p29

RETRIEX_P29_SHOP_RESULT_DEDUPE_HARDENING_README.md

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+# RetrieX p29 - Shop Result Dedupe Hardening
+
+Purpose:
+- Prevent repeated shop product records from being passed into prompts or rendered in fallback output.
+- Treat product number as the strongest deduplication key, so SKU variants with slightly different display names do not appear repeatedly.
+- Keep the existing shop ranking and technical suitability logic unchanged.
+
+Changed files:
+- `src/Commerce/ShopSearchService.php`
+- `src/Agent/PromptBuilder.php`
+
+Validation:
+```bash
+bin/console mto:agent:config:validate
+bin/console mto:agent:regression:test
+bin/console mto:agent:config:audit-source --details
+bin/console mto:agent:config:audit-patterns --details
+```