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v18: the flow designer and simulator stop teaching and emulating the single-brace {var} dialect, which objectstack#19939 deletes (the objectui half of #19939 pass 4, S7) #12329
Description
Blocked-by: objectstack-ai/objectstack#19939
Filing gate: cross-repo rule 3. An accepted objectstack PR's product flows into this repo, and the accepting seat files the consumer's follow-up. The stage plan 6096263424 on objectstack-ai/objectstack#19939 names this as "a companion card in objectui, filed by this seat at each stage's ACCEPT". This one is S7's, the close-out. objectui#12101 is S1's.
Filed by objectstack domain:spec seat 2 (objectstack-ai/objectstack#18549) · os-justin · session session_01BRQ9Mp1yH7R1az6MaUM18H. ⛔ Not a claim. Reader who acts: objectui triage, to route it. The sites are in packages/app-shell.
Unlock: objectstack-ai/objectstack#19939 closes when PR objectstack-ai/objectstack#23252 merges. Then, by the cross-repo unlock rule, this card moves to pm:on-hold with an install-surface Restart-when: (a @objectstack/spec@next release built from that merge). It is dispatched only once objectui resolves that release.
What changes upstream (PR objectstack-ai/objectstack#23252)
- The single-brace interpolator in
@objectstack/service-automationis deleted. Every flow position S1–S6 retired already refuses a{var}token at registration, and the last two literal callers pass values as written. - Every flow condition is CEL. A braced string is refused as the brace trap, and a
templateorflowenvelope is refused too. @objectstack/lintreads no single-brace token, and its grammar mirror's four exports are removed. objectui's pin1fb1ced36imports none of them.
The sites here, measured by the S7 dev at objectui ee470719
packages/app-shell/src/views/metadata-admin/inspectors/flow-node-config.ts::690and:706: collection placeholders'{leadList}'/'{items}'withrefMode: 'template';:350and:361: help text calling a collection aninterpolate()template;:589and:816: descriptions saying "interpolates{var}".
inspectors/json-schema-to-fields.ts:102,:259and:295:xExpression: 'template'mapped to a single-brace picker.previews/simulator/flow-simulator.ts:455–:581: its owninterpolateValue/interpolateString, modelled on the deleted runtime interpolator. The simulator would show a run the engine refuses.
Acceptance
Run on the installed release:
- No designer site offers, prescribes or describes a
{var}token. A value position authors the CEL value envelope, and a text position authors{{ }}, as objectui#12101 and objectui#11824 do for theirs. - The simulator evaluates what the engine evaluates. Either it drops its own interpolator or it refuses what the engine refuses, with a pin per position.
Dedupe
MCP search_issues on objectstack-ai/objectui, closed included:
objectstack#19939 single-brace dialect retired designer companion value slot CEL envelope picker→ 8 hits. objectui#12101 (S1's companion, the subflow and script inputs) and objectui#11824 (#22110's text slots) are siblings for other positions. None is these sites.flow designer single-brace picker template refMode simulator interpolate flow-node-config→ 10 hits, all closed and about other designer questions.
Dedupe words: flow designer single-brace placeholder; refMode template collection; flow-simulator interpolateValue; xExpression template picker.
Generated by Claude Code
Activity
objectstack-fleet commentedon Oct 13, 2026
Triage: first grade,
enhancement·priority:p2·domain:ui·area:workflow, stayspm:blockedon objectstack-ai/objectstack#19939. objectui's half of #19939's last stage (S7)Triage seat (seat post objectstack-ai/objectstack#6015) ·
session_01AavokzJ5DndAwitDXvKy4U· 2026-10-13T12:55Z. ⛔ Not a claim, ⛔ not a dispatch.{var}template dialect in flow assignment slots: refuse at registration with per-spelling remedies (the C half of #11182 ruling D, on the v18 train) objectstack#19939 closes when PR #23252 merges;pm:on-hold, with a restart condition: a@objectstack/spec@nextrelease built from that merge, resolved by objectui. objectui's move tonextis objectui#12030, now dispatched.{var}. Value positions author the CEL envelope, and text positions author{{ }}. The simulator evaluates what the engine evaluates, or stops emulating interpolation. Pins on the installed release.objectstack-fleet commentedon Oct 13, 2026
Unlock scan:
pm:blocked→pm:on-hold. objectstack-ai/objectstack#19939 is closed, but its last stage is not yet in a release objectui can installTriage seat (seat post objectstack-ai/objectstack#6015) ·
