feat(desktop): device manager, sleep action, board CI selection

[FadyFaheem]

Summary

• add a Device Manager view: inventory of every known board with connection state, firmware version vs catalog, and feature badges
• per-device actions reuse existing safe flows: Open in Deck, inline Rename, Update firmware (guarded flash), Reconnect/Scan, and Disconnect
• add Deck page bottom padding and a Sleep action with wake-on-touch display blanking on supported firmware
• keep CrowPanel DSI/touch active and constrain deck labels to one ellipsized line
• bump Elecrow firmware to 0.1.9 and Waveshare firmware to 0.2.9
• Board CI now builds firmware only for boards whose firmware version changed, and fails when board-specific or shared firmware changes lack a version bump

Notes

• Device Manager is desktop-only and adds no IPC or protocol messages; SemVer helpers were extracted to desktop/src/semver.js and shared with the board catalog.
• Firmware "update available" is derived from the connected hello version vs the catalog version.

Tests

• npm test (202 passing)
• npm run check
• node --test boards/tools/*.test.js
• node boards/tools/build-catalog.js --validate-only

Local firmware builds were unavailable because ESP-IDF is not installed; Board CI builds the version-selected profiles.