Draft: Dsl platform improvements

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array.range:

Creates an array with a specified size.

Useful for repeating something N times, or creating N items efficiently without funny business (e.g. recursive/self-triggering actions)

Examples:

- static: 5
- array.range: { root } # accepts a range from a remapper
# [0, 1, 2, 3, 4]

array.range: 3 # or a numeric literal as a range
# [0, 1, 2]

focus:

Changes the root in the context of remappers inside its do property.

Example:

# Get all customers, and for each customer, find the orders belonging to that customer.
# Assumes that `history: 0` is an array of all customers,
# and `history: 1` is an array of all orders.
- history: 0
- array.map:
    focus:
      on:
        object.from:
          currentCustomer:
            array: item
          allOrders:
            history: 1
      do:
        object.from:
          id:
            prop: id
          name:
            prop: name
          associatedOrders:
            - root: null
            - prop: allOrders
            -
              array.filter:
                equals:
                  - prop: customerId
                  -
                    - root: null
                    - prop: currentCustomer
                    - prop: id

date.startOf / date.endOf:

Returns the start or end of a specified time unit for a given date. Operates in UTC.

Supported units:

• year - First/last moment of the year
• quarter - First/last moment of the quarter
• month - First/last moment of the month
• week - First/last moment of the week (Monday start)
• weekSun - First/last moment of the week (Sunday start)

Examples:

# Start of month
- static: "2025-11-21T12:00:00.000Z"
- date.startOf: month
# "2025-11-01T00:00:00.000Z"

# End of quarter
- static: "2025-11-21T12:00:00.000Z"
- date.endOf: quarter
# "2025-12-31T23:59:59.999Z"

# Start of week (Monday)
- static: "2025-11-21T12:00:00.000Z"
- date.startOf: week
# "2025-11-17T00:00:00.000Z"