feat: rename rails/ to tools/ and add service tool suites

Rename the `rails/` directory to `tools/` for agent discoverability —
agents frequently failed to locate helper scripts due to the non-intuitive
directory name. Add backward-compat symlink `rails/ → tools/`.

New tool suites:
- Authentik: auth-token, user-list, user-create, group-list, app-list,
  flow-list, admin-status (8 scripts)
- Coolify: team-list, project-list, service-list, service-status, deploy,
  env-set (7 scripts)
- Woodpecker: pipeline-list, pipeline-status, pipeline-trigger (3 stubs)
- GLPI: session-init, computer-list, ticket-list, ticket-create, user-list
  (6 scripts)
- Health: stack-health.sh — stack-wide connectivity check

Infrastructure:
- Shared credential loader at tools/_lib/credentials.sh
- install.sh creates symlink + chmod on tool scripts
- All ~253 rails/ path references updated across 68+ files

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tools/authentik/flow-list.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+#
+# flow-list.sh — List Authentik flows
+#
+# Usage: flow-list.sh [-f format] [-d designation]
+#
+# Options:
+#   -f format        Output format: table (default), json
+#   -d designation   Filter by designation (authentication, authorization, enrollment, etc.)
+#   -h               Show this help
+set -euo pipefail
+
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.config/mosaic}"
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$MOSAIC_HOME/tools/_lib/credentials.sh"
+load_credentials authentik
+
+FORMAT="table"
+DESIGNATION=""
+
+while getopts "f:d:h" opt; do
+  case $opt in
+    f) FORMAT="$OPTARG" ;;
+    d) DESIGNATION="$OPTARG" ;;
+    h) head -13 "$0" | grep "^#" | sed 's/^# \?//'; exit 0 ;;
+    *) echo "Usage: $0 [-f format] [-d designation]" >&2; exit 1 ;;
+  esac
+done
+
+TOKEN=$("$SCRIPT_DIR/auth-token.sh" -q)
+
+PARAMS="ordering=slug"
+[[ -n "$DESIGNATION" ]] && PARAMS="${PARAMS}&designation=${DESIGNATION}"
+
+response=$(curl -sk -w "\n%{http_code}" \
+  -H "Authorization: Bearer $TOKEN" \
+  "${AUTHENTIK_URL}/api/v3/flows/instances/?${PARAMS}")
+
+http_code=$(echo "$response" | tail -n1)
+body=$(echo "$response" | sed '$d')
+
+if [[ "$http_code" != "200" ]]; then
+  echo "Error: Failed to list flows (HTTP $http_code)" >&2
+  exit 1
+fi
+
+if [[ "$FORMAT" == "json" ]]; then
+  echo "$body" | jq '.results'
+  exit 0
+fi
+
+echo "NAME                          SLUG                          DESIGNATION       TITLE"
+echo "----------------------------  ----------------------------  ----------------  ----------------------------"
+echo "$body" | jq -r '.results[] | [
+  .name,
+  .slug,
+  .designation,
+  (.title // "—")
+] | @tsv' | while IFS=$'\t' read -r name slug designation title; do
+  printf "%-28s  %-28s  %-16s  %s\n" \
+    "${name:0:28}" "${slug:0:28}" "$designation" "${title:0:28}"
+done