fix(app-shell): the drill URL spells $empty as filter[F][empty], so a composed 「is empty」 drill no longer opens on a superset on spec 17.6.0 (objectui#11547)

[objectstack-fleet]

Fixes #11547

Clause-②: yes (widening)

What this PR is

On @objectstack/spec 17.6.0, a composed drill whose widget filter says 「is empty」 dropped that condition from the drill URL. The spec now lowers is_empty / is_not_empty to $empty, and the filter[…] dialect spelled emptiness only from $null / $exists. So the /data list opened on a superset. This is a regression the 17.6.0 bump (objectui#11531) introduced, against 17.5.0's filter[F][null]=true.

The fix follows objectui#9159's precedent for [null]:

• Serializer: { F: { $empty: true | false } } → filter[F][empty]=true|false, beside any [null] param and range bound. A non-boolean $empty writes nothing.
• Reader (parseUrlFilterTriples, the ADR-0055 /data surface): [empty]=true|false → [F, 'is_empty' | 'is_not_empty', true], the triples convertFiltersToAST emits. Any other value is dropped. The pair stays out of URL_FILTER_OPS, for the reason the NULL_FILTER docblock gives ("Save as view" correctness).
• Chips: the existing filterBuilder.operators.is_empty / is_not_empty keys. No new string.
• $empty and $null on one field are two params, both written and both read back. That matches convertFiltersToAST's ['and', …] for the same object, so nothing degrades.
• The NULL_FILTER docblock's "a COMPOSED drill filter only ever arrives spelled $null" is corrected for 17.6.0.

⛔ The equality route's operator arm (parseUrlEqualityFilterTriples, objectui#9196) is untouched, as are composeDrillFilter, the dataset inspector and the i18n packs.

Tests

• Red first on the trunk tip 13f07dd0f: 10 of 12 new cases failed (for example '?filter[stage]=won' with no emptiness param). The 2 [null] controls passed.
• Green: the module's import radius, 14 files and 213 tests; the 40 ObjectView.* importers, 394 tests; app-shell type-check exit 0.
• Ablations (each restored by blob hash):
  • the serializer arm → 17 red;
  • the reader arm → 21 red (Save-as-view and the zh/en chip pins included).
• Gates: changeset presence and no-major, citations (0 new), control bytes, check:i18n-keys, the vi-mock family, check:spec-symbols. Governed-queue guard: NOT GOVERNED.

Changeset

.changeset/11547-drill-url-is-empty-operator.md: @object-ui/app-shell minor. That is the level objectui#9159 and objectui#9508 used for a URL-dialect widening.

Measured reach: 0 authored dashboard or chart widget filters with an empty operator across objectstack examples, hotcrm, cloud and objectui. Stored customer dashboards are not measured. This lands before the next objectui release, which is held on #5400 until it does.

Claim 5969214761 · dev report 5969555930 · the at-tier contract review follows on this PR.

🤖 Generated with Claude Code

https://claude.ai/code/session_016tKoy8NJa35Yih1FdzrVmn

[github-actions]

changeset-claim-re-read

⚠️ 1 pending changeset(s) describe a file this change touches

Their bodies publish verbatim into the CHANGELOG at the next release, so this is a request to re-read them against your diff — addressed here because you are the one seat that can answer it without re-deriving anything.

⛔ Nothing here blocks, and nothing here is a verdict on your change. This gate exits 0, is not a required context, and judges name resolution, never meaning: it asked whether a pending body names a file you touched. "Is this sentence still true?" is the one question it will not answer, and the one you are being asked to answer.

.changeset/9159-drill-url-isnull-operator.md

• names ObjectDataPage.saveAsViewFilterFold.test.ts → packages/app-shell/src/views/ObjectDataPage.saveAsViewFilterFold.test.ts — edited by this change

  The range maps are deliberately untouched: is_null is already a canonical ViewFilterRule word, and ObjectDataPage inverts URL_FILTER_OPS to bridge a triple's operator to the spec's alias spelling. An entry there would have sent it through that bridge as the alias null, which the rule schema refuses — a "Save as view" that silently loses the condition. ObjectDataPage.saveAsViewFilterFold.test.ts pins the fold for the new operator, and drillEmptyBucketNavHost-9085.test.ts — which recorded this boundary as open — is updated to record it closed.

