feat(workspace): name tonight's first leftover sit-out on the map

[seonghobae]

Product outcome

The ready rehearsal map names tonight's first leftover sit-out after a partial return from existing partGraph evidence so returning parts play without waiting and the leftover part stays out. This is not a come-in, tacet, dropout, tutti, handoff, Fine, last-line breath, a continued sit-out with nobody returning, a new dropout after every original sit-out returns, or a new MIR product.

Exact current identity

• Protected target: develop@749511c3ad4000090048718f685c6bee6b3d2c25.
• Exact current head: f1034348f580da2351558824c0014c31f59f52ca.
• Branch: feat/workspace-first-leftover.

Current exact scope

• firstLeftover admits a named section with at least one own-property sit-out, then a later named section where at least one previously sitting-out named part is own-property active and at least one previously sitting-out named part is still own-property tacet.
• Blank labels, missing graph nodes, inherited is_active, missing is_active, unnamed roles, same-section false-then-true nodes, all-active later sections (tuttis), continued sit-outs with nobody returning, new dropouts after a full original return, and malformed roots fail closed.
• When a role is selected, only a leftover section that includes that named part is shown. Returning parts get play-without-waiting copy; the leftover part gets stay-out copy.
• Ready workspace copy names the next action: play the named section without waiting, stay out of the named section, or confirm who stays tacet after others return before the first section when the leftover is missing.
• AGENTS / CLAUDE / ARCHITECTURE / CHANGELOG and the component contract stay current.
• Doctoring: docs/doctoring/first-leftover.md.

Distinct from adjacent first-X work

• feat(workspace): name tonight's first tutti on the map #1099 first tutti: every named graph node returns after a reduced section.
• feat(workspace): name tonight's first tacet on the map #1097 first tacet: first own-property sit-out.
• feat(workspace): name tonight's first come-in on the map #1098 first come-in: first previously sitting-out named part that becomes active.
• Dropout/handoff PRs: a previously active named part goes tacet, or a new dropout after a full original return.
• This PR owns leftover sit-outs after a partial return. Do not mix.

Merge gate

• Canonical fix(security): establish canonical npm, PDF.js, Nanoid, and Undici baseline #783 is protected develop shipped truth. This branch inherits that JavaScript baseline and does not duplicate or suppress it.
• Keep unmerged until this unchanged exact head has every applicable repository and central CI/build/release/security/SAST/SBOM/supply-chain/coverage/review gate terminal-success, zero valid unresolved findings, and a qualifying independent non-author last-push approval under live protection.
• Queued, pending, skipped-required, cancelled, failed, predecessor-head, protected-base, model-only, self/author, synthetic, or administrative-bypass evidence is not success.
• Do not mix with 🔒 [보안] CLI 무제한 파일 읽기 취약점 수정 #811, test(analysis): govern real YouTube known-stem benchmark #828, feat(workspace): Storybook tokens for rehearsal components #897, or other first-X rehearsal-map PRs.
• Do not self-approve.

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📥 Commits

Reviewing files that changed from the base of the PR and between 749511c and 6984d99.

📒 Files selected for processing (14)

• AGENTS.md
• ARCHITECTURE.md
• CHANGELOG.md
• CLAUDE.md
• apps/desktop/src/features/workspace/Workspace.test.tsx
• apps/desktop/src/features/workspace/Workspace.tsx
• apps/desktop/src/features/workspace/firstLeftover.selected-role.test.ts
• apps/desktop/src/features/workspace/firstLeftover.test.ts
• apps/desktop/src/features/workspace/firstLeftover.ts
• apps/desktop/src/i18n/index.test.ts
• apps/desktop/src/locales/en/common.json
• apps/desktop/src/locales/ko/common.json
• docs/design-system/component-contract.md
• docs/doctoring/first-leftover.md

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[devin-ai-integration]

Note

This report is out of date. Scroll down for Devin Review's latest report on this PR.

Devin Review found 5 potential issues.

[devin-ai-integration]

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Devin Review found 4 new potential issues.

[seonghobae]

@opencode-agent Please perform the independent formal review on exact current head 6984d99294a1439d62ab3283f3b254d968f21999 against protected develop@749511c3ad4000090048718f685c6bee6b3d2c25. Verify the song-wide role/complete graph contract, repeated-label chronology, full-return baseline resets, selected-role behavior including the new keep-searching regression for a newly inactive selected part, and fail-closed duplicate/malformed activity evidence. Submit an authenticated formal APPROVED or CHANGES_REQUESTED review on this exact unchanged head; do not mutate the contributor branch or reuse predecessor-head evidence.