Make legacy dashboard GitHub settings configurable and dedupe project queries

[Copilot]

The legacy dashboard was tied to a specific GitHub user/org and assumed a fixed site repository, which made it non-reusable. In the same area, the Projects snapshot script carried duplicated GraphQL query definitions, and dashboard API failures could take down whole sections instead of degrading cleanly.

• Dashboard configuration

  • Replaced hardcoded username, organization, and site repo values in dashboard.js with runtime-resolved config.
  • Supports configuration from script data-* attributes or window.GITHUB_DASHBOARD_CONFIG, while preserving current defaults for this repo.
  • Updated the legacy dashboard entrypoints to pass the current repo values explicitly instead of relying on in-file constants.

• Dashboard failure handling

  • Tightened GitHub API response handling for network errors, invalid JSON, rate limits, 404s, and server-side failures.
  • Changed dashboard loaders to fall back per section (repository health, AI agent metrics, deployment info) instead of failing the entire dashboard initialization path.
  • Removed the hardcoded deployment repo lookup and sourced it from dashboard config.

• Projects query reuse

  • Extracted the shared Projects v2 selection set into a single query builder used for both repository- and user-scoped fetches.
  • Kept the existing fetch flow intact while removing duplicated GraphQL structure from fetch_projects.ts.

• Focused coverage

  • Added assertions around the shared query builder so repository/user queries continue to include the expected Projects v2 fields.

Example of the new dashboard configuration surface:

<script
  src="assets/js/dashboard.js"
  data-github-username="cywf"
  data-github-organization="PR-CYBR"
  data-personal-repos="cywf.github.io"
  data-github-site-repo="cywf.github.io"
></script>

[cywf]

Closing this draft as stale/superseded during CYWF portfolio cleanup. The current project-first portfolio direction is covered by later overhaul work; please reopen or file a fresh PR if a specific change is still needed.