Read the paragraph, not the line: both false halves of the objectui#8617 claim sat in one paragraph, and correcting either alone would have left it asserting the same wrong thing.

If a claim did go false, correct the body. That is precedented and prose-only, frontmatter untouched; check-changeset-overwrite.mjs will report the correction as its own case 2 ("correcting a declaration on purpose … legitimate"), which is the intended shape — one gate asks for the read, the other records the write.

Not covered, stated so nobody reads this as more: a born-false claim that spells no line address at all (objectui#9495 coordinated one by ORDINAL — "a grep finds that member first" — and deciding that means reading what the sentence means), a claim spelled as a symbol or a package rather than a backticked file name, and a file named ambiguously.

Compared the checked-out tree with 6158e4c93 (merge-base with origin/main): 5 file(s) changed outside .changeset/, read against 2076 pending declaration(s) that publish a body (2711 pending in total). · run

[github-actions]

✅ Console Performance Budget

Metric	Value	Budget
Eager closure (gzip, 330 chunks)	3307.5 KB	3330.4 KB
Main entry chunk (gzip)	150.3 KB	350 KB
Entry file	index-BdeU-0Dd.js	—
Status	PASS	—

The eager closure is every chunk the entry reaches through static imports — what the browser fetches and parses before the app renders. The entry chunk on its own is a small fraction of it.

