1. **Display timing fixes for ESP32-S3-LCD-4.3**
- Corrected RGB panel timing parameters (hsync/vsync porch values)
- **Critical fix**: Set `pclk_active_neg = 1` (required for ST7262 panel)
- Added explicit PCLK speed of 16MHz
- These changes fix the blank/unstable display issue on Waveshare 4.3" boards
2. **Added memory diagnostics**
- Prints free heap and PSRAM at boot
- Helps verify PSRAM is properly initialized
3. **Duplicate loop() function**
- The `loop()` function appears twice in the .ino file
- Contains identical code for touch handling, hold-to-silence, and serial commands
- This is a build error waiting to happen
4. **New scaffold script**
- Added comprehensive project scaffolding script (`scaffold.sh`)
- Generates complete multi-target build structure with shared library and per-board drivers
- **ESP32-S3-LCD-4.3 board should now display correctly** (was likely blank before due to wrong timing)
- **Build will fail** due to duplicate `loop()` definition - needs immediate cleanup
- The scaffold script enables rapid project regeneration/setup for new installations
David Gwilliam
2d0427604c