Use shared modals and combine selected-day actions

README.md

@@ -60,15 +60,19 @@ right. It stacks on narrow screens and shows an initial if the avatar is unavail
 
 Signed-in users can create manual, count, or task habits, choose a recurrence and
 color, log today’s progress, and inspect their real calendars. Completed-versus-due
-counts exclude days off. Inline controls beside habit headings edit the name,
+counts exclude days off. Controls beside habit headings open a modal to edit the name,
 tracking method, schedule, color, count target/unit, and unfinished-count carryover.
-Each task can be renamed, rescheduled, or deleted in place; Add task also supports
+Each task can be renamed, rescheduled, or deleted in a modal; Add task also supports
 its own recurrence. Both habit and task schedules support daily, selected weekdays,
 day intervals, and week intervals with an editable start date and weekday.
-Archive asks for confirmation in place and preserves earlier history.
-**Archived habits** opens the archive, with history inspection and restoration
-starting today. Task deletion still uses an in-place confirmation. Tasks
+Archive asks for confirmation in a modal and preserves earlier history.
+**Archived habits** opens the archive modal, with history inspection and restoration
+starting today. Task deletion uses the same modal confirmation. Tasks
 remain manageable on days off, while their checkboxes stay disabled.
+Settings, sharing, new habits, and historical check-ins also open in native dialogs.
+Dialogs keep the background inactive, contain keyboard focus, support Escape and
+backdrop dismissal, and return focus to their opener. Long content scrolls beneath
+a fixed header; closing is disabled during saves.
 Mutations are saved through the authenticated API; failed
 saves retain the recorded values and allow retry. Account and calendar failures
 have retry states. The dashboard refreshes on window focus and every minute while