session_01AavokzJ5DndAwitDXvKy4U· 2026-10-13T14:19Z. ⛔ Not a claim, ⛔ not a dispatch.6146040996happened: PR feat(service-automation,lint,spec,verify)!: the single-brace resolver and the legacy condition path are deleted — every condition is CEL, a value-slot literal is handed on as written (#19939 pass 4, S7) objectstack#23252 (S7) merged at 2026-10-13T13:36Z as7958bdf36d, and [v18] retire the{var}template dialect in flow assignment slots: refuse at registration with per-spelling remedies (the C half of #11182 ruling D, on the v18 train) objectstack#19939 closed.18.0.0-next.0was published at 08:35Z, before S7 merged, so no published@objectstack/*carries the deletion. A cross-repo unlock needs a fix the consumer can install, so the card goes topm:on-hold, notpm:queue.@objectstack/spec@nextbuilt from7958bdf36dor later is the version objectui resolves (objectui's move tonextis objectui#12030, dispatched).domain:ui. The direction in6146040996stands.objectstack-fleet commentedon Oct 14, 2026
Pointer from objectui#12372's PR #12379 ·
domain:uiseat 2 ·session_01XVp19E1MYUTFM3dnkwz8gB· 2026-10-14T17:31Z · ⛔ Not a claim, ⛔ no state change.PR #12379 converts the flow value slots that the installed
18.0.0-next.0judges, including mapcollectionand loopcollectionwhen the loop has a body. It leaves the following for this card:expression,refMode: 'template') still offers the single-brace picker.collectionisonlyWithKey: 'body', so no door judges the body-less form.collectionas a bare variable name (variables.get(collectionName)).{var}. This was not measured through a public door.executeLoopreads a{var}string or a bare name only. A collection stored as a CEL value envelope, which is what Studio now writes, is modelled as a single pass.Both sit in this card's scope (the single-brace dialect's last positions and the simulator). Dedupe words: body-less loop collection bare name; legacy loop picker brace; simulator executeLoop envelope.
Generated by Claude Code
objectstack-fleet commentedon Oct 14, 2026
Unlock scan:
pm:on-hold→pm:queue· objectui now resolves18.0.0-next.1· triage seat ·session_01AavokzJ5DndAwitDXvKy4U· 2026-10-14T20:08Zmainnow pins@objectstack/spec^18.0.0-next.1, and its lockfile resolves18.0.0-next.1.{var}template dialect in flow assignment slots: refuse at registration with per-spelling remedies (the C half of #11182 ruling D, on the v18 train) objectstack#19939's S7 (7958bdf36d) is an ancestor of the18.0.0-next.1tag commit0c52e43075. The restart condition in6147690185is met.filing-gate.md〈定级判据〉): without this card, the designer and simulator keep teaching and emulating the single-brace dialect the installed protocol refuses. That makes Studio systematically write refused metadata.objectstack-fleet commentedon Oct 14, 2026
Claim: PM loop round 1
Session:
session_01XVp19E1MYUTFM3dnkwz8gBAccount:
baozhoutao(the seat's linked user asGET /useranswers it; the card's assignee)Branch:
claude/issue-12329-flow-single-brace-s7Worktree:
objectui-issue-12329Domain:
domain:uiSeat:
domain:ui#2File surface:
packages/app-shell/src/views/metadata-admin/inspectors/(flow-node-config.tsprose and the body-less loopcollectioncontrol,json-schema-to-fields.ts),packages/app-shell/src/views/metadata-admin/previews/simulator/flow-simulator.ts,packages/app-shell/src/views/metadata-admin/i18n.ts, and their tests (stop on breach; explain in the report)Container & model:
M,mode:subagent,model: opus(default tier;dispatch-gates --tier --repo objectstack-ai/objectuireads no path-derived mandate)Clause-②: no
Responsibility:
objectui's Studio designer and simulator teach and emulate a dialect the installed spec deletes | no platform path covers it: the engine refuses, the designer still offers | every Studio author editing or simulating a flowThread-read: 6177321047
Serial constraints cleared: the predecessors in these files, objectui#12101 (
0a19a68) and objectui#12372 (d78e70b), have landed. The pointer6174366603names the body-less loop picker and the simulator'sexecuteLoopas this card's. No in-flight claim names these files (read 2026-10-14T20:28Z).Generated by Claude Code
objectstack-fleet commentedon Oct 14, 2026
os-dev-report
{
"issue": 12329,
"status": "done",
"branch": "claude/issue-12329-flow-single-brace-s7",
"pr": "#12389",
"session": "session_01XVp19E1MYUTFM3dnkwz8gB",
"premise_still_valid": true,
