Prepare Python package metadata for Determa State 0.1.0

[fruwe]

Summary

• Set the Python package metadata and runtime version to 0.1.0.
• Pin every established specification and conformance reference to the synchronized 0.1.0 release inputs.
• Update only established release-facing documentation, pin docstrings, and the version assertion.

Closes #69.

Authoritative inputs

• Specification: c1635d74e6a216301a8986d37be8ce7e7111dfd7
• Conformance: 600523ca08c3b8a6ee790439a32dc4ce47f71b95

These exact commits are used consistently by the local harness, schema synchronization, CI checkouts, and release documentation.

Validation

• .venv/bin/ruff check .
• .venv/bin/mypy src/determa
• .venv/bin/pytest -q (189 passed)
• .venv/bin/pytest conformance -q (149 passed)
• Built and integrity-checked determa_state-0.1.0-py3-none-any.whl and determa_state-0.1.0.tar.gz
• Verified package name/version, runtime version, entry points, typing marker, license, and expected source contents
• Verified all four normative schemas are byte-identical across the synchronized specification, source tree, wheel, and source archive
• git diff --check

Scope

No behavior, schema, dependency, or publication change is included. This PR remains draft; no merge, tag, or PyPI publication is performed here.