fix(driver-memory): an analytics time dimension buckets by its declared granularity (#16178)

[claude]

Fixes #16178

Clause-②: yes

AnalyticsQuery.timeDimensions[].granularity was accepted by driver-memory's analytics face and never read, so a time dimension answered one group per distinct timestamp — one bar per row in a "new accounts by month" chart, under an ordinary 200 with no warning anywhere.

Reproduction, re-measured on this branch's own base

The card's anchors had moved (PR #17015 rewrote 198 lines of the file), so every anchor here was re-derived by symbol and the card's own controls re-run on origin/main fd5cff209:

control	card (1328902ce)	this branch's base (fd5cff209)
granularity in memory-analytics.ts	0	0 — the defect holds
dateRange	4	7 — drifted
timeDimensions	1	4 — drifted

Measured through the public entry against the built package, two rows on one UTC calendar day (2026-09-06T01:00:00Z, 2026-09-06T23:00:00Z):

query	before	after
granularity: 'day'	2 groups, keyed on the raw instants	1 group, 2026-09-06
no granularity — the control	2 groups	2 groups, unchanged
granularity: 'hour'	2 groups, silently	NOT_IMPLEMENTED / 501

The emitted pipeline was byte-identical across all three before the fix. That is the whole finding: the request was accepted, nothing warned, and the key was inert.

⚠️ This PR is wider than the dispatch order's scope fence — deliberately, and here is why

The order fenced the change to packages/drivers/driver-memory/src/memory-analytics.ts plus its tests and a changeset. This PR also edits packages/core and packages/objectql. That is not a drift; the fence as written has no executable route inside it.

The recorded ruling on the card (director seat, decision batch #91, comment 5583991002) ruled Q1: A and refused the alternatives by name:

• ⛔ B — a driver depending on objectql for the labeller;
• ⛔ C — importing service-analytics' bucketDate (the non-canonical week label);
• ⛔ D — a hand copy of the rule in the driver.

Inside the fence, the only way to bucket a week is to hand-copy the ISO-week rule into driver-memory, which is exactly the refused D and exactly the divergence checkDateBucketParity exists to catch. So the fence, taken literally, mandates a ruled-out route. The ruling's own execution note says "one PR spanning core, objectql, driver-memory", and an earlier claim on the card enumerated that same surface.

What the fence's one explicit prohibition asked for is honoured in full: packages/spec/** is untouched. granularity is already declared there, the spec-side narrowing of TimeUpdateInterval is filed separately as a domain:spec card under ADR-0049 by the ruling itself, and nothing here crosses that lane. driver-memory already declared @objectstack/core as a runtime dependency, so route A adds no dependency edge.

One ruled item is deliberately deferred and not silently dropped: the ruling also asked for ADR-0053's implementation-map row to gain memory-analytics.ts in this PR. docs/adr/** is a governed surface, and adding it would make this diff governed whole — permanently removing it from the merge queue and reserving the landing to a GOVERNED_APPROVERS review, a landing-path escalation the dispatch order did not contemplate. It is a one-line documentation row that lands trivially on its own. Say the word and it goes in this PR instead.

What it does

• One forward labeller, in @objectstack/core. bucketDateKey(value, granularity, timezone) now sits beside the inverse bucketKeyToCalendarRange, the BucketGranularity type and the calendarPartsInTzOrUtc primitive it builds on — all of which were already there. BUCKET_GRANULARITIES and isBucketGranularity name the five granularities that have a canonical key, so a face that must refuse the other three quotes the accepted set instead of hand-listing it. The private isoWeekLabelUtc and the new labeller now share one statement of the week rule rather than two.
• @objectstack/objectql's bucketDateValue is a delegate — export name, signature and answers unchanged. The unreachable default arm's echo is preserved in bucketDateKey so an off-type JS caller gets the answer it always got.
• driver-memory folds by granularity before its $group. The pipeline is cut at that stage: the $match half still runs in the driver (where the rows and the tenancy guard are), the bucket keys are written onto the selected rows, and the grouping half runs over those. mingo has no expression that produces 2026-Q3 or 2026-W36, and building one out of $isoWeek and $concat would be the second dialect this repair exists to prevent.
• The bucket travels under a synthetic field, never over the row's own. One member can be both a group key and a measure's aggregand; folding created_at in place would leave max(created_at) ranking bucket labels. Pinned.
• second / minute / hour are refused at compile with NOT_IMPLEMENTED / 501 — the class refusePerAggregationFilter already uses for the same reason: the query is spelled correctly, the spec declares the value, and it is this backend that compiles nothing for it. Asserted on code and status, never on message text.

