Support Remote browser and media keys and connection history UI

Accept the eighteen browser, volume, media and launch identities in the input vocabulary and both SDKs. Exercise media-key capture on the private Xorg harness, and permit only the new remember-host checkbox in the connection form integration test.

Validated: affected-package race tests, Tentacles make check, private native_remote_input.py and native_remote_keys.py. Physical input, live peer interoperability, speech and Braille acceptance remain pending.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/app/tentacle_remote_connection_test.go

@@ -116,7 +116,9 @@ func select_remote_relay(t *testing.T, forms *consentTestForms, address, role st
 		if element.ID == "channel-key" && (!element.Secret || element.Text != "") {
 			t.Fatal("key unmasked or prefilled")
 		}
-		if element.Kind == interaction.CheckBox {
+		// The only Tentacle checkbox is remembering the host and key;
+		// access is chosen solely in the reader-owned approval form.
+		if element.Kind == interaction.CheckBox && element.ID != "remember" {
 			t.Fatal("permissions duplicated")
 		}
 	}