Make service rows reorderable

[edwin-zvs]

Summary

• persist a stable position for service rows while keeping services in their existing top-level region
• add service.move IPC and wire terminal Shift+move plus web Shift+Arrow/drag reordering
• preserve legacy alphabetical order until the first move materializes positions, and preserve order across service edits
• document the cross-client ordering rule in spec 0195

Verification

• cargo check --workspace --all-targets
• cargo test -p construct-daemon service_reorder_materializes_and_preserves_positions
• cargo test -p construct-protocol service_protocol_tests
• cargo test -p construct-cli services_render_in_persisted_position_order
• embedded web JavaScript syntax compile via Node
• cargo build --workspace