Character rendering issue - Cedilla (ç) not displayed

[AdenauerPrange]

Bug Report: Character rendering issue - Cedilla (ç) not displayed

Description:
A character rendering bug is present in the Gemini CLI interface. The cedilla character (ç), common in Portuguese and ther languages, is incorrectly rendered as a standard c. This issue affects both user-typed input and the model's output as displayed in the chat history.

Steps to Reproduce:

1. Initiate a chat session in the Gemini CLI.
2. Type any word containing the cedilla character (e.g., "correção",
   "ação", "garçon").
3. Observe the text in the input field.
4. Send the message and observe the rendered text in the chat history.

Expected Result:
The character ç should be displayed correctly in both the input field and the final chat message. The word should appear as "correção".

Actual Result:
The character ç is incorrectly rendered as c. The word appears as "correcão".

Environment:

• Operating System: GNU/Linux - Debian 13
• Application: Gemini CLI
• User Locale: Likely pt-BR (Brazilian Portuguese), based on conversation context.

Notes:
The user has confirmed that the cedilla character renders correctly in other terminal-based applications (e.g., nano) and GUI applications on the same system. This strongly suggests the issue is isolated to the Gemini CLI's handling of character (e.g., UTF-8) or its specific font rendering, rather than a system-wide configuration problem.

[SunHuawei]

Just saw a PR #12117, but closed