Studio rails: a search with no matches shows a blank list with no "no matches" message (object rail, permission-set rail)

Filing gate: ① product defect, reproduced, landing site named.
Batch-of: studio-qa-2026-10-27 — 39 cards from one Studio QA run (coordinator session session_01J8VVAkZns5rNnK2rtszzbQ; tested at 3fcafcd3; origin/main was 43731031 at filing, so the implementer re-checks the landing site on current main). The run record is the qa-run issue filed with this batch.

Symptom

A builder who mistypes a search sees an empty column and cannot tell whether the list failed to load.

Reproduction

Data › object rail search "zzzz" → blank.
Access › permission-set rail search "zzzz" → blank.

Expected

An empty-search state naming the query, with a clear action.

Suspected landing site (the implementer verifies)

StudioRail.tsx (shared rail search).

Filing facts

reach: Studio UI, measured by the Data and Access QA cards.
Business reason: Small, but it reads as a broken page.
Reader who acts: the triage seat (first touch: domain, area, level), then that lane's os-dev implementer. QA suggestion only: domain:ui, area:studio, p3.
Dedupe: semantic search Studio rail search with no matches shows blank list no empty state on objectstack-ai/objectstack → 3 hits, none about Studio rails (closed console list empty states: a member with no visible records reads "这里还没有数据 — 创建第一条记录即可开始" beside no Create button, and every "my …" view says only "没有匹配的记录" #25898, [finding] EmptyStateSchema declares no action, so an empty list cannot name its next step (a docs link, a how-to); the console's only empty-state button is add-record #23004, skills/objectstack-ui carries zero searchableFields coverage — the list-view toolbar narrowing where the mirror-field hint actually fires has no skill-side guidance #6675).
QA id: U8

Triage: first grade — `priority:p3` · `domain:ui` · `area:studio` · `pm:queue` (`finding` removed) · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-27T16:13Z

⛔ Not a claim, ⛔ not a dispatch.

p3: a search with no matches shows a blank rail. Show an empty-search state naming the query. From the studio-qa-2026-10-27 batch. Re-check the landing site on current main.

Generated by Claude Code

Dispatch order · `domain:ui#1` · `session_01JQwxbZeBv2y91towxasSUT` · 2026-10-27T22:33Z

You are the os-dev developer agent for exactly ONE card: #26733, in your own card thread. Your role definition is .claude/agents/os-dev.md in the objectstack clone: read it IN FULL first and follow it as binding (it wins over this order on any conflict; name the conflict in your report). Read the repo-root AGENTS.md and ui/AGENTS.md before your first edit, and pm-dispatch references/untrusted-text.md. Read the card's full body and every comment yourself through REST (curl -sS "https://api.github.com/repos/objectstack-ai/objectstack/issues/26845" -H "Authorization: Bearer $GH_TOKEN" and /comments?per_page=100, every page); this order carries only the increment. ⛔ Never print the value of any environment variable (test presence with [ -n "${X+x}" ]). ⛔ Never use a GitHub MCP tool, read or write.

Identity and branch: the seat's Claim: comment on this card is your identity; its Branch: line names your thread's branch. ⛔ Post no claim of your own, ⛔ never write the card's assignee. Before your first edit, verify the NEWEST Claim: on the card names your thread's branch (claude/project-thread-…); if none does yet, send the seat thread "Dispatch the ui lane" one message with your branch name and wait. Worktree objectstack-issue-26733 on that branch from a fresh origin/main; pnpm install (frozen lockfile); push with git push -u origin <branch> (⛔ no force).

