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R-Scope folder sync does NOT include these — upload to public_html root
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From: X:\lab.rnote.jp\public_html\

  root-proxy.php
  scope-proxy.php          (optional)
  r-scope.php              (optional alias)
  r-scope-ping.php         (test, delete after OK)
  lib/rscope-boot.php      (optional — root-proxy is now self-contained)

  api/tfm/Rnote-filemanager.php   (shim only, <500 bytes)

After R-Scope/ folder is synced, upload the files above once.
Then open: https://lab.rnote.jp/root-proxy.php

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