Fix double review output in CI logs (#71)

## Summary
- **extract-review-risk.sh**: Replace `tee` with redirect-then-cat to
prevent duplicate review output in CI logs
- **CLAUDE.md**: Add agent guideline to always check PR state before
pushing

## Test plan
- [ ] Verify LLM review appears once (not twice) in CI plan job logs

Author: Alexanderamiri

CLAUDE.md

@@ -299,3 +299,4 @@ When working on any task:
 4. Never push without the user's confirmation
 5. Never implement hacky solutions — generalize
 6. Update task status in this file when complete
+7. **Always check PR state before pushing to a branch** — run `gh pr view` to verify the PR is still open. The user may have already merged it. Pushing to a merged branch creates orphaned commits.

scripts/extract-review-risk.sh

@@ -11,7 +11,8 @@ set -e
 REVIEW_SCRIPT="$1"
 PLAN_FILE="$2"
 
-python3 "$REVIEW_SCRIPT" "$PLAN_FILE" 2>&1 | tee review-output.txt || true
+python3 "$REVIEW_SCRIPT" "$PLAN_FILE" > review-output.txt 2>&1 || true
+cat review-output.txt
 
 if [ -f review-result.json ]; then
   RISK=$(jq -r '.risk // "FAILED"' review-result.json)