Crash with Google Provider

[mcowger]

Description

The mods application crashes with a "nil pointer dereference" panic when
the google provider is configured and used. The application fails to start
the interactive Bubble Tea TUI, resulting in a terminal restore error and a
crash.

To reproduce

1. Set up the mods configuration file with a
   google provider section.
2. Ensure the environment variable for the API key (e.g., GEMINI_API_KEY )
   is set.
3. Run the mods command with a prompt.
   export GEMINI_API_KEY="your_key_here"
   mods "Explain the theory of relativity"

Expected behavior

The mods application should start its interactive TUI and provide a
response from the Gemini model, without crashing.

Actual behavior

The application crashes immediately before the TUI is displayed, producing
the following error:

❯ mods
Caught goroutine panic:

                       runtime error: invalid memory address or nil

pointer dereference

Restoring terminal...

   ERROR  Couldn't start Bubble Tea program.

  program was killed: program experienced a panic

Environment

• OS: macOS 26.2
• CLI/Terminal: iTerm2
• Mods: v1.8.1

mods Configuration

Here is the relevant section of my configuration file:

# ... other providers like 'openai' may be present ...

google:
  api-key-env: GEMINI_API_KEY
  models:
    gemini-3-flash:
      aliases: ["flash", "gemini"]
      max-input-chars: 392000
    gemini-3-pro:
      aliases: ["pro"]
      max-input-chars: 392000

# ... other settings ...

Additional context

• The crash seems to be directly tied to the google provider configuration.
The issue does not occur if the google section is commented out and a
different provider is used.
• The environment variable GEMINI_API_KEY is confirmed to be set correctly.
• This is a reproducible crash; it happens every time the command is run
with the google provider active.

Version

v1.8.1

Environment

MacOS 26.2 + iTerm2