Clean up compute architecture API

[aidankhogg]

Motivation

• Unify the public architecture API so computecommons.compute exposes the canonical architecture enum and normalization helpers rather than a placeholder module or duplicate value objects.
• Remove a misspelled compatibility shim that would otherwise leak a duplicate import path into the package surface.
• Make tests validate the intended public architecture imports rather than only asserting that a placeholder module can be imported.

Description

• Added builds/packages/base/internetworking/src/computecommons/compute/architecture.py that re-exports CPUArchitecture from computecommons.enums and ARCHITECTURE_ALIASES / normalize_architecture from computecommons.static and sets __all__ to expose the accepted helpers.
• Updated builds/packages/base/internetworking/src/computecommons/compute/__init__.py to import and export ARCHITECTURE_ALIASES, CPUArchitecture, and normalize_architecture alongside the existing compute models.
• Removed the misspelled compatibility shim compute/architechture.py to avoid duplicate/incorrect package surface before the stable v0.1 release.
• Rewrote the placeholder test in builds/packages/base/internetworking/tests/test_compute.py to assert that the compute package re-exports the canonical enum and normalization function and that the module-level helpers match the static implementations.

Testing

• Ran python -m ruff check tests/test_compute.py src/computecommons/compute/architecture.py src/computecommons/compute/__init__.py and applied an auto-fix for import formatting, which completed successfully.
• Ran python -m pytest in builds/packages/base/internetworking and all tests passed (39 passed).
• Ran python -m mypy src tests and it failed due to pre-existing typing issues in tests/test_empty_module_surface.py (unrelated to the architecture changes).

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Codex Task