fix(CommandLauncher): redirect to dashboard when executing commands from preview routes

NIP-19 preview routes (/nevent..., /npub..., etc.) don't render the
window system, so commands executed there appeared to do nothing.
Now detects preview routes and navigates to the dashboard before
creating the window, so the command actually takes effect.

src/components/CommandLauncher.tsx

@@ -2,6 +2,7 @@ import { useEffect, useState } from "react";
 import { Command } from "cmdk";
 import { useAtom } from "jotai";
 import { useLiveQuery } from "dexie-react-hooks";
+import { useNavigate, useLocation } from "react-router";
 import db from "@/services/db";
 import { useGrimoire } from "@/core/state";
 import { manPages } from "@/types/man";
@@ -11,6 +12,19 @@ import { Dialog, DialogContent, DialogTitle } from "@/components/ui/dialog";
 import { VisuallyHidden } from "@/components/ui/visually-hidden";
 import "./command-launcher.css";
 
+/** Check if current path is a NIP-19 preview route (no window system) */
+function isNip19PreviewRoute(pathname: string): boolean {
+  // NIP-19 preview routes are single-segment paths starting with npub1, note1, nevent1, naddr1
+  const segment = pathname.slice(1); // Remove leading /
+  if (segment.includes("/")) return false; // Multi-segment paths are not NIP-19 previews
+  return (
+    segment.startsWith("npub1") ||
+    segment.startsWith("note1") ||
+    segment.startsWith("nevent1") ||
+    segment.startsWith("naddr1")
+  );
+}
+
 interface CommandLauncherProps {
   open: boolean;
   onOpenChange: (open: boolean) => void;
@@ -23,6 +37,8 @@ export default function CommandLauncher({
   const [input, setInput] = useState("");
   const [editMode, setEditMode] = useAtom(commandLauncherEditModeAtom);
   const { state, addWindow, updateWindow } = useGrimoire();
+  const navigate = useNavigate();
+  const location = useLocation();
 
   // Fetch spells with aliases
   const aliasedSpells =
@@ -107,6 +123,12 @@ export default function CommandLauncher({
       });
       setEditMode(null); // Clear edit mode
     } else {
+      // If on a NIP-19 preview route (no window system), navigate to dashboard first
+      // The window will appear after navigation since state persists
+      if (isNip19PreviewRoute(location.pathname)) {
+        navigate("/");
+      }
+
       // Normal mode: create new window
       addWindow(
         recognizedCommand.appId,