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Pluviobyte
0a521f09fb
When the Gemini->Anthropic streaming bridge for the /v1/messages endpoint receives a functionCall part followed by a text part, the text branch in handleStreamingResponse opened a new text content block without closing the already-open tool_use block. The tool block's content_block_stop was only emitted at end-of-stream, after the text block's content_block_start, so the Anthropic SSE stream contained overlapping/unterminated content blocks. Clients that assemble messages by block index (e.g. Claude Code) can drop the tool input or mis-parse the response. The functionCall branch already closes an open text block before opening a tool block, and the chat-completions sibling closes the tool block in its text branch via closeOpenTool(). This applies the same symmetric handling to the messages variant: close any open tool_use block (resetting openToolIndex/openToolName/ seenToolJSON) before starting text. Adds a regression test that replays a tool->text Gemini stream and asserts the Anthropic content-block lifecycle never overlaps.