Search board info fields and confirm project device deletion

The distribution-board search also matches board number and location as
soon as the boards carry them (distribution-board info card of
feature/print-view); the fields are optional in the filter, so the branch
works with and without them. Deleting a project device now asks for
confirmation like the other delete actions, since the row action is a
small trash icon.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/projects/[projectId]/page.tsx

@@ -476,6 +476,11 @@ export default function ProjectDetailPage() {
     if (!projectId || !project) {
       return;
     }
+    const device = projectDevices.find((item) => item.id === projectDeviceId);
+    const deviceName = device?.displayName || device?.name || "Projektgerät";
+    if (!window.confirm(`Projektgerät „${deviceName}“ wirklich löschen?`)) {
+      return;
+    }
     setIsSaving(true);
     setError(null);
     try {
@@ -1053,7 +1058,7 @@ export default function ProjectDetailPage() {
                 onChange={(query) =>
                   setBoardFilters((current) => ({ ...current, query }))
                 }
-                placeholder="Verteilung oder Etage …"
+                placeholder="Name, Nr., Örtlichkeit oder Etage …"
                 value={boardFilters.query}
               />
               <MultiSelectDropdown

src/frontend/utils/overview-filters.ts

@@ -154,8 +154,16 @@ export function buildSupplyTypeFilterOptions(
   return options;
 }
 
+/**
+ * Board number and location come with the distribution-board info card
+ * (feature/print-view). They are optional here so the filter works with and
+ * without those fields and searches them as soon as the DTO carries them.
+ */
 export function filterDistributionBoards<
-  Board extends Pick<DistributionBoardDto, "name" | "floorId" | "supplyType">,
+  Board extends Pick<DistributionBoardDto, "name" | "floorId" | "supplyType"> & {
+    boardNumber?: string | null;
+    location?: string | null;
+  },
 >(
   boards: readonly Board[],
   filters: DistributionBoardFilters,
@@ -166,6 +174,8 @@ export function filterDistributionBoards<
     (board) =>
       matchesQuery(query, [
         board.name,
+        board.boardNumber,
+        board.location,
         board.floorId ? floorNameById.get(board.floorId) : undefined,
       ]) &&
       matchesSelection(