Fixes #1108

Problem

When configuring ENABLED_SERVICES in the config file, users must use the UI display name (e.g. "Ali Qwen-Translation") to enable a service. However, translators also have an internal name attribute (e.g. "qwen-mt" for QwenMtTranslator), which is the name used in the translators list of the config file. This mismatch is confusing — users naturally try using the same name ("qwen-mt") in both ENABLED_SERVICES and translators, but only the translators lookup works with the internal name.

Solution

Extend the ENABLED_SERVICES filter in gui.py to match services by either their display name (the service_map key) or their translator internal name attribute. This way both of the following configs work:

// Using display name
"ENABLED_SERVICES": ["Ali Qwen-Translation"]

// Using internal translator name (now also supported)
"ENABLED_SERVICES": ["qwen-mt"]

Testing

• Verified with a quick logic test that "qwen-mt" now resolves to "Ali Qwen-Translation" in the service list
• Verified backward compatibility: existing configs using display names continue to work