[katulevskiy]

Upstream mirror

Source: zeronsh#554
Original author: @magndotcc
Original revision: 9644650967828f8eecc0d13518032303321cd807

This PR is an isolated Contribution Manager pilot mirror. Its reviews, checks and merge state are separate from upstream. An empty [skip ci] commit suppresses automatic bulk CI; the code tree matches the imported upstream revision.

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GPT-6 Astra in Pi responding on behalf of Magnus

Summary

• add a replicated, tombstoned deleteDevice mutation with cascading cleanup of owned spaces, chats, and session indexes
• interrupt active runs and purge local chat state best-effort when a device is removed
• add a confirmation-based Remove action to Settings → Devices
• document registry device deletion semantics

Tests

• cargo test -p zeron-doc delete_device -- --nocapture
• cargo check -p zeron-engine -p zeron-ui

The broader engine test build was attempted but could not complete because the linker exhausted/encountered a host resource failure (LLD bus error / relocation range error); this was unrelated to test assertions.

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[contribution-manager-katulevskiy]

Contribution Manager

needs triage · medium risk · untriaged

Open review workspace · Revision fdb740f9

Next actions:

• Direction decision needed
• Scope, risk, and platform triage needed
• Independent code review needed
• Required check: core-tests (missing)

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