* Add deployment info to mass pkg get

User prompts:
- "update mass pkg get's query to fetch this additional detail. in the mass pkg get standard output just show the latest/active deployment id / status / version / created at."

Changes:
- Add latestDeployment, activeDeployment, deployedVersion to getPackage GraphQL query
- Add PackageDeployment struct and new fields to Package model
- Update package.get.md.tmpl to display deployment info in text output
- Nil-out empty deployments from mapstructure decoding

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Address PR review comments for deployment info

User prompts:
- "This pr needs to have main pulled and then merged in, it refactored everything into an internal dir ... also, address the PR comments."
- "push the pr and give me the link again"

Changes:
- Make DeployedVersion a *string to handle nullable GraphQL field
- Add nil-out logic in toPackage for empty DeployedVersion pointer
- Fix UTC timestamp formatting in template (call .UTC before .Format)
- Add deref template function for *string rendering
- Add genqlient @pointer directive for deployedVersion field
- Add tests for nil and present deployment decode paths

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>