Add Dagster orchestration and reduce active brands in backend

data/seed_catalogs/archive/README.md

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+# Archived seed catalogs
+
+These brands are **not deleted** - they are inactive.
+
+The application works on the brands listed in `ACTIVE_BRANDS` (see
+`backend/.env` and `app/services/active_brands.py`). Catalogs for every other
+brand live here so the boot auto-seed does not parse ~19MB of JSON and does not
+create a `brand_*` table for a brand nobody is developing against.
+
+`brand_sync.seed_catalog_paths()` reads this directory too, so **re-activating a
+brand needs only a config change** - the file does not have to be moved back:
+
+```
+ACTIVE_BRANDS=Amul,Cadbury,Hindustan Unilever,Nestle
+```
+
+...then restart the API (or `POST /api/system/init`) and Nestle is seeded and
+served again.
+
+Their `brand_*` tables and embeddings were never dropped; they are still in
+Postgres, just filtered out of discovery.
+
+Moving a file back into the parent directory is optional tidiness, not a
+requirement.

data/seed_catalogs/archive/brand_catalog_lion_dates.stray-copy.json

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+{
+  "brand": "lion dates",
+  "search_query": "Lion Dates products catalog",
+  "generation_timestamp": "C:\\Brand_Catalog_LLM\\RAG_Model_Nutrition_Intelligence\\RAG_Model_Full_Implement\\backend\\app\\api\\routers\\user_products.py",
+  "total_products": 1,
+  "total_images": 10,
+  "products": [
+    {
+      "image_id": "lion_dates_lion_dates_450g",
+      "product_name": "Lion Dates 450g",
+      "title": "Lion Dates 450g",
+      "brand": "Lion Dates",
+      "brand_name": "Lion Dates",
+      "category": "Health Foods",
+      "description": "Introducing Lion Dates 450g from the trusted Lion Dates brand. A premium quality product offering superior taste, authentic ingredients, and reliable value. Backed by Lion Dates's reputation for quality and consistency.",
+      "price_range": "₹160-220",
+      "size_variants": [
+        "450g"
+      ],
+      "providers": [
+        "Amazon",
+        "Flipkart",
+        "BigBasket"
+      ],
+      "highlights": [
+        "lion dates Brand - Trusted Quality",
+        "Food - Spreads Category",
+        "Affordable at ₹9-11",
+        "Available in 10g",
+        "Premium Quality",
+        "Available on 3 platforms"
+      ],
+      "nutrients": [
+        "Vitamin E - Antioxidant protection",
+        "Omega-3 - Heart health",
+        "Dietary Fiber - Digestive health",
+        "Protein - Muscle building",
+        "Magnesium - Muscle function",
+        "Carbohydrates - Quick energy",
+        "Healthy Fats - Heart health"
+      ],
+      "fssai_license": "10012042000244",
+      "product_sku": "LION-LION_D-001",
+      "sku_source": "User Upload",
+      "hsn_code": "2008",
+      "final_selling_price": 185.0,
+      "selling_price": 185.0,
+      "barcode": "20086040",
+      "barcode_type": "GTIN-13",
+      "image_url": "https://liondates.com/cdn/shop/files/1.Datesinhoney_productfocus.png?v=1773383963&width=1445",
+      "image_urls": [
+        "https://liondates.com/cdn/shop/files/1.Datesinhoney_productfocus.png?v=1773383963&width=1445",
+        "https://liondates.com/cdn/shop/files/dateshoney_1.jpg?v=1739704587&width=1080",
+        "https://liondates.com/cdn/shop/files/Lion-Fig-in-Honey-Lion-Dates-95545533.jpg?v=1716380700&width=720",
+        "https://liondates.com/cdn/shop/files/Lion-Fig-in-Honey-Lion-Dates-95545649.jpg?v=1739705462&width=1080",
+        "http://liondates.com/cdn/shop/files/Lion-Mixed-Nuts-in-Honey-Lion-Dates-95787173.jpg?v=1716438485",
+        "http://liondates.com/cdn/shop/files/Lion-Amla-in-Honey-Lion-Dates-95589650.jpg?v=1716381007",
+        "https://liondates.com/cdn/shop/files/2.Datesinhoney_benefits.png?v=1773383963&width=390",
+        "https://liondates.com/cdn/shop/files/Arabian_dates_500g_front.png?v=1739617157&width=1838",
+        "https://liondates.com/cdn/shop/files/Sukkari_dates_front.png?v=1739615376&width=2048",
+        "https://5.imimg.com/data5/SELLER/Default/2023/6/312791417/NH/RZ/CD/180805796/lion-honey-dates-250x250.webp"
+      ],
+      "search_query": "Lion Dates Lion Dates 450g Health Foods Introducing Lion Dates 450g from the trusted Lion Dates brand. A premium quality product offering superior taste, authentic ingredients, and reliable value. Backed by Lion Dates's reputation for quality and consistency. ₹160-220"
+    }
+  ]
+}