Enhance routing and language switch tests; refactor shortcode handling

[danielmarv]

Description

Brief description of changes made in this PR.

Type of Change

• 🐛 Bug fix
• ✨ New feature
• 📝 Documentation update
• 🎨 Style/formatting
• ♻️ Refactor
• 🔧 Configuration
• ⚡ Performance
• 🧪 Tests
• 🔐 Security

Related Issue(s)

Closes #ISSUE_NUMBER

Changes Made

• Change 1
• Change 2
• Change 3

How to Test

1. Step 1
2. Step 2
3. Verify the expected behavior

Checklist

• Code follows project style guidelines
• Self-review conducted
• Comments added for complex logic
• Documentation updated (if needed)
• No new warnings generated
• Tests added/updated (if applicable)
• All tests passing locally

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