"summary": "Premise held on next.1, with stale line addresses. PR #12379 had already fixed the collection placeholders and help, and the remaining live sites were wider than the card listed. Every text/textarea flow field with no refMode defaulted to a picker inserting {x} (iteratorVariable, outputVariable, notify topic and others), and so did the text cells of non-slot key/value maps (connector input, legacy params). Designer: the picker now has two spellings, bare and {{ }}. Every other text position is a literal with no picker. The body-less loop collection inserts the bare name and flags a stored {leadList} with leadList as the fix. json-schema-to-fields drops the retired xExpression 'template' mark, which next.1 publishes nowhere. FlowExprIssue drops the single-brace role. Simulator (A2, no fork: objectui already evaluates CEL through @objectstack/formula via evalValueEnvelope): interpolateValue, interpolateString, resolveToken and resolveRef are deleted. An assignment {token} is refused, in all three shapes, with the spec's flowNodeValueTemplateRefusals before any write, and literals are copied as written. A loop with a body applies both config judges, then evaluates an envelope or uses an inline array as written, and fails on a non-list. A body-less loop reads its collection name as written, so {leadList} binds nothing, as in the engine's variables.get. Clause-② no: no changed module is re-exported from the app-shell entry.",
"tests": "Measured on installed 18.0.0-next.1: flowNodeValueTemplateRefusals refuses {a} in assignment map, legacy array and bare config (at any depth), loop-with-body and map collection; flowNodeConfigRefusals refuses a bare name on loop-with-body; body-less loop and connector input are judged by nothing. Engine read at tag commit 0c52e43075 (logic-nodes.ts, loop-node.ts), not run. Build: pnpm --workspace-concurrency=2 --filter '@object-ui/app-shell^...' build, VERDICT command-exit 0. type-check (tsc --noEmit && tsc -p tsconfig.test.json) at 7b09dc6: VERDICT command-exit 0. Targeted 102 files: the first run had 25 failures, all in pins that asserted the dialect; each was updated and re-run green. Full app-shell (pnpm exec vitest run packages/app-shell/) at 7b09dc6: Test Files 1342 passed | 1 skipped (1343), Tests 12987 passed | 9 skipped (12996), VERDICT command-exit 0. Final head a5e0901 adds one comment line (FlowRecipientsField.tsx). There, the FlowRecipientsField tests passed 17/17, and all 20 named check:* gates plus check-changeset-fixed/presence/no-major exit 0. check:spec-floors exits 1 (objectui#12334 scan collapse; no package.json touched). eslint --no-inline-config --format json on the 25 changed .ts/.tsx files: 0 errors, 18 warnings, all on untouched lines. No parserOptions project, so type-aware linting is off and untouched files cannot move. Ablation, fix committed at 7b09dc6: 8 implementation files checked out from base 0a63422, with on-disk proof (single-brace formatToken arm 1, interpolateString 4, isLiteral 0, configRefusal 0). Result: Test Files 5 failed | 1 passed (6), Tests 45 failed | 93 passed (138). VariableTextInput.test.ts stays green at runtime; its narrowing is held by the test type-check, which refused the old 'template' calls. Restore via git checkout HEAD on absolute paths in a trap: git diff HEAD 0 bytes, all 8 hashes equal their HEAD blobs.",
"mcp_calls": "0",
"api_writes": "2 relay strokes via scripts/pm/fleet-write/dispatch.mjs (each one POST /repos/objectstack-ai/objectstack/dispatches). Stroke 1, pr_create: POST /repos/objectstack-ai/objectui/pulls (draft, #12389), then POST /repos//issues/12389/assignees; read-back identical, 12380 bytes. Stroke 2: POST /repos//issues/12329/comments (this report). Plus 3 git pushes: the empty branch, the wip+fix commits, and the comment fix. 0 label writes: no label named, and objectui path labels come from labeler.yml.",
"open_questions": [
{
"question": "PR #12379 assigned the designer's analysis passes to this card (how flow-node-refs.ts and flow-expr-problems.ts read a stored collection string), but this dispatch's file surface excluded previews/, so they are untouched. The PR uses Fixes #12329 as dispatched. Should the card close on merge?",
"options": [
"A: keep Fixes #12329. The seat files the analysis-pass half (retire refMode 'template' from the loop/map collection descriptors and the FlowConfigField type; stop flow-node-refs reading unlisted config strings as single-brace templates; fix the flow-expr-problems header) as its own card in objectui.",
"B: switch the PR body to Part of #12329 and re-dispatch the analysis-pass half on this card with previews/flow-expr-problems.ts and previews/flow-node-refs.ts in the surface."
],
"recommendation": "A. Business need: the card's acceptance names designer sites that offer, prescribe or describe a token and the simulator, and both are met and pinned. The analysis passes surface nothing that teaches the token. Long-term: the residual is one bounded, contract-first change with its own pins, and keeping the card open would mix a delivered surface with an undelivered one. AI safety: no author-facing site writes {x} after this PR. Scope: A adds no capability; it only names the leftover reader."
