Root cause of "I'm root admin but the editor says read-only."
loader.js parses the listing JSON and stamps `writable` onto the raw
entry. tree.js:newNode() then copies every other field (name, url,
isDir, size, modTime, ext, handle, virtual …) into the tree node —
but dropped `writable`. So `node.writable` was always undefined and
`canSave(node)` short-circuited to false, mounting the YAML and
markdown editors read-only even for an elevated admin where the
server had correctly stamped writable=true.
Symptom: red banner / read-only mode regardless of admin status.
Server-side log line was correct (elevated=true active_admin=true
chain_admin_level=0); the bit just never reached the editor.
One-line fix: include `writable: !!raw.writable` alongside `virtual`
in the tree-node initialiser. Verified end-to-end against the live
bitnest fixture — every entry now carries the bit through.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
ZDDC
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