feat(snapshot): stop PageBroker on termination signals

[dfeigin-nv]

Stops the PageBroker accept loop on SIGTERM and SIGINT.

Validation: make -C deploy/snapshot/pagebroker daemon test; an idle daemon exits after SIGTERM.

[devin-ai-integration]

Devin Review found 1 potential issue.

[datadog-official]

 

⚠️ Warnings

🚦 6 Pipeline jobs failed

Pre Merge | pre-commit     

🔧 Fix in code. This looks caused by changes in this PR.

Generated files are not up to date. Please run 'pre-commit install' and commit the changes.

Docs link check | lychee     

See error

7 requests returned a 404 Not Found status. URLs include: https://docs.nvidia.com/dynamo/latest/kubernetes-deployment/start-here/installation-guide and https://xgrammar.mlc.ai/docs/structural_tag/structural_tag_api.html.

PR | DGDR Deploy Test / CPU / lifecycle     

See error

Missing required fields: repository and operator_tag when registry is set.

View all 6 failed jobs.

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CI on my pull request is failing. Help me find and fix the root cause of each failing job below — they were flagged as caused by changes in this PR, so focus on the diff. For each job, explain the failure and propose a fix.

Branch: pagebroker-daemon-shutdown

Pre Merge | pre-commit
Commit: 8b2cfee182bfb948d89e9bc93ea54cca3a902380
Error (code / build):
Generated files are not up to date. Please run 'pre-commit install' and commit the changes.
CI job: https://github.com/ai-dynamo/dynamo/actions/runs/31950891488/job/95174070683

ℹ️ Info

🔄 Datadog auto-retried 4 jobs - 2 passed on retry

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 48.99% (-2.19%)

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[dfeigin-nv]

Moved to ai-dynamo/snapshot#89.