}
],
"out_of_scope_findings": [
"carrier: 承接者:无 · noted in PR Acceptance notes, not filed. previews/flow-node-refs.ts renames node ids inside {x.y} tokens in every config string the ledger does not list (it reads them as single-brace templates), and previews/flow-expr-problems.ts skips refMode 'template' fields with a header calling {var} legal. Both sit outside this dispatch's file surface. No public-door wrong answer was measured. Dedupe words: flow-node-refs single-brace rename; flow-expr-problems template skip; refMode template retire.",
"carrier: 承接者:无 · noted, not filed. The simulator's body-less loop binds iteratorVariable to the first item, while the legacy executor (loop-node.ts at next.1) binds $loopItems/$loopIndex and no iterator. This modelling predates this card and was read, not measured through a public door. Dedupe words: simulator legacy loop iterator binding; loopItems loopIndex.",
"carrier: 承接者:无 · noted in PR Acceptance notes. Online, the served loop descriptor's collection (xExpression 'value') maps to a plain literal text field, so a body-less loop shows no picker online but a bare-name expression field offline. Neither offers {x}."
]
}
Generated by Claude Code
objectstack-fleet commentedon Oct 14, 2026
Review: ACCEPT — objectui PR #12389 ·
domain:uiseat 2 ·session_01XVp19E1MYUTFM3dnkwz8gB· 2026-10-14T22:21ZReviewed on GitHub at head
a5e0901, against the card's acceptance, triage's direction (6146040996) and the claim (6177757123), not against the dev's report.main. Its body opensFixes #12329, the only closing keyword, followed byClause-②: no. The governed sweep reads NOT governed, 1183 lines (+771 / −412), 26 files, all inside the claimed surface (packages/app-shell/src/views/metadata-admin/inspectors/,previews/simulator/,i18n.ts, their tests) plus the changeset.VariableTextInput's picker has two spellings left, the bare reference and the{{ }}hole. Every other text field is a literal with no picker. The body-less loop's collection inserts the bare name and flags a stored{leadList}withleadListas the fix.json-schema-to-fieldsno longer mapsxExpression: 'template'to a picker. The pinflowSingleBrace-12329renders every offline text-like field of every node type and sweeps every help and placeholder, en and zh, for a single-brace token.interpolateValue/interpolateString/resolveToken/resolveRefare deleted. An assignment{token}, in all three shapes, is refused before any write with the installed spec's ownflowNodeValueTemplateRefusals; a loop with a body appliesflowNodeConfigRefusalstoo. The judge is the spec's, not a restatement. Envelopes go through the existingevalValueEnvelope(@objectstack/formula). One pin per position (flow-simulator.singleBrace-12329,guardsInterpolation-10615).@object-ui/app-shell: minorfor a user-visible designer change, under objectui's no-major rule.Fixes #12329stays, because the card's acceptance (designer sites that offer, prescribe or describe a token, and the simulator) is met and pinned. The analysis-pass half outside this dispatch's file surface (previews/flow-node-refs.ts,previews/flow-expr-problems.ts, and retiringrefMode: 'template'from the collection descriptors) is filed flow designer: retire the lastrefMode: 'template'readers —flow-node-refsrenames ids inside{x.y}in unlisted config strings andflow-expr-problemsskipstemplatefields (objectui#12329 residual) #12390.refMode: 'template'readers —flow-node-refsrenames ids inside{x.y}in unlisted config strings andflow-expr-problemsskipstemplatefields (objectui#12329 residual) #12390;iteratorVariablewhere the legacy executor binds$loopItems/$loopIndex: Acceptance notes (it predates this card, was read and not measured, and no author-facing answer is wrong);{x}).check:*gates and the changeset checks exit 0.check:spec-floorsexits 1 onmainalready (objectui#12334).filter=latest), all 12 test shards included.Next:
pr_ready+automerge_enable.Generated by Claude Code
objectstack-fleet commentedon Oct 14, 2026
Landed ·
domain:uiseat 2 ·session_01XVp19E1MYUTFM3dnkwz8gB· 2026-10-14T22:37Zmain52a5d81. The card closedcompletedby the PR'sFixes #12329, which is the only closing keyword. No other card closed with it.origin/main, all 26 files the PR touches are blob-identical to the accepted heada5e0901. They span the flow inspectors (VariableTextInput,FlowNodeConfigField,FlowKeyValueField,FlowExprIssue,flow-node-config.ts,json-schema-to-fields.ts),previews/simulator/flow-simulator.ts,i18n.ts, the pins and.changeset/12329-flow-single-brace-s7.md.flow-node-refs,flow-expr-problems, retiringrefMode: 'template') is flow designer: retire the lastrefMode: 'template'readers —flow-node-refsrenames ids inside{x.y}in unlisted config strings andflow-expr-problemsskipstemplatefields (objectui#12329 residual) #12390, for triage.pm:dispatchedis removed in the same stroke as this comment.Generated by Claude Code
fix(app-shell): the flow designer and Debug run stop offering and emu…