[himkt]

Fix the Docker build failure caused by copying an untracked .python-version file. Select Python 3.14 with UV_PYTHON, preserve the src/ and data/ directories when copying them into the image, and bump Konoha to 5.7.2 in pyproject.toml and uv.lock.

Failed job: https://github.com/himkt/konoha/actions/runs/40188258679/job/121153554335

Validation:

• uv sync --all-extras succeeded on Python 3.14.9; the lockfile diff contains only the project version bump.
• Ruff, mypy, lockfile consistency checks, and source/wheel builds passed.
• The linux/amd64 Docker image built successfully with Python 3.14.3 and Konoha 5.7.2. API startup and single/batch tokenization passed for every supported tokenizer.
• Local pytest: 37 passed, 9 failed, 3 skipped, and 1 deselected. Failures were caused by the missing macOS MeCab native library and Mykytea module; both tokenizers passed the Docker API checks. The deselected test requires an S3 resource.