Force shared Creator Micro HID access

[edwin-zvs]

Summary

• explicitly force hidapi shared mode immediately before every Creator Micro open attempt
• centralize device selection/opening so the TUI and diagnostic use identical behavior
• add a read-only creator-micro probe command that reports open mode and queries firmware version
• document the probe and its non-destructive behavior

Root cause

With Work Louder Input closed and only one Construct TUI active, an out-of-process probe reported that the Creator Micro was already open exclusively. The current TUI was the only remaining user process holding it. Explicitly resetting hidapi's process-global open mode before each attempt prevents that ownership state.

Verification

• cargo check -p construct-cli
• cargo test -p construct-cli creator_micro -- --nocapture (8 passed)
• cargo build
• read-only probe accurately distinguishes the agent sandbox permission denial from out-of-process exclusive ownership

Hardware safety

The probe sends only sys.version and does not change firmware, keymaps, or lighting.