refactor(helper): drop stderr from response

[Alex Shabalin (alex-sparus)]

Summary

• removing unused field from the helper protocol

internal code C2.1

Test Plan

• Manual testing of a CI-build artifact

Docs

• Docs updated (companion PR in darkmatter/nixmac-web: #___)
• No docs update needed

[Alex Shabalin (alex-sparus)]

• feat(helper)!: wire reconciliation into startup and apply feat(helper)!: wire reconciliation into startup and apply #636
• feat(helper): idempotent GUI reconciliation function feat(helper): idempotent GUI reconciliation function #635
• feat(helper): service-management adapter and primitives feat(helper): service-management adapter and primitives #620
• feat(helper)!: single-slot state machine and frozen control surface feat(helper)!: single-slot state machine and frozen control surface #619
• refactor(helper): drop stderr from response refactor(helper): drop stderr from response #616 👈
• fix(helper)!: drop claimed identity, version the protocol fix(helper)!: drop claimed identity, version the protocol #615
• fix(helper): validate socket peers by code signature fix(helper): validate socket peers by code signature #597
• main

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This stack of pull requests is managed by jj-ryu.

[darkmatter]

🎨 Storybook preview

Open Storybook preview

Updated for f2cab13

[github-actions]

	Warnings
⚠️	No Linear issue ID found in this PR's title, description, or branch name (expected something like ENG-123). Add one so this work is traceable in Linear, or add #no-linear to the PR description to acknowledge it's intentionally untracked.
⚠️	PR is marked WIP / draft — do not merge until ready for review.

📋 PR Overview

Lines changed	48 (+19 / -29)
Files	0 added, 2 modified, 0 deleted
Draft / WIP	yes
Has Test Plan	yes
Linear issue	no
No Test Plan Needed	no
New UI components	no
New Storybook stories	no
New Rust modules	no
New TS source files	no
New tests	no
package.json touched	no
Cargo.toml touched	no
Infra / CI touched	no

🔬 Coverage

Report	Lines	Statements	Functions	Branches
apps/native/coverage/coverage-summary.json	35.5%	35.1%	30.6%	29.4%

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