mtmd : support home-cooked Mistral Small Omni (#14928)

sycl : add ARANGE operator (#16362)

* SYCL: update element-wise ops and presets

* clean arange

* Re-trigger CI

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Co-authored-by: Gitty Burstein <[email protected]>

CANN: format code using .clang-format (#15863)

This commit applies .clang-format rules to all source files under the
ggml-cann directory to ensure consistent coding style and readability.
The .clang-format option `SortIncludes: false` has been set to disable
automatic reordering of include directives.
No functional changes are introduced.

Co-authored-by: hipudding <[email protected]>

common : Update the docs on -t --threads (#16236)

* Update the docs on -t --threads

* Revert "Update the docs on -t --threads"

This reverts commit eba97345e2c88d8ca510abec87d00bf6b9b0e0c2.

* docs: clarify -t/--threads parameter uses CPU threads and defaults to all available cores

* Update arg.cpp

ggml-cpu: replace putenv with setenv for const-correctness (#16573)

## Why it failed

When compiling with strict compiler flags (-Wwrite-strings -Werror=discarded-qualifiers),
the build fails with the following error:

```
cmake \
  -S . \
  -B ../llama.cpp.build \
  --preset=x64-linux-gcc-debug \
  -DCMAKE_INSTALL_PREFIX=/tmp/local \
  -DCMAKE_C_FLAGS="-Wwrite-strings -Werror=discarded-qualifiers" && \
cmake --build ../llama.cpp.build/
...
/home/otegami/work/cpp/llama.cpp/ggml/src/ggml-cpu/ggml-cpu.c: In function ‘ggml_cpu_init’:
/home/otegami/work/cpp/llama.cpp/ggml/src/ggml-cpu/ggml-cpu.c:3572:24: error: passing argument 1 of ‘putenv’ discards ‘const’ qualifier from pointer target type [-Werror=discarded-qualifiers]
 3572 |                 putenv("KMP_BLOCKTIME=200"); // 200ms
      |                        ^~~~~~~~~~~~~~~~~~~
In file included from /home/otegami/work/cpp/llama.cpp/ggml/src/./ggml-impl.h:10,
                 from /home/otegami/work/cpp/llama.cpp/ggml/src/ggml-cpu/ggml-cpu-impl.h:6,
                 from /home/otegami/work/cpp/llama.cpp/ggml/src/ggml-cpu/traits.h:3,
                 from /home/otegami/work/cpp/llama.cpp/ggml/src/ggml-cpu/ggml-cpu.c:6:
/usr/include/stdlib.h:786:26: note: expected ‘char *’ but argument is of type ‘const char *’
  786 | extern int putenv (char *__string) __THROW __nonnull ((1));
      |                    ~~~~~~^~~~~~~~
cc1: some warnings being treated as errors
ninja: build stopped: subcommand failed.
```

The issue is that putenv() expects a non-const char * but receives a string literal (const char *).

## How to fix

This PR replaces putenv("KMP_BLOCKTIME=200") with setenv("KMP_BLOCKTIME", "200", 0).

Benefits of setenv():
- Accepts const char * parameters (no qualifier warnings)
- Makes copies of the strings (safer memory handling)
- The third parameter (0) ensures we don't overwrite if already set

SYCL: Add GGML_OP_MEAN operator support (#16009)

* SYCL: Add GGML_OP_MEAN operator support

* SYCL: Fix formatting for GGML_OP_MEAN case

* Update ggml/src/ggml-sycl/ggml-sycl.cpp

Co-authored-by: Sigbjørn Skjæret <[email protected]>

---------

Co-authored-by: Sigbjørn Skjæret <[email protected]>

cpu : add FLOOR, CEIL, ROUND and TRUNC unary operators (#16083)

* CPU: Add support for FLOOR,CEIL,ROUND and TRUNC unary operators

- Added the operators to unary op enum
- Implemented API functions
- Implemented forward and unary-op logic in CPU backend
- Updated ggml_get_n_tasks
- Updated operators names array and static_assert
- Updated docs and enabled automatic tests

* docs: add documentation for ggml_trunc and ggml_trunc_inplace in ggml.h

* chore: remove trailing whitespace from ggml.h

* Remove unresolved merge markers

* Apply review suggestions: cleanup formatting, enum order and leftover artifacts

* Regenerate ops.md using create_ops_docs.py

opencl: add q8_0 mm support (#16469)

* opencl: add mm_q8_0_f32

* opencl: fix data loading for incomplete tile

* opencl: use q8_0 mm for larger matrix

* opencl: add some tests to cover the path

metal: optimise `GGML_OP_SUM` (#16559)

* optimise GGML_OP_SUM

* add non-contiguous tests by permuting the input

* change tests to require full contiguity of OP_SUM

* cuda : add check GGML_OP_SUM

---------

Co-authored-by: Georgi Gerganov <[email protected]>

server : fix img token logs (#16595)