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Michael Suchacz
c97f4da3ac
Our fantasy fork had drifted far behind upstream charmbracelet/fantasy (base v0.31.0 vs current v0.40.0). This PR updates the pinned forks after reconciling which fork hacks upstream has fixed and which we still need, and adapts this repo to the new APIs. ## Fork updates - `charm.land/fantasy` -> [coder/fantasy#51](https://github.com/coder/fantasy/pull/51) (merged): `coder_2_33` synced with upstream v0.40.0, pinned at the merge commit `bb10946892ef`. - `github.com/openai/openai-go/v3` -> [coder/openai-go#10](https://github.com/coder/openai-go/pull/10) (merged): `coder/pinned` rebased from v3.16.0 onto upstream v3.50.0 (required by upstream fantasy), pinned at the merge commit `92b5addb22d2`. - `coder/anthropic-sdk-go` pin unchanged; the fantasy fork now tracks the same revision this repo ships. ## Hack reconciliation summary Dropped from our fantasy diff (upstream now has equivalents, often stricter): truncated-stream fail-closed detection, Anthropic EffortXHigh / computer use / thinking effort / thinking display, replay fidelity for signed reasoning and web_search errors, PDF and text documents with sanitized filename titles, refusal finish-reason mapping (upstream also maps Bedrock `content_filtered`/`guardrail_intervened`), gpt-5.5/5.6 Responses routing, the Go 1.25 downgrade, and the openai-go SSE decoder and appendCompact patches. Still fork-only and preserved: OpenAI computer use, OpenAI Responses replay continuity validation, Anthropic pre-4.6 budget-thinking conversion plus explicit thinking disable for effort none, Anthropic RefusalMetadata parsing, Bedrock cross-region inference profile region mirroring, and openai-go deferred body serialization with the WithJSONSet fix. Picked up new upstream features: stream transport retry with in-band SSE error classification, Bedrock expired-credential refresh, per-message cache markers for OpenAI-compatible models, tool panic recovery, extra usage fields in provider metadata, and ClientMetadata on tool results. ## Changes in this repo - `aibridge/intercept/responses`: `ResponseOutputItemUnion.Arguments` became a union type in openai-go v3.50; read function-call arguments via `.OfString` (plus test literal updates). - `coderd/x/chatd/chatdebug`: register the new fantasy `Call.Headers`, `ObjectCall.Headers`, and `ToolResultPart.ClientMetadata` fields in the normalization coverage map (all skipped). - `aibridge/internal/integrationtest`: make the RST test listener drain the request before resetting the connection. The new SDK's write path exposed the previous 1-byte-read race as sporadic `use of closed network connection` failures; the fix holds over 40 consecutive runs. - `go.mod`: rewrite the fork provenance comments to describe the post-sync state. ## Validation - `go build ./...` and `go vet ./...` clean (vet findings identical to base). - Fresh (`-count=1`) runs of `./coderd/x/chatd/...`, `./aibridge/...`, `./coderd/aibridged/...`, `./coderd/database/db2sdk/`: 37 packages pass. - `TestClientAndConnectionError` stress-tested 40x clean. - Both fork PRs have green CI. > Mux acted on Mike's behalf to create this PR.