VerbListView used a local @State selectedLevel that reset whenever
the user left the tab and was disconnected from Practice's verb
sourcing. PracticeSessionService reads UserProgress.selectedVerbLevels;
the Verbs tab now does the same.
Level menu becomes multi-select (toggle each level in/out, mirrors
SettingsView's pattern). "All Levels" enables every level; tapping
again on a level removes it from the active set. Picking "All"
while everything is already on is a no-op.
Filter logic loops over the active level set and admits a verb if
any active level matches via VerbLevelGroup.matches.
Active-filter chip shows "Basic", "Elementary", etc. when one level
is on, or "N levels" when multiple are on. Tapping the chip resets
to all-levels.
Empty set is treated as "no filter applied" on the Verbs list, but
setAllLevels(enabled: false) falls back to [.basic] rather than an
empty set — Practice treats empty as "no verbs", so we guard against
leaving the user with an empty pool.
Practice already reads UserProgress.selectedVerbLevels, so changes
made in the Verbs tab now flow into Practice automatically. No
Practice-side code changes needed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Trey T
164a0a1bb7