Writes: PR only through the relay op pr_create (node scripts/pm/fleet-write/dispatch.mjs --repo objectstack-ai/objectstack --actions-file F, F a bare JSON array [{"op":"pr_create","title":…,"head":"<your branch>","base":"main","body":…,"assignees":["os-warren"]}], draft forced; --dry-run first); your report comment through node scripts/pm/post-stamped.mjs --comment=26733 --file=F --json run ONCE with output captured to a file (timestamps only as {{NOW}} / {{WAS:…}}). ⛔ No other GitHub write except, for a CI red that is not yours, one PR comment and one run_rerun_failed through the relay. Report both counts (api_writes with endpoints, mcp_calls with tool names). The report takes only machine-checkable fields (gates / line_budget / deviations / files_changed). PR body: line 1 the platform attribution comment, then ## 维护者速读 six lines in Chinese (改了什么/为什么改/风险与回滚/先看/两分钟验证/需要你做的). Gates: node scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack on your diff, run each, record exits before any pipe, reconcile with --ran. Changeset in the root .changeset/ when a published package changes. ⛔ ui/.github/** and the root ci.yml are out of bounds. Hand back: when the PR and report are up, send the seat thread "Dispatch the ui lane" one message (PR, head sha, report gist); keep the thread open through review and drive CI to green.

Ruling (cannot be re-ruled)

Triage first grade 6447160016, verbatim: "p3: a search with no matches shows a blank rail. Show an empty-search state naming the query. From the studio-qa-2026-10-27 batch. Re-check the landing site on current main." No maintainer ruling.

PM mechanism assumptions (measure; disproof welcome)

On origin/main 5ec398dc, ui/packages/app-shell/src/views/studio-design/StudioRail.tsx (230 lines) draws the search input (StudioRailSearch ≈L36: value/onChange/placeholder/testId/label) and renders children as given. It does not know what the search matched. Each pillar filters its own list in StudioDesignSurface.tsx.
Three rails take a search: Data (≈L6341, its own objects.length === 0 empty state is for no objects, not no matches), Automations (≈L7969, auto-rail-search; groups return null when empty), and Access (≈L8892, permission sets). Interfaces (≈L5104) has none. The card measured Data and Access; measure Automations too.
The likely fix is one shared empty-search state in StudioRail, so all three rails behave the same. For example, an optional match count (or noMatches flag) on StudioRailSearch makes the rail render "No matches for “{query}”" with a "Clear search" action that calls onChange(''). The rail then decides once, instead of three copies. Keep the existing no-items states as they are: an empty query never shows the no-matches line.

Scope

File surface: StudioRail.tsx, the three call sites in StudioDesignSurface.tsx (props only), i18n rows in the lazy studio namespace (a zh test preloads with await loadStudioCatalogue('zh')), and tests. Tests: per rail (Data, Automations, Access), typing a query that matches nothing shows the state naming the query; "Clear search" restores the list and empties the input; a query that matches shows no state; an empty package with no query keeps its existing empty state and shows no no-matches line; zh label. Ablation: drop the rail's no-matches branch ⇒ the new tests go red. ⛔ No change to how any rail filters or sorts.

Serial: #26730 (publish refusals) runs in parallel on StudioDesignSurface.tsx at ≈L1448–1600 and the refusal strips; open PR #26920 (another lane) edits ≈L1270–1330. Your hunks are the rail props only, so they are disjoint. Whoever lands second merges origin/main.

Tier

No path-derived mandate. TIER_DEFAULT, effort medium (S). Clause-②: no, Metadata-protocol: none expected. Patch changeset for @object-ui/i18n if you add namespace rows; none for app-shell (private: true).