---

📦 Bundle Size Report

Package	Size	Gzipped
app-shell (consoleActionDispatch.js)	0.20KB	0.19KB
app-shell (index.js)	16.88KB	6.25KB
app-shell (runtime-config.js)	20.68KB	7.36KB
app-shell (types.js)	0.01KB	0.04KB
app-shell (urlParams.js)	10.11KB	3.87KB
auth (ActiveOrganizationStorage.js)	27.95KB	10.04KB
auth (AuthContext.js)	0.31KB	0.24KB
auth (AuthGuard.js)	2.07KB	1.00KB
auth (AuthProvider.js)	40.22KB	10.61KB
auth (AuthShell.js)	3.49KB	1.40KB
auth (ForgotPasswordForm.js)	12.21KB	3.45KB
auth (LoginForm.js)	18.17KB	5.40KB
auth (PreviewBanner.js)	0.90KB	0.50KB
auth (RegisterForm.js)	6.72KB	2.24KB
auth (SocialSignInButtons.js)	9.70KB	3.93KB
auth (UserMenu.js)	3.39KB	1.21KB
auth (auth-gate-events.js)	1.29KB	0.66KB
auth (authStyles.js)	5.04KB	1.72KB
auth (createAuthClient.js)	40.70KB	10.94KB
auth (createAuthenticatedFetch.js)	8.54KB	3.46KB
auth (index.js)	3.63KB	1.64KB
auth (invitation-status.js)	1.22KB	0.70KB
auth (org-roles.js)	6.66KB	2.78KB
auth (phone-identifier.js)	1.11KB	0.66KB
auth (types.js)	0.59KB	0.35KB
auth (useAuth.js)	5.30KB	1.02KB
auth (useWorkspaceAdminStatus.js)	11.08KB	4.58KB
collaboration (CommentThread.js)	27.11KB	7.97KB
collaboration (LiveCursors.js)	3.17KB	1.27KB
collaboration (PresenceAvatars.js)	6.28KB	2.60KB
collaboration (PresenceProvider.js)	2.79KB	1.13KB
collaboration (index.js)	1.68KB	0.73KB
collaboration (useCollaborationTranslation.js)	6.50KB	2.52KB
collaboration (useCommentSearch.js)	1.98KB	0.88KB
collaboration (useConflictResolution.js)	7.75KB	1.86KB
collaboration (useMentionNotifications.js)	1.81KB	0.68KB
collaboration (usePresence.js)	6.33KB	1.84KB
collaboration (useRealtimeSubscription.js)	7.91KB	2.01KB
components (index.js)	570.92KB	136.80KB
core (index.js)	10.00KB	3.96KB
create-plugin (index.js)	27.94KB	9.51KB
data-objectstack (index.js)	231.08KB	64.07KB
fields (index.js)	261.51KB	66.22KB
i18n (LocalizationContext.js)	1.76KB	0.96KB
i18n (builtinAggregateLabels.js)	0.86KB	0.49KB
i18n (currency.js)	2.59KB	1.22KB
i18n (fallbackInterpolation.js)	6.25KB	2.77KB
i18n (i18n.js)	8.87KB	3.64KB
i18n (index.js)	5.24KB	2.27KB
i18n (pickLocalized.js)	9.86KB	3.95KB
i18n (provider.js)	39.35KB	12.88KB
i18n (translateFn.js)	0.20KB	0.18KB
i18n (useDisplayLocale.js)	3.52KB	1.76KB
i18n (useObjectLabel.js)	34.49KB	9.23KB
i18n (useSafeTranslation.js)	7.14KB	2.92KB
layout (index.js)	39.47KB	11.25KB
mobile (MobileProvider.js)	0.92KB	0.49KB
mobile (ResponsiveContainer.js)	0.94KB	0.38KB
mobile (breakpoints.js)	1.51KB	0.70KB
mobile (createOfflineDataSource.js)	5.61KB	1.75KB
mobile (index.js)	1.99KB	0.87KB
mobile (offlineQueue.js)	3.91KB	1.35KB
mobile (pwa.js)	0.97KB	0.49KB
mobile (serviceWorker.js)	1.48KB	0.62KB
mobile (serviceWorkerSource.js)	3.41KB	1.48KB
mobile (useBreakpoint.js)	1.54KB	0.65KB
mobile (useGesture.js)	6.96KB	1.98KB
mobile (useOfflineSync.js)	1.99KB	0.72KB
mobile (usePullToRefresh.js)	6.62KB	2.45KB
mobile (useResponsive.js)	0.72KB	0.42KB
mobile (useSpecGesture.js)	5.52KB	2.10KB
mobile (useTouchTarget.js)	1.01KB	0.54KB
permissions (MePermissionsProvider.js)	13.86KB	5.00KB
permissions (PermissionContext.js)	0.31KB	0.25KB
permissions (PermissionGuard.js)	0.89KB	0.45KB
permissions (PermissionProvider.js)	6.52KB	2.26KB
permissions (discardProofCache.js)	1.04KB	0.55KB
permissions (evaluator.js)	8.33KB	3.07KB
permissions (index.js)	0.93KB	0.41KB
permissions (store.js)	0.91KB	0.42KB
permissions (useFieldPermissions.js)	1.28KB	0.53KB
