The repair path read "the probe answered, but nothing in the answer names a
dep" as "both deps are missing". The POSIX probe is fenced with
`|| echo MISSING`, so the subshell always exits 0 and the unanswered-probe
catch added by #17979 never ran. A node that cannot start (invalid
NODE_OPTIONS, OOM kill, exit 127) therefore produced a bare `MISSING`, and
every reconnect rm -rf'd node_modules/node-pty and node_modules/@parcel/watcher
and burned a 240s npm install that failed the same way. `.install-complete`
from the original install survives, so the relay kept launching with no PTY
and no file watcher, permanently, per host.
Only a marker line that actually names deps is evidence about them; anything
else is `unverifiable` and launches as-is. Also drop `2>/dev/null` from the
POSIX probe and carry stderr into the warning via a new execCommand `onStderr`
hook, so the reason node failed survives. stderr stays its own stream — folded
into stdout it would match the probe's own token strings.
The Windows branch shared the same parser and is fixed with it.
* Fix ssh-relay install on hosts with split shell/SFTP namespaces
On Synology DSM and similar hosts, the SSH shell and SFTP subsystem expose
different absolute paths for the same directory (e.g., /var/services/homes/alice
vs /homes/alice). The relay installer silently picked the wrong path and failed
discovery. This fix implements SFTP namespace detection: each install creates an
unguessable ownership marker and probes both namespaces to detect divergence.
When paths differ, SFTP writes redirect to the candidate namespace while shell
commands keep the canonical path. Markers are random tokens redacted from logs.
* Fix ssh-relay install on hosts with split shell/SFTP namespaces
Strengthen path validation to catch traversal and empty segments in
absolute POSIX paths, preventing security issues. Improve split-namespace
handling with comprehensive wire tests for uploads and file writes.
Ensure system SSH connections bypass namespace mapping entirely rather
than attempting incorrect retargeting.
Neil
Jinjing
