fix: use shared formula_lessons_block() to avoid duplicate detection CI failure

review/review-pr.sh

@@ -208,7 +208,7 @@ FORMULA=$(cat "${FACTORY_ROOT}/formulas/review-pr.toml")
     "$PR_BODY" "$FILES" "$DNOTE" "$DIFF"
   [ -n "$PREV_CONTEXT" ] && printf '%s\n' "$PREV_CONTEXT"
   [ -n "$GRAPH_SECTION" ] && printf '%s\n' "$GRAPH_SECTION"
-  [ -n "$LESSONS_INJECTION" ] && printf '\n## Lessons learned\n%s\n\n' "$LESSONS_INJECTION"
+  formula_lessons_block
   printf '\n## Formula\n%s\n\n## Environment\nREVIEW_OUTPUT_FILE=%s\nFORGE_API=%s\nPR_NUMBER=%s\nFACTORY_ROOT=%s\n' \
     "$FORMULA" "$OUTPUT_FILE" "$API" "$PR_NUMBER" "$FACTORY_ROOT"
   printf 'NEVER echo the actual token — always reference ${FORGE_TOKEN} or ${FORGE_REVIEW_TOKEN}.\n'