Add reproduction for Schedule issue

[fubhy]

Reproduction only

This PR adds reproduction tests only. No implementation fix is included. CI is expected to fail until the underlying issue is fixed.

Covered audit issues

1. core-s-z-testing-schedule-during-reversed: during recurrence is reversed

Module: Schedule

Expected contract: during(duration) must recur while elapsed time is within the supplied duration and complete after that duration.

Observed result: true instead of false

Reproduction command:

pnpm test --run packages/effect/test/Schedule.test.ts -t "during recurs while the duration has not elapsed"

[changeset-bot]

🦋 Changeset detected

Latest commit: 18b3f1e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 30 packages

Name	Type
effect	Patch
@effect/opentelemetry	Patch
@effect/platform-browser	Patch
@effect/platform-bun	Patch
@effect/platform-deno	Patch
@effect/platform-node-shared	Patch
@effect/platform-node	Patch
@effect/vitest	Patch
@effect/ai-anthropic	Patch
@effect/ai-openai-compat	Patch
@effect/ai-openai	Patch
@effect/ai-openrouter	Patch
@effect/atom-react	Patch
@effect/atom-solid	Patch
@effect/atom-vue	Patch
@effect/sql-clickhouse	Patch
@effect/sql-d1	Patch
@effect/sql-libsql	Patch
@effect/sql-mssql	Patch
@effect/sql-mysql2	Patch
@effect/sql-pg	Patch
@effect/sql-pglite	Patch
@effect/sql-sqlite-bun	Patch
@effect/sql-sqlite-do	Patch
@effect/sql-sqlite-node	Patch
@effect/sql-sqlite-react-native	Patch
@effect/sql-sqlite-wasm	Patch
@effect/docgen	Patch
@effect/doctest	Patch
@effect/openapi-generator	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[pullfrog]

✅ No new issues found.

Reviewed changes — one reproduction test for the Schedule.during completion-condition reversal.

• Schedule.test.ts: add "constructors" → "during recurs while the duration has not elapsed" — a clean reproduction calling Schedule.during("1 second") at timestamp 0 and asserting the step is not yet completed.

The test correctly surfaces the bug at packages/effect/src/Schedule.ts:755 where meta.elapsed > durationMillis is inverted — the schedule immediately completes instead of recurring.

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[pullfrog]

✅ No new issues found.

Reviewed changes — a one-line branch swap in Schedule.during so it recurs while the duration is within bounds and completes when it elapses, plus a changeset.

• Schedule.ts: fix inverted recurrence condition — swapped the then/else arms of meta.elapsed > durationMillis so the schedule completes (Cause.done) when elapsed exceeds the duration and recurs (effect.succeed) while within it.
• .changeset/fix-schedule-during.md — new patch-level changeset for the fix.

The reproduction test from the prior commit now passes: Schedule.during("1 second") at timestep 0 correctly reports not-completed.

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[github-actions]

Bundle Size Analysis

Generated from PR build output; treat the content below as untrusted.

File Name	Current Size	Previous Size	Difference
basic.ts	6.65 KB	6.65 KB	0.00 KB (0.00%)
batching.ts	9.44 KB	9.44 KB	0.00 KB (0.00%)
brand.ts	6.33 KB	6.33 KB	0.00 KB (0.00%)
cache.ts	10.20 KB	10.20 KB	0.00 KB (0.00%)
config.ts	20.34 KB	20.34 KB	0.00 KB (0.00%)
differ.ts	19.95 KB	19.95 KB	0.00 KB (0.00%)
http-client.ts	21.04 KB	21.04 KB	0.00 KB (0.00%)
logger.ts	10.35 KB	10.35 KB	0.00 KB (0.00%)
metric.ts	8.58 KB	8.58 KB	0.00 KB (0.00%)
optic.ts	7.34 KB	7.34 KB	0.00 KB (0.00%)
pubsub.ts	14.49 KB	14.49 KB	0.00 KB (0.00%)
queue.ts	11.15 KB	11.15 KB	0.00 KB (0.00%)
schedule.ts	10.33 KB	10.33 KB	0.00 KB (0.00%)
schema-class.ts	18.88 KB	18.88 KB	0.00 KB (0.00%)
schema-fromJsonSchemaDocument.ts	28.69 KB	28.69 KB	0.00 KB (0.00%)
schema-representation-roundtrip.ts	25.01 KB	25.01 KB	0.00 KB (0.00%)
schema-string-transformation.ts	13.01 KB	13.01 KB	0.00 KB (0.00%)
schema-string.ts	10.66 KB	10.66 KB	0.00 KB (0.00%)
schema-template-literal.ts	14.87 KB	14.87 KB	0.00 KB (0.00%)
schema-toArbitraryLazy.ts	21.67 KB	21.67 KB	0.00 KB (0.00%)
schema-toCodeDocument.ts	24.10 KB	24.10 KB	0.00 KB (0.00%)
schema-toCodecJson.ts	18.93 KB	18.93 KB	0.00 KB (0.00%)
schema-toEquivalence.ts	18.74 KB	18.74 KB	0.00 KB (0.00%)
schema-toFormatter.ts	18.61 KB	18.61 KB	0.00 KB (0.00%)
schema-toJsonSchemaDocument.ts	22.36 KB	22.36 KB	0.00 KB (0.00%)
schema-toRepresentation.ts	19.28 KB	19.28 KB	0.00 KB (0.00%)
schema.ts	18.14 KB	18.14 KB	0.00 KB (0.00%)
stm.ts	12.13 KB	12.13 KB	0.00 KB (0.00%)
stream.ts	9.38 KB	9.38 KB	0.00 KB (0.00%)