feat(api): owner card move route using the caller's own token

src/app/api/owner/cards/[id]/move/route.ts

@@ -0,0 +1,69 @@
+import { getServerPb } from "@/lib/pb/server";
+import { requireSession } from "@/lib/auth/session";
+import { AccessError } from "@/lib/auth/access";
+import { jsonError, jsonOk } from "@/lib/http/json";
+import type { CardRecord } from "@/lib/pb/types";
+
+/**
+ * PATCH /api/owner/cards/:id/move — the owner drops a card in a new place.
+ *
+ * Unlike the /api/client/* routes, this one uses the caller's OWN PocketBase
+ * token, not a superuser's. The owner-only write rule from Plan 1a is what
+ * authorises the update, so a client manager reaching this route is refused by
+ * the database even though the handler itself is simple.
+ *
+ * That is why there is no field whitelist here: PocketBase is already
+ * enforcing who may write. Only the two positional fields are forwarded
+ * regardless, so a stray body field cannot ride along.
+ */
+export async function PATCH(
+  request: Request,
+  context: { params: Promise<{ id: string }> }
+): Promise<Response> {
+  try {
+    const session = await requireSession();
+    const { id } = await context.params;
+
+    if (session.role !== "owner") {
+      return jsonError("Card not found", 404);
+    }
+
+    let body: unknown;
+    try {
+      body = await request.json();
+    } catch {
+      return jsonError("Invalid request body", 400);
+    }
+
+    const record = body as Record<string, unknown> | null;
+    const column = record?.column;
+    const position = record?.position;
+
+    if (typeof column !== "string" || !column) {
+      return jsonError("A destination column is required", 400);
+    }
+    if (typeof position !== "number" || !Number.isFinite(position)) {
+      return jsonError("A numeric position is required", 400);
+    }
+
+    const pb = await getServerPb();
+
+    const updated = await pb
+      .collection("cards")
+      .update<CardRecord>(id, { column, position });
+
+    return jsonOk({
+      card: {
+        id: updated.id,
+        column: updated.column,
+        position: updated.position,
+      },
+    });
+  } catch (error) {
+    if (error instanceof AccessError) {
+      return jsonError(error.message, error.status);
+    }
+    console.error("[owner-move] failed", error);
+    return jsonError("Could not move the card", 500);
+  }
+}