Migrate this project's verified OpenAI-compatible Chat Completions paths to MandAPI with the smallest coherent change. First identify its language, package manager, framework, client initialization, chat callers, streaming consumers, tool calls and JSON expectations. Set the base URL to https://api.mandapi.com/v1, use the secret MANDAPI_API_KEY and select a real model through MANDAPI_MODEL_ID. Never print or commit a key, invent model IDs, or assume another provider's aliases work. Keep existing UI protocols, persisted messages, tools, retries and public APIs. Do not migrate embeddings, images, audio, Responses or provider-specific APIs without verifying compatibility; list them as separate decisions. Update the configuration example and README. Run the project's relevant local checks. A real request requires my usable key and authorization; otherwise report that no live test ran. Summarize changed files, checks, retained paths and rollback settings.