fix(files): 编辑器保存和打开也逐跳核对 SHA-256，途中变了的内容不写盘也不打开

panel/src/i18n/resources/en-US/errors.json

@@ -72,9 +72,10 @@
   "upload_incomplete": "The upload stopped before the whole file arrived, so nothing was changed. Try again.",
   "length_required": "The upload did not say how large it is, so it was refused. Upload it again from the panel.",
   "digest_mismatch": "The file was changed on its way to the server, so it was refused and nothing was written. Try again.",
-  "digest_required": "The upload came without a checksum, so it was refused. Reload the panel and upload it again.",
-  "bad_digest": "The upload's checksum was malformed, so it was refused. Reload the panel and upload it again.",
+  "digest_required": "The request came without a checksum, so it was refused. Reload the panel and try again.",
+  "bad_digest": "The request's checksum was malformed, so it was refused. Reload the panel and try again.",
   "file_unreadable": "The file could not be read: it was changed, moved or deleted after it was picked. Pick it again and upload.",
+  "read_damaged": "The file arrived damaged, so it was not opened: saving it would write the damage back. Open it again.",
   "upload_not_found": "This upload is gone: it was cancelled, already landed, sat idle for 6 hours, or the panel service restarted. Upload the file again.",
   "too_many_uploads": "You already have 4 large uploads in progress. Wait for one to finish, or cancel one, and try again.",
   "op_lost": "The operation's progress can no longer be read. Refresh the list to see whether the file landed.",