copilot-swe-agent[bot] c5df6a49c6 Modernize null-check patterns: use 'is null' and 'is not null' ... Replace '== null' with 'is null' and '!= null' with 'is not null' across 19 core files following modern C# pattern matching conventions. Only literal null comparisons are changed. Assignments, value comparisons, and LINQ expressions are left untouched. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>		2026-03-24 00:28:02 +00:00
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ChatMessage.cs	Fix message marker mixed with actual message body	2023-03-25 16:42:28 +08:00
ChatParser.cs	Modernize null-check patterns: use 'is null' and 'is not null'	2026-03-24 00:28:02 +00:00
LastSeenMessageList.cs	Trim	2023-01-14 21:07:09 +08:00