Write a dated digest — a prose synthesis of what the vault took in and how it changed over a window: what you learned, not a changelog.

Resolve the vault per references/vault.md, then read its AGENTS.md and run this in the vault's own terms.

Window

Take the window from the argument — day, week, or month. Empty → ask which. Resolve it to a concrete date range from today.

Synthesize

Select what falls in the window: read the log — the audit trail is the time index — for entries in range, then pull the summary layer entries filed and the evergreen pages touched over it.
Write one dated synthesis into the digest layer, grouped by the vault's domain tags and cross-linked to the pages it covers. Prose that says what the window added up to — the throughline, the connections, what changed your mind — not a list of titles.

Done when the window's captures and changes are synthesized into one dated digest, every claim linked to the page behind it.