Add section organization to 12_compression module: Add DEVELOPMENT section header

- Insert ## 🔧 DEVELOPMENT header before first test function
- Organizes module according to educational structure guidelines
- Maintains all existing functionality and test execution
- Improves readability and navigation for educational use

modules/source/12_compression/compression_dev.py

@@ -367,6 +367,8 @@ class CompressionMetrics:
 
 # %% [markdown]
 """
+## 🔧 DEVELOPMENT
+
 ### 🧪 Unit Test: Compression Metrics Analysis
 
 This test validates your `CompressionMetrics` class implementation, ensuring it accurately calculates model parameters, memory usage, and compression statistics for optimization analysis.