Initial Homepage dashboard configuration

Services, widgets, layout and settings for the homelab dashboard.
Secrets are externalized via {{HOMEPAGE_VAR_*}} placeholders and
supplied through a local .env file (not committed).

widgets.yaml

@@ -0,0 +1,20 @@
+---
+# For configuration options and examples, please see:
+# https://gethomepage.dev/configs/info-widgets/
+
+- resources:
+    cpu: true
+    memory: true
+    disk: /
+
+- openmeteo:
+    label: Düsseldorf
+    latitude: 51.2115
+    longitude: 6.7474
+    timezone: Europe/Berlin
+    units: metric
+    cache: 5
+
+- search:
+    provider: duckduckgo
+    target: _blank