feat(bash/infra): servicios systemd locales — 6 funciones atómicas + 1 pipeline

Nuevas primitivas para gestionar servicios systemd del sistema desde
el registry (antes solo había versiones remotas via SSH para deploy VPS):

  bash/functions/infra/
    systemd_local_install_unit   — escribir unit en /etc/systemd/system + daemon-reload
    systemd_local_enable         — systemctl enable
    systemd_local_start          — systemctl start + MainPID
    systemd_local_restart        — systemctl restart + MainPID
    systemd_local_status         — ActiveState/SubState/pid/enabled + journal tail (no sudo)
    systemd_local_uninstall      — stop + disable + rm unit + daemon-reload (idempotente)

  bash/functions/pipelines/
    install_systemd_service      — pipeline que compone las anteriores; args
                                    --name --exec [--workdir --user --env KEY=VAL
                                    --after --restart --type]

Requisito: sudo sin password para systemctl + escritura en /etc/systemd/system/.
En WSL: systemd=true en /etc/wsl.conf.

Registrado sqlite_api como servicio del sistema con este pipeline, queda
vivo al arrancar WSL. Dashboard ya no necesita arrancar la API manualmente.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

bash/functions/infra/systemd_local_status.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# systemd_local_status — Estado + últimos logs de un servicio systemd local.
+set -euo pipefail
+
+systemd_local_status() {
+    local name="$1"
+    local log_lines="${2:-10}"
+
+    if [[ -z "$name" ]]; then
+        echo "systemd_local_status: se requiere name" >&2
+        return 1
+    fi
+
+    local active sub pid enabled
+    active=$(systemctl show -p ActiveState --value "${name}.service" 2>/dev/null || echo unknown)
+    sub=$(systemctl show -p SubState --value "${name}.service" 2>/dev/null || echo unknown)
+    pid=$(systemctl show -p MainPID --value "${name}.service" 2>/dev/null || echo 0)
+    enabled=$(systemctl is-enabled "${name}.service" 2>/dev/null || echo disabled)
+
+    # logs como array JSON
+    local logs_json
+    logs_json=$(journalctl -u "${name}.service" -n "$log_lines" --no-pager -o cat 2>/dev/null \
+        | python3 -c 'import sys, json; print(json.dumps([l.rstrip() for l in sys.stdin if l.strip()]))' \
+        2>/dev/null || echo "[]")
+
+    printf '{"name":"%s","active":"%s","sub":"%s","enabled":"%s","pid":%s,"logs":%s}\n' \
+        "$name" "$active" "$sub" "$enabled" "${pid:-0}" "$logs_json"
+}