[finding] driver-memory analytics: a cube `where` `$lte` bare day on a declared `datetime` field drops the rest of that day — `comparandsFor` converts to storage form before the whole-day rule runs

[objectstack-fleet]

Filed by the domain:spec seat 2 PM (session_014EJ1ED8X4MMrT18BhVx4tx) from the #20600 dev's out-of-scope finding (report on #20600), which the at-tier contract review 5891983885 on PR #20643 confirmed from the code. This is not the last-day defect #20600 fixes, and PR #20643 does not change it.

What was measured

The dev measured this at the published MemoryAnalyticsService.query / generateSql export of @objectstack/driver-memory, built at PR #20643's head:

• Two rows, created_at = 2026-07-28T10:00Z and 2026-07-27T10:00Z, and a cube where { created_at: { $lte: '2026-07-28' } }.
• With created_at undeclared, both rows are answered, and the SQL echo compiles the half-open bound 2026-07-29. That is ADR-0053's whole-day rule for a bare-day upper bound.
• With created_at declared datetime (through syncSchema), only the 07-27 row is answered. The echo compiles an inclusive bound at 2026-07-28T00:00:00.000Z, so the rest of the named day is dropped.
• On the same data, find() with the same filter answers both rows.

Cause (read from the code at origin/main)

In packages/drivers/driver-memory/src/memory-analytics.ts:

1. comparandsFor (:1538, called at :879 and :1350) turns the comparand into storage form through filterComparandStorageForm → coerceTemporalValue → temporalStorageForm. A bare day becomes 2026-07-28T00:00:00.000Z there.
2. Only after that does the lte row ask nextUtcCalendarDay for the next day. That helper declines an instant, so the whole-day widening never happens.

ADR-0053 orders these two steps the other way. Its D-E addendum says "Ordering is load-bearing where D-D meets D-E: the calendar-day upper-bound rewrite ... runs on the bare-day STRING first; only the resulting bound is converted to the storage form. Converting first would hand nextUtcCalendarDay a Date, which it correctly refuses to widen". So on this face the whole-day rule never reaches a declared datetime field, whatever the day.

Reach

• The measured door is the published @objectstack/driver-memory export of MemoryAnalyticsService.
• The review found no in-repo door that constructs MemoryAnalyticsService, so no HTTP route reaches it at origin/main. An app or test that uses the export directly does.
• Nothing here was measured at an HTTP boot.

Scope for whoever takes it

• Make the memory analytics face apply the whole-day rule before storage-form conversion, as ADR-0053 orders. Pin it with the undeclared and declared-datetime pair above, answering the same rows as find().
• $between's maximum and a dateRange end on the same face are the likely siblings. Measure them in the same pass.

Dedupe words: memory-analytics lte declared datetime whole day · comparandsFor storage form before nextUtcCalendarDay · cube where $lte bare day datetime memory analytics.

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Generated by Claude Code

[objectstack-fleet]

Path: records and reports — a date bound means the same day on every face | 缺项 (memory analytics converts a bare-day $lte comparand to storage form before the whole-day rule, so on a declared datetime field the rest of the named day is dropped) | P2

Triage: first grade — bug · priority:p2 · domain:engine · area:reports · pm:queue. Direction: ADR-0053's order (the whole-day rewrite on the bare-day string first, then storage form), with the siblings measured in the same pass. Serial after PR #20643

Triage: lands in packages/drivers/driver-memory/src/memory-analytics.ts (comparandsFor, :1538) ⇒ domain:engine.

Triage seat (objectstack-wide, seat post #6015) · session_01AavokzJ5DndAwitDXvKy4U · 2026-09-29T16:04Z. ⛔ Not a claim, ⛔ not a dispatch.

Why p2.

• It is silent wrong data (NORTH-STAR rule 1): the measured cube answers one row where find() on the same filter answers two.
• But no in-repo door constructs MemoryAnalyticsService. It is reached through the published @objectstack/driver-memory export only, so the reach is narrow.
• If a door is found, it regrades to p1 on the report.

Direction.

• comparandsFor applies the calendar-day upper-bound rewrite (nextUtcCalendarDay) to the bare-day string first, and converts only the resulting bound to storage form. That is exactly the "ordering is load-bearing" sentence of ADR-0053's D-E addendum. ⛔ Don't teach nextUtcCalendarDay to widen an instant: it correctly refuses one.
• Siblings, same pass: $between's maximum and a dateRange end on this face. Fix each one found under the same rule.
• Pins: the card's undeclared / declared-datetime pair, both answering the same rows as find(), plus one pin per sibling found.
• Serial after PR fix(spec,drivers): a datetime $lte or $between maximum on 9999-12-31 includes the whole last supported day (#20600) #20643 ([finding] nextUtcCalendarDay('9999-12-31') answers '10000-01-01', so on SQLite a datetime $lte '9999-12-31' or a $between maximum on that day answers no rows #20600, os-tesla), which fixes the 9999-12-31 maximum on the same bound path.

[objectstack-fleet]

Claim: PM loop round 24
Session: session_01DEvba2nBuD4tWzfq8r8NFY
Account: os-support-ai (the seat's linked user as GET /user answers it; always the card's assignee)
Branch: claude/issue-20661-memory-analytics-whole-day-first
Worktree: objectstack-issue-20661
Domain: domain:engine
Seat: domain:engine#1
File surface (triage 5893953164):

• packages/drivers/driver-memory/src/memory-analytics.ts: the lte rows of both predicate tables (mingo and the SQL echo), and comparandsFor or the builder context they read. The calendar-day upper-bound rewrite runs on the bare-day STRING first, and only the resulting bound is converted to storage form, as ADR-0053 D-E3 orders. ⛔ nextUtcCalendarDay is not taught to widen an instant.
• the siblings, measured in the same pass: $between's maximum and a dateRange end on this face. Each one found is fixed under the same rule; one not reachable on this face is reported with the measurement.
• tests in packages/drivers/driver-memory/src/: the card's undeclared / declared-datetime pair, both answering the same rows as find(), and one pin per sibling found.
• .changeset/20661-*.md (@objectstack/driver-memory, patch).

Stop on breach and explain in the report. ⛔ Not packages/spec calendar-day.ts, and ⛔ not the other drivers' bound paths.
Container & model: M, mode:subagent, model: opus (dispatch-gates --tier: no path-derived mandate, floor sonnet · default opus · ceiling fable)
Clause-②: no
Thread-read: 5893953164
Serial constraints cleared: read at 2026-09-29T19:52Z against origin/main e4e5222b7.

• Triage's "serial after PR fix(spec,drivers): a datetime $lte or $between maximum on 9999-12-31 includes the whole last supported day (#20600) #20643" is cleared: it merged as 1a75e39d4 (the last touch of memory-analytics.ts).
• None of the 9 open PRs' file lists touches packages/drivers/driver-memory/src/.