fix(opencode): normalize cloudflare-workers-ai mixed message content types - #36850
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…types Cloudflare Workers AI rejects requests when message content types are inconsistent across messages — some with string content and others with array content. This happens because the AI SDK's openai-compatible provider can emit both shapes depending on whether the message has a single text part or multiple parts. The fix detects text-only array content for cloudflare-workers-ai and normalizes it to a flat string, joining multiple text parts with newlines. Non-text content (tool calls, images, etc.) and tool messages are preserved as-is. Closes anomalyco#30381
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Issue for this PR
Closes #30381
Type of change
What does this PR do?
Cloudflare Workers AI rejects requests when message
contenttypes are inconsistent across messages — some have string content while others have array content (e.g.[{type: "text", text: "..."}]). This happens because the AI SDK's openai-compatible provider can emit both shapes depending on whether the message has a single text part or multiple parts.This PR adds a normalization step for
cloudflare-workers-aithat converts text-only array content to a flat string, joining multiple text parts with newlines. Tool messages, tool calls, and non-text content (images, files) are preserved as-is.How did you verify your code works?
bun test test/provider/transform.test.ts— 357 tests pass including 15 new tests covering the normalization pathbun typecheck— clean, no errorsScreenshots / recordings
N/A (no UI changes)
Checklist