docs: surface llama.cpp runtime v0.2.0

[LauraGPT]

Summary

• surface llama.cpp runtime v0.2.0 in all four top-level READMEs
• point English/Japanese/Korean readers to the English product download matrix and Chinese readers to the Chinese page
• update direct Linux Vulkan, Windows Vulkan, and Windows CUDA download links to the current release
• keep the pending AMD reporter hardware confirmation explicit

Validation

• python3 -m pytest -q tests/test_docs_funasr_install_commands.py tests/test_readme_deployment_hub_links.py tests/test_release_version_contract.py tests/test_growth_plan_doc.py (37 passed)
• git diff --check
• HTTP 200 for the release page, three linked archives, and both product pages
• GitHub release API confirms nine assets with SHA-256 digests