feat(2.0): Phase 5 — Betrieb, Observability + Politur

Backup: services/backup.py (Memory-SQLite inkl. WAL/SHM + Configs, retain 7)
+ deploy/backup.sh + POST /api/system/backup + GET /api/system/backups.
Services-Health: GET /api/system/services (aggregierte Reachability +
Observability-Links). Frontend: SystemView mit Dienste-Health + Backup-
Button + Links; Theme-Toggle (Hell/Dunkel, persistent).

Lokal verifiziert: Backup-Snapshot + services-Aggregat (TestClient),
Frontend-Build + Browser (Light-Mode bestaetigt via computed styles).
Damit Phasen 0-5 lokal fertig. Docs aktualisiert.

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

deploy/backup.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+# Backup der Shared-Memory-SQLite + Configs (cron-bar auf der Box).
+# Behält die letzten 7 Snapshots. Identisch zur /api/system/backup-Logik.
+set -euo pipefail
+
+MODELS_DIR="${MC_MODELS_DIR:-/srv/models}"
+MEM_DB="${MC_MEMORY_DB:-$MODELS_DIR/mc2-memory.db}"
+LSWAP="${MC_CONFIG_PATH:-/etc/llama-swap/config.yaml}"
+GW="${MC_GATEWAY_CONFIG:-/opt/mission-control-2/gateway/config.yaml}"
+DEST="$MODELS_DIR/mc2-backups/$(date +%Y%m%d-%H%M%S)"
+
+mkdir -p "$DEST"
+for f in "$MEM_DB" "$MEM_DB-wal" "$MEM_DB-shm" "$LSWAP" "$GW"; do
+  [ -f "$f" ] && cp -p "$f" "$DEST/" || true
+done
+
+# nur die letzten 7 behalten
+ls -1dt "$MODELS_DIR"/mc2-backups/*/ 2>/dev/null | tail -n +8 | xargs -r rm -rf
+echo "OK — Backup unter $DEST"