docs(todo): Archive completed tasks

- Moved completed items from the main list to the 'Past Tasks' section as per the file's instructions.

1 files changed, 2 insertions, 2 deletions

diff --git a/TODO.md b/TODO.md
index 414ff0f..d73b2f3 100644
--- a/TODO.md
+++ b/TODO.md
@@ -10,9 +10,9 @@ This file tracks the next set of immediate, actionable tasks for the project.
 -   **Task #10: Optimize Spectrogram Assets**
     -   [ ] Modify `spectool` to trim leading and trailing silent frames from `.spec` files to reduce asset size.
 
-## Completed
+## Past Tasks
 
 -   Centralize generated files into `src/generated`.
 -   Vertically compact C++ source code.
 -   Create top-level `README.md`.
--   Move non-essential documentation to `doc/`.
\ No newline at end of file
+-   Move non-essential documentation to `doc/`.