Add 8 new tools: Hash Verifier, URL Tool, String Utils, Cron Explainer, IP Calc, Lorem Ipsum, CSV Viewer, Notes

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

backend/tools/csvviewer.py

@@ -0,0 +1,50 @@
+from flask import Blueprint, request, jsonify
+import csv
+import io
+from util.logger import logger
+from auth.token import verify_token
+
+csv_blueprint = Blueprint('csv_tool', __name__)
+
+MAX_ROWS = 500
+
+
+@csv_blueprint.route('/api/csv/parse', methods=['POST'])
+def parse_csv():
+    user = verify_token()
+    if not user:
+        return jsonify({"message": "Nicht autorisiert"}), 401
+    try:
+        data = request.get_json() or {}
+        text = data.get("text", "")
+        delimiter = data.get("delimiter", ",")
+
+        # Handle escaped tab
+        if delimiter == "\\t" or delimiter == "\t":
+            delimiter = "\t"
+        if not delimiter:
+            delimiter = ","
+
+        reader = csv.reader(io.StringIO(text), delimiter=delimiter)
+        all_rows = list(reader)
+
+        if not all_rows:
+            return jsonify({"headers": [], "rows": [], "total_rows": 0, "truncated": False})
+
+        headers = all_rows[0]
+        data_rows = all_rows[1:]
+        total_rows = len(data_rows)
+        truncated = total_rows > MAX_ROWS
+
+        return jsonify({
+            "headers": headers,
+            "rows": data_rows[:MAX_ROWS],
+            "total_rows": total_rows,
+            "truncated": truncated,
+        })
+
+    except csv.Error as e:
+        return jsonify({"message": f"Ungültiges CSV: {e}"}), 400
+    except Exception as e:
+        logger.error(f"Fehler csvviewer: {e}")
+        return jsonify({"message": "Fehler beim Verarbeiten des CSV"}), 500