0.2.0 - 26A4 and EmbeddingGemma2

• Added Gemma 4 26B A4B support, including HTTP serving, offline generation, image input, prefix caching, and MTP speculative decoding.
• Added EmbeddingGemma 2 serving through serve-embeddings and /v1/embeddings, supporting text, images, video, audio, and mixed multimodal inputs.
• Added batched embedding inputs, selectable 128/256/512/768 dimensions, float/base64 output, and dedicated embedding metrics.
• Expanded tool calling with required calls, named-function selection, allowed-tool subsets, and parallel_tool_calls:false.
• Added strict tool argument schemas and support for combining tool calls with constrained JSON answers.
• Expanded non-strict tool schema support, including references, unions, metadata, and argument keys containing Unicode or punctuation.
• Added reasoning_effort support for chat and chat-prefill requests: none disables thinking; low, medium, and high enable it.
• Added configurable per-image token budgets of 70, 140, 280, 560, or 1120 through server defaults and request overrides.
• Corrected image-prefill attention masking
• Optimized vision processing and short cached-prompt prefill
• Added packed text/image prefill across requests
• Added adaptive MTP proposal depth through --decode-width