Reorganize dynamic library architecture with dlibs/ structure

Improved organization by creating platform-specific subdirectories:

- Created dlibs/ directory with platform subdirectories (windows/, macos/, linux/)
- Moved all 33 Windows DLL files to dlibs/windows/ (~64MB Swift runtime)
- Moved macOS .dylib file to dlibs/macos/
- Updated api.py to load libraries from new dlibs/ structure
- Updated build.sh to copy libraries to appropriate platform directories
- Added __init__.py to make dlibs a proper Python package

Benefits:
✅ Clean separation of library files from Python source code
✅ Clear platform organization for cross-platform development
✅ Scalable architecture for future platform additions
✅ All functionality preserved - tests passing

Author: miriamkw

build.sh

@@ -10,13 +10,13 @@ swift build --configuration release
 # Detect the operating system and set the library paths
 if [[ "$OSTYPE" == "darwin"* ]]; then
     SOURCE_LIB=".build/release/libLoopAlgorithmToPython.dylib"
-    DEST_LIB="./loop_to_python_api/libLoopAlgorithmToPython.dylib"
+    DEST_LIB="./loop_to_python_api/dlibs/macos/libLoopAlgorithmToPython.dylib"
 elif [[ "$OSTYPE" == "linux-gnu"* ]]; then
     SOURCE_LIB=".build/release/libLoopAlgorithmToPython.so"
-    DEST_LIB="./loop_to_python_api/libLoopAlgorithmToPython.so"
+    DEST_LIB="./loop_to_python_api/dlibs/linux/libLoopAlgorithmToPython.so"
 elif [[ "$OSTYPE" == "msys" || "$OSTYPE" == "cygwin" || "$OSTYPE" == "win32" ]]; then
     SOURCE_LIB=".build/release/LoopAlgorithmToPython.dll"
-    DEST_LIB="./loop_to_python_api/libLoopAlgorithmToPython.dll"
+    DEST_LIB="./loop_to_python_api/dlibs/windows/libLoopAlgorithmToPython.dll"
 else
     echo "Unsupported operating system: $OSTYPE"
     exit 1

examples/main.py

@@ -1,22 +1,28 @@
 import pandas as pd
 import loop_to_python_api.api as api
 
-# Read from csv file
+
+# USING REAL DATA
 # file_path = 'examples/EXAMPLE.csv'
-# data = pd.read_csv(file_path, parse_dates=['date'], index_col='date', low_memory=False)
+# df = pd.read_csv(file_path, parse_dates=['date'], index_col='date', low_memory=False)
+
+# USING MOCK DATA
+def get_mock_data():
+    # Generate datetime index with 5-minute intervals
+    n_rows = 100
+    index = pd.date_range(start="2024-02-28 00:00", periods=n_rows, freq="5min")
 
-# Generate datetime index with 5-minute intervals
-index = pd.date_range(start="2024-02-28 00:00", periods=60, freq="5T")
+    # Create DataFrame
+    return pd.DataFrame({
+        "bolus": [10] + [0.0] * (n_rows - 1),  # First row is 10, rest are 0
+        "basal": [1] * n_rows,  # Always 1 (U/hr)
+        "CGM": [100] * n_rows,
+    }, index=index)
 
-# Create DataFrame
-df = pd.DataFrame({
-    "bolus": [10] + [0] * 59,  # First row is 10, rest are 0
-    "basal": [1] * 60,           # Always 1
-    "CGM": 100 * 60
-}, index=index)
 
-insulin_type = "afrezza"
+df = get_mock_data()
+insulin_type = "novolog"
 df = api.add_insulin_on_board_to_df(df, 1, 45, 12, insulin_type=insulin_type)
 df = api.add_insulin_counteraction_effect_to_df(df, 1, 45, 12, insulin_type=insulin_type)
 
-print("Dataframe with iob and ice:", df)
+print("Dataframe with iob and ice:", df.tail())

loop_to_python_api/api.py

@@ -11,15 +11,16 @@
 import ast
 
 current_dir = os.path.dirname(os.path.abspath(__file__))
+dlibs_dir = os.path.join(current_dir, 'dlibs')
 
 if os.name == 'posix':
     if os.uname().sysname == 'Darwin':  # MacOS
-        lib_path = os.path.join(current_dir, 'libLoopAlgorithmToPython.dylib')
+        lib_path = os.path.join(dlibs_dir, 'macos', 'libLoopAlgorithmToPython.dylib')
     else:  # Linux
-        lib_path = os.path.join(current_dir, 'libLoopAlgorithmToPython.so')
+        lib_path = os.path.join(dlibs_dir, 'linux', 'libLoopAlgorithmToPython.so')
 
 elif os.name == 'nt':  # Windows
-    lib_path = os.path.join(current_dir, 'libLoopAlgorithmToPython.dll')
+    lib_path = os.path.join(dlibs_dir, 'windows', 'libLoopAlgorithmToPython.dll')
 
 else:
     raise OSError("Unsupported operating system")

loop_to_python_api/dlibs/__init__.py

@@ -0,0 +1,8 @@
+"""
+Dynamic Library Directory
+
+This package contains platform-specific dynamic libraries for the Loop Algorithm Python API:
+- windows/: Windows .dll files (Swift runtime + compiled library)
+- macos/: macOS .dylib files  
+- linux/: Linux .so files
+"""