Add profile stats sheet with task and workout analytics

Tapping the profile card opens a full stats sheet showing:
Tasks — completed this week, overdue count, done rate, 7-day bar
chart, open count by Eisenhower quadrant.
Workouts — streak, sets today, today % progress, weekly schedule
grid (dumbbell = scheduled, checkmark = done), active program summary.

KisaniCal/ContentView.swift

@@ -131,6 +131,7 @@ struct ContentView: View {
 
                 SettingsView()
                     .environmentObject(workoutVM)
+                    .environmentObject(taskVM)
                     .tag(4)
                     .tabBarInset()
             }
@@ -168,7 +169,7 @@ struct ContentView: View {
             case 1:  CalendarView().environmentObject(taskVM).environmentObject(workoutVM)
             case 2:  MatrixView().environmentObject(taskVM)
             case 3:  WorkoutView().environmentObject(workoutVM)
-            case 4:  SettingsView().environmentObject(workoutVM)
+            case 4:  SettingsView().environmentObject(workoutVM).environmentObject(taskVM)
             default: TodayView().environmentObject(taskVM).environmentObject(workoutVM)
             }
         }