move blueprints out of the sidebar into Ctrl+C / Ctrl+V dialogs

The blueprint panel is gone; the side panel column now holds the selected
building panel alone at full height. Saving is Ctrl+C on the current
selection, and picking one for placement is a new frameless modal card grid
opened with Ctrl+V, or handed to directly after a confirmed save.

BlueprintPanel sheds its widget half and becomes BlueprintLibrary: the list,
its disk round-trip, capture, and the T hotkey, with no widget of its own.
MainWindow owns it and drives both dialogs, because ModalPauseScope needs a
GameWorldView and only MainWindow has one. Both handlers hold a single pause
scope and a single dim scope across the save-to-select handoff, so the dim
does not blink and the simulation is not resumed in between.

The two facts a card derives -- the per-type contents summary and the plain
cost total -- go into lib/sim next to captureBlueprintFromSelection so they
can be unit tested; src/ui is off the test include path. They are kept apart
from GameWorldView's placement total, which excludes locked types and
rotate-in-place targets and is a different number by design.

A card's delete icon is a sibling of the card body rather than one of its
children: Qt disables a widget's children along with it, and the delete has
to stay live on an unaffordable card.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JcReq7hVk4KUPhTDKWAG7K

src/lib/sim/BuildingConfig.cpp

@@ -3,10 +3,14 @@
 
 #include <algorithm>
 #include <climits>
+#include <cstddef>
+#include <map>
 
 #include "BeltSystem.h"
 #include "Building.h"
+#include "BuildingsConfig.h"
 #include "BuildingSystem.h"
+#include "DisplayName.h"
 #include "Simulation.h"
 
 namespace
@@ -49,6 +53,21 @@ std::optional<SelectedBuilding> resolvePlaceable(const Simulation& sim, Building
     resolved.bodyCells = building ? &building->bodyCells : &site->bodyCells;
     return resolved;
 }
+
+// Position of a building type in buildings.toml, which is the order the build button
+// bar lays out its buttons (REQ-UI-BUILD-BAR) and so the tie-break order for a
+// blueprint's contents line. A type with no config entry sorts after every known one.
+std::size_t configOrderIndex(BuildingType type, const BuildingsConfig& buildings)
+{
+    for (std::size_t i = 0; i < buildings.buildings.size(); ++i)
+    {
+        if (buildings.buildings[i].type == type)
+        {
+            return i;
+        }
+    }
+    return buildings.buildings.size();
+}
 } // namespace
 
 std::optional<BuildingConfig> readBuildingConfig(const Simulation& sim, BuildingId id)
@@ -166,3 +185,56 @@ bool selectionHasPlaceableBuilding(const Simulation&              sim,
     }
     return false;
 }
+
+std::vector<BlueprintContentEntry> summarizeBlueprintContents(
+    const Blueprint& blueprint, const BuildingsConfig& buildings)
+{
+    std::map<BuildingType, int> counts;
+    for (const BlueprintBuilding& building : blueprint.buildings)
+    {
+        ++counts[building.type];
+    }
+
+    // The config index is carried through the sort so the comparator stays a strict
+    // total order; the enum value is the final tie-break, which only two config-less
+    // types could ever reach.
+    struct RankedType
+    {
+        BuildingType type;
+        int          count;
+        std::size_t  order;
+    };
+    std::vector<RankedType> ranked;
+    ranked.reserve(counts.size());
+    for (const std::pair<const BuildingType, int>& entry : counts)
+    {
+        ranked.push_back({entry.first, entry.second,
+                          configOrderIndex(entry.first, buildings)});
+    }
+    std::sort(ranked.begin(), ranked.end(),
+              [](const RankedType& left, const RankedType& right)
+    {
+        if (left.count != right.count) { return left.count > right.count; }
+        if (left.order != right.order) { return left.order < right.order; }
+        return static_cast<int>(left.type) < static_cast<int>(right.type);
+    });
+
+    std::vector<BlueprintContentEntry> summary;
+    summary.reserve(ranked.size());
+    for (const RankedType& entry : ranked)
+    {
+        summary.push_back({toDisplayName(buildingTypeId(entry.type)), entry.count});
+    }
+    return summary;
+}
+
+int computeBlueprintCost(const Blueprint& blueprint, const BuildingsConfig& buildings)
+{
+    int total = 0;
+    for (const BlueprintBuilding& building : blueprint.buildings)
+    {
+        const BuildingDef* def = buildings.findBuildingDef(building.type);
+        if (def) { total += def->cost; }
+    }
+    return total;
+}