Progress used to be a bare chapter count. It is now a full accountability loop.
- Every chapter records when you opened it, when you completed it, and how long you actually spent - so your progress is real history, not just a checkbox.
- The workspace header now shows an honest time estimate computed from your own recorded pace, replacing the old fixed weeks guess; until enough timing exists it shows your time invested instead of inventing a number.
- Crossing meaningful moments - halfway, finishing a difficulty layer, completing the path - is now celebrated with milestone notices, and each layer shows when a single chapter remains.
- A weekly check-in email summarizes your week (chapters completed, minutes learned, what's next) and nudges you to continue, with one-click unsubscribe. It starts when you generate a path and pauses itself when you have nothing active.
- Your profile's achievements tab now shows real numbers: paths completed, chapters closed, and distinct skills gained.
- My Paths now truly continues your most recently worked-on path, and your data export includes your full learning-path history.
