Update Azure DevOps Health Monitoring Scripts for Timeout Adjustments and Documentation Enhancements

[stewartshea]

• Reduced the command timeout from 60 seconds to 30 seconds in the _az_helpers.sh script to improve responsiveness.
• Enhanced the preflight-check.sh script documentation to clarify the purpose of the preflight checks and the output structure, including group memberships and role summaries.
• Increased the timeout for the preflight check runbook from 120 seconds to 180 seconds to accommodate longer execution times for API calls.

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Note

Medium Risk
Changes the preflight’s core verification mechanism and relies on Graph/connectionData endpoints and token/PAT scopes, which may alter results or fail in environments without those permissions.

Overview
Reworks preflight-check.sh from “probe a few az CLI calls” into a REST-based permission report that fetches the authenticated user via connectionData, enumerates Graph group memberships, and derives org/project role summaries, writing these new fields to preflight_results.json.

Tightens az_with_retry per-command timeout default from 60s to 30s in _az_helpers.sh, and increases the runbook’s preflight-check.sh execution timeout from 120s to 180s to account for the additional API calls.

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