feat(@scripts): ✨ add ssh keepalive for tmux resilience

Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>

bin/rclaude

@@ -319,6 +319,13 @@ EOF
 _PICK_PY_SNIPPET='for _p in python3.13 python3.12 python3.11 python3; do _b=$(command -v "$_p" 2>/dev/null) || continue; "$_b" -c "import claude_code_batch_sdk" 2>/dev/null && PY="$_b" && break; done; [ -z "${PY:-}" ] && { echo "rclaude: no python with claude_code_batch_sdk found" >&2; exit 2; }'
 _REMOTE_TRIAGE_BOOT='export PATH=$HOME/.local/bin:/opt/homebrew/bin:$PATH; '"$_PICK_PY_SNIPPET"';'
 
+# Keepalive options for interactive ssh -t sessions. Sends a keepalive every
+# 30s; tolerates 6 consecutive failures (~3 min of network blip) before the
+# transport drops. Pair with `tmux new-session -A` below so a manual reconnect
+# (re-running cc/rclaude resume) lands back in the same tmux session — the
+# work itself is already protected by tmux on the remote.
+_SSH_LIVE_OPTS='-o ServerAliveInterval=30 -o ServerAliveCountMax=6 -o TCPKeepAlive=yes'
+
 # Run the triage helper on <host> with the supplied extra args. Stdout is the
 # raw TSV emitted by _claude-triage (one row per session).
 list_triage_on() {
@@ -693,7 +700,7 @@ cmd_resume() {
             if is_local "$_host"; then
                 exec tmux attach -t "$_target"
             else
-                exec ssh -t "$_host" tmux attach -t "$_target"
+                exec ssh -t $_SSH_LIVE_OPTS "$_host" tmux attach -t "$_target"
             fi
             ;;
         disk)
@@ -907,4 +914,8 @@ fi
 
 sync_tmux_conf "$host"
 inner=$(build_inner "$dir")
-exec ssh -t "$host" "tmux new-session -s '${session}' \"${inner}\""
+# `new-session -A` attaches if a session of that name already exists, so
+# re-running rclaude after a broken pipe lands you back in the same tmux
+# session instead of erroring with "duplicate session". Combined with
+# _SSH_LIVE_OPTS this tolerates short network drops without losing work.
+exec ssh -t $_SSH_LIVE_OPTS "$host" "tmux new-session -A -s '${session}' \"${inner}\""