refactor(@angular/cli): implement experimental unified run_target facade and strategy dispatcher

[clydin]

Introduce the unified run_target MCP tool and the underlying builder strategy dispatcher in a dedicated tools/run-target subdirectory. This architecture leverages the strategy pattern to delegate Angular CLI target executions (build, test, lint, e2e) to specialized internal strategies, defaulting to a universal GenericTargetStrategy fallback.

[gemini-code-assist]

Code Review

This pull request introduces a new run_target tool to the Angular CLI MCP server, enabling the execution of project targets such as build, test, and lint through a unified interface. The implementation includes a generic execution strategy and supporting unit tests. Feedback focuses on improving the robustness of option serialization—specifically handling array values and avoiding the stringification of null or undefined values—as well as refining the Zod schema to restrict option types to primitives and correcting minor punctuation in user-facing descriptions.

[clydin]

This PR was merged into the repository. The changes were merged into the following branches:

• main: 25fd714
• 22.0.x: 1a2654c

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