Added
- Persistent file logging. All tracing output now goes to both
stderr and a daily-rotating log file under the config directory
(~/.config/clipboardwire/clipboardwire.log.YYYY-MM-DDon Linux).
If the process disappears unexpectedly, the log file shows what
happened last. - Panic hook with crash file. Panics are caught by a custom hook
that writes the panic message plus a full backtrace to
~/.config/clipboardwire/crash.logbefore aborting. This survives
even if the tracing layer hasn't flushed yet.