b11154

test-save-load-state : print a per-model results table in --models mode (#29316)

• test-save-load-state : print a per-model results table in --models mode

in --models mode the output was very heavy: every model printed its
token dumps, per-test headers and PASS lines. instead, silence all
logging except the table itself (common_log_set_verbosity_thold(0)
leaves only LOG / LOG_LEVEL_OUTPUT) and print one row per model with
one column per test, colored PASS/FAIL/SKIP cells, row by row.

• run_save_load_tests_for_model returns a test_suite with a dynamic
  std::vector<test_status> and continues past failures: tests 3-5 are
  SKIPped when the baseline (test 1) fails, model init failure skips all
• per-test token dumps, test headers and PASS lines are demoted to
  LOGV(LOG_LEVEL_INFO, ...) so they still show in single-model mode
• the table header/rows derive their columns from test_names; the
  model name is printed and flushed before the suite runs so the model
  currently in flight is always visible
• single-model output and exit codes are unchanged

Assisted-by: pi:llama.cpp/Qwen3.8-27B

• test-save-load-state : print example usage on -h

add a print_usage callback passed to common_params_parse, so -h/--help
also shows example commands for the tool-specific --models option and
the -lv verbosity level

Assisted-by: pi:llama.cpp/Qwen3.8-27B

• test-save-load-state : remove comments

ref: #29316

Assisted-by: pi:llama.cpp/Qwen3.8-27B

Website:

• https://llama.app

Attestations:

• https://github.com/ggml-org/llama.cpp/attestations/49764361

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• macOS Apple Silicon (arm64)
• macOS Apple Silicon (arm64, KleidiAI enabled) DISABLED
• macOS Intel (x64)
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• Ubuntu x64 (CPU)
• Ubuntu arm64 (CPU)
• Ubuntu s390x (CPU)
• Ubuntu x64 (Vulkan)
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• Ubuntu x64 (CUDA 13) - CUDA 13.4 libraries
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• Windows x64 (CUDA 12) - CUDA 12.4 DLLs
• Windows x64 (CUDA 13) - CUDA 13.4 DLLs
• Windows arm64 (CUDA 13) - CUDA 13.4 DLLs
• Windows x64 (Vulkan)
• Windows x64 (OpenVINO)
• Windows x64 (SYCL)
• Windows x64 (ROCm 10.0)

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• UI