Add HACS integration, 8 Lovelace cards, and pairing page

New HA integration (integration/custom_components/luma_home/) with:
- WS API: luma/get_config (Lovelace→v2 bridge), luma/pair, luma/pair_status
- Config flow with dashboard URL path setting

8 HACS frontend cards (cards/) matching TV app visual spec:
- toggle, range, climate, media, curtain, action, vacuum, weather
- Glass card design: rgba(36,40,48,0.75) bg, 22px radius, accent glows

Pairing page (pairing/luma-pair.html) for TV token provisioning.
Web dashboard (web-dashboard/) — legacy config editor (deprecated).

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

integration/custom_components/luma_home/strings.json

@@ -0,0 +1,25 @@
+{
+  "config": {
+    "step": {
+      "user": {
+        "title": "Luma Home Setup",
+        "description": "Configure the dashboard that drives the Luma TV app.",
+        "data": {
+          "dashboard_url_path": "Dashboard URL path"
+        }
+      }
+    },
+    "abort": {
+      "single_instance_allowed": "Luma Home is already configured."
+    }
+  },
+  "options": {
+    "step": {
+      "init": {
+        "data": {
+          "dashboard_url_path": "Dashboard URL path"
+        }
+      }
+    }
+  }
+}