Open circuit protection from grid cell

src/app/globals.css

@@ -1052,6 +1052,20 @@ a.kpi:hover {
   cursor: text;
 }
 
+.tree-grid .cell-protection-trigger {
+  color: var(--color-primary);
+  cursor: pointer;
+  font-weight: 600;
+  transition:
+    background-color 0.12s ease,
+    box-shadow 0.12s ease;
+}
+
+.tree-grid .cell-protection-trigger:hover {
+  background: #eaf6f0;
+  box-shadow: inset 0 0 0 1px var(--color-signal);
+}
+
 .tree-grid .device-drag-handle {
   cursor: grab;
 }

src/frontend/components/circuit-tree-editor.tsx

@@ -4210,10 +4210,15 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                         row.circuit &&
                         (duplicateEquipmentIdentifierCircuitIds.has(row.circuit.id) || hasDraftIdentifierConflict)
                     );
+                    const isProtectionTrigger = Boolean(
+                      column.key === "protectionSummary" &&
+                        row.circuit &&
+                        row.rowType !== "deviceRow"
+                    );
                     return (
                       <td
                         key={column.key}
-                        className={`${column.numeric ? "num" : ""} ${cell.editable ? "cell-editable" : ""} ${isSelected ? "cell-selected" : ""} ${hasIdentifierConflict ? "cell-invalid" : ""} ${
+                        className={`${column.numeric ? "num" : ""} ${cell.editable ? "cell-editable" : ""} ${isProtectionTrigger ? "cell-protection-trigger" : ""} ${isSelected ? "cell-selected" : ""} ${hasIdentifierConflict ? "cell-invalid" : ""} ${
                           Boolean(row.device) && column.key === "displayName" && (row.rowType === "deviceRow" || row.rowType === "circuitCompact")
                             ? "device-drag-handle"
                             : ""
@@ -4231,7 +4236,9 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                              : ""
                          }`}
                         title={
-                          column.key === "equipmentIdentifier" &&
+                          isProtectionTrigger
+                            ? "Schutzgerät bearbeiten"
+                            : column.key === "equipmentIdentifier" &&
                           row.circuit &&
                           (row.rowType === "circuitCompact" ||
                             row.rowType === "circuitSummary" ||
@@ -4306,6 +4313,10 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                           if (isGridEditorControlTarget(event.target)) {
                             return;
                           }
+                          if (isProtectionTrigger) {
+                            setProtectionEditorCircuit(row.circuit!);
+                            return;
+                          }
                           if (cell.editable) {
                             handleRowSelectionClick(row, column.key, {
                               ctrlKey: event.ctrlKey,
@@ -4431,15 +4442,6 @@ export function CircuitTreeEditor(props: { projectId: string; circuitListId: str
                   >
                     {row.circuit && row.rowType !== "deviceRow" ? (
                       <>
-                        <button
-                          type="button"
-                          tabIndex={-1}
-                          onClick={() =>
-                            setProtectionEditorCircuit(row.circuit!)
-                          }
-                        >
-                          Schutzgerät
-                        </button>
                         <button
                           type="button"
                           tabIndex={-1}