[REPO] Fix static folder structure in dashboard

[ezehf2]

The src/dashboard/static/ folder currently has style.css and script.js sitting directly inside it rather than in their correct subfolders. Move style.css into src/dashboard/static/css/ and script.js into src/dashboard/static/js/. After moving, update the references in base.html to point to the new paths and confirm the dashboard still loads correctly before committing. Commit with message [REPO] Fix static folder structure.