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workstation: tmux sessions survive devvm reboots (save timer + boot restore)
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Viktor: emo's open web-terminal sessions must persist across reboots.
Claude conversations were already durable on disk; the volatile part
was the tmux wiring (which named session runs which conversation).

t3-tmux-sessions save (5-min timer) snapshots every roster user's
sessions to /var/lib/t3-tmux-state/<user>.tsv — conversation uuid
taken from argv --resume (self-sustaining once restored) or the
newest transcript in the cwd-slug project dir created after process
start (fresh launcher sessions; claude does NOT hold its transcript
fd open, so fd-sniffing was a dead end). t3-tmux-sessions restore
(boot oneshot, also safe after partial loss) recreates missing
sessions with claude --resume <uuid>. Reconciler self-heals both
units' enablement.

Verified live: emo's 5 sessions snapshotted with correct uuids;
killed R730-cooling -> restore brought it back resuming the same
conversation (context meter identical); other sessions untouched.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Viktor Barzin 2026-06-10 17:39:32 +00:00
parent 59a531b8e0
commit 2e4f48f3fc
6 changed files with 145 additions and 0 deletions
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5
scripts/t3-provision-users.sh
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@ -256,6 +256,11 @@ done < <(jq -r '.ports | to_entries[] | [.key, .value] | @tsv' "$desired_file")
# breaking nightly mid-day and took out auth for everyone. `enable` (no --now) just arms
# the 04:00 schedule; fresh boxes get t3 from setup-devvm.sh's pinned install, not here.
run systemctl enable t3-autoupdate.timer >/dev/null 2>&1 || true
# tmux session persistence: periodic snapshot + boot-time restore (reboot
# survival for users' named claude sessions). Safe to --now: save is a
# read-only snapshot; restore is per-session idempotent.
run systemctl enable --now t3-tmux-save.timer >/dev/null 2>&1 || true
run systemctl enable t3-tmux-restore.service >/dev/null 2>&1 || true
# 6) regenerate /etc/ttyd-user-map + dispatch.json from the desired state (SSoT:
# a roster entry removed here DISAPPEARS, which is what the offboarding cut relies on)