Initial commit: EifelDC - Discord-like Matrix chat platform

Includes server (Rust/Axum API proxy with voice management),
Tauri desktop client with Svelte UI, bot-sdk, Docker infra
(Synapse, PostgreSQL, Coturn, Nginx), and CI/CD pipeline.

infra/scripts/backup.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+INFRA_DIR="$(dirname "$SCRIPT_DIR")"
+BACKUP_DIR="${INFRA_DIR}/backups"
+TIMESTAMP=$(date +%Y%m%d_%H%M%S)
+BACKUP_PATH="${BACKUP_DIR}/${TIMESTAMP}"
+
+mkdir -p "${BACKUP_PATH}"
+
+echo "=== EifelDC Backup ==="
+echo "Backup directory: ${BACKUP_PATH}"
+echo ""
+
+if command -v docker &>/dev/null && docker compose -f "${INFRA_DIR}/docker-compose.yml" ps &>/dev/null 2>&1; then
+    echo "[Docker Mode]"
+
+    echo "[1/4] Backing up PostgreSQL..."
+    docker compose -f "${INFRA_DIR}/docker-compose.yml" exec -T postgres \
+        pg_dump -U synapse synapse > "${BACKUP_PATH}/synapse_db.sql"
+
+    echo "[2/4] Backing up Synapse media..."
+    docker cp eifeldc-synapse:/data/media_store "${BACKUP_PATH}/media_store" 2>/dev/null || true
+
+    echo "[3/4] Backing up Synapse config..."
+    docker cp eifeldc-synapse:/data/homeserver.yaml "${BACKUP_PATH}/homeserver.yaml" 2>/dev/null || true
+    docker cp eifeldc-synapse:/data/signing.key "${BACKUP_PATH}/signing.key" 2>/dev/null || true
+
+    echo "[4/4] Backing up environment config..."
+    cp "${INFRA_DIR}/.env" "${BACKUP_PATH}/.env" 2>/dev/null || true
+else
+    echo "[Native Mode]"
+
+    echo "[1/3] Backing up PostgreSQL..."
+    sudo -u postgres pg_dump synapse > "${BACKUP_PATH}/synapse_db.sql" 2>/dev/null || echo "Warning: Could not dump database"
+
+    echo "[2/3] Backing up Synapse data..."
+    SYNAPSE_DIR="${SYNAPSE_DIR:-/opt/eifeldc/synapse-data}"
+    cp -r "${SYNAPSE_DIR}/homeserver.yaml" "${BACKUP_PATH}/" 2>/dev/null || true
+    cp -r "${SYNAPSE_DIR}/signing.key" "${BACKUP_PATH}/" 2>/dev/null || true
+    cp -r "${SYNAPSE_DIR}/media_store" "${BACKUP_PATH}/" 2>/dev/null || true
+
+    echo "[3/3] Backing up environment config..."
+    cp "${INFRA_DIR}/.env" "${BACKUP_PATH}/.env" 2>/dev/null || true
+fi
+
+COMPRESSED="${BACKUP_DIR}/eifeldc_backup_${TIMESTAMP}.tar.gz"
+tar -czf "${COMPRESSED}" -C "${BACKUP_DIR}" "${TIMESTAMP}"
+rm -rf "${BACKUP_PATH}"
+
+echo ""
+echo "Backup saved: ${COMPRESSED}"
+echo ""
+
+KEEP_COUNT=7
+ls -t "${BACKUP_DIR}"/eifeldc_backup_*.tar.gz 2>/dev/null | tail -n +$((KEEP_COUNT + 1)) | xargs -r rm --
+echo "Old backups cleaned (keeping latest ${KEEP_COUNT})"
+echo "Done!"