Add tools.cli package entry point

[Victor-Dixon]

Motivation

• Test collection was failing with an ImportError when tests attempted from tools.cli import main because tools.cli was not a proper package.
• Provide a stable package entry so the CLI dispatcher can be imported by tests and by python -m tools.cli style usage.

Description

• Add tools/cli/__init__.py which re-exports main from tools.cli.dispatchers.unified_dispatcher so from tools.cli import main resolves.
• Add tools/cli/dispatchers/__init__.py to make the dispatchers subpackage importable by the package initializer.

Testing

• Prior to this change, running pytest tests/ -v failed during collection with an ImportError from tools.cli (collection failure).
• No automated tests were executed after this change in this rollout, so test pass/fail status is unverified.

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Codex Task

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Note

Establishes an importable CLI package entry point.

• Add tools/cli/__init__.py that re-exports main from tools.cli.dispatchers.unified_dispatcher
• Add tools/cli/dispatchers/__init__.py to define the dispatchers subpackage

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