Desktop hardening 2026-07-18

Desktop hardening snapshot (2026-07-18)

Commit: d06ab910b014a09f38bcb6546f07cecb99b93446
Branch: work/desktop-hardening-on-develop
PR: #1

Included

• Provider AbortSignal cancellation
• Desktop IPC domain split + update-handlers
• Stream ownership/cancel + security guards
• channel-manifest 1.1 + PROJECT_HANDOFF docs
• Local e2e smoke scripts

Artifacts

• Source tag only in this environment (NSIS not produced on Node 24 local builder)
• See .pipeline/release-traceability.md for local file sha256

Verify

node --test packages/desktop/config/*.test.js
node --test scripts/desktop-ipc-handlers.test.mjs
node scripts/desktop-local-e2e-smoke.cjs