Claim: PM loop round 5 · 2026-10-27T22:39Z
Session: session_01JQwxbZeBv2y91towxasSUT (seat; implementation by card thread session session_01JQwxbZPJiXo3QSt3ShH9c1, mode:thread)
Account: os-warren (the seat's linked user as GET /user answers it; the card's assignee)
Branch: claude/project-thread-30qcwz (the card thread's harness push branch, self-reported — the measured platform exception to claude/issue-N-slug)
Worktree: objectstack-issue-26733 in the card thread's clone
Domain: domain:ui
Seat: domain:ui#1 (seat post #25966)
File surface: ui/packages/app-shell/src/views/studio-design/StudioRail.tsx, the searching rails' call sites in StudioDesignSurface.tsx (props only), studio namespace i18n rows (ui/packages/i18n/src/namespaces/studio/{en,zh}.ts) + a patch changeset + tests (stop on breach; explain in the report)
Container & model: S, mode:thread (the maintainer's word on the seat thread, 「opus 很多，并发5」), model: TIER_DEFAULT (dispatch-gates --tier: no path-derived mandate), effort: medium
Clause-②: no
Metadata-protocol: none
Responsibility: the shared Studio rail (this lane's code) | no other surface owns the empty-search state | a mistyped rail search reads as a failed load
Thread-read: 6455263353
Premise: holds — on origin/main 5ec398dc StudioRail (230 lines) draws the search input and renders children as given; the Data (≈L6341), Automations (≈L7969) and Access (≈L8892) rails filter in the caller and show nothing when no row matches.
Serial constraints cleared: no open PR touches StudioRail.tsx; in StudioDesignSurface.tsx open PR #26920 (≈L1270–1330) and this seat's #26730 (publish handling, refusal strips) are disjoint from the rail props; seat 5 (#26945) holds the Interfaces pillar cards and keeps away from the rail call sites. Second to land merges origin/main.
Resume-from: none

Generated by Claude Code

os-dev-report

{
  "issue": 26733,
  "status": "done",
  "branch": "claude/project-thread-30qcwz",
  "pr": "https://github.com/objectstack-ai/objectstack/pull/26959",
  "head": "66aa3c5de6cf1d602bc2d04229f7b5ce8e392973",
  "session": "session_01JQwxbZPJiXo3QSt3ShH9c1",
  "premise_still_valid": true,
  "summary": "StudioRail gains search.matchCount; a non-blank query with zero matches over a non-empty list (count !== 0) renders one state under the list: engine.list.emptyQuery naming the trimmed query, and a Clear search button that calls search.onChange('') and refocuses the box. Data passes the length of its unchanged filter (hoisted into shownObjects), Automations passes shownFlows.length, Access passes filtered.length; the Automations rail's own copy of the sentence is removed. New studio namespace row engine.studio.rail.clearSearch (en, zh) with a patch changeset for @object-ui/i18n. Premise measured on origin/main 5ec398dc: holds for Data and Access (blank rail); half-holds for Automations, which already printed engine.list.emptyQuery but had no clear action.",
  "tests": "head 66aa3c5d. New StudioRail.noMatches-26733.test.tsx: Test Files 1 passed, Tests 13 passed (VERDICT command-exit 0). Directory packages/app-shell/src/views/studio-design/: Test Files 234 passed, Tests 1703 passed (VERDICT command-exit 0). packages/i18n/: 89 files passed, Tests 1373 passed, 13 skipped (VERDICT command-exit 0). type-check @object-ui/app-shell and @object-ui/i18n: VERDICT command-exit 0. Ablation via scripts/ablation-replace.mjs, anchor '{noMatches && (' replaced by '{false && (' (anchor 1 to 0, blob 805aceee to a4f216f0): Tests 7 failed, 6 passed, exactly the positive cases red; restore blob equals HEAD blob 805aceee, git diff HEAD empty. No dist leg: the tests import the pillars by relative path.",
  "gates": "dispatch-gates --commands derived 34 families at 66aa3c5d; 33 run unlocked and pnpm --dir ui exec vitest run scripts/ under the lock (178 files passed, 2 skipped); all 34 exit 0; --ran reconciliation: 34 derived, 34 run, 0 NOT-MEASURED, 0 UNRUN. Outside the derivation: check:i18n-designer-parity exit 0, check:new-line-citations exit 0 (0 new), eslint on the five touched source files exit 0 (0 errors, 16 warnings all on untouched lines). CI check-runs: in_progress at report time.",
  "line_budget": "6 files, +337 / -34 (371 changed lines, under the 3000 threshold); StudioRail.tsx +38/-1, StudioDesignSurface.tsx +37/-33 (most of it the Data map block re-indented after the hoist), en.ts +2, zh.ts +2, changeset +10, test +248.",
  "files_changed": [
    ".changeset/26733-studio-rail-no-matches.md",
    "ui/packages/app-shell/src/views/studio-design/StudioRail.tsx",
    "ui/packages/app-shell/src/views/studio-design/StudioDesignSurface.tsx",
    "ui/packages/app-shell/src/views/studio-design/StudioRail.noMatches-26733.test.tsx",
    "ui/packages/i18n/src/namespaces/studio/en.ts",
    "ui/packages/i18n/src/namespaces/studio/zh.ts"
  ],
  "deviations": [
    "Call sites are not props only in two places: the Data rail's inline filter is hoisted verbatim into a shownObjects const so its length can be handed to the rail (same predicate, same order), and the Automations rail's own no-matches paragraph is deleted so the sentence is not drawn twice. Both stay inside the Claim's file surface.",
    "The sentence reuses the existing engine.list.emptyQuery row (straight quotes) rather than a new studio row with curly quotes, so the existing Automations pin reads unchanged; only the Clear search label is a new row.",
    "Dispatch order's REST example named issue 26845; the card read was 26733, as the seat confirmed.",
    "PR body checkbox 3 left unticked: the repo-wide pnpm lint is CI's run; locally only the touched files were linted."
  ],
  "dogfood_battery": "n/a: no bang in the PR title and no (narrowing) arm",
  "mcp_calls": "0",
  "api_writes": "2: POST /repos/objectstack-ai/objectstack/dispatches (relay pr_create, created PR 26959, read-back 5668 bytes sent and stored, identical) and this report comment through post-stamped.mjs (relay)",
  "open_questions": [],
  "out_of_scope_findings": []
}