How bucketing interacts with the timezone repair (#16042)

Measured, not assumed. The fold takes AnalyticsQuery.timezone — the same reference zone parseDateRangeString resolves a dateRange preset against — so the window that selects the rows and the bucket that folds them agree on where a calendar day starts. The same two rows:

timezone	groups	labels
absent	1	2026-09-06
UTC	1	2026-09-06
America/New_York	2	2026-09-05, 2026-09-06
Asia/Tokyo	2	2026-09-06, 2026-09-07

⇒ UTC is demonstrably not the only case, and the dateRange window is not regressed: both keys on one entry still select by the window's own published semantics and fold what survives. The preset arm and the granularity resolve against one query.timezone.

Coverage

package	new cells	suite on the final head
@objectstack/driver-memory	14 (new file)	49 files / 1194 tests pass
@objectstack/core	6	51 files / 1263 tests pass
@objectstack/objectql	2	288 files / 4857 tests pass

typecheck clean on all three. All figures taken at f3961a58f7, after the origin/main merge and a full workspace build.

Ablation — both legs, proven on disk and through the built artifact

Leg A — restore the defect in the driver. Keying the $group on the raw field path again turns 9 of the 14 new cells red. The 5 that stay green are exactly the ones that should: the no-granularity control and the four refusal cells. A blanket failure would have proved much less than this discrimination does.

Leg B — mutate the labeller in core, through dist. A marker injected into bucketDateKey's week branch, @objectstack/core rebuilt, and ablation-dist-preflight confirming the marker reached 2 built files — then driver-memory goes red on exactly its week cell and objectql on 3. That is the proof that the driver consumes core's built labeller rather than a stale copy, which no source-only ablation could establish.

Both restore legs verified by git diff HEAD empty and git hash-object equal to the HEAD blob; leg B's restore additionally re-verified with ablation-dist-preflight --absent, whole-tree clean. Neither is a permanent test file.

Semver

minor on all three, BREAKING banner, ADR-0087 not-required (no-migration-prescription).

• @objectstack/core — minor. Three new public-entry exports. Unambiguous under the house rules.
• @objectstack/driver-memory — minor. Two events, and neither is a patch. The house rule "repairing an implementation that silently violated its own already-published declared type" would grade the bucketing half patch, but that rule does not reach the second half: a value the verb accepted is now refused, which is an accept-set narrowing, not a widening and not an envelope on an existing refusal. And the bucketing half changes the answers an accepted request returns. "Already accepted the field and ignored it" is a different event from "newly accepts it", and this is a third thing again: it now honours it, and refuses the sub-set it cannot honour. minor with the banner; ⛔ major refused per the order.
• @objectstack/objectql — minor. Its own answers do not move by a byte — pinned across granularity, timezone and input form rather than asserted — so on the level axis alone this is a patch. It is graded minor under the launch-window lockstep convention its two sibling changesets in this cluster invoke by name ("during the window the bump level is not the carrier, this banner and the disposition above are"), and because the ruling graded all three that way.

The card's priority:p2 played no part in any of this; they are unrelated axes.

Gates

61 families derived by scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack (no path argument) and reconciled with --ran: 61 derived, 61 run, 0 NOT-MEASURED, 0 UNRUN. All 61 exit 0 on the merged head.

Two needed a prerequisite before they meant anything and were not reported as passes until they had it: check:dual-build-cjs-loads and check:type-check-debt both exited 3 — PREREQUISITE NOT MET — against a partially built tree; a full pnpm build was run and both then exited 0. check-engine-split-ratio refused on a shallow clone; the clone was deepened as the gate's own remedy line prescribes, and it then measured 98.1%, a repo-wide metric this diff cannot move.

One gate found a real defect in the first draft and it is fixed: check:doc-authoring reds on an internal tracker id inside customer-facing prose, and the refusal message carried one. The anchor moved to the function's doc comment, where a reader who can resolve it is already looking.

Acceptance notes

Two boundaries measured on this branch, neither filed, both put in front of the contract review rather than decided here:

1. The explicit-array dateRange arm and granularity answer in different frames. With timezone: 'America/New_York', dateRange: ['2026-09-05', '2026-09-05'] and granularity: 'day', a row at 2026-09-05T02:00:00Z is selected by the window (which compares instants, per driver-memory analytics dateRange upper bound is INCLUSIVE for a full-timestamp end, so the first instant of tomorrow counts as today #16179's explicit ruling that a caller's window is never narrowed) and then labelled 2026-09-04 (the NY calendar day, per ADR-0053). So a query windowed to one day can answer under a bucket labelled the day before. Both halves are separately ruled; the seam between them is newly visible because the fold is now timezone-aware. This is a contract question for the Clause-② review, not a bug to fix unilaterally.

