feat: Add LibertAI in inference providers

[RezaRahemtola]

What

Adding LibertAI as an inference providers, with 2 model aliases redirecting to our current flagship fast and core models.

Summary by CodeRabbit

• New Features
  • Added LibertAI as a supported LLM provider with two available models: ltai-fast and ltai-core
  • New environment variable configuration enables LibertAI API integration
  • Updated provider validation schemas to recognize and support LibertAI configuration

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 9ae67985-c4e8-4db0-aa73-29566084c368

📥 Commits

Reviewing files that changed from the base of the PR and between f77ddd8 and ab91327.

📒 Files selected for processing (5)

• .env.example
• backend/node/create_nodes/default_providers/libertai_ltai-core.json
• backend/node/create_nodes/default_providers/libertai_ltai-fast.json
• backend/node/create_nodes/providers_schema.json
• frontend/src/assets/schemas/providers_schema.json

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📝 Walkthrough

Walkthrough

This PR adds support for a new LibertAI provider integration with two OpenAI-compatible models. Changes include environment variable configuration, two provider configuration files (ltai-core and ltai-fast), and matching schema updates in both backend and frontend to validate the new provider setup.

Changes

Cohort / File(s)	Summary
Environment & Provider Configurations .env.example, backend/node/create_nodes/default_providers/libertai_ltai-*.json	Added LIBERTAI_API_KEY environment variable and two LibertAI provider configuration files specifying OpenAI-compatible models (ltai-core, ltai-fast) with API endpoint https://api.libertai.io.
Backend Provider Schema backend/node/create_nodes/providers_schema.json	Extended schema to support libertai provider with conditional validation mapping to openai-compatible plugin and restricting models to ltai-fast or ltai-core.
Frontend Provider Schema frontend/src/assets/schemas/providers_schema.json	Mirrored backend schema changes to frontend assets, adding libertai to provider examples and conditional validation rules for model restrictions.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰 A whisker-twitch for LibertAI,
New models fast and core reach sky,
Schemas validated, configs in place,
The rabbit hops at this faster pace! 🚀

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description provides only a brief 'What' section but lacks required sections (Why, Testing done, Decisions made, Checks, User facing release notes) specified in the repository template.	Complete the description by adding Why, Testing done, Decisions made, and User facing release notes sections. Include the checklist items and provide details about testing and rationale for the integration.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'feat: Add LibertAI in inference providers' accurately and concisely summarizes the main change—adding LibertAI as a new inference provider with two model aliases.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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📝 Coding Plan

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