v84 · 2026-11-07

• The page now opens in Basic: the map, the four parts of the robot (Localize, Perceive, Plan, Control) with their
  main settings, one plot and three metrics. Advanced (top right, or View → Show) brings back every tab, setting
  and plot, the event log and Runs, and the page remembers your choice. Nothing is out of reach in Basic: when a search
  result, a layout or a shared link needs something Basic hides, the page switches to Advanced and says so, and each
  Basic tab ends with how many more settings Advanced has.
• Analyze is now Loop analysis, opened from the top of the Control tab ("Analyze this loop →") or with the A key.
  It says what it shows, has a "← Back to the simulator" button, and its side panel keeps only Control and Vehicle,
  the two tabs it reads. Lesson and chapter links to it work as before.
• A new first group in Learn, Foundations: ten short lessons for an engineering undergraduate, one idea each (the
  loop, odometry, the Kalman filter, uncertainty, lidar mapping, the costmap, A*, pure pursuit, delay, people). Start
  here's first pass is now these ten.
• Every lesson's derivations are folded under Show the math, so the text reads without them; open it when you want
  the formulas. Reading times no longer count the folded math. Each group says the level it is written at, and the
  lessons that assume the most are marked advanced in the list.
• Buttons now come in three sizes that say what they do: one large filled button for the main action (Run; Start with
  lesson N in Learn), one size for ordinary actions, including each lesson's experiment buttons, and small buttons only
  inside dense rows such as the telemetry dock and the Runs list. Close (×) and other icon buttons are square and the
  same size everywhere, actions that change the lab (All on / All off beacons, Forget the previous run, Pin, Reset a
  lesson, Copy link) are buttons rather than underlined text, and on phones the controls are a little larger for touch.
• While a lesson is open, the telemetry shows the event log and every metric even in Basic, because the lessons point at
  them; a Foundations lesson never switches the page to Advanced.