Adopt declarative requirements inspection and forward complete project evidence

[AntoineToussaint]

Production Mind 04b evidence shows requirements-only Python code units as enrichment complete with no dependency orientation. Core #181/#182 adds declarative requirements.in/requirements.txt inspection, but the Python agent must consume that Core release. Its Tooling GetProjectInfo adapter also currently drops SourceFiles/import evidence.

Acceptance criteria:

• Consume the released Core requirements inspection.
• Code GetProjectInfo returns author-declared requirements without materializing an environment.
• Tooling forwards packages, dependencies, file hashes, SourceFiles/imports, and typed failures without a parallel parser.
• A real filesystem regression proves a requirements-only package and Python import cross both Code and Tooling surfaces.