Hide browser shortcuts outside the desktop app (#2116)

* fix: hide browser pin on non-Electron web

Browser is desktop-only, but the pinned shortcut bar still rendered a
New browser pin on web where createBrowser is a silent no-op.

Skip browser pins in usePinnedLaunchers when not Electron, and drop
browser from default pinned targets so new users only get terminal.

* fix(app): preserve browser pin defaults on desktop

Keep platform availability in the pinned-target policy so regular web hides browser shortcuts without changing Electron defaults.

---------

Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>

packages/app/src/workspace-pins/launch.tsx

@@ -7,9 +7,14 @@ import {
   resolveTerminalProfiles,
 } from "@getpaseo/protocol/terminal-profiles";
 import { getProviderIcon } from "@/components/provider-icons";
+import { getIsElectron } from "@/constants/platform";
 import { useDaemonConfig } from "@/hooks/use-daemon-config";
 import type { Theme } from "@/styles/theme";
-import { pinnedTargetKey, type PinnedTabTarget } from "@/workspace-pins/target";
+import {
+  isPinnedTargetAvailable,
+  pinnedTargetKey,
+  type PinnedTabTarget,
+} from "@/workspace-pins/target";
 import { usePinnedTargetsStore } from "@/workspace-pins/store";
 
 export interface ResolvedPin {
@@ -64,6 +69,9 @@ export function usePinnedLaunchers({ serverId, onLaunch }: UsePinnedLaunchersInp
   return useMemo(() => {
     const resolved: ResolvedPin[] = [];
     for (const target of pinned) {
+      if (!isPinnedTargetAvailable(target, { isElectron: getIsElectron() })) {
+        continue;
+      }
       if (target.kind === "draft") {
         resolved.push({
           key: pinnedTargetKey(target),