[CommanderStorm]

While this fixes the specific problem, I don't think it is a good fix.
Lets fix this more properly - How about:

• we change it like this

  Suggested change

  	let err = new Error("passwordTooWeak");
  	err.msgi18n = true;
  	throw err;
  	throw new TranslatableError("passwordTooWeak");

• add a small class for this

• change the following test to also have a regex for this:

  • uptime-kuma/test/backend-test/check-translations.test.js

    Line 24 in f0df77e

    it("should not have missing translation keys", () => {

[CommanderStorm]

I’ve just realized that many other keys were also missing for other features

Yea, more of a structural problem

[CommanderStorm]

Lays some nice ground work to build on 👍🏻

[cyril59310]

• A screenshot of a failing test when a translation key is missing

[CommanderStorm]

I would have trusted you on that one 😉
Can I merge it, or do you want to add more of the TranslationErrors?

[cyril59310]

I would have trusted you on that one 😉
Can I merge it, or do you want to add more of the TranslationErrors?

You can merge this; I’ll work on a new PR to add the missing translation keys 😉

[Copilot]

Pull request overview

This PR adds internationalization support for the "Password is too weak" error message by introducing a new TranslatableError class for backend error messages. The changes enable proper translation of password validation errors on both the initial setup and password change flows.

• Introduced a new TranslatableError class for backend errors with translation support
• Added the passwordTooWeak translation key to en.json
• Updated password validation in both setup and change password flows to use translatable errors
• Extended the translation test to validate TranslatableError usage in server-side code

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
server/translatable-error.js	New error class that wraps translation keys and marks errors as translatable via msgi18n flag
src/lang/en.json	Added passwordTooWeak translation key with the password requirements message
server/server.js	Replaced hardcoded error strings with TranslatableError in setup and change password handlers, added msgi18n flag to error callbacks
test/backend-test/check-translations.test.js	Extended test to scan server directory and detect TranslatableError usage, ensuring all translation keys exist