Graceful clipboard handling and timezone-correct dates - Fix: invalid YAML header in clipboard/stdin treated as body — when the clipboard or stdin stream contains syntactically invalid YAML between --- delimiters, Tp-Note no longer aborts with an error. Instead a warning is logged and the entire input is treated as plain body text, so note creation continues normally. - Fix: note filenames use local date instead of UTC — the date filter previously computed dates from the Unix epoch in UTC, causing wrong dates in filenames for users in timezones east of UTC (e.g. a note created at 02:00 EEST was dated the previous day). Dates now reflect the local timezone. This regression was introduced with v1.26.2.