Adds build step for protobuff

esp32/scripts/pre_build.py

@@ -1,7 +1,17 @@
 from pathlib import Path
+import subprocess
+import sys
 
 Import("env")
 
-filesystem_dir = env["PROJECT_DIR"] + "/esp32/data"
+project_dir = Path(env["PROJECT_DIR"])
+filesystem_dir = project_dir / "esp32" / "data"
 
-Path(filesystem_dir).mkdir(exist_ok=True)
+Path(filesystem_dir).mkdir(exist_ok=True)
+
+proto_script = project_dir / "esp32" / "scripts" / "compile_protos.py"
+if proto_script.exists():
+    print("Running proto compilation...")
+    result = subprocess.run([sys.executable, str(proto_script)], cwd=str(project_dir))
+    if result.returncode != 0:
+        print("Warning: Proto compilation failed")