Document v1.1.4 session: Fixed price field enhancement

Added session history for v1.1.4 which introduced:
- Fixed price field in Composable Options tab
- JavaScript toggle based on pricing mode selection
- Improved admin UX with progressive disclosure

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -248,6 +248,11 @@ unzip -l wc-composable-product-vX.X.X.zip
 # IMPORTANT: Ensure vendor/ is included!
 ```
 
+## Bugs found
+
+- There is a bug related to twig in the frontend area. Documented in `logs/fatal-errors*.log`
+- Translate the admin area, too
+
 ## Session History
 
 ### v1.0.0 - Initial Implementation & Release (2024-12-31)
@@ -589,7 +594,7 @@ Plugin was installable and activatable, but WordPress showed incompatibility war
 
 - WooCommerce Update Manager
 - WooCommerce Analytics
-- WooCommerce Tier and Package Prices (tpp/)
+- WooCommerce Tier and Package Prices
 
 No detailed error logs available initially.
 
@@ -671,6 +676,71 @@ Translation files updated (392559d) to include all 8 stock-related strings acros
 
 ---
 
+### v1.1.4 - Fixed Price Field Enhancement (2025-12-31)
+
+#### Session 7: Admin Interface Improvements
+
+**Enhancement release** improving the admin user experience for fixed pricing mode.
+
+**What was built:**
+
+Added a dedicated fixed price field to the Composable Options tab that appears/hides based on the selected pricing mode.
+
+**Implementation details:**
+
+1. **Admin UI Enhancement** (includes/Admin/Product_Data.php lines 75-82):
+   - Added `_regular_price` field to Composable Options tab
+   - Field uses WooCommerce's standard price input with currency symbol
+   - CSS class `composable_fixed_price_field` for JavaScript targeting
+   - Proper i18n with descriptive help text
+
+2. **JavaScript Toggle Logic** (assets/js/admin.js lines 39-54):
+   - Added `toggleFixedPriceField()` function
+   - Shows field only when pricing mode is "fixed"
+   - Hides field for "sum" mode or when using global default
+   - Triggers on page load and when pricing mode changes
+
+3. **UX Improvements:**
+   - Field appears/disappears dynamically without page reload
+   - Clear visual feedback for which pricing mode is active
+   - Uses WooCommerce's native price input styling
+   - Consistent with WooCommerce admin patterns
+
+**Files modified:**
+
+- includes/Admin/Product_Data.php:
+  - Line 66: Simplified pricing mode description text
+  - Lines 75-82: Added fixed price field with wrapper class
+- assets/js/admin.js:
+  - Lines 39-54: Added price field toggle functionality
+
+**User experience improvements:**
+
+- ✅ Fixed price field now visible in Composable Options tab
+- ✅ Field automatically shows/hides based on pricing mode selection
+- ✅ Eliminates confusion about where to set the fixed price
+- ✅ Follows WooCommerce UI/UX conventions
+
+**Key lessons learned:**
+
+1. **Reuse Standard Fields**: Using `_regular_price` instead of custom meta leverages WooCommerce's existing price handling
+2. **Progressive Disclosure**: Show/hide fields based on context reduces cognitive load
+3. **JavaScript + CSS Classes**: Using semantic class names (`composable_fixed_price_field`) makes JS targeting clean
+4. **Trigger on Load**: Always call toggle functions on page load to set initial state
+5. **Native WooCommerce Patterns**: Using `woocommerce_wp_text_input()` with `data_type: 'price'` ensures proper formatting
+
+**Testing considerations:**
+
+- [ ] Verify fixed price field appears when pricing mode is "fixed"
+- [ ] Verify field hides when pricing mode is "sum" or default
+- [ ] Test price value persistence after save
+- [ ] Ensure price validation works correctly
+- [ ] Check currency symbol displays for all locales
+
+**Status:** Ready for testing and release
+
+---
+
 **For AI Assistants:**
 
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