Select Element interaction and capability decisions

[Amm1rr]

Context

A few Select Element items are intentionally product decisions rather than bugs:

• repeated activation: toggle off, restart selection, or no-op?
• Escape during an active translation: cancel translation, exit interaction mode, or both?
• whether V2 should eventually support PRE / CODE roots.

Current behavior is not considered a release blocker.

Decision to make

Define the expected product behavior before implementation. Any accepted change should preserve existing cancellation/commit contracts and remain consistent across activation paths.

Migrated from former Select Element backlog items SE-BL-01, SE-BL-03, and SE-BL-10.