v0.109.1

Bug-fix release addressing three items from the upstream issue tracker plus one found in review.

Fixes

• DeepSeek & Qwen streaming buffered the whole response (upstream #990). Both handlers sent stream: true in the request body but never set the Guzzle stream transport option, so the entire response was buffered in memory before the first event yielded. Now consistent with the other 14 providers. (The Qwen instance was not reported — found while verifying prism-php#990.)
• Malformed tool-call JSON crashed with a raw TypeError (upstream #1006). OpenRouter's ToolCallMap eagerly ran json_decode() and passed the result straight to the ToolCall constructor; invalid model JSON decoded to null and threw a raw TypeError. Arguments are now decoded lazily, and a decode failure raises a handled PrismException that the tool-execution loop turns into a tool result the model can see and recover from.

Feature

• OpenAI text_verbosity (upstream #1015) now works on structured output and both chat/completions paths — previously it was only wired on the Responses text path.

Tests

7 new/updated tests (1,891 total): OpenRouter tool-call mapping and lazy-decode behavior, verbosity pass-through for structured + chat/completions, and the ToolCall value-object test updated to assert the handled exception.

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