Merge branch 'upstream' into concedo_experimental

# Conflicts:
#	.devops/intel.Dockerfile
#	.github/workflows/build-cross.yml
#	.github/workflows/build-sycl.yml
#	.github/workflows/build.yml
#	.github/workflows/editorconfig.yml
#	.github/workflows/release.yml
#	cmake/riscv64-spacemit-linux-gnu-gcc.cmake
#	docs/backend/OPENVINO.md
#	docs/backend/SYCL.md
#	docs/build-riscv64-spacemit.md
#	docs/ops.md
#	docs/ops/WebGPU.csv
#	embd_res/ggml-vocab-qwen35.gguf
#	embd_res/ggml-vocab-qwen35.gguf.inp
#	embd_res/ggml-vocab-qwen35.gguf.out
#	examples/model-conversion/Makefile
#	ggml/CMakeLists.txt
#	ggml/src/ggml-cpu/CMakeLists.txt
#	ggml/src/ggml-hexagon/ggml-hexagon.cpp
#	ggml/src/ggml-hexagon/htp/hmx-flash-attn-ops.c
#	ggml/src/ggml-hexagon/htp/hmx-matmul-ops.c
#	ggml/src/ggml-hexagon/htp/hmx-utils.h
#	ggml/src/ggml-hexagon/htp/htp-ops.h
#	ggml/src/ggml-hexagon/htp/hvx-utils.h
#	ggml/src/ggml-hexagon/htp/main.c
#	ggml/src/ggml-hexagon/htp/unary-ops.c
#	ggml/src/ggml-opencl/CMakeLists.txt
#	ggml/src/ggml-opencl/ggml-opencl.cpp
#	ggml/src/ggml-opencl/kernels/cvt.cl
#	ggml/src/ggml-sycl/CMakeLists.txt
#	ggml/src/ggml-sycl/common.cpp
#	ggml/src/ggml-sycl/common.hpp
#	ggml/src/ggml-sycl/ggml-sycl.cpp
#	ggml/src/ggml-webgpu/ggml-webgpu-shader-lib.hpp
#	ggml/src/ggml-webgpu/ggml-webgpu.cpp
#	ggml/src/ggml-webgpu/wgsl-shaders/common_decls.tmpl
#	ggml/src/ggml-webgpu/wgsl-shaders/flash_attn_tile.wgsl
#	ggml/src/ggml-webgpu/wgsl-shaders/flash_attn_vec_reduce.wgsl
#	ggml/src/ggml-webgpu/wgsl-shaders/flash_attn_vec_split.wgsl
#	ggml/src/ggml-webgpu/wgsl-shaders/get_rows.wgsl
#	ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_decls.tmpl
#	ggml/src/ggml-webgpu/wgsl-shaders/mul_mat_vec_acc.tmpl
#	ggml/src/ggml-webgpu/wgsl-shaders/unary.wgsl
#	ggml/src/ggml-zendnn/CMakeLists.txt
#	ggml/src/ggml-zendnn/ggml-zendnn.cpp
#	scripts/snapdragon/adb/run-completion.sh
#	tests/CMakeLists.txt
#	tools/cli/README.md
#	tools/completion/README.md
#	tools/mtmd/clip-impl.h
#	tools/mtmd/clip.cpp
#	tools/mtmd/clip.h
#	tools/server/README.md

tools/server/tests/unit/test_chat_completion.py

@@ -178,6 +178,45 @@ def test_chat_template_assistant_prefill(prefill, re_prefill):
     assert res.body["__verbose"]["prompt"] == f"<s> <|start_header_id|>system<|end_header_id|>\n\nBook<|eot_id|><|start_header_id|>user<|end_header_id|>\n\nWhat is the best book<|eot_id|><|start_header_id|>assistant<|end_header_id|>\n\n{re_prefill}"
 
 
+def test_chat_template_continue_final_message_vllm_compat():
+    """continue_final_message is the vLLM/transformers explicit alias for the prefill_assistant heuristic.
+    Both must produce the same prompt."""
+    global server
+    server.chat_template = "llama3"
+    server.debug = True
+    server.start()
+    res = server.make_request("POST", "/chat/completions", data={
+        "max_tokens": 8,
+        "add_generation_prompt": False,
+        "continue_final_message": True,
+        "messages": [
+            {"role": "system", "content": "Book"},
+            {"role": "user", "content": "What is the best book"},
+            {"role": "assistant", "content": "Whill"},
+        ]
+    })
+    assert res.status_code == 200
+    assert "__verbose" in res.body
+    assert res.body["__verbose"]["prompt"] == "<s> <|start_header_id|>system<|end_header_id|>\n\nBook<|eot_id|><|start_header_id|>user<|end_header_id|>\n\nWhat is the best book<|eot_id|><|start_header_id|>assistant<|end_header_id|>\n\nWhill"
+
+
+def test_chat_template_continue_final_message_mutual_exclusion():
+    """add_generation_prompt and continue_final_message both set to true must be rejected"""
+    global server
+    server.chat_template = "llama3"
+    server.start()
+    res = server.make_request("POST", "/chat/completions", data={
+        "max_tokens": 8,
+        "add_generation_prompt": True,
+        "continue_final_message": True,
+        "messages": [
+            {"role": "user", "content": "Hi"},
+            {"role": "assistant", "content": "Hello"},
+        ]
+    })
+    assert res.status_code == 400
+
+
 def test_apply_chat_template():
     global server
     server.chat_template = "command-r"