Restore component health progress bars

src/reactor_sim/dashboard.py

@@ -353,7 +353,7 @@ class ReactorDashboard:
             ],
         )
         y = self._draw_section(win, y, "Maintenance", self._maintenance_lines())
-        y = self._draw_section(win, y, "Component Health", self._health_lines())
+        y = self._draw_health_bars(win, y)
 
     def _draw_help_panel(self, win: "curses._CursesWindow") -> None:
         win.erase()
@@ -471,6 +471,31 @@ class ReactorDashboard:
             return [("Active", "None")]
         return [(comp, "IN PROGRESS") for comp in sorted(self.reactor.maintenance_active)]
 
+    def _draw_health_bars(self, win: "curses._CursesWindow", start_y: int) -> int:
+        height, width = win.getmaxyx()
+        inner_width = width - 4
+        if start_y >= height - 2:
+            return height - 2
+        win.addstr(start_y, 2, "Component Health", curses.A_BOLD | curses.color_pair(1))
+        bar_width = max(8, min(inner_width - 18, 40))
+        row = start_y + 1
+        for name, comp in self.reactor.health_monitor.components.items():
+            if row >= height - 1:
+                break
+            label = f"{name:<12}"
+            target = 0.0 if comp.failed else comp.integrity
+            filled = int(bar_width * max(0.0, min(1.0, target)))
+            bar = "#" * filled + "-" * (bar_width - filled)
+            color = 3 if comp.integrity > 0.5 else 2 if comp.integrity > 0.2 else 4
+            win.addstr(row, 4, f"{label}:")
+            bar_start = 4 + len(label) + 1
+            win.addstr(row, bar_start, bar[:bar_width], curses.color_pair(color))
+            percent_text = "FAILED" if comp.failed else f"{comp.integrity*100:5.1f}%"
+            percent_x = min(width - len(percent_text) - 2, bar_start + bar_width + 2)
+            win.addstr(row, percent_x, percent_text, curses.color_pair(color))
+            row += 1
+        return row + 1
+
     def _pump_status(self, pumps: list, index: int) -> str:
         if index >= len(pumps):
             return "n/a"