fix: auto-enable Ollama provider when configured via environment variables

[embire2]

Summary

This PR fixes issue #1881 where the Ollama local AI provider was not appearing in the UI despite being correctly configured in the .env file.

Problem

• Local providers (Ollama, LMStudio, OpenAILike) were disabled by default in the UI
• No mechanism existed to detect environment-configured providers
• Users had to manually enable Ollama even when properly configured via .env

Solution

The fix implements automatic detection and enablement of environment-configured local providers:

1. Server-side detection: Modified API endpoints to detect which local providers are configured via environment variables
2. Client-side auto-enable: Automatically enables detected providers on first load (when no saved settings exist)
3. Preserves user choice: Respects manual configuration if user has already saved provider settings

Changes Made

/app/routes/_index.tsx

• Added loader to detect configured providers from environment
• Implements auto-enable logic in the Index component using useLoaderData
• Only enables providers if no saved settings exist (first-time users)

/app/routes/api.models.ts

• Extended ModelsResponse interface to include configuredProviders array
• Added detection logic for OLLAMA_API_BASE_URL, LMSTUDIO_API_BASE_URL, and OPENAI_LIKE_API_BASE_URL

/app/lib/stores/settings.ts

• Cleaned up provider initialization logic
• Removed problematic async fetch call

Testing

✅ Tested with fresh installation - Ollama appears immediately when configured
✅ Tested with existing saved settings - User preferences preserved
✅ Tested with multiple local providers configured
✅ Build and lint checks pass

Benefits

• Zero-configuration experience: Ollama appears immediately when configured via .env
• Backward compatible: Existing users with saved settings are unaffected
• Consistent: Works the same for all local providers (Ollama, LMStudio, OpenAILike)
• User-friendly: Eliminates confusion for new users setting up local AI providers

Fixes

Fixes #1881

Documentation

Comprehensive documentation has been added in /docs/OLLAMA_AUTO_ENABLE_FIX.md explaining the issue, solution, and implementation details.

[Stijnus]

I will put this on hold as im going to rewrite the local providers logic.

[embire2]

I will put this on hold as im going to rewrite the local providers logic.

No problem Stijnus. FYI, I applied to become an official contributor, would you mind checking on my application. The best way to reach me is via email: ceo@openweb.email

Have a great day
Keoma

[Stijnus]

I have a new Pr ready, i with some of you imporvements