cad14e2b5a
The decoded view is a read-only field table, so pressing Edit there did nothing (no readonly inputs to strip) and Save found nothing to write. - Remove the redundant Read button: the Raw/Decoded pills already read the file, so they become explicit read actions — Read raw / Read decoded (Читать сырые данные / Декодировать). They are buttons now so the server/card availability model disables them like the old Read button did. - Edit raw (Редактировать сырые данные) always edits the hex view: from decoded (or with no content loaded yet) it switches back to raw and reads the file first; the decoded view stays read-only. - Save/Cancel moved next to Edit raw (right-aligned group); the pills are inert and dimmed while editing (mode switching would discard unsaved changes). - Tests: frontend/tests/fs_edit.test.js (skipRead, edit guard, decoded auto-switch ordering, read failure abort, cancel/reset); help EN/RU.