features/usb-automount.sh (installed via ./install.sh --feature, flag
usb-automount) mounts every unmounted removable block device at
/media/<label> — world-writable via -o umask=000 (fallback plain mount),
label-collision bump -2/-3, no-label -> usb-<name>. First root run
self-installs the hotplug udev rule (/etc/udev/rules.d/99-usb-automount.rules,
SYSTEMD_WANTS=usb-automount.service) + udevadm reload/trigger; an existing
rule is never overwritten. systemd/usb-automount.service (Type=oneshot,
WantedBy=multi-user.target) covers boot + hotplug + manual start, gated in
postinstall.sh's systemd loop exactly like autostart. Purpose: a plugged-in
stick is ready for pos system backup's post-verify USB copy without manual
mounting. Docs: SYSTEMD/SCRIPTS/README/AGENT_Context (tree, filetable —
postinstall.sh count corrected 152->163, it was already stale). Verified:
stub suite /tmp/opencode/usb-automount-test 47/47 green; make gen && make check.
restart <gid>: re-queue from history — torrents via rebuilt magnet
(urn:btih: + &tr= trackers), HTTP via original URIs keeping dir/out;
--continue=true resumes partials, complete files verify instantly.
retry <gid|all>: waits out internet outages (NET_PROBE seam,
--interval/--max-wait), re-queues and re-verifies; aria2 error 3 = real
problem → diagnosed + marked permanent (url:/bt: ids in download.retry,
skipped by retry all, manual restart overrides); --once/--quiet for the
healer timer.
Healer: pos-aria2-retry.{service,timer} user units — arms on download
start (add/torrent/metalink/restart), disables when nothing left.
watch <gid> auto-restarts after an outage.
Fixes from stub-suite review: ensure_healer missing from submit paths;
RESTART_NAME lost across do_restart subshell (download_name helper);
restart exited 1 (tmux test as last statement).
Stub harness (/tmp/opencode/dl-test) 119/119 green; make gen && make check green.
Docs: POS.md rows, howto/network.md outage recipe, SYSTEMD.md user units.
- lib/notify.sh: route notify_send to every platform in NOTIFY_PLATFORM
(notify.env, default telegram; comma-separated = send to all). New
platforms need only a bin/pos-communication-<p> sender implementing
'send <value> [--markdown]' (Matrix/Synapse ready)
- pos-communication-telegram: add --markdown as alias for --parse-mode
markdown to match the sender contract
- lib/common.sh: load_system_env() — shared ~/.config/linux_post_install/
system.env for pos-system-* tools (env exported > file > default)
- pos-system-health/backup: load system.env and show effective dynamic
values (NOTIFY_PLATFORM, HEALTH_BACKUP_MAX_AGE_DAYS, BACKUP_SERVICE_ROOTS)
in --help
- config/system.env + config/notify.env templates copied by postinstall
- systemd/pos-health.service: EnvironmentFile for both configs so the
daily digest honors them
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