add READMEs

product_print_category_supermarket/README.md

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+# Product Print Category Supermarket
+
+Extends product_print_category with customizable product price tags for supermarkets with dual pricing (member and public).
+
+## Features
+
+- Dual price labels (member and public) from different pricelists
+- Show product code, barcode, origin, and expiration date on labels
+- Customizable label text ("PVS", "PVP", etc.)
+- Support for 60x35mm and 60x30mm size formats
+
+
+## Installation
+
+Install the module and ensure these dependencies are available:
+- `product_print_category`
+- `product_origin`
+- `product_template_tags`
+- `product_net_weight`
+
+## Configuration
+
+1. **Settings > Products > Label Configuration**: Select pricelists for members and public prices
+2. **Sales -> Products > Print Categories**: Configure label settings (show code/barcode, price labels)
+3. **Products > Products**: Set product info (origin, ingredients, expiration, balance code, print category)
+
+## Usage
+
+1. Go to **Products > Products**
+2. Select products to print
+3. **Action > Print Products** and choose the desired format
+
+Prices are automatically calculated from configured pricelists with taxes included.
+
+
+## License
+
+AGPL-3.0 or later

product_sale_price_from_pricelist/README.md

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+# Product Sale Price from Pricelist
+
+Automatically calculate and update product sale prices based on the last purchase price and configurable pricelists.
+
+## Features
+
+- **Automatic Price Calculation**: Set sale prices based on last purchase price and a configured pricelist
+- **Flexible Discount Handling**: Choose how to apply discounts to the cost:
+  - Without discounts
+  - First discount only
+  - Double discount
+  - Triple discount
+  - Manual update
+- **Tax-Aware Pricing**: Automatically includes tax calculations in pricing
+- **UoM Conversion**: Handles different purchase and sale units of measure
+- **Batch Updates**: Update theoretical prices for multiple products
+- **Product Flags**: Mark products for price updates and track status
+
+## Configuration
+
+1. **Settings > Sales > Automatic Price Configuration**: Select the pricelist for automatic price calculation
+2. **Products > Products**: Configure per product:
+   - **Last purchase price**: Cost at which the product was last purchased
+   - **Last purchase price calculation type**: Choose how to apply discounts
+   - Mark **Last purchase price updated** when prices need to be reviewed
+
+## Price Calculation Types
+
+- **Without Discounts**: Uses base purchase price without discounts
+- **First Discount**: Applies only the first discount
+- **Double Discount**: Applies first and second discount
+- **Triple Discount**: Applies first, second, and third discount
+- **Manual Update**: Price must be set manually
+
+## Usage
+
+1. Products are priced when received from purchase orders
+2. System automatically updates **last_purchase_price** field
+3. Sale price is calculated from the configured pricelist using the cost price
+4. Taxes are automatically applied based on product tax settings
+5. Go to **Products > Update Theoretical Prices** to batch update prices
+
+
+## License
+
+AGPL-3.0 or later