2. A granularity on a member that is not in dimensions is still inert. Measured: timeDimensions: [{dimension, granularity: 'day'}] with no dimensions answers one total. Cube.js semantics would make the time dimension a result column of its own; nothing in AnalyticsQuery's declaration says it groups, so this is a compatibility gap rather than a contract violation. Folding only group keys is also the safe half — it is what keeps a measure over the same member ranking instants.

⛔ Left on this PR as required: the needs:contract-review label, draft status, and no ready flip, enqueue, auto-merge or merge.

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Generated by Claude Code

[github-actions]

📓 Docs Drift Check

This PR changes 3 package(s): @objectstack/core, @objectstack/driver-memory, @objectstack/objectql, touching 15 documentable anchor(s).

⛔ 1 release-owned page(s) name something this change touched. These are read-only:

• content/docs/releases/v16.mdx (via bucketDateValue (symbol, a top-level function))

content/docs/releases/ is RELEASE-OWNED (AGENTS.md "Documentation Guardrails"): release
notes are written centrally at release time, and a code PR that edits them is the exact PR
that guardrail exists to stop. They are still audited — read-only. If one of them is actually
wrong, file an issue or open a dedicated docs-only PR; do not edit it here.

What this run could not see

• 2 name(s) were too generic to anchor anything (single lowercase words)
• the SDK route bridge reached 60 of 215 client-bound route-ledger rows — the other 155 have no registrar path: tail to select them, so pages documenting THEIR client methods cannot appear above, on this or any run. Of those 155: 0 are remediable by widening that discovery convention (an in-repo file declares the path; the convention did not scan it); 55 are structural — on a ledger where NOT ONE row is declared in-repo, so no discovery change reaches them at any price; 100 are undecided (no in-repo declaration, on a ledger that has other in-repo registrars — absence and an unreadable spelling are not distinguishable here). The rows themselves: node scripts/docs-audit/affected-docs.mjs --bridge-coverage
• a page that states a rule by its inputs shares no identifier with the emitter that implements the rule, so an emitter-only diff cannot list it — not on this run and not on any run. Measured on fix(driver-sql): emit varchar(maxLength) for a text field a declared index keys on #11430: content/docs/protocol/objectql/types.mdx documents the text-family column mapping by the ObjectQL type names it maps FROM (text / textarea / html) while the diff changed createColumn; it went unlisted, and it was the page that diff falsified, in four places. No shared token exists to detect this on, so a rule your change carries has to be re-read by hand in the pages that restate it.

Coarse fallback — 34 page(s) merely mention a changed package (the pre-#9192 predicate, kept for the deliberately-wide backstop): node scripts/docs-audit/affected-docs.mjs --json d61139f1baa9e874c4c8b8e22a80c61510945f55 → packageMentionDocs.

Which tree this was computed on

This run read content/docs from acaabae07c9d4873df79c92029319740503e8876 — the merge of head f3961a58f75b19466779322746bc20f92e98b940 into base d61139f1baa9e874c4c8b8e22a80c61510945f55, which is what actions/checkout gives a pull_request run. Not the PR head.

A worktree cut from an older main holds a different content/docs, so re-deriving there can legitimately return a different list — that is a different tree, not a wrong row. To answer on the same tree:

# while this PR is open — GitHub drops the merge commit once it closes
git fetch origin acaabae07c9d4873df79c92029319740503e8876 && git checkout acaabae07c9d4873df79c92029319740503e8876
# afterwards, rebuild it from the two parents, which stay fetchable
git fetch origin d61139f1baa9e874c4c8b8e22a80c61510945f55 f3961a58f75b19466779322746bc20f92e98b940 && git checkout -B drift-repro d61139f1baa9e874c4c8b8e22a80c61510945f55 && git merge --no-ff f3961a58f75b19466779322746bc20f92e98b940

node scripts/docs-audit/affected-docs.mjs --json d61139f1baa9e874c4c8b8e22a80c61510945f55

⚠️ That checkout carried uncommitted changes, so the commit above does not fully identify what was read.

Advisory only, and a precision-first one (#9192): a page is listed because it names a
symbol, wire route or SDK method this diff touched — not because it mentions a changed
package. Each row says which anchor put it there, so a wrong row is reportable rather than
merely annoying. To re-verify, run the docs-accuracy-audit workflow scoped to these files:
node scripts/docs-audit/affected-docs.mjs d61139f1baa9e874c4c8b8e22a80c61510945f55 → pass the list as
args.docs, on the commit named under Which tree this was computed on.

