Demo s029: Model description removed

[anandgupta42]

Demo scenario

• Scenario ID: s029
• Branch: demo/s029-description-removed
• Risk category: governance
• Expected reviewer verdict: COMMENT
• Expected deterministic evidence: rule-catalog:yml-description-removed

Customer walkthrough

Shows documentation drift for data consumers.

When presenting this PR, first show that dbt can build the project, then show the reviewer finding. The point is that the reviewer catches or ignores the change from deterministic dbt/SQL evidence, not from advisory AI text.

Validation command

rm -f demo.duckdb demo.duckdb.wal
dbt build --profiles-dir . --target dev
dbt compile --profiles-dir . --target dev
dbt docs generate --profiles-dir . --target dev
bun --conditions=browser /Users/anandgupta/codebase/altimate-code/packages/opencode/src/index.ts review \
  --cwd=/Users/anandgupta/codebase/altimate-code/demo/dbt-pr-review-demo \
  --base=main \
  --head=HEAD \
  --mode=gate \
  --manifest=/Users/anandgupta/codebase/altimate-code/demo/dbt-pr-review-demo/target/manifest.json \
  --json \
  --no-ai

Acceptance notes

• DuckDB default warehouse.
• AI disabled with --no-ai.
• Included in the final local corpus matrix: 50/50 branches matched expected verdicts.
• Real-world corpus floor held at 15/15 caught bad cases and 0/5 false positives.

[github-actions]

✅ Approved — no findings (trivial tier)

No issues found in the changed dbt models. 🎉

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_{altimate dbt-pr-review · verdict APPROVE · signed sha256:1b7498f03c3… · manifest cf4834f151}

[github-actions]

✅ Approved — no findings (trivial tier)