🌿 Fern Regeneration -- April 13, 2026

[fern-api]

This PR regenerates code to match the latest API Definition.

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Note

Medium Risk
Medium risk because it updates generated client behavior and API surface (new endpoints/params and changed return types), including defaulting api_key from an environment variable which can affect authentication configuration.

Overview
Bumps the generated SDK to 2.43.0 and updates Fern tooling metadata, including new docs updates and regenerated reference output.

Adds new Conversational AI capabilities: conversations.topics.get (topic discovery results), knowledge_base.search (fuzzy content search), and secrets.get_dependencies, plus new filtering/preview controls like topic_ids on conversation listing and dependency_limit on secrets listing.

Adjusts existing endpoints and types: branch merge now supports a force option and no longer assumes main-branch-only targets; knowledge_base.documents.get_content and twilio.register_call now return str content instead of None; client constructors default api_key from ELEVENLABS_API_KEY; and multiple ConvAI models/enums are extended (e.g., secret dependency previews incl. MCP servers, new topic models, added is_blocked flags, and minor enum value changes).

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