Terminal: show the live full working-directory path in the toolbar

The toolbar showed a static ~/public_html. The jailed shell now reports its cwd
via OSC 7 each prompt (jail rcfile keeps the user's prompt + emits it); xterm
captures it and the toolbar shows the full path (/home/<user>/...), updating as
the user cd's. Launcher/rcfile committed in deployment/ for reproducibility.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

deployment/ladill-jail-bashrc

@@ -0,0 +1,8 @@
+# Ladill jail interactive shell rc: keep the user's shell config, start in the
+# requested directory, and report the working directory to the control panel via
+# OSC 7 on every prompt so the toolbar shows the live full path.
+[ -r /etc/bash.bashrc ] && . /etc/bash.bashrc
+[ -r "$HOME/.bashrc" ] && . "$HOME/.bashrc"
+[ -n "${LADILL_START_DIR:-}" ] && cd "$LADILL_START_DIR" 2>/dev/null
+__ladill_cwd() { printf '\033]7;file://%s%s\007' "${HOSTNAME:-ladill}" "$PWD"; }
+case "$-" in *i*) PROMPT_COMMAND="__ladill_cwd${PROMPT_COMMAND:+; $PROMPT_COMMAND}"; __ladill_cwd ;; esac

deployment/ladill-jailsh

@@ -28,5 +28,5 @@ mount -t tmpfs -o mode=0755,nosuid,nodev tmpfs "$JAIL/run"
 mount --bind "$JAIL/run/passwd" "$JAIL/etc/passwd"
 mount --bind "$JAIL/run/group" "$JAIL/etc/group"
 export HOME="/home/$U" USER="$U" LOGNAME="$U" SHELL=/bin/bash PATH=/usr/bin:/bin
-export TERM="${TERM:-xterm-256color}"
-exec /usr/sbin/chroot --userspec="$UID_:$GID_" "$JAIL" /bin/bash -l -c "cd '/home/$U$REL' 2>/dev/null || cd ~; exec /bin/bash -l"
+export TERM="${TERM:-xterm-256color}" LADILL_START_DIR="/home/$U$REL" HOSTNAME="$(hostname 2>/dev/null || echo ladill)"
+exec /usr/sbin/chroot --userspec="$UID_:$GID_" "$JAIL" /bin/bash --rcfile /etc/ladill-jail-bashrc -i

deployment/setup-terminal-jail.sh

@@ -27,6 +27,9 @@ install -d -m 1777 "$JAIL/tmp"
 # any customer enumerate every tenant. ladill-jailsh injects a per-session
 # passwd/group (root + the current user only) inside each session's namespace.
 
+echo "==> Installing the interactive rc (keeps user prompt + reports cwd via OSC 7)"
+install -o root -g root -m 644 "$(dirname "$0")/ladill-jail-bashrc" "$JAIL/etc/ladill-jail-bashrc"
+
 echo "==> Installing the jailed-shell launcher + scoped sudoers"
 install -o root -g root -m 755 "$(dirname "$0")/ladill-jailsh" /usr/local/sbin/ladill-jailsh
 echo 'www-data ALL=(root) NOPASSWD: /usr/local/sbin/ladill-jailsh *' > /etc/sudoers.d/ladill-jailsh