added draft of SIPNET project

Author: dlebauer

src/pages/gsoc_ideas.mdx

@@ -137,6 +137,38 @@ Medium
 # This comment section for ideas that may be potentially viable in future (with revision)
 
 
+### [Refactoring Compile-time Flags to Runtime Flags in SIPNET](#sipnet)
+
+#### **Project Overview**
+
+The ecosystem SIPNET is a core component of many PEcAn analyses. SIPNET is compiled with multiple compile-time flags that control whether different features are turned on and off. Thus, as currently configured, each model structure requires a separate compiled binary. 
+
+This project will refactor these flags to be runtime-configurable via command-line arguments or a configuration file, improving usability and testing efficiency.
+
+#### **Expected Outcomes**
+
+- Convert selected SIPNET compile-time flags to runtime options.
+- Develop a global configuration object for managing runtime flags.
+- Improve testability by enabling different configurations without recompiling.
+
+**Prerequisites**
+
+- Required: C, experience with compilers and build systems.
+- Helpful: Understanding of simulation models.
+
+**Mentor(s)**
+
+- David LeBauer (@dlebauer)
+- Mike Longfritz
+
+**Duration**
+- Medium (175hr) or Large (350hr)
+
+**Difficulty**
+- Medium to Large
+
+
+
 #### BETYdb R data package
 
 BETYdb's web front end is built on a version of Ruby on Rails that is functional byt no longer supported. A key feature of BETYdb is that the data is open and accessible.