feat: add SAS Migration Analysis module with Cognition vs Alchemist prerequisites comparison

[devin-ai-integration]

Summary

Adds a new SAS Migration Analysis module to the Data Engineering category. This module covers the discovery and assessment phase that precedes actual SAS code translation — the phase where you inventory the SAS estate, extract data lineage, build dependency graphs, and produce a migration-readiness assessment.

The key deliverable is a side-by-side prerequisites comparison between Alchemist Analyzer (runtime trace-based) and Cognition/Devin (static code analysis). Cognition's approach is non-invasive — it requires no changes to the customer's running SAS environment (no XML logging configs, no audit loggers, no -logconfigloc updates).

Changes

• New module: modules/data-engineering/sas-migration-analysis.md

  • Customer prerequisites comparison table (Alchemist vs Cognition)
  • Ready-to-send email template for artifact collection
  • SAS artifact type reference table (.sas, .egp, .spk, .log, autoexec, formats)
  • Hands-on steps using ts-sas-legacy-codebase and uc-data-migration-sas-to-snowflake
  • Target outcomes: inventory, lineage docs, dependency graph, dataset usage matrix, complexity scoring, assessment report

• Updated: modules/data-engineering/README.md

  • Added SAS Migration Analysis to module table
  • Added SAS repos to the repository cross-reference table
  • Added guidance note about SAS Migration Analysis as the recommended starting point for SAS engagements

• Updated: catalog/repos.md

  • Enriched ts-sas-legacy-codebase entry with cluster, key contents, and challenge links
  • Enriched uc-data-migration-sas-to-snowflake entry with cluster, key contents, and challenge links

Review & Testing Checklist for Human

• Verify the prerequisites comparison table accurately reflects Alchemist Analyzer requirements (based on the customer's stated prerequisites)
• Verify the email template covers the right artifacts for your customer engagement on May 20
• Check that the module hands-on prompts work well against the ts-sas-legacy-codebase repo (92 macros, .egp, .spk)
• Confirm the difficulty/time estimates are appropriate (Intermediate / 45 min)

Notes

• The existing custom_sas-to-snowflake-experiment repo (5 enterprise SAS programs for banking/insurance) doesn't follow the naming convention. Consider renaming it to ts-sas-enterprise-analytics if it will be used in workshops.
• This module is designed to pair with the existing SAS to Python/Snowflake module — analysis first, then translation.
• For the dbt on Databricks target specifically, the assessment prompts include a target mapping section recommending how SAS components map to dbt/Databricks equivalents.

Link to Devin session: https://partner-workshops.devinenterprise.com/sessions/50fd6fc6429243878b36d774135e6a18
Requested by: @bsmitches

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✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.