Initial commit: PDF OCR Hotfolder v0.1.0

Komplettes Rewrite des alten Bash-Tools `pdf-tool` in Python.
- ocrmypdf als Library, watchdog für Hotfolder, ThreadPool für Parallelität
- Upload-Targets: folder, Nextcloud (WebDAV), SFTP
- E-Mail-Notify, optional veraPDF
- Interaktiver Installer mit Service-User-Support (lokal + AD via SSSD)

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

update.sh

@@ -0,0 +1,88 @@
+#!/usr/bin/env bash
+#
+# PDF OCR Hotfolder — Update-Script
+#
+set -euo pipefail
+
+RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'; NC='\033[0m'
+log_info()  { echo -e "${GREEN}[INFO]${NC} $*"; }
+log_warn()  { echo -e "${YELLOW}[WARN]${NC} $*"; }
+log_error() { echo -e "${RED}[ERROR]${NC} $*"; }
+
+if [ "${EUID}" -ne 0 ]; then
+    log_error "Bitte als root ausführen: sudo ./update.sh"
+    exit 1
+fi
+
+INSTALL_DIR="/opt/pdf-ocr-hotfolder"
+SERVICE_NAME="pdf-ocr-hotfolder"
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+if [ -f "$SCRIPT_DIR/pdf_ocr_hotfolder/__init__.py" ]; then
+    REPO_DIR="$SCRIPT_DIR"
+elif [ -f "$INSTALL_DIR/.repo_path" ]; then
+    REPO_DIR="$(cat "$INSTALL_DIR/.repo_path")"
+    [ -d "$REPO_DIR" ] || { log_error "Gespeicherter Repo-Pfad existiert nicht: $REPO_DIR"; exit 1; }
+else
+    log_error "Repo nicht gefunden. update.sh aus dem Repo ausführen."
+    exit 1
+fi
+
+[ -d "$INSTALL_DIR" ] || { log_error "Installation nicht gefunden. Erst install.sh ausführen."; exit 1; }
+
+OLD_VERSION="$(cat "$INSTALL_DIR/VERSION" 2>/dev/null || echo unknown)"
+NEW_VERSION="$(cat "$REPO_DIR/VERSION" 2>/dev/null || echo unknown)"
+
+echo
+echo "=========================================="
+echo "  PDF OCR Hotfolder — Update"
+echo "=========================================="
+log_info "Repo:    $REPO_DIR"
+log_info "Install: $INSTALL_DIR"
+log_info "Version: $OLD_VERSION → $NEW_VERSION"
+echo
+
+# Service-User aus systemd-Unit lesen
+SERVICE_USER="$(awk -F= '/^User=/{print $2}' /etc/systemd/system/${SERVICE_NAME}.service 2>/dev/null || echo pdfocr)"
+SERVICE_GROUP="$(awk -F= '/^Group=/{print $2}' /etc/systemd/system/${SERVICE_NAME}.service 2>/dev/null || echo pdfocr)"
+
+log_info "Stoppe Service..."
+systemctl stop "${SERVICE_NAME}.service" 2>/dev/null || true
+
+log_info "Backup erstellen..."
+BACKUP_DIR="/var/backups/pdf-ocr-hotfolder"
+mkdir -p "$BACKUP_DIR"
+tar -czf "$BACKUP_DIR/backup-$(date +%Y%m%d-%H%M%S).tar.gz" \
+    -C "$INSTALL_DIR" --exclude=venv --exclude=__pycache__ . 2>/dev/null || true
+
+log_info "Code aktualisieren..."
+rm -rf "$INSTALL_DIR/pdf_ocr_hotfolder"
+cp -r "$REPO_DIR/pdf_ocr_hotfolder" "$INSTALL_DIR/"
+cp "$REPO_DIR/requirements.txt" "$INSTALL_DIR/"
+cp "$REPO_DIR/VERSION" "$INSTALL_DIR/"
+echo "$REPO_DIR" > "$INSTALL_DIR/.repo_path"
+
+log_info "Dependencies aktualisieren..."
+"$INSTALL_DIR/venv/bin/pip" install --upgrade pip -q
+"$INSTALL_DIR/venv/bin/pip" install --upgrade -r "$INSTALL_DIR/requirements.txt" -q
+
+log_info "systemd-Unit aktualisieren..."
+sed -e "s|__SERVICE_USER__|$SERVICE_USER|g" \
+    -e "s|__SERVICE_GROUP__|$SERVICE_GROUP|g" \
+    "$REPO_DIR/systemd/pdf-ocr-hotfolder.service" \
+    > "/etc/systemd/system/${SERVICE_NAME}.service"
+systemctl daemon-reload
+
+log_info "Berechtigungen setzen..."
+chown -R "$SERVICE_USER:$SERVICE_GROUP" "$INSTALL_DIR"
+
+log_info "Service starten..."
+systemctl start "${SERVICE_NAME}.service"
+sleep 2
+
+if systemctl is-active --quiet "${SERVICE_NAME}.service"; then
+    log_info "✅ Service läuft (Version $NEW_VERSION)"
+else
+    log_error "Service läuft nicht. journalctl -u $SERVICE_NAME -n 30"
+    exit 1
+fi