feat: container-based Bitwarden CLI, no host Node.js

Adds the dockerized bw deployment in production use on the TSGCOO
orchestration host since 2026-08-13: pinned debian-slim image carrying
the pre-compiled bw binary, an in-container auth lifecycle entrypoint
(config, API-key login, unlock, sync), a transparent host wrapper, and
a one-command installer.

ADR-002 records the decision and supersedes ADR-001 for BW CLI
purposes: hosts keep zero language runtimes. Known caveat documented:
the upstream "native" binary is a Node.js SEA, so Node is embedded in
the image though absent from all hosts.

Shellcheck clean (zero warnings incl. info-level).

bin/bw-entrypoint.sh

@@ -0,0 +1,44 @@
+#!/bin/sh
+# bw-entrypoint.sh — Bitwarden auth lifecycle, runs inside the container.
+#
+# Mounted at /opt/bw/entrypoint.sh by the host-side wrapper (bw-cli.sh).
+# Handles: server config, API-key login, vault unlock, sync.
+# Then execs the real bw command with BW_SESSION set.
+#
+# API key authentication does NOT require TOTP. The API key itself is
+# obtained from an authenticated web vault session, so 2FA is already
+# satisfied at key-generation time.
+#
+# This script intentionally uses /bin/sh (not bash) for minimal container
+# compatibility. shellcheck directive below silences the "not bash" note.
+# shellcheck shell=sh
+
+set -e
+
+BW_SERVER="${BW_SERVER:-https://pwvault.turnsys.com}"
+
+# Suppress BW CLI data-dir creation noise and telemetry.
+export BW_NO_SENTRY=true
+
+# --- Step 1: Configure server (fails harmlessly if already logged in) ---
+bw config server "$BW_SERVER" >/dev/null 2>&1 || true
+
+# --- Step 2: Login via API key (silently skips if already authenticated) ---
+bw login --apikey >/dev/null 2>&1 || true
+
+# --- Step 3: Unlock the vault ---
+printf '%s' "$BW_PASSWORD" > /tmp/.bwpw
+SESS=$(bw unlock --passwordfile /tmp/.bwpw --raw 2>/dev/null)
+rm -f /tmp/.bwpw
+if [ -z "$SESS" ]; then
+    echo "bw: unlock failed. Check BW_PASSWORD in ~/.config/bw/env" >&2
+    echo "    Values must be single-quoted; \$ chars get mangled if unquoted." >&2
+    exit 1
+fi
+
+# --- Step 4: Sync ---
+bw sync --session "$SESS" >/dev/null 2>&1 || true
+
+# --- Step 5: Execute the requested command ---
+export BW_SESSION="$SESS"
+exec bw "$@"