ci: run link analysis for changed CSV data

[bcabreraike-cmyk]

Summary

Run link analysis automatically when a pull request changes link-bearing CSV data, while preserving manual triggering with check-links and workflow_dispatch.

The workflow now compares extracted URLs with the base branch and checks only URLs introduced or changed by the pull request. Historical URLs on otherwise touched rows no longer create unrelated review noise.

Type of change

• CI/workflow change only (no data or schema change)

Scope

• File: .github/workflows/link-check-analysis.yaml
• No provider, offer, network, or listing data changed.
• The automatic path is limited to CSVs under listings/ or references/, plus edits to this workflow so it validates itself.

Validation evidence

• Extracted link-parser Python syntax check passes.
• Detection logic: workflow change = run; data CSV change = run; metadata-only change = skip.
• Reproduced against PR fix: normalize missing API, bridge, and faucet values (DBIP #2683) #2696: 13 changed CSVs and 0 new or changed URLs, so the check does not re-test inherited links.
• git diff --check passes.

Security

• Workflow permissions remain read-only (contents: read).
• Checkout credentials are not persisted.
• No secrets, write tokens, or external credentials are used.

[github-actions]

Summary

Status	Count
🔍 Total	0
🔗 Unique	0
✅ Successful	0
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	0
⛔ Unsupported	0

Full Github Actions output

[github-actions]

Summary

Status	Count
🔍 Total	0
🔗 Unique	0
✅ Successful	0
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	0
⛔ Unsupported	0

Full Github Actions output

[USS-Supervisor]

Verdict: APPROVE
Risk: LOW
Summary: The workflow change is narrowly scoped to Link Check (analysis) and keeps read-only permissions while making link analysis run for CSV/link-check workflow changes. The diff checks only changed link-bearing data against the base branch, which addresses the recurring inherited-link noise without changing repository data.

Findings: None.

Confidence: HIGH