- Add SYM_TRASH toolbar button wired to fb_delete_cb (was missing entirely) - Filter '.' and '..' entries in fb_collect_cb so they never appear - Rewrite deleteFile/deleteDir/renameFile to use raw sector scanning instead of getDirEntries linked-list indices (fixes gap mismatch) - Handle root directory correctly (use bootRecord^.rootCluster instead of assuming entry 0 is '.')