Navigation & sidebar feedback:
- Show legacy pages optimistically on pointerdown + CSS :active so the
sidebar reacts instantly instead of waiting for the click/router cycle.
- Defer heavy per-page init via requestIdleCallback so a page becomes
scrollable before its init work runs.
Scroll smoothness:
- Cache particle canvas dimensions (no forced reflow per navigation).
- Pause particle + worker-orb canvas redraws during active scroll so the
scroll gets the full frame budget.
- content-visibility:auto on discover shelves and search/wishlist/library
list items to skip off-screen layout.
Dashboard:
- Run the independent initial loads in parallel (Promise.all) instead of
six sequential awaits, collapsing the reflow cascade.
Settings:
- Wire input listeners once instead of rescanning the ~960-node subtree
on every visit.
- Suppress auto-save while the form is programmatically populated on load,
fixing a spurious full save (4 POSTs + backend service re-init) that
fired on every Settings visit.
Reduce Visual Effects = full performance mode:
- Also halts particles, worker orbs and all filters; hides the static
sidebar aura circles that looked broken without their blur/animation.
Global search bar hidden on settings/help/issues/import pages.
