Release v0.6.58: preserve LAN connections across missed discovery

LAN-PREVIEW.md

@@ -1,4 +1,4 @@
-# LAN mouse, keyboard and clipboard — v0.6.57 (experimental)
+# LAN mouse, keyboard and clipboard — v0.6.58 (experimental)
 
 KSwitcher discovers other enabled KSwitcher instances, pairs them with the same
 code on both computers, and shares mouse and keyboard through a screen edge.
@@ -10,7 +10,7 @@ is not implemented by clipboard synchronization.
 
 ## Set up multiple computers
 
-1. Install the v0.6.57 or newer on every participating PC. Input protocol v2 requires all participants to update; earlier one-pair builds cannot connect. Preserve local data; do not copy pairing identities between PCs.
+1. Install the v0.6.58 or newer on every participating PC. Input protocol v2 requires all participants to update; earlier one-pair builds cannot connect. Preserve local data; do not copy pairing identities between PCs.
 2. Open Settings → Tools → KSwitcher computers and enable discovery on both PCs.
    Only running LAN-enabled KSwitcher instances appear, not generic network devices.
 3. Match the computer name and instance-ID prefix displayed on the other PC.
@@ -116,3 +116,7 @@ Three physical computers still need an end-to-end trial for their adapters,
 firewalls, displays and application privilege levels. The automated TCP tests
 use local sockets, and input-state tests use simulated desktop environments;
 they do not claim a completed three-machine hardware test.
+
+## v0.6.58 connection fixes
+
+Saved trust keeps TCP listeners available even when discovery announcements are missed. Working authenticated input sessions no longer depend on discovery presence. Pair saved is distinct from input connected; the list refreshes every second. A changed instance ID requires a new pairing. Keep each PC's own data folder during upgrades. Connection state changes and listener Windows errors are written to the diagnostic log.