Add a typed platform package to decouple the frontend from Tauri (#539)

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

apps/yaak-client/components/GrpcProtoSelectionDialog.tsx

@@ -1,4 +1,3 @@
-import { open } from "@tauri-apps/plugin-dialog";
 import type { GrpcRequest } from "@yaakapp-internal/models";
 import { Banner, HStack, Icon, InlineCode, VStack } from "@yaakapp-internal/ui";
 import { useActiveRequest } from "../hooks/useActiveRequest";
@@ -8,6 +7,7 @@ import { pluralizeCount } from "../lib/pluralize";
 import { Button } from "./core/Button";
 import { IconButton } from "./core/IconButton";
 import { Link } from "./core/Link";
+import { platform } from "@yaakapp-internal/platform";
 
 interface Props {
   onDone: () => void;
@@ -45,7 +45,7 @@ function GrpcProtoSelectionDialogWithRequest({ request }: Props & { request: Grp
           color="primary"
           variant="border"
           onClick={async () => {
-            const selected = await open({
+            const selected = await platform.dialog.open({
               title: "Select Proto Files",
               multiple: true,
               filters: [{ name: "Proto Files", extensions: ["proto"] }],
@@ -63,7 +63,7 @@ function GrpcProtoSelectionDialogWithRequest({ request }: Props & { request: Grp
           variant="border"
           color="primary"
           onClick={async () => {
-            const selected = await open({
+            const selected = await platform.dialog.open({
               title: "Select Proto Directory",
               directory: true,
             });