permissions (usePermissions.js)	4.83KB	2.27KB
plugin-ai (index.js)	16.04KB	3.92KB
plugin-calendar (index.js)	53.17KB	15.46KB
plugin-charts (index.js)	83.60KB	22.89KB
plugin-chatbot (index.js)	198.22KB	46.97KB
plugin-dashboard (index.js)	142.26KB	38.44KB
plugin-designer (index.js)	231.28KB	48.76KB
plugin-detail (index.js)	245.43KB	64.53KB
plugin-editor (index.js)	2.23KB	1.05KB
plugin-form (index.js)	172.73KB	44.50KB
plugin-gantt (index.js)	179.16KB	45.06KB
plugin-grid (index.js)	234.37KB	64.34KB
plugin-kanban (index.js)	49.59KB	15.58KB
plugin-list (index.js)	116.55KB	28.95KB
plugin-map (index.js)	25.60KB	8.62KB
plugin-markdown (index.js)	13.88KB	4.80KB
plugin-report (index.js)	44.12KB	12.29KB
plugin-timeline (index.js)	38.80KB	11.71KB
plugin-tree (index.js)	14.51KB	5.15KB
plugin-view (index.js)	90.23KB	22.73KB
providers (DataSourceProvider.js)	0.75KB	0.39KB
providers (MetadataProvider.js)	1.37KB	0.59KB
providers (ThemeProvider.js)	1.90KB	0.85KB
providers (UploadProvider.js)	11.81KB	3.58KB
providers (index.js)	0.45KB	0.23KB
providers (types.js)	0.01KB	0.04KB
react-runtime (index.js)	5.62KB	2.34KB
react (LazyPluginLoader.js)	4.47KB	1.63KB
react (SchemaRenderer.js)	120.63KB	39.56KB
react (data-invalidation.js)	5.05KB	2.08KB
react (index.js)	4.50KB	2.06KB
react (schema-input.js)	4.25KB	2.04KB
react (spec-input.js)	0.20KB	0.18KB
sdui-parser (body-dialect.js)	4.50KB	1.99KB
sdui-parser (codegen.js)	9.45KB	3.76KB
sdui-parser (dashboard-widget-options.js)	3.08KB	1.30KB
sdui-parser (index.js)	6.06KB	2.68KB
sdui-parser (input-type.js)	2.84KB	1.40KB
sdui-parser (parse.js)	25.28KB	7.80KB
sdui-parser (provenance.js)	3.84KB	1.90KB
sdui-parser (types.js)	0.28KB	0.23KB
sdui-parser (validate.js)	21.42KB	7.05KB
types (ai.js)	4.39KB	2.17KB
types (api-types.js)	0.20KB	0.18KB
types (app.js)	4.12KB	1.61KB
types (authoring-nodes.js)	0.20KB	0.19KB
types (base.js)	0.20KB	0.18KB
types (blocks.js)	0.20KB	0.18KB
types (cloud.js)	0.20KB	0.18KB
types (complex.js)	4.16KB	1.96KB
types (crud.js)	0.20KB	0.18KB
types (dashboard-filter-alias.js)	6.23KB	2.74KB
types (dashboard-widget-layout.js)	2.06KB	0.96KB
types (data-display.js)	3.75KB	1.85KB
types (data-protocol.js)	0.20KB	0.19KB
types (data.js)	0.20KB	0.18KB
types (designer.js)	1.85KB	0.85KB
types (disclosure.js)	0.20KB	0.18KB
types (error-code.js)	1.54KB	0.88KB
types (expression.js)	0.20KB	0.18KB
types (feedback.js)	0.20KB	0.18KB
types (field-types.js)	0.20KB	0.18KB
types (form.js)	0.20KB	0.18KB
types (http-inflight.js)	8.87KB	3.73KB
types (http-retry.js)	4.32KB	2.02KB
types (icon-key-migration.js)	4.26KB	1.63KB
types (index.js)	5.07KB	2.39KB
types (layout.js)	0.20KB	0.18KB
types (managed-by.js)	0.19KB	0.18KB
types (mobile.js)	5.00KB	2.39KB
types (navigation.js)	0.20KB	0.18KB
types (objectql.js)	0.20KB	0.18KB
types (overlay.js)	0.20KB	0.18KB
types (permissions.js)	2.52KB	1.31KB
types (plugin-scope.js)	0.20KB	0.18KB
types (record-components.js)	0.20KB	0.19KB
types (record-semantics.js)	1.28KB	0.67KB
types (registry.js)	0.20KB	0.18KB
types (reports.js)	0.20KB	0.18KB
types (select-option.js)	0.20KB	0.19KB
types (spec-report.js)	4.99KB	1.96KB
types (spec-ui-namespace.js)	0.20KB	0.19KB
types (strict-authoring-face.js)	19.93KB	7.25KB
types (system-fields.js)	3.33KB	1.54KB
types (theme.js)	6.28KB	2.87KB
types (ui-action.js)	8.11KB	3.32KB
types (views.js)	0.20KB	0.18KB
types (widget.js)	0.20KB	0.18KB

