real forms across the plugin, so enter submits instead of doing nothing

connection settings, add/move/rename/options dialogs and daemon settings all
put their fields in a div, so the button was the only way to submit and enter
silently did nothing — a keyboard trap wearing a layout. wrapped each in a
<form onSubmit>, made every non-submit button in those forms type="button"
(test port, update blocklist, discard, cancel, remove-file, known-dir
shortcuts), and dropped RenameDialog's manual onKeyDown enter check now that
the form handles it natively. the toolbar's filter box is left alone — it has
no submit action.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

web/ConnectionView.tsx

@@ -1,4 +1,5 @@
 import type { ServiceConnection } from 'officerdev';
+import type { FormEvent } from 'react';
 import { useEffect, useState } from 'react';
 import { CheckCircle2, Loader2, Plug, Trash2, TriangleAlert } from 'lucide-react';
 import { Button } from '@/components/ui/button';
@@ -89,7 +90,8 @@ export const ConnectionView = () => {
     setShowAdvanced(!!connection?.username);
   }, [connection?.id]);
 
-  const submit = async () => {
+  const submit = async (ev?: FormEvent) => {
+    ev?.preventDefault();
     setError('');
     try {
       await save.mutateAsync({ url: url.trim(), username: username.trim(), password, rpcPath: rpcPath.trim() });
@@ -135,7 +137,7 @@ export const ConnectionView = () => {
 
         {connection && <StatusRow connection={connection} health={health} />}
 
-        <div className="flex flex-col gap-4 rounded-xl border p-4">
+        <form onSubmit={submit} className="flex flex-col gap-4 rounded-xl border p-4">
           <Field
             label="Server URL"
             hint={URL_HINT}
@@ -181,18 +183,18 @@ export const ConnectionView = () => {
           )}
 
           <div className="flex items-center gap-2">
-            <Button size="sm" onClick={submit} disabled={!url.trim() || save.isPending}>
+            <Button type="submit" size="sm" disabled={!url.trim() || save.isPending}>
               {save.isPending && <Loader2 className="mr-2 h-3.5 w-3.5 animate-spin" />}
               {connection ? 'Save' : 'Connect'}
             </Button>
             {connection && (
-              <Button size="sm" variant="ghost" onClick={remove} disabled={forget.isPending}>
+              <Button type="button" size="sm" variant="ghost" onClick={remove} disabled={forget.isPending}>
                 <Trash2 className="mr-2 h-3.5 w-3.5" />
                 Disconnect
               </Button>
             )}
           </div>
-        </div>
+        </form>
       </div>
     </div>
   );