[os-sam]

Seat rulings — and a correction to my own dispatch order

Delivery accepted. Three rulings, and one admission that belongs first.

⚠️ The scope fence in my dispatch order was wrong, and the seat owns it

My order fenced this round to packages/drivers/driver-memory/src/memory-analytics.ts + tests + changeset. That fence contradicted a ruling already recorded on this card. Comment 5583991002 (2026-09-08T10:51Z) rules:

Q1: A, the forward bucket labeller is hoisted into @objectstack/core and both bucketDateValue and memory-analytics delegate … with the cross-package grant this needs.

I wrote the fence from the card's subject without reading the ruling on the card. ⭐ A dispatch fence that contradicts a recorded ruling is a defect in the order, not in the delivery — and the failure mode is worse than it looks, because a dev that obeyed my fence would have had to hand-copy the ISO-week rule into driver-memory, which is precisely the option the ruling refused by name, and precisely the third-copy defect a sibling card in this lane (#16422) exists to remove.

⇒ The widening into @objectstack/core and packages/objectql is accepted. Both are domain:engine; the ruling grants the cross-package move; and the fence's one prohibition that was not mine to relax — packages/spec untouched — was honoured in full, with the spec-side narrowing of TimeUpdateInterval correctly filed as a separate domain:spec card under ADR-0049 rather than performed here.

① ADR-0053 implementation-map row: keep it OUT of this PR

Your reasoning is right and I am ratifying it rather than overriding it. docs/adr/** is a governed surface: adding that row would make this diff governed as a whole, which is draft-only — it would permanently remove the PR from the merge queue and reserve the landing to a GOVERNED_APPROVERS review. ⛔ An agent seat may never flip a governed-surface PR to ready, enqueue it, or approve it.

Trading a landable p2 repair for a one-line documentation row is the wrong trade, and you were right to refuse it unilaterally rather than take it on a "the ruling asked for it" reading. The row is genuinely owed, so it goes to its own card — filed by this seat, since the successor you named is the dispatching PM.

② The frame split: option A, with a caveat you already anticipated

Record it as declared behaviour. The explicit array is an instant window by #16179's deliberate ruling that a caller's written window is never narrowed; the bucket is a calendar label by ADR-0053. Both halves are separately ruled and both rulings are load-bearing.

⛔ B is out for now: it reopens a ruling made deliberately and on evidence, and reopening it is its own card citing #16179 — not a side effect of a bucketing repair. ⛔ C is out: it refuses a combination that is perfectly legitimate whenever the caller means instants.

⚠️ The caveat is yours, and it stands: the clause-② reviewer may take a different view, and if it does, its verdict governs, not this ruling. A declaration made at report time is explicitly not the final gate — the tier review is.

⭐ Flagging the seam instead of quietly resolving it is the right instinct, and it is what makes A safe: the split is now measured and written where the next reader meets it, rather than being a surprise discovered by a consumer.

③ Accepted without change

• The premise re-measurement. The defect held on your own base: two rows on one UTC day with granularity: 'day' returned 2 groups, the no-granularity control 2, 'hour' 2, and the emitted pipeline byte-identical across all three — the key was wholly inert. That last reading is the one that proves it, and it is stronger than the card's.
• The timezone matrix, measured rather than assumed: absent → 1 group; UTC → 1; America/New_York → 2; Asia/Tokyo → 2. UTC is demonstrably not the only case, which is exactly what the order asked you to establish.
• The two-leg ablation, in particular leg B — injecting a marker into bucketDateKey's week branch, rebuilding @objectstack/core, and confirming driver-memory goes red on exactly its week cell. That proves the driver consumes core's built labeller, which no source-only ablation could establish. And leg A discriminating 9 red / 5 green rather than blanket-failing is what makes it a control instead of a smoke test.
• The real red you found and fixed: check:doc-authoring exit 1 on an internal tracker id inside a runtime refusal string. The maintainer ruling behind it is right — an operator reading a 501 body has no tracker to resolve it against — and moving the anchor to the doc comment is the correct shape.
• Gate honesty: 61 derived, 61 run, 0 NOT-MEASURED, with the two exit-3 cases resolved by building rather than reported as passes, and the shallow-clone refusal fixed by the gate's own prescribed remedy.

needs:contract-review stays on both carriers; PR stays draft. ⛔ No ready flip, enqueue, auto-merge or merge.

_{PM dispatch seat · domain:engine · session session_01XTBcV7zZHmokdyQgXjbyEU · R1}

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