Size Limits

• ✅ Core packages should be < 50KB gzipped
• ✅ Component packages should be < 100KB gzipped
• ⚠️ Plugin packages should be < 150KB gzipped

[objectstack-fleet]

Contract review

Served-tier: CONTRACT_REVIEW_TIER
Head-sha: 1fac6ff4a7a82cd3afcd2993af5b77b24baaa029
Local-runs: none

Read: card objectui#11547 (body, claim 5969214761, dev report 5969555930), PR #11548 (body, files, net diff against main), the head's check-runs, the NULL_FILTER precedent on main, and packages/spec/src/data/filter.zod.ts at @objectstack/spec@17.6.0 (and at 17.5.0 for the before state). The merge-base with main is main's tip 6158e4c93 (objectui#11531's landing), so the branch fast-forwards. The net diff is exactly the 6 files the claim scoped: drillUrlFilters.ts, its test, the new drillEmptyDialect-11547.test.tsx, the 9159 chip-i18n and Save-as-view fold pins, and one changeset. The head matches the dev report's 1fac6ff4a.

Check-runs on the head (gate verdicts): 26 success, 3 skipped (the coverage jobs and dependabot), 0 failure. Build & E2E, Test (dist pins), Bundle Analysis, Live E2E, README Export Check, Changeset Declaration / Bump Policy / Fixed Group, Line Citation Gate, Control Byte Scan, Governed Surface Queue Guard and Inert vi.mock Specifier Check are all green. ⚠️ Still in_progress when this record was written (13 jobs): Test shards 1 to 8, Type Check, Lint, Skill Example Check, Spec Main Shape Gate and Doc Snippet Type Check. This verdict judges the contract. It does not stand in for those gates, and merge waits for them to go green.

① Derived judgments

The spec lowering, at 17.6.0. All four empty spellings now lower to $empty:

• AST_OPERATOR_MAP at :2553–2556;
• convertComparison at :2748–2753, taking the direction from the operator name;
• canonicalAstOperator at :2613–2614, which keeps is_empty / is_not_empty as their own canonical names;
• $empty sits in FILTER_OPERATORS (:3167).

At 17.5.0 the same four lowered to $null (:2509–2512). The card's premise holds: on 17.6.0, a composed drill hands the serializer { F: { $empty: bool } }. On main, collectFilterParams had no arm for it, so the condition was dropped and the list opened on a superset.

The serializer's $empty arm: correct.

• Booleans only. The typeof empty === 'boolean' gate copies nullDirection's gate. Pinned: 'yes', 1, 0, 'true', null and {} each write nothing, with a positive control that both boolean forms do write.
• Beside the other params. The arm is its own params.set on its own key, filter[F][empty]. It sits between the null arm and the range loop, so it never replaces the [null] param or a range bound. Pinned with { $empty: false, $gte: '5' }.
• Two params when $empty and $null share a field. This decision is sound, and narrower than the $null-vs-$exists posture. The two keys are distinct params, so the URL carries both conditions and the list ANDs them. convertFiltersToAST on main pushes one condition per operator key in object key order, then wraps them as ['and', …] (filter-converter.ts :1071–1076). The URL's triples are that conjunction's body, and the pin checks ['and', ...triples] against the converter for three objects.
• ⚠️ Non-blocking: the match is exact only up to conjunct order. All three pinned objects list the null key first. For { $empty: …, $null: … } the converter emits the is-empty triple first, while the URL always reads [null] first. AND is commutative, so the selected rows are the same, but the docblock's "exactly as convertFiltersToAST does" holds only when conjunct order is ignored.

The /data reader's [empty] suffix: correct.

