HA improvements: entity overflow fix, live % fetch on device page, searchable entity dropdown

app.py

@@ -1,4 +1,4 @@
-from flask import Flask, render_template, redirect, url_for, request, flash, abort, send_from_directory
+from flask import Flask, render_template, redirect, url_for, request, flash, abort, send_from_directory, jsonify
 from sqlalchemy import create_engine, func
 from sqlalchemy.orm import scoped_session, sessionmaker
 
@@ -547,6 +547,12 @@ def create_app(config_object="config"):
     # Devices — list
     # ------------------------------------------------------------------ #
 
+    @app.route("/ha/entities")
+    def ha_entities():
+        if not ha_client.enabled:
+            return jsonify([])
+        return jsonify(ha_client.list_battery_entities())
+
     @app.route("/device/")
     def device_list():
         devices = db.query(Device).order_by(Device.name).all()
@@ -614,10 +620,28 @@ def create_app(config_object="config"):
             .filter_by(status="available")
             .order_by(Battery.label).all())
         device_types = sorted({d.device_type for d in db.query(Device).all() if d.device_type})
+        ha_live_pct = None
+        if ha_client.enabled and device.ha_entity_id:
+            ha_live_pct = ha_client.get_state(device.ha_entity_id, timeout=4)
+            if ha_live_pct is not None:
+                changed = False
+                for battery in device.batteries:
+                    if battery.status == "installed" and battery.battery_percentage != ha_live_pct:
+                        battery.battery_percentage = ha_live_pct
+                        db.add(BatteryPctLog(
+                            battery_id=battery.id,
+                            percentage=ha_live_pct,
+                            recorded_at=datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S"),
+                            source="poll",
+                        ))
+                        changed = True
+                if changed:
+                    db.commit()
         return render_template("device_detail.html", device=device, brands=brands,
                                available_batteries=available_batteries,
                                device_types=device_types,
-                               ha_enabled=ha_client.enabled)
+                               ha_enabled=ha_client.enabled,
+                               ha_live_pct=ha_live_pct)
 
     # ------------------------------------------------------------------ #
     # Devices — edit