docs: Deprioritize Linux cross-compilation (Task #4a)

- Moved Task #4a from TODO.md (Next Up) to PROJECT_CONTEXT.md (Future Optimizations).
- This reflects its current status as a lower-priority, long-term goal.

1 files changed, 0 insertions, 2 deletions

diff --git a/TODO.md b/TODO.md
index 2df372b..41d3982 100644
--- a/TODO.md
+++ b/TODO.md
@@ -4,8 +4,6 @@ This file tracks the next set of immediate, actionable tasks for the project.
 
 ## Next Up
 
--   **Task #4: Finalize Build System**
-    -   [ ] 4a. Implement Linux cross-compilation from macOS.
 -   **Task #8: Implement Final Build Stripping**
     - [ ] Define and document a consistent set of rules for code stripping under the `STRIP_ALL` macro.
     - [ ] Example sub-tasks: remove unused functions, strip debug fields from structs, simplify code paths where possible.