Add source-project and target-owner configuration for copy-project safe output

[Copilot]

The copy-project safe output required agents to provide sourceProject and owner on every invocation, even when repeatedly copying from the same template project.

Configuration

• Added optional source-project and target-owner fields to copy-project frontmatter config
• Defaults are passed as environment variables (GH_AW_COPY_PROJECT_SOURCE, GH_AW_COPY_PROJECT_TARGET_OWNER)
• Agent can override defaults by providing explicit values

Schema & Parser

• Extended CopyProjectsConfig with SourceProject and TargetOwner fields
• Added pattern validation for source-project (GitHub project URL format)
• Updated MCP tool schema: sourceProject and owner now optional when defaults configured

Runtime

• JavaScript copyProject() reads env vars as fallbacks before requiring fields
• Error messages updated to mention configuration option

Example

safe-outputs:
  copy-project:
    source-project: "https://github.com/orgs/myorg/projects/42"
    target-owner: "myorg"

// Agent call simplified
copy_project({ title: "Q1 Sprint" });

// Still allows override
copy_project({ 
  sourceProject: "https://github.com/orgs/other/projects/5",
  title: "Different Sprint" 
});

Fully backward compatible - existing workflows without configuration continue to work unchanged.

Original prompt

Safe output copy-project should get option for source and target?

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