docs/claude/probe-readings.md

@@ -424,7 +424,7 @@ Two lines of the self-check output are assertions in disguise:
   the group, because `hold_pinned_window()` prefers a member that has moved since `pinned_stated_`
   — that is how it tells a gesture from its own echo — so a fit that wrote the group alone reads
   back as the zoomed range one frame later.
-- `[layout-probe] <action> rows=N buttons=B done=D done_box=[x,y,WxH] rows_y=[..] close=[..] add=[..] traces=[..] cells=[..] colweights=[..]`
+- `[layout-probe] <action> rows=N buttons=B done=D done_box=[x,y,WxH] rows_y=[..] close=[..] add=[..] resize=[..] traces=[..] side_w=S cells=[..] colweights=[..]`
   `side_w` is the sidebar column's width and **must be its own request (280), never 0**: it read 0 while
   the divider sat at the window's right edge, which is a panel that is not there. It was 280 during the
   first frames and 0 once the window had settled, so read it from a `placed` line rather than the first.

src/layout_store.cpp

@@ -4,6 +4,7 @@
 #include "layout_store.hpp"
 
 #include <algorithm>
+#include <cmath>
 #include <cstdint>
 #include <cstdio>
 #include <cstdlib>
@@ -619,7 +620,7 @@ bool load_layout(const std::string& path, LayoutState& out) {
         }
       } else if (key == "width") {
         const double w = std::strtod(value.c_str(), nullptr);
-        if (w > 0.0) st.rows.back().width = w;
+        if (std::isfinite(w) && w > 0.0) st.rows.back().width = w;
       }
     } else if (section == Section::Math && !st.math.empty()) {
       MathChannel& m = st.math.back();

src/ui_tour.cpp

@@ -442,7 +442,7 @@ struct TourStep {
 constexpr TourStep kTourSteps[] = {
     {"plot", nullptr, "The plot",
      "Every signal you have switched on is drawn here, all plots sharing one time axis. The wheel "
-     "zooms, a drag pans, and a right-click on a row opens that plot's own menu.",
+     "zooms, a drag pans, and a right-click on a plot opens that plot's own menu.",
      &App::area_overlay},
     {"badges", nullptr, "The badges",
      "Setup is reached by the thing it configures. A badge per signal opens that signal's colour, "