Add data-driven blueprint architecture for adaptive lighting modes

Implement three core blueprints using convention-based entity lookup:
- apply_lighting_mode: Dynamic mode application with behavior polymorphism
- weekend_mode_schedule: Auto-enable/disable based on day of week
- weekend_mode_apply_settings: Apply AL adjustments for weekends

Blueprints use convention over configuration, allowing unlimited custom
modes without code changes. Modes discovered via naming pattern:
input_text.adaptive_lighting_settings_{{mode}}

blueprints/automation/weekend_mode_apply_settings.yaml

@@ -0,0 +1,85 @@
+blueprint:
+  name: Weekend Mode Apply Settings
+  description: Adjust AL settings when weekend mode toggles
+  domain: automation
+
+input:
+  weekend_mode_boolean:
+    name: Weekend Mode Boolean
+    description: Toggle helper for weekend mode
+    selector:
+      entity:
+        domain: input_boolean
+
+  adaptive_lighting_switch:
+    name: Adaptive Lighting Switch
+    description: AL switch to adjust
+    selector:
+      entity:
+        domain: switch
+        integration: adaptive_lighting
+
+  sunrise_time:
+    name: Weekend Sunrise Time
+    description: Delayed sunrise time for weekends
+    default: "10:00:00"
+    selector:
+      time:
+
+  sunset_time:
+    name: Weekend Sunset Time
+    description: Extended sunset time for weekends
+    default: "01:00:00"
+    selector:
+      time:
+
+  max_brightness:
+    name: Weekend Max Brightness
+    description: Reduced max brightness for weekends
+    default: 60
+    selector:
+      number:
+        min: 1
+        max: 100
+        step: 1
+        unit_of_measurement: "%"
+
+mode: restart
+max_exceeded: silent
+
+trigger:
+  - platform: state
+    entity_id: !input weekend_mode_boolean
+  - platform: homeassistant
+    event: start
+
+variables:
+  weekend_boolean: !input weekend_mode_boolean
+  al_switch: !input adaptive_lighting_switch
+  sunrise_time: !input sunrise_time
+  sunset_time: !input sunset_time
+  max_brightness: !input max_brightness
+  weekend_active: "{{ is_state(weekend_boolean, 'on') }}"
+
+action:
+  - choose:
+      # Weekend mode ON - Apply adjustments
+      - conditions: "{{ weekend_active }}"
+        sequence:
+          - service: adaptive_lighting.change_switch_settings
+            target:
+              entity_id: "{{ al_switch }}"
+            data:
+              sunrise_time: "{{ sunrise_time }}"
+              sunset_time: "{{ sunset_time }}"
+              max_brightness: "{{ max_brightness }}"
+              use_defaults: current
+
+      # Weekend mode OFF - Reset to defaults
+      - conditions: "{{ not weekend_active }}"
+        sequence:
+          - service: adaptive_lighting.change_switch_settings
+            target:
+              entity_id: "{{ al_switch }}"
+            data:
+              use_defaults: configuration