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Ethan
9fe75587ae
Previously, user-uploaded PDFs were silently dropped by fantasy's Anthropic provider adapter, so Claude (direct or via Bedrock) only saw the user's text and replied as if no document had been attached. Other providers (OpenAI, Gemini, OpenRouter, Vercel) were unaffected. Bumps `coder/fantasy` past [coder/fantasy#37](https://github.com/coder/fantasy/pull/37) (cherry-pick of upstream [charmbracelet/fantasy#197](https://github.com/charmbracelet/fantasy/pull/197)), which emits an Anthropic `document` content block with a base64 PDF source for `fantasy.FilePart{MediaType: "application/pdf"}` and counts `OfDocument` as user-visible so a PDF-only user message is no longer culled as empty. Adds a regression test (`TestModelFromConfig_AnthropicPDFFilePartReachesProvider`) that drives a `fantasy.FilePart` through the real Anthropic provider against a `chattest.NewAnthropic` stub and asserts the outbound request contains a base64 document block. The test was verified to fail on the previous fantasy pin (the request leaves with zero messages and `Generate` returns EOF) and pass on the new one. Manually verified end-to-end with `./scripts/develop.sh`: uploading a PDF to a Claude-backed Coder Agents chat now lets the model read it. Closes CODAGT-540