Add FriendliAI as a built-in provider (GLM-5.2 support)

[Lee-Si-Yoon]

Feature Request: Add FriendliAI as a built-in provider

I'd like to use FriendliAI models — specifically GLM-5.2 — through oh-my-pi.

Why

FriendliAI provides an OpenAI-compatible API endpoint (https://api.friendli.ai/v1), so it should fall under the common case described in docs/adding-a-provider.md — an OpenAI-compatible gateway that reuses the openai-completions wire API.

Proposed changes

Following the adding-a-provider guide, the change would be:

1. Catalog entry in packages/catalog/src/provider-models/descriptors.ts:

   • id: "friendli"
   • defaultModel: "glm-5.2"
   • envVars: ["FRIENDLI_API_KEY"]
   • createModelManagerOptions: use createSimpleOpenAICompletionsOptions("friendli", "https://api.friendli.ai/v1", ...)

2. Registry def at packages/ai/src/registry/friendli.ts:

   • id: "friendli", name: "FriendliAI"
   • Env-key only (no OAuth flow needed)

3. Registry registration in packages/ai/src/registry/registry.ts:

   • Import + add to ALL array

This is a minimal, env-key-only provider addition. Happy to open a PR once vouched!

Vouch request

I'd also like to be vouched so I can submit the PR.

[can1357]

vouched!