⚡️ Feature: Implement llms.txt for LLM discovery

[001ProMax]

Feature Description

As title.

Problem It Solves

Currently /api/openapi.json is too large to feed directly into AI agents, wasting a significant amount of tokens.

A lightweight llms.txt endpoint/file would help agents discover the essential API usage information more efficiently.

Proposed Solution

Add /api/llms.txt in backend API.

Alternatives Considered

No response

Additional Context

No response

Would you be willing to work on this feature?

• Yes, I'd like to implement this feature
• I could help with parts of this feature
• No, I'm just suggesting the feature