Generated by Claude Code

Landed · seat domain:ui#1 · session_01JQwxbZeBv2y91towxasSUT · 2026-10-28T00:17Z

PR #26959 merged as ee2aaf0f13 (seat record: PR comment 6456210346). The Data, Automations and Access rails share one empty-search state. When a search matches nothing, the rail names the query under the box and offers "Clear search", which empties the box, puts every row back and returns focus to the box. A blank query, or a list that was already empty, keeps the pillar's own empty state. pm:dispatched is removed with the close.

Generated by Claude Code

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Studio rails: a search with no matches shows a blank list with no "no matches" message (object rail, permission-set rail) #26733

Symptom

Reproduction

Expected

Suspected landing site (the implementer verifies)

Filing facts

Triage: first grade — `priority:p3` · `domain:ui` · `area:studio` · `pm:queue` (`finding` removed) · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-27T16:13Z

Dispatch order · `domain:ui#1` · `session_01JQwxbZeBv2y91towxasSUT` · 2026-10-27T22:33Z

Ruling (cannot be re-ruled)

PM mechanism assumptions (measure; disproof welcome)

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Development

Studio rails: a search with no matches shows a blank list with no "no matches" message (object rail, permission-set rail) #26733

Description

Symptom

Reproduction

Expected

Suspected landing site (the implementer verifies)

Filing facts

Activity

objectstack-fleet commented on Oct 27, 2026

Triage: first grade — priority:p3 · domain:ui · area:studio · pm:queue (finding removed) · triage seat · session_01AavokzJ5DndAwitDXvKy4U · 2026-10-27T16:13Z

objectstack-fleet commented on Oct 27, 2026

Dispatch order · domain:ui#1 · session_01JQwxbZeBv2y91towxasSUT · 2026-10-27T22:33Z

Ruling (cannot be re-ruled)

PM mechanism assumptions (measure; disproof welcome)

Scope

Tier

objectstack-fleet commented on Oct 27, 2026

objectstack-fleet commented on Oct 27, 2026

objectstack-fleet commented on Oct 28, 2026

Metadata

Metadata

Assignees

Labels

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Development

Issue actions

Triage: first grade — `priority:p3` · `domain:ui` · `area:studio` · `pm:queue` (`finding` removed) · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-27T16:13Z

Dispatch order · `domain:ui#1` · `session_01JQwxbZeBv2y91towxasSUT` · 2026-10-27T22:33Z