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Ethan
deb6eec68b
Previously, fantasy's Anthropic provider adapter accepted PDF and text FileParts but dropped the filename on the floor, so Claude (direct or via Bedrock) saw the document bytes without any handle and could not answer questions like "what's in foo.pdf". Other providers (OpenAI, Gemini, OpenRouter, Vercel) already forwarded filenames. Bumps `coder/fantasy` past [coder/fantasy#38](https://github.com/coder/fantasy/pull/38), which sanitizes `FilePart.Filename` and sets it as the Anthropic `DocumentBlockParam.Title` for both `application/pdf` and `text/*` attachments, and emits a `CallWarning` for unsupported `FilePart` media types instead of silently dropping them. On this side, plumbs the resolved filename through `partsToMessageParts` so the `FilePart` literal carries it into the provider. The existing `TestModelFromConfig_AnthropicPDFFilePartReachesProvider` regression test is extended to assert the outbound Anthropic request includes the sanitized title (`quarterly_report.v1.pdf` becomes `quarterly report v1 pdf`). Closes CODAGT-545