`ctx.timestamp` for views - to query for `last_updated`.

I'm trying to create a view which would list me the entires updated in the last 24h.

SELECT *
FROM your_table
WHERE last_updated >= NOW() - INTERVAL '24 HOURS';

Here's the rust code I tried:

use std::time::Duration;

use spacetimedb::{view, AnonymousViewContext, ViewContext, TimeDuration, Query};
use super::tables::{YourTable, your_table__view};
use crate::features::location::tables::your_table__query;


const DURATION_1H: u64 = 3_600;
const DURATION_24H: u64 = 24 * DURATION_1H;

/// Public view of the recently records in your_table.
///
/// Clients can subscribe directly to this view to receive updates on shared your_table entries.
#[view(accessor = recently_changed, public)]
pub fn recently_updated(ctx: &ViewContext) -> impl Query<YourTable> {
    const duration24h: TimeDuration = TimeDuration::from(Duration::from_secs(DURATION_24H));
    let last24h: u64 = ctx.timestamp - duration24h;
    ctx.from.your_table().r#where(|row| row.updated_at.gte(last24h))
}

However, ctx.timestamp is not defined. This is only available in a reducer.
But I don't want to modify any values, I just want to apply a filter.

Is the field ctx.timestamp missing a bug, or is this intended?
If so, how would this be best written in spacetimedb instead?

Start with crates/bindings/src/lib.rs around the reducer timestamp implementation, then compare the available ViewContext API with the reported recently_updated view. Determine whether view timestamps are intended to be supported and identify the supported filtering approach; done means the behavior and any required implementation or documentation are clearly established.