• parseUrlFilterTriples reads [empty]=true as [F, 'is_empty', true] and [empty]=false as [F, 'is_not_empty', true]. These are the exact triples convertFiltersToAST emits for $empty on main (objectui#11094, filter-converter.ts :880). The comparand is true in both, matching the [null] precedent.
• Any other value is dropped: 1, 0, yes, TRUE, False, null, empty and the empty string are all pinned.
• The sink lowers the triples back to $empty. This is pinned through mergeFilterNodes, isFilterAST and parseFilterAST.
• Kept out of URL_FILTER_OPS. The match is a strict suffix === EMPTY_FILTER.param checked before the range lookup. URL_FILTER_OPS and RANGE_OP_PARAM are byte-unchanged, and a control pins the map at { gte, lte, gt, lt }.
• "Save as view". TRIPLE_OP_TO_SPEC_ALIAS is the inverse of URL_FILTER_OPS and has no is_empty entry, so the fold passes the operator to normalizeFilterOperator unbridged. At 17.6.0, is_empty / is_not_empty are canonical VIEW_FILTER_OPERATORS words (ui/view.zod.ts :261), and unary operators accept value: true (the spec's own value-shape sweep). The fold pin reads from the URL and checks the record gate, in both directions. The emittable census grew from 7 to 9 entries. That strengthens it; nothing was relaxed.
• Removal. The prefix delete already covers the new suffix. Pinned with [empty] beside [null].

Chips: correct. They reuse filterBuilder.operators.is_empty / is_not_empty, which are present under filterBuilder.operators in all ten packs (ar, de, en, es, fr, ja, ko, pt, ru, zh). The diff adds no new string and touches nothing under packages/i18n. The chip pin renders the chip through the real page with the real zh and en packs, and checks that the two directions differ from each other and from the is-null label. When both pairs sit on one field, the is-null label wins (pinned). That is the existing one-chip-per-field posture: the chip under-describes the field while the list applies both conditions. Non-blocking.

Docblocks, judged at 17.6.0: true.

• The NULL_FILTER sentence now says the COMPOSED route's is-null condition "only ever arrives spelled $null". That is true, because is_null / is_not_null still lower to $null.
• The added note is true: is_empty / is_not_empty lower to $empty from 17.6.0, and all four lowered to $null before it.
• EMPTY_FILTER's gloss of $empty (declared-type judgment: '' on text-like fields, [] on multi-value fields) matches EMPTY_PREDICATE_DESCRIPTION.
• The module header gains the [empty] row, and the row that was "emptiness" is renamed "is null".
• ⚠️ Non-blocking: the serializer, deleteFieldFilterParams and groupFilterChips docblocks still call NULL_FILTER "the emptiness pair". That is now ambiguous beside EMPTY_FILTER.

Accepted set of the ADR-0055 /data surface: widens by exactly one suffix.

• Before, the reader accepted gte, lte, gt, lt and null. It now also accepts empty, nothing else.
• Every URL main already read keeps its meaning. On main, an [empty] param fell to the unknown-suffix drop.
• ⛔ The equality route is untouched. The parseUrlEqualityFilterTriples docblock and body (32 lines) are byte-identical between main and the head, so its operator arm stays reserved (objectui#9196). A new control pins that filter[owner][empty]=true yields [] there.
• The drillUrlFilters module is not re-exported, and app-shell's exports map is only . and ./styles.css. EMPTY_FILTER is therefore package-internal, and the only public widening is the URL surface.

Pins: red first, ablations, nothing weakened or skipped.

• Red first. The dev reports 10 failed and 2 passed on 13f07dd0f. That matches the new file exactly: 12 cases, 2 of them [null] controls.
• Ablations. I re-derived both counts case by case from the diff:
  • Serializer arm: 7 cases in drillUrlFilters.test.ts plus 10 in the 11547 file give 17. The two fold pins and the three chip-i18n pins read the URL directly and stay green. The report says 17.
  • Reader arm: 7, 9, 2 and 3 across the four files give 21. The is-empty-only case asserts only the search string and stays green. The report says 21.
• Nothing weakened. The only removed test lines are two import lines and the old 7-entry emittable census, which was replaced by a strict superset. No .skip, .only or .todo, no xit, no eslint-disable, @ts-ignore, @ts-expect-error or as any in the diff.
• Card obligations. Each one is pinned: both directions of the composed drill, the round trip to is_empty, "Save as view", the non-boolean drop, and the unchanged $null / $exists controls.

