HAOS Add-on v1.1.1: Sparkline-Graphen (letzte 5 Minuten)

- SVG-Sparkline pro Sensor-Karte, farbkodiert nach device_class
- Backend: (timestamp, value) deque pro Sensor, API filtert auf 300s
- Kein Datenverlust bei Neustart (In-Memory, reicht für Trendanzeige)

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

haos-addon/src/main.py

@@ -4,6 +4,7 @@ import os
 import threading
 import time
 import uuid
+from collections import deque
 from typing import Any, Dict, List, Optional
 
 from flask import Flask, jsonify, request, send_from_directory
@@ -112,6 +113,12 @@ def _poll_loop(inv_cfg: Dict[str, Any], stop: threading.Event):
                 d["last_update"] = time.time()
                 d["modbus_ok"] = True
                 d["poll_count"] = d.get("poll_count", 0) + 1
+                # History: (timestamp, value) pro Sensor, maximal 5 Minuten
+                hist = d.setdefault("history", {})
+                now = time.time()
+                for sid, val in values.items():
+                    q = hist.setdefault(sid, deque(maxlen=300))
+                    q.append((now, val))
                 if _publisher:
                     _publisher.publish_data(values, prefix)
                     _publisher.publish_status("online", prefix)
@@ -209,10 +216,17 @@ def api_get_data():
             model_id = inv_cfg.get("inverter_model", "MIC_1500_TL_X")
             inverter = INVERTERS.get(model_id, INVERTERS["MIC_1500_TL_X"])
             d = State.inv_data.get(inv_id, {})
+            cutoff = time.time() - 300  # letzte 5 Minuten
+            raw_hist = d.get("history", {})
+            history = {
+                sid: [v for (t, v) in q if t >= cutoff]
+                for sid, q in raw_hist.items()
+            }
             result[inv_id] = {
                 "name": inv_cfg.get("name", inverter.name),
                 "inverter_name": inverter.name,
                 "values": d.get("values", {}),
+                "history": history,
                 "sensors": [
                     {"id": s.id, "name": s.name, "unit": s.unit,
                      "icon": s.icon, "device_class": s.device_class}