Fix HAOS compatibility and update documentation

root/etc/s6-overlay/s6-rc.d/svc-foldingathome/run

@@ -1,27 +1,46 @@
 #!/usr/bin/with-contenv bash
 # shellcheck shell=bash
 
-if [[ -n "${ACCOUNT_TOKEN}" ]] && [[ -n "${MACHINE_NAME}" ]]; then
-    TOKEN_AND_NAME="--account-token ${ACCOUNT_TOKEN} --machine-name ${MACHINE_NAME}"
-else
-    echo '
-***************************************************************************
-***************************************************************************
-****                                                                   ****
-****                                                                   ****
-****    On first run, both the ACCOUNT_TOKEN and the MACHINE_NAME      ****
-**** env vars are required. Please set them and recreate the container ****
-****    unless the instance was previously added to online account.    ****
-****                                                                   ****
-****                                                                   ****
-***************************************************************************
-***************************************************************************
-'
+declare -a args
+
+# Network: bind to all interfaces, allow all connections
+args+=(--http-addresses "0.0.0.0:7396")
+args+=(--allow "0/0")
+
+# FAH account credentials
+if [[ -n "${FAH_USER}" ]]; then
+    args+=(--user "${FAH_USER}")
 fi
 
+if [[ -n "${TEAM}" ]]; then
+    args+=(--team "${TEAM}")
+fi
+
+if [[ -n "${PASSKEY}" ]]; then
+    args+=(--passkey "${PASSKEY}")
+fi
+
+# Power level (light, medium, full)
+if [[ -n "${POWER}" ]]; then
+    args+=(--power "${POWER}")
+fi
+
+# Online account token (new FAH 8 account system)
+if [[ -n "${ACCOUNT_TOKEN}" ]]; then
+    args+=(--account-token "${ACCOUNT_TOKEN}")
+    if [[ -n "${MACHINE_NAME}" ]]; then
+        args+=(--machine-name "${MACHINE_NAME}")
+    fi
+fi
+
+if [[ -z "${FAH_USER}" ]] && [[ -z "${ACCOUNT_TOKEN}" ]]; then
+    echo "INFO: No FAH_USER or ACCOUNT_TOKEN set — folding anonymously."
+fi
+
+# Run from /config so fah-client stores its data there
+mkdir -p /config
+cd /config || exit 1
 
 exec \
     s6-notifyoncheck -d -n 300 -w 1000 -c "nc -z localhost 7396" \
-        cd /config s6-setuidgid abc /app/fah-client \
-            --http-addresses 0.0.0.0:7396 --allow 0/0 ${TOKEN_AND_NAME} \
-            ${CLI_ARGS}
+        /app/fah-client "${args[@]}" ${CLI_ARGS}