② Semver level

@object-ui/app-shell minor is right.

• Precedent. .changeset/9159-drill-url-isnull-operator.md and .changeset/9508-drill-url-dialect-is-not-null.md both declare '@object-ui/app-shell': minor for a widening of this same dialect. This PR is the same shape: one more suffix, read on both sides, with a chip.
• Not a patch. The 17.6.0 regression is the cause, but the fix grows the accepted set of an addressable public URL surface. A patch would understate that.
• Not a major. No URL that main accepted changes meaning, and no export leaves the package.

The Clause-②: yes (widening) arm is correct and present in the PR body. The claim's Why yes names the same widening ([empty], as objectui#9159's [null]). There is one changeset, for one package, and the Changeset Bump Policy, Declaration and Fixed Group checks are green.

③ Boundary flags

1. objectui#10813's pending slice must reconcile three things. Carrier: objectui#10813. Not blocking here.
   • The inspector sentence goes stale. NULL_FILTER's docblock still says the dataset filter inspector's "is not empty" row "writes exactly that pair" ($exists). That is true on main today and becomes false the moment objectui#10813 makes the inspector write { $empty: true or false }. The slice must:
     • remove or rewrite that sentence on NULL_FILTER;
     • point the inspector's rows at EMPTY_FILTER, which already carries $empty on the UNCOMPOSED route (ObjectMetricWidget's drawer into OpenInListButton);
     • keep the $exists read arm, which other authors may still feed verbatim.
   • Rebase without reverting. This PR rewrote the COMPOSED bullet of the same docblock, so objectui#10813 has to rebase onto this head's text, not reapply its old drill-sentence edits. The claim records that its rework drops those edits in favour of this card. Only the inspector sentence remains its own.
   • The drill URL changes for inspector widgets. The inspector's "is not empty" drill moves from filter[F][null]=false (IS NOT NULL) to filter[F][empty]=false (declared-type not-empty). That matches the widget's own count, but it changes which rows the list shows. objectui#10813 should pin the inspector-to-drill path end to end and say so in its changeset.
   • Landing order. objectui#10813 must land after this PR. Landed first, the inspector's $empty rows would drill to nothing, which is this card's superset again.
2. Dev finding: the objectui#9508 it.each title prints the operator object in its second %s. Carrier: none. Not filed, cosmetic, and this card's own block was already fixed in 846ee2bf9. Agreed.
3. New, the dev did not report it: a stale count in ObjectDataPage.tsx. The foldUrlFilterTriplesToSpecRules docblock still says "parseUrlFilterTriples only ever emits the five operators bridged above". That was stale from objectui#9159 (7 operators) and is now 9. The file is outside this PR, and the behaviour is pinned correct by the emittable census. Carrier: none, or whichever card next edits ObjectDataPage.tsx. Non-blocking.
4. Conjunct order (from ①). It is not a defect. If a future pin compares the URL against the converter, it should either sort the conjuncts or also cover the $empty-first key order.
5. NOT MEASURED, carried from the card and the report:
   • Stored customer dashboards with an empty operator. The authored reach is 0 across objectstack examples, hotcrm, cloud and objectui.
   • The whole app-shell test suite run locally (timed out at 560 s). It is declared to CI, and the CI test shards are among the 13 in_progress jobs above.
6. Scope held. No edit to composeDrillFilter, the spec, the dataset inspector, the i18n packs or parseUrlEqualityFilterTriples. NOT GOVERNED by the queue guard, which is green.

Implemented-by: claude/issue-11547-drill-url-empty-17-6
Reviewed-by: session_016tKoy8NJa35Yih1FdzrVmn

VERDICT: PASS