re-uploading work

packs/core/sensors/interval_timer_sensor.yaml

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+# Timer Sensor
+# Monitors time and fires all timer trigger types
+
+name: interval_timer_sensor
+ref: core.interval_timer_sensor
+description: "Built-in sensor that monitors time and fires timer triggers (interval, cron, and one-shot datetime)"
+enabled: true
+
+# Sensor runner type
+runner_type: standalone
+
+# Entry point for sensor execution
+entry_point: attune-core-timer-sensor
+
+# Trigger types this sensor monitors
+trigger_types:
+  - core.intervaltimer
+  - core.crontimer
+  - core.datetimetimer
+
+# Sensor configuration schema (standard JSON Schema format)
+parameters:
+  type: object
+  properties:
+    check_interval_seconds:
+      type: integer
+      description: "How often to check if triggers should fire (in seconds)"
+      default: 1
+      minimum: 1
+      maximum: 60
+  required: []
+
+# Poll interval (how often the sensor checks for events)
+poll_interval: 1
+
+# Tags for categorization
+tags:
+  - timer
+  - interval
+  - system
+  - builtin
+
+# Metadata
+meta:
+  builtin: true
+  system: true
+  description: |
+    The timer sensor is a built-in system sensor that monitors all timer-based
+    triggers and fires events according to their schedules. It supports three
+    timer types:
+
+    1. Interval timers: Fire at regular intervals (seconds, minutes, hours, days)
+    2. Cron timers: Fire based on cron schedule expressions (e.g., "0 0 * * * *")
+    3. DateTime timers: Fire once at a specific date and time (one-shot)
+
+    This sensor uses tokio-cron-scheduler for efficient async scheduling and
+    runs continuously as part of the Attune sensor service.
+
+# Documentation
+examples:
+  - description: "Interval timer - fires every 10 seconds"
+    trigger_type: core.intervaltimer
+    trigger_config:
+      unit: "seconds"
+      interval: 10
+
+  - description: "Interval timer - fire every 5 minutes"
+    trigger_type: core.intervaltimer
+    trigger_config:
+      unit: "minutes"
+      interval: 5
+
+  - description: "Cron timer - fire every hour on the hour"
+    trigger_type: core.crontimer
+    trigger_config:
+      expression: "0 0 * * * *"
+
+  - description: "Cron timer - fire every weekday at 9 AM"
+    trigger_type: core.crontimer
+    trigger_config:
+      expression: "0 0 9 * * 1-5"
+      timezone: "UTC"
+
+  - description: "DateTime timer - fire once at specific time"
+    trigger_type: core.datetimetimer
+    trigger_config:
+      fire_at: "2024-12-31T23:59:59Z"
+      timezone: "UTC"