Restore live controller feedback and motor visualization

[DanteFroMGiti]

Summary

• unify connection status and transport controls with one rounded visual style
• propagate pressed-control glow to every controller preview
• restore live motor telemetry on vibration settings and after engine restart
• align profile detail meters to a shared starting column
• give each physical motor its own side-specific glow: cyan above and purple below
• scale both glow zones from the live level of the matching left or right motor

Validation

• QT_QPA_PLATFORM=offscreen pytest -q — 317 passed
• python3 -m py_compile ui.py
• git diff --check
• CI passed on Python 3.10 and 3.13

[sendement]

Thanks for the fix — this is a real regression I introduced myself with the page-visibility telemetry gating, and it's good to see it addressed with a shared fresh_visual_snapshot() helper. Tests pass here too (316/316). A few things worth a look before merging:

• Trigger squeeze text no longer shows (ui.py ~2151, HomePage._poll_meter): the loop that used to merge an engaged trigger's held pressure into feedback (main branch ui.py:2116-2118) is gone. The controller graphic still glows for L2/R2 via held, but the feedback label's text (e.g. "Left Trigger 80%") never mentions it anymore, since the engine doesn't populate feedback for trigger virtual codes on its own. Picture and text now disagree whenever a trigger preset is engaged.
• ButtonHapticPage._poll_feedback still hand-rolls the staleness check instead of using the new fresh_visual_snapshot() helper this PR wires into every other page (Home/Triggers/Advanced/Led). Minor, but it leaves the same ".5s freshness" logic in two places — a future tweak to the helper won't reach this one page.
• HomePage.motor_level_state is now write-only — AdvancedPage was its only reader and this PR switches it to read engine.level_queue directly instead, but HomePage still updates the now-unused attribute every poll. Harmless, just dead state worth trimming while you're in here.

